Motor power supply regulating circuit and control method, and electronic equipment

Abstract

The present application discloses a motor power supply regulation circuit and control method, and an electronic device, wherein the motor power supply regulation circuit includes: a power factor correction circuit, an isolation circuit, a first power supply conversion circuit, a second power supply conversion circuit, and a control circuit, wherein the isolation circuit includes a first switch subcircuit and an isolation transformer; the power factor correction circuit adjusts an AC input signal to a first DC signal based on a first control signal, the first switch subcircuit converts the first DC signal to a first AC signal based on a first drive signal, the isolation transformer converts the first AC signal to at least two second AC signals respectively, the first power supply conversion circuit converts the second AC signal to a DC drive signal and outputs it to a DC motor; the second power supply conversion circuit converts the second AC signal to an AC drive signal and outputs it to an AC motor. In the above manner, the motor power supply regulation circuit in the present application effectively simplifies the system hardware circuit and improves the reliability and efficiency of the drive control.

Description

Technical Field

[0001] The present application relates to the field of power supply technology, and in particular to a motor power supply regulation circuit and control method, and electronic equipment. Background Art

[0002] Nowadays, in various existing motor drive power application devices, different requirements are put forward for input power according to different load power characteristics. The commonly used motor drive power supply is composed of two independent rectifier modules and drive modules to form the entire drive system of the motor.

[0003] Among them, each module has a relatively independent circuit, which needs to be controlled independently, so that the entire drive system is relatively complex, and the efficiency and reliability are also low, especially the power supply control involving multiple motor loads, which is more complicated. Summary of the invention

[0004] The main technical problem solved by the present application is to provide a motor power regulation circuit and control method, and electronic equipment, which can solve the problem that the motor power regulation circuit driving system in the prior art is relatively complex and has low efficiency and reliability.

[0005] In order to solve the above technical problems, a technical solution adopted in the present application is: to provide a motor power regulation circuit, wherein the motor power regulation circuit includes: a power factor correction circuit, which is used to couple with an AC power supply to receive an AC input signal provided by the AC power supply and convert the AC input signal into a first DC signal; an isolation circuit, including a first switch sub-circuit and an isolation transformer, the isolation transformer includes a primary winding and at least two secondary windings coupled to the primary winding, and the first switch sub-circuit couples the power factor correction circuit and the primary winding; a first power conversion circuit, each first power conversion circuit is coupled to a secondary winding and is used to couple with a DC motor; a second power conversion circuit, each second power conversion circuit is coupled to a secondary winding and is used to couple with an AC motor; a control circuit, which couples the power factor correction circuit, the first switch sub-circuit, each first power conversion circuit and each second power conversion circuit, and the control circuit samples and obtains the AC input signal, so as to adjust the first characteristic parameter of the first control signal based on the AC input signal; wherein, the power factor correction circuit receives the first control signal sent by the control circuit, and adjusts the AC input signal to the first DC signal based on the first control signal; each first switch sub-circuit receives the first DC signal sent by the power factor correction circuit and the first drive signal sent by the control circuit, and converts the first DC signal into a first AC signal based on the first drive signal; the primary winding receives the first AC signal sent by the first switch sub-circuit, and uses at least two secondary windings to convert the first AC signal into at least two second AC signals respectively; each first power conversion circuit receives the second AC signal sent by each secondary winding, and converts the second AC signal into a DC drive signal to output to the DC motor; each second power conversion circuit receives the second AC signal sent by each secondary winding, and converts the second AC signal into an AC drive signal to output to the AC motor.

[0006] Among them, the control circuit samples and obtains the first DC signal to adjust the second characteristic parameter of the second control signal based on the first DC signal, and sends the second control signal to the power factor correction circuit, so that the power factor correction circuit limits the first DC signal to a first threshold range under the action of the second control signal; wherein the first characteristic parameter is positively correlated with the AC input signal, and the power factor correction circuit responds to the first control signal with a higher priority than responding to the second control signal; the control circuit samples and obtains the DC drive signal to adjust the third characteristic parameter of the third control signal based on the DC drive signal, and sends the third control signal to the first power conversion circuit, so that the first power conversion circuit limits the DC drive signal to a second threshold range under the action of the third control signal; the control circuit samples and obtains the AC drive signal to adjust the fourth characteristic parameter of the fourth control signal based on the AC drive signal, and sends the fourth control signal to the second power conversion circuit, so that the second power conversion circuit limits the AC drive signal to a third threshold range under the action of the fourth control signal.

[0007] Among them, the motor power regulation circuit also includes a backup power supply, a power input conversion circuit and a power supply bus. The power input conversion circuit is coupled to the backup power supply, the power supply bus and the control circuit. The power supply bus is coupled to the power factor correction circuit and the first switch sub-circuit. The power input conversion circuit receives the power input signal provided by the backup power supply, and converts and superimposes the power input signal to the first DC signal to output it to the power supply bus, and sends the first DC signal to the first switch sub-circuit through the power supply bus; the control circuit samples and obtains the power input signal to adjust the fifth characteristic parameter of the fifth control signal based on the power input signal, and sends the fifth control signal to the power input conversion circuit so that the power input conversion circuit adjusts the first DC signal based on the fifth control signal; wherein the fifth characteristic parameter is positively correlated with the power input signal.

[0008] Among them, the second power conversion circuit also includes a second switching sub-circuit and an inverter circuit, the second switching sub-circuit is coupled to the secondary winding and the inverter circuit, and the inverter circuit is used to couple with the AC motor; wherein the second switching sub-circuit receives the second AC signal sent by the secondary winding and the second drive signal sent by the control circuit, and converts the second AC signal into a second DC signal based on the second drive signal; the inverter circuit receives the second DC signal sent by the second switching sub-circuit and the fourth control signal sent by the control circuit, so as to convert the second DC signal into an AC drive signal based on the fourth control signal.

[0009] Among them, the first switch subcircuit includes a first capacitor, a first switch tube, a second switch tube, a third switch tube, a fourth switch tube, a second capacitor and a first inductor; wherein, the first end of the first capacitor is coupled to the first end of the power factor correction circuit, the first end of the first switch tube and the first end of the second switch tube, the second end of the first capacitor is coupled to the second end of the power factor correction circuit, the second end of the third switch tube and the second end of the fourth switch tube, the second end of the first switch tube is coupled to the first end of the third switch tube and the first end of the second capacitor, the second end of the second switch tube is coupled to the first end of the fourth switch tube and the second end of the primary winding, the second end of the second capacitor is coupled to the first end of the first inductor, and the second end of the first inductor is coupled to the first end of the primary winding; the third end of each of the first switch tubes, the second switch tube, the third switch tube and the fourth switch tube is connected to the control circuit.

[0010] Wherein, the power factor correction circuit includes a first diode, a second diode, a third diode, a fourth diode, a fifth inductor, a sixth inductor, a fifth diode, a sixth diode, a fifteenth switch tube, a sixteenth switch tube and a sixth capacitor; wherein, the first end of the first diode is coupled to the second end of the third diode and the first end of the AC power supply, the second end of the first diode is coupled to the second end of the second diode, the first end of the fifth inductor and the first end of the sixth inductor, the first end of the second diode is coupled to the second end of the fourth diode and the second end of the AC power supply, the first end of the third diode is coupled to the first end of the fourth diode, the second end of the fifteenth switch tube, the second end of the sixteenth switch tube and the second end of the sixth capacitor, the second end of the fifth inductor is coupled to the first end of the fifth diode and the first end of the fifteenth switch tube, the second end of the sixth inductor is coupled to the first end of the sixth diode and the first end of the sixteenth switch tube, the second end of the fifth diode is coupled to the second end of the sixth diode and the first end of the sixth capacitor, and the third end of the fifteenth switch tube and the third end of the sixteenth switch tube are both coupled to the control circuit.

[0011] To solve the above technical problems, another technical solution adopted in the present application is: to provide a motor power control method, wherein the motor power control method includes: receiving an AC input signal provided by an external AC power supply; adjusting a first characteristic parameter of a first control signal based on the AC input signal; converting the AC input signal into a first DC signal using the first control signal; converting the first DC signal into a first AC signal using a first drive signal; converting the first AC signal into at least two second AC signals respectively; converting the second AC signal into a DC drive signal to output to an external DC motor; converting the second AC signal into an AC drive signal to output to an external AC motor.

[0012] Among them, after the step of converting the AC input signal into a first DC signal using a first control signal and before the step of converting the first DC signal into a first AC signal using a first drive signal, it also includes: adjusting the fifth characteristic parameter of the fifth control signal based on the power input signal; wherein the fifth characteristic parameter is positively correlated with the power input signal; and converting and superimposing the power input signal onto the first DC signal using the fifth control signal.

[0013] The step of converting the second AC signal into an AC driving signal includes: converting the second AC signal into a second DC signal based on the second driving signal; and converting the second DC signal into an AC driving signal using a fourth control signal.

[0014] To solve the above technical problems, another technical solution adopted in the present application is: to provide an electronic device, wherein the electronic device includes a coupled housing and a motor power regulation circuit; wherein the motor power regulation circuit is the motor power regulation circuit as described in any one of the above items.

[0015] The beneficial effects of the present application are as follows: Different from the prior art, the power factor correction circuit in the motor power regulation circuit provided by the present application receives the first control signal sent by the control circuit, and adjusts the AC input signal to a first DC signal based on the first control signal; each first switch sub-circuit receives the first DC signal sent by the power factor correction circuit and the first drive signal sent by the control circuit, and converts the first DC signal into a first AC signal based on the first drive signal; the primary winding receives the first AC signal sent by the first switch sub-circuit, and uses at least two secondary windings to convert the first AC signal into at least two second AC signals respectively; each first power conversion circuit receives the second AC signal sent by each secondary winding, and converts the second AC signal into a DC drive signal to output to the DC motor; each second power conversion circuit receives the second AC signal sent by each secondary winding, and converts the second AC signal into an AC drive signal to output to the DC motor; The drive signal is output to the AC motor, so that each circuit can be integrated into the same module, and the power factor correction circuit, the first power conversion circuit and the second power conversion circuit are controlled by the same control circuit, which effectively simplifies the system hardware circuit and improves the reliability and efficiency of the drive control; and compared with the signal feedback adjustment in response to the output to the motor load, the drive control implemented in response to the AC input signal provided by the AC power supply effectively ensures the timeliness of the control, improves the control efficiency, and ensures the optimization of the entire motor drive conversion efficiency; in addition, compared with configuring an independent isolation transformer for each motor load, the use of a multi-winding transformer further improves the integration of the motor power regulation circuit, simplifies the drive control implemented by the control circuit, and can also achieve primary and secondary side safety electrical isolation and voltage matching through the isolation transformer, meeting the primary and secondary side electrical safety insulation requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0017] Figure 1 It is a structural schematic diagram of a first embodiment of the motor power supply regulating circuit of the present application;

[0018] Figure 2 It is a structural schematic diagram of a second embodiment of the motor power supply regulating circuit of the present application;

[0019] Figure 3 It is a structural schematic diagram of a third embodiment of the motor power supply regulating circuit of the present application;

[0020] Figure 4 yes Figure 3 A schematic diagram of the structure of an embodiment of a first switch subcircuit in a motor power supply regulation circuit;

[0021] Figure 5 yes Figure 3 A schematic diagram of the structure of a first embodiment of a power factor correction circuit in a motor power supply regulation circuit;

[0022] Figure 6 yes Figure 3 A schematic diagram of the structure of a second embodiment of a power factor correction circuit in a motor power supply regulation circuit;

[0023] Figure 7 yes Figure 3 A schematic structural diagram of a third embodiment of a power factor correction circuit in a motor power supply regulation circuit;

[0024] Figure 8 yes Figure 3 A schematic structural diagram of a fourth embodiment of a power factor correction circuit in a motor power supply regulation circuit;

[0025] Fig. 9 yes Figure 3 A schematic diagram of the structure of an embodiment of a second switch subcircuit in a motor power supply regulation circuit;

[0026] Fig.10 yes Figure 3 A schematic diagram of the structure of an embodiment of an inverter circuit in a motor power supply regulating circuit;

[0027] Fig.11 It is a flowchart of the first implementation method of the motor power supply control method of the present application;

[0028] Fig.12 yes Fig.11 S47 is a flow chart of an embodiment;

[0029] Fig.13 It is a flow chart of the second implementation method of the motor power supply control method of the present application;

[0030] Fig.14 It is a schematic diagram of the framework of an implementation scheme of the electronic device of the present application. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] The terms "first", "second" and "third" in this application are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second" and "third" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. All directional indications (such as up, down, left, right, front, back...) in the implementation mode of this application are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0033] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0034] The present application is described in detail below with reference to the accompanying drawings and implementation methods.

[0035] See also Figure 1 , Figure 1 The first embodiment of the motor power supply regulation circuit of the present application is shown in FIG. 1. In the present embodiment, the motor power supply regulation circuit 10 specifically includes: a power factor correction circuit 11, an isolation circuit 12, a first power conversion circuit 13, a second power conversion circuit 14 and a control circuit 15.

[0036] Among them, a motor power regulation circuit 10 provided in the present application is specifically used in the power supply of a DC motor 102 and an AC motor 103, such as a DC motor 102, a single-phase AC motor 103 and / or a three-phase AC motor 103, to obtain power from the power grid, and perform power conversion and regulation, and provide it to the DC motor 102 and the AC motor 103 to drive the DC motor 102 and the AC motor 103 to work.

[0037] Specifically, the motor power regulation circuit 10 can be understood as an electric energy conversion system, whose core components include a power factor correction circuit 11, a first power conversion circuit 13 and a control circuit 15, which work together to ensure efficient and stable operation of the DC motor 102.

[0038] Among them, the power factor correction circuit 11 is used to couple with the AC power supply 101 to receive the AC input signal from the power grid, and convert the input AC signal into a smooth, highly stable first DC signal through electronic control technology. This conversion process helps to improve the energy efficiency and stability of the entire system.

[0039] It is worth noting that the AC power supply 101 can be understood as a power supply from a power grid, or a power regulation circuit that performs power conversion and regulation on the power supply from the power grid to obtain an AC power output.

[0040] In addition, the term "coupled" herein refers to any direct and indirect connection means. Therefore, if the first circuit is described as being coupled to the second circuit, it means that the first circuit can be directly connected to the second circuit through electrical connection or signal connection methods such as wireless transmission, optical transmission, etc., or can be indirectly connected to the second circuit through other circuits or connection means.

[0041] Furthermore, the isolation circuit 12 includes a first switch subcircuit 121 and an isolation transformer 122, the isolation transformer 122 includes a primary winding 1221 and at least two secondary windings 1222, the first switch subcircuit 121 couples the power factor correction circuit 11 and the primary winding 1221, and at least two secondary windings 1222 are coupled to the primary winding 1221 and electrically isolated from each other to prevent direct electrical connection between the primary circuit and the secondary circuit, thereby enhancing the safety of the system, especially between high-voltage and low-voltage circuits, or between sensitive circuits susceptible to interference and noisy power supply circuits. At least two secondary windings 1222 may also have corresponding different turns ratios to convert the primary electrical energy into outputs of different voltage levels to meet the voltage requirements of different loads.

[0042] The number of the first power conversion circuit 13 can be one or more, and each of the first power conversion circuits 13 is coupled to one of the secondary windings 1222 and is used to couple to a DC motor 102 .

[0043] The number of the second power conversion circuit 14 can also be one or more, and each second power conversion circuit 14 is coupled to one of the coupled secondary windings 1222 and is used to couple to the AC motor 103 .

[0044] Optionally, when the number of the first power conversion circuits 13 is multiple, the DC motors 102 coupled thereto may be the same or different, so as to correspond to the secondary windings 1222 having the same or different turns ratios; when the number of the second power conversion circuits 14 is multiple, the AC motors 103 coupled thereto may also be the same or different, and may specifically be single-phase AC motors 103 and / or AC three-phase motors, which is not limited in the present application.

[0045] It is worth noting that the first power conversion circuit 13 actually corresponds to a DC chopper circuit, that is, a rectifier circuit, such as a full-bridge rectifier circuit, a half-bridge rectifier circuit or a full-wave rectifier circuit, and any reasonable circuit form for realizing DC to DC conversion to meet the driving requirements of the DC motor 102 under different working conditions. This application does not limit this.

[0046] In addition, the second power conversion circuit 14 corresponds to an inverter circuit, such as a full-bridge inverter circuit, a symmetrical half-bridge circuit or an asymmetrical half-bridge circuit, and any other reasonable circuit form for realizing DC to AC conversion, and is used to adopt any reasonable motor drive control strategy such as SVPWM (Space Vector Pulse Width Modulation), SPWM (Sinusoidal Pulse Width Modulation), DTC (Direct torque control) or FOC (Field-Oriented Control) to realize the current, voltage and frequency of DC to AC conversion for adjustment and control, so as to meet the driving requirements of the AC motor 103 under different working conditions and realize efficient speed regulation and control of the motor.

[0047] Among them, the control circuit 15 is coupled to the power factor correction circuit 11, the first switching sub-circuit 121, each first power conversion circuit 13 and each second power conversion circuit 14, so as to sample and analyze the AC input signal in the power factor correction circuit 11, and dynamically adjust the first characteristic parameter of the first control signal sent to the power factor correction circuit 11 based on the AC input signal.

[0048] Optionally, the first control signal may specifically be one or more of any reasonable control signals such as a PWM (Pulse Width Modulation) signal or a PFM (Pulse Frequency Modulation) signal, and the present application does not limit this.

[0049] Optionally, the first characteristic parameter can specifically be one or more of any reasonable parameters such as duty cycle and frequency, and the switching state of the above-mentioned switch tubes and / or switch contacts corresponds to the time ratio between on and off and / or the switching frequency, which is not limited in this application.

[0050] Among them, the power factor correction circuit 11 is also used to receive the first control signal sent by the control circuit 15, and adjust the switching state of each switch tube and / or each switch contact inside it in response to the first control signal, so as to dynamically adjust the current output of the power factor correction circuit 11, that is, the first DC signal, to meet the driving requirements of each motor load under different working conditions.

[0051] Each first switch subcircuit 121 receives a first DC signal from the power factor correction circuit 11 and a first drive signal sent by the control circuit 15, and converts the first DC signal into a first AC signal according to the timing control of the first drive signal, so as to generate the required AC waveform using precise switch control.

[0052] The primary winding 1221 of the isolation transformer 122 receives the first AC signal from the first switch subcircuit 121, and converts it into at least two second AC signals correspondingly by electromagnetic induction using at least two secondary windings 1222. This design allows efficient energy transfer while achieving electrical isolation, improving the safety and stability of the system.

[0053] The second AC signal output by each secondary winding 1222 is received by a corresponding first power conversion circuit 13, and the first power conversion circuit 13 converts the second AC signal into a DC drive signal, which is specifically supplied to the DC motor 102. This usually includes rectification and filtering processes to ensure the stability and applicability of the output DC signal.

[0054] At the same time, the second AC signals of other secondary windings 1222 are received by the corresponding second power conversion circuits 14, which convert the second AC signals into AC drive signals for use by the AC motor 103. This conversion may involve an inversion process to generate AC power that meets the requirements of the AC motor 103.

[0055] In summary, through sophisticated control and conversion mechanisms, efficient power conversion and distribution from AC input to DC motor 102 and AC motor 103 are achieved, which is suitable for complex application scenarios that need to drive DC and AC loads at the same time, such as hybrid vehicles, industrial automation equipment, etc.

[0056] The above scheme integrates various circuits into the same module and uses the same control circuit 15 to control the power factor correction circuit 11 and the first power conversion circuit 13, thereby effectively simplifying the system hardware circuit and improving the reliability and efficiency of the drive control; and compared with the signal feedback adjustment in response to the output to the motor load, the drive control implemented in response to the AC input signal provided by the AC power supply 101 effectively ensures the timeliness of the control, improves the control efficiency, and ensures the optimization of the entire motor drive conversion efficiency; in addition, compared with configuring an independent isolation transformer 122 for each motor load, the use of a multi-winding transformer further improves the integration of the motor power regulation circuit 10, simplifies the drive control implemented by the control circuit 15, and can also achieve primary and secondary side safety electrical isolation and voltage matching through the isolation transformer 122, meeting the primary and secondary side electrical safety insulation requirements.

[0057] In one embodiment, the control circuit 15 is further configured to sample and acquire the first DC signal from the power factor correction circuit 11 , so as to calculate and adjust the second characteristic parameter of the second control signal based on the real-time data of the first DC signal.

[0058] Among them, the power factor correction circuit 11 is also used to receive the first control signal and / or the second control signal sent by the control circuit 15, and adjust the switching state of each switch tube and / or each switch contact inside it in response to the first control signal and / or the second control signal, so as to dynamically adjust the current output of the power factor correction circuit 11, that is, the first DC signal, thereby ensuring that the voltage and / or current and / or frequency of the first DC signal are limited to a preset first threshold range to meet the driving requirements of each motor load under different working conditions.

[0059] It is understandable that the first threshold range is intended to protect subsequent circuits from damage due to overvoltage or overcurrent, and also to maintain system energy efficiency and stability, and a reasonable voltage and / or current and / or frequency range is given so that when the control circuit 15 detects that the first DC signal exceeds the first threshold range, the first control signal and / or the second control signal are used to adjust the switching state of the power factor correction circuit 11 to adjust the current first DC signal to within the first threshold range.

[0060] It can be seen that the control circuit 15 forms a closed-loop control system through real-time monitoring, analysis, command sending and receiving feedback, ensuring the stable output of the first DC signal in the power factor correction circuit 11, optimizing the overall power factor correction effect and voltage conversion efficiency, and enhancing adaptability and reliability.

[0061] Optionally, the first threshold range corresponds to a voltage threshold range, the difference between the upper limit value and the lower limit value of the voltage threshold range is 6-12V, and preferably 10V, and is limited to + / -5V of the preset target voltage output value of the first DC signal, which is not limited in this application.

[0062] Among them, the power factor correction circuit 11 responds to the first control signal with a higher priority than responding to the second control signal. That is, when the power factor correction circuit 11 simultaneously receives the first control signal and the second control signal sent by the control circuit 15, the power factor correction circuit 11 will preferentially respond to the first control signal to adjust the first DC signal, thereby being able to preferentially respond to changes in the AC input signal and promptly adjust the first DC signal to within the first threshold range.

[0063] In other embodiments, when the control circuit 15 simultaneously samples and acquires the AC input signal and the first DC signal, it specifically adjusts the first characteristic parameter of the first control signal based on the AC input signal, and sends the first control signal to the power factor correction circuit 11, but does not send the second control signal to the power factor correction circuit 11.

[0064] In another embodiment, when the control circuit 15 detects that the AC input signal is within a preset power supply input threshold, the control circuit 15 does not send a first control signal to the power factor correction circuit 11 to avoid unnecessary frequent adjustments to the switching state of the power factor correction circuit 11 caused by normal fluctuations in the power supply input of the AC power supply 101, and sends a second control signal to the power factor correction circuit 11 in response to the first DC signal to adjust the first DC signal to within the first threshold range using the second control signal; and when the control circuit 15 detects that the first DC signal is within a preset power supply output threshold, that is, within the first threshold range, the second characteristic parameter of the second control signal is not adjusted, and the second control signal is not sent to the power factor correction circuit 11; and when the control circuit 15 detects that the AC input signal is not within the preset power supply input threshold and the first DC signal is not within the preset power supply output threshold, the first characteristic parameter of the first control signal is adjusted based on the currently acquired AC input signal, and the first control signal is sent to the power factor correction circuit 11, but the second control signal is not sent to the power factor correction circuit 11.

[0065] In one embodiment, the first characteristic parameter of the first control signal adjusted by the control circuit 15 based on the AC input signal is positively correlated with the AC input signal, that is, when the AC input signal increases, the first characteristic parameter increases accordingly; and when the AC input signal decreases, the first characteristic parameter decreases accordingly.

[0066] It can be seen from this that when the AC input signal provided by the AC power supply 101 gradually increases at the initial stage of power supply, the first characteristic parameter, such as the duty cycle of the PWM signal, can increase in response to the increase of the AC input signal, so as to more quickly adjust the power supply output of the power factor correction circuit 11, that is, the first DC signal to within the preset power supply output threshold, and correspond to the increase amplitude of the AC input signal, and more smoothly and gradually adjust the increase amplitude of the power supply output of the power factor correction circuit 11, so as to effectively avoid the occurrence of peak current; and when a surge peak current appears in the AC input signal, the duty cycle of the PWM signal can also increase accordingly in response to the surge peak current, so as to more quickly reduce the surge peak current, thereby realizing surge protection in time and avoiding damage to the back-end circuit.

[0067] In one embodiment, the control circuit 15 is also used to sample and obtain the DC drive signal output by the first power conversion circuit 13 to the DC motor 102 in real time, so as to calculate and adjust the third characteristic parameter of the third control signal based on the real-time data of the DC drive signal, and send the third control signal to the first power conversion circuit 13, so as to dynamically adjust the switching state of the first power conversion circuit 13 using the third control signal, so as to ensure that the voltage and / or current and / or frequency of the DC drive signal are limited to a preset second threshold range.

[0068] Furthermore, the control circuit 15 is also used to sample and obtain the AC drive signal output by the second power conversion circuit 14 to the AC motor 103 in real time, so as to calculate and adjust the fourth characteristic parameter of the fourth control signal based on the real-time data of the AC drive signal, and send the fourth control signal to the second power conversion circuit 14, so as to dynamically adjust the switching state of the second power conversion circuit 14 using the fourth control signal to ensure that the voltage and / or current and / or frequency of the AC drive signal are limited to a preset third threshold range.

[0069] It is understandable that the second threshold range is to meet the driving characteristic requirements of the DC motor 102 and to maintain the system energy efficiency and stability, and a reasonable voltage and / or current and / or frequency range is given so that when the control circuit 15 detects that the DC drive signal exceeds the second threshold range, the third control signal is used to adjust the switching state of the first power conversion circuit 13 to adjust the current DC drive signal to within the second threshold range.

[0070] Similarly, the third threshold range is intended to meet the driving characteristic requirements of the AC motor 103 and to maintain system energy efficiency and stability, and a reasonable voltage and / or current and / or frequency range is given so that when the control circuit 15 detects that the AC drive signal exceeds the third threshold range, the fourth control signal is used to adjust the switching state of the second power conversion circuit 14 to adjust the current AC drive signal to within the third threshold range.

[0071] The control circuit 15 can regulate the AC drive signal by any reasonable closed-loop feedback regulation method such as a speed loop and a current loop to ensure the stable output of the second power conversion circuit 14 and enhance the adaptability and reliability of the motor load drive control.

[0072] Optionally, the second threshold range and the third threshold range correspond to a voltage threshold range, and the difference between the upper limit value and the lower limit value of the voltage threshold range is 6-12V, and preferably 10V, and is limited to + / -5V of the pre-set target voltage output value of the DC drive signal and the AC drive signal. This application does not impose any limitations on this.

[0073] Optionally, the control circuit 15 may specifically include a DSP (Digital Signal Process), an MCU (Micro Controller Unit) circuit, a CPU (Central Processing Unit), a single-chip microcomputer, a field programmable gate array, a programmable logic device, a discrete gate or transistor logic device, a discrete hardware, or any other reasonable circuit unit with a signal processing function, and the present application does not limit this.

[0074] See also Figure 2 , Figure 2 1 is a schematic diagram of the structure of the second embodiment of the motor power regulation circuit of the present application. The difference between the motor power regulation circuit in this embodiment and the first embodiment of the motor power regulation circuit provided in the present application is that the motor power regulation circuit 20 specifically further includes a backup power supply 26, a power input conversion circuit 27 and a power supply bus 28.

[0075] Optionally, the backup power supply 26 serves as a backup energy source and is typically designed to provide uninterrupted power during main power failure or maintenance to maintain the continued operation of the system and ensure service continuity. Specifically, it can be any reasonable independent power source such as a UPS (Uninterruptible Power Supply), a battery, a diesel generator, a photovoltaic power generation device, a wind power generation device, etc., and the present application does not limit this.

[0076] Specifically, the power input conversion circuit 27 is coupled to the backup power supply 26, the power supply bus 28 and the control circuit 25. The power input conversion circuit 27 is used to receive the power input signal provided by the backup power supply 26. The power supply bus 28 is further coupled to the power factor correction circuit 11 and the first switch sub-circuit 121.

[0077] The power input conversion circuit 27 is used to receive the power input signal provided by the backup power supply 26, convert the power input signal, and superimpose it with the first DC signal output by the power factor correction circuit 21 to ensure the stability and redundancy of the power supply, and output it to the power supply bus 28, and send the first DC signal to the first switching sub-circuit 121 through the power supply bus 28.

[0078] The control circuit 25 is also specifically used to sample and obtain the power input signal from the power input conversion circuit 27, and calculate and adjust the fifth characteristic parameter of the fifth control signal sent to the power input conversion circuit 27 based on the power input signal, so that the power input conversion circuit 27 can adjust the switching state of each switch tube and / or each switch contact inside it under the action of the fifth control signal, so as to adjust the power supply output of the power input conversion circuit 27, and then adjust the first DC signal.

[0079] Among them, the fifth characteristic parameter of the fifth control signal adjusted by the control circuit 25 based on the power input signal is specifically positively correlated with the power input signal, that is, when the power input signal increases, the fifth characteristic parameter increases accordingly; and when the power input signal decreases, the fifth characteristic parameter decreases accordingly, so that in the initial stage of power supply of the backup power supply 26, the first DC signal can be adjusted to the preset first threshold range in a timely and rapid manner, and the increase in the power supply output of the power input conversion circuit 27 can be gradually adjusted corresponding to the increase in the power input signal, so as to effectively avoid the occurrence of peak current; and when a surge peak current appears in the power input signal, the surge peak current can also be quickly reduced, thereby realizing surge protection in time and avoiding damage to the back-end circuit.

[0080] In one embodiment, the control circuit 25 is also used to sample and obtain the first DC signal adjusted by the power factor correction circuit 21, and calculate and adjust the sixth characteristic parameter of the sixth control signal sent to the power input conversion circuit 27 based on the real-time data of the adjusted first DC signal, so that the power input conversion circuit 27 can adjust the switching state of each switch tube and / or each switch contact inside it under the action of the sixth control signal, so as to adjust the current output of the power input conversion circuit 27, and then adjust the first DC signal again.

[0081] Among them, the control circuit 25 specifically alternately and cyclically utilizes the second control signal and the sixth control signal to dynamically adjust the first DC signal, thereby ensuring that the voltage and / or current and / or frequency of the first DC signal are limited to a preset first threshold range to meet the driving requirements of each motor load under different working conditions.

[0082] The priority of the control circuit 25 in sending the second control signal is higher than the priority of sending the sixth control signal, so that when it is determined that the current first DC signal exceeds the first threshold range, the second control signal is first sent to the power factor correction circuit 21, so that after the power factor correction circuit 21 adjusts the second DC signal, it is determined whether the adjusted first DC signal is within the first threshold range. If so, the sixth control signal is not sent; if not, the sixth control signal is sent to the power input conversion circuit 27, so that the power input conversion circuit 27 adjusts the first DC signal again, and determines again whether the current first DC signal is within the first threshold range. If so, the adjustment of the first DC signal is completed; if not, the second control signal is sent to the power factor correction circuit 21 again, so that the power factor correction circuit 21 adjusts the first DC signal, and so on, and the second control signal and the sixth control signal are alternately and cyclically used to dynamically adjust the first DC signal until the first DC signal is within the first threshold range.

[0083] It should be pointed out that before the control circuit 25 sends the second control signal to the power factor correction circuit 21, it also specifically includes calculating and adjusting the first characteristic parameter of the second control signal based on the currently acquired first DC signal; similarly, before the control circuit 25 sends the sixth control signal to the power input conversion circuit 27, it also specifically includes calculating and adjusting the sixth characteristic parameter of the sixth control signal based on the currently acquired first DC signal.

[0084] It can be seen that the control circuit 25 forms a closed-loop control system through real-time monitoring, analysis, command sending and receiving feedback, which ensures the stable output of the first DC signal on the first DC signal, optimizes the overall voltage conversion efficiency and power supply stability, and enhances adaptability and reliability.

[0085] In one embodiment, the control circuit 25 has a higher priority in sending the first control signal to the power factor correction circuit 21 than in sending the fifth control signal to the power input conversion circuit 27. That is, when the control circuit 25 obtains the AC input signal and the power input signal at the same time, it specifically adjusts the first characteristic parameter of the first control signal based on the AC input signal, and sends the first control signal to the power factor correction circuit 21, but does not send the fifth control signal to the power input conversion circuit 27.

[0086] Moreover, the control circuit 25 has a higher priority in sending the fifth control signal to the power input conversion circuit 27 than in sending the sixth control signal. That is, when the control circuit 25 obtains the power input signal and the first DC signal at the same time, it specifically adjusts the fifth characteristic parameter of the fifth control signal based on the power input signal, and sends the fifth control signal to the power input conversion circuit 27, but does not send the sixth control signal to the power input conversion circuit 27, thereby being able to respond to changes in the power input signal in priority and promptly adjust the first DC signal to within the first threshold range.

[0087] It can be seen that when the control circuit 25 simultaneously obtains the AC input signal, the power input signal and the first DC signal, the priority of the control signal sent to the power factor correction circuit 21 or the power input conversion circuit 27 is arranged in the order of high to low: the first control signal, the fifth control signal, the second control signal, and the sixth control signal. Compared with the signal feedback adjustment that only responds to the circuit output, that is, the first DC signal, the circuit input, that is, the AC input signal and the power input signal are also used to control the power output, that is, the first DC signal, and the control priority that responds to the circuit input is higher, which effectively ensures the timeliness of power conversion and the stability of power supply, improves the control efficiency, and ensures the optimization of the entire power conversion efficiency.

[0088] In addition, since the AC power supply 101 and the backup power supply 26 usually gradually increase to the normal power supply output in the initial stage of power supply, the drive control based on the AC input signal and the power input signal can also adjust the power supply output more quickly and smoothly, and effectively realize soft start; and when the AC power supply 101 and / or the backup power supply 26 have power supply fluctuations, especially when surge peak current occurs, the drive control based on the circuit input is combined with the signal feedback based on the circuit output to realize surge protection in time to avoid damage to the back-end circuit.

[0089] It is worth noting that, since the multi-motor power supply regulation circuit 20 involves two power supplies, namely, the AC power supply 101 and the backup power supply 26, when regulating and controlling the voltage of the first DC signal, in order to balance the output power of the AC power supply 101 and the backup power supply 26, it is also necessary to perform current regulation on the first DC signal on the first DC signal. It should be pointed out that the regulation of the first DC signal implemented by the first control signal, the fifth control signal, the second control signal, and the sixth control signal is specifically voltage regulation.

[0090] In one embodiment, the control circuit 25 is also used to sample and obtain the current of the first DC signal, that is, the average current and the current of the AC input signal, so as to subtract the current of the AC input signal from the current of the first DC signal to obtain a first difference, and calculate and adjust the seventh characteristic parameter of the seventh control signal sent to the power factor correction circuit 21 based on the first difference, so that the power factor correction circuit 21 can adjust the switching state of each switch tube and / or each switch contact inside it under the action of the seventh control signal to adjust the current of the first DC signal.

[0091] Furthermore, the control circuit 25 is also used to sample and obtain the current of the power input signal, so as to subtract the current of the power input signal from the current of the first DC signal to obtain a second difference, and calculate and adjust the eighth characteristic parameter of the eighth control signal sent to the power input conversion circuit 27 based on the second difference, so that the power input conversion circuit 27 can adjust the switching state of each switch tube and / or each switch contact inside it under the action of the eighth control signal to adjust the current of the first DC signal, so as to dynamically adjust the difference between the currents of the balanced AC input signal and the power input signal relative to the first DC signal through difference feedback, so as to avoid one of the AC input signal and the power input signal being too large and the other being too small, so as to balance the output power of the AC power supply 101 and the backup power supply 26.

[0092] It is worth noting that the seventh control signal and the eighth control signal can also be one or more of any reasonable control signals such as PWM signal or PFM signal, and the seventh control signal and the eighth control signal correspond to one or more of any reasonable parameters such as duty cycle and frequency, and compared with the voltage regulation of the first DC signal using the first control signal, the fifth control signal, the second control signal, and the sixth control signal, in the current regulation of the first DC signal using the seventh control signal and the eighth control signal, the adjustment amplitude of the seventh characteristic parameter and the eighth characteristic parameter is small and can be ignored, that is, the current regulation of the first DC signal has a small effect on its voltage fluctuation and can be ignored.

[0093] It can be understood that the control circuit 25 achieves dual optimization of the bus current through precise current difference analysis and flexible control signal adjustment: on the one hand, the power quality of the overall system is improved through the power factor correction circuit 21, and on the other hand, the stability and efficiency of the current supply are ensured through the fine control of the power input conversion circuit 27.

[0094] It can be understood that, in this embodiment, the isolation circuit 22, the first switch sub-circuit 221, the isolation transformer 222, the primary winding 2221, the secondary winding 2222, the first power conversion circuit 23, the second power conversion circuit 24 and the control circuit 25 are respectively the same as the isolation circuit 12, the first switch sub-circuit 121, the isolation transformer 122, the primary winding 1221, the secondary winding 1222, the first power conversion circuit 13, the second power conversion circuit 14 and the control circuit 15. For details, please refer to Figure 1 And the related text content will not be repeated here.

[0095] See also Figure 3 , Figure 3 1 is a schematic diagram of the structure of the third embodiment of the motor power regulation circuit of the present application. The difference between the motor power regulation circuit in this embodiment and the first embodiment of the motor power regulation circuit provided in the present application is that the second power conversion circuit 34 in the motor power regulation circuit 30 specifically further includes a second switch sub-circuit 341 and an inverter circuit 342.

[0096] The second switch sub-circuit 341 is coupled to a secondary winding 3222 and an inverter circuit 342 , and the inverter circuit 342 is used to couple to the AC motor 103 .

[0097] The second switch sub-circuit 341 is used to receive the second AC signal sent by the secondary winding 3222 and the second drive signal sent by the control circuit 35, and adjust the switching state of each switch tube and / or each switch contact inside it based on the second drive signal to convert the second AC signal into a second DC signal.

[0098] The inverter circuit 342 is used to receive the second DC signal sent by the second switch sub-circuit 341 and the fourth control signal sent by the control circuit 35, so as to adjust the switching state of each switch tube and / or each switch contact inside it under the action of the fourth control signal, and then convert the second DC signal into an AC drive signal to provide it to the AC motor 103.

[0099] It can be seen from this that the DC output of the power factor correction circuit 31 is specifically used as the input bus voltage of the isolation transformer 322 in the subsequent isolation circuit 32. The subsequent stage realizes controllable conversion of the output voltage and frequency by controlling the first power conversion circuit 33, thereby achieving the purpose of driving the DC motor 102. The isolation transformer 322 is used to achieve electrical isolation and voltage matching functions, and an adjustable output DC drive signal is realized through the subsequent first power conversion circuit 33, thereby achieving the purpose of variable frequency driving of the subsequent motor load.

[0100] Similarly, the DC output of the power factor correction circuit 31 is also used as the input bus voltage of the subsequent isolation transformer 322. The subsequent stage realizes controllable conversion of the output voltage and frequency by controlling the second power conversion circuit 34, thereby achieving the purpose of driving the AC motor 103. The isolation transformer 322 is used to realize electrical isolation and voltage matching functions, and an adjustable output AC drive signal is realized through the subsequent second power conversion circuit 34, thereby achieving the purpose of variable frequency driving of the subsequent motor load.

[0101] In terms of control strategy, the control circuit 35 dynamically adjusts the first DC signal output by the power factor correction circuit 31 and the DC drive signal output by the first power conversion circuit 33, and / or the AC drive signal output by the second power conversion circuit 34 according to the real-time output power requirements and load voltage, frequency requirements and output characteristic curves of the DC motor 102 and / or the AC motor 103, to ensure that the entire conversion efficiency of the first power conversion circuit 33 and / or the second power conversion circuit 34 is the highest and the system control strategy is optimized, while achieving high-efficiency conversion drive and high dynamic adjustment functions.

[0102] In some specific embodiments, for application scenarios where AC input and electrical safety insulation are required to be high under a wide AC voltage input range, such as medical motor drive applications, the isolation transformer 322 in the isolation circuit 32 is used to achieve primary and secondary safety electrical isolation and voltage matching, meeting the medical requirements for primary and secondary electrical safety insulation. The first power conversion circuit 33 and / or the second power conversion circuit 34 of the rear stage realize output motor drive by controlling the power supply output, that is, the voltage, current, and frequency of the DC drive signal. The commonly used drive control strategies for general motor drives include SVPWM, SPWM, DTC, and FOC, etc. The control circuit 35 can use any one of the control strategies to adjust and control the current, voltage, and frequency of the DC drive signal and / or the AC drive signal to meet the drive requirements of the DC motor 102 and / or the AC motor 103 under different working conditions, and realize efficient speed regulation and control of the motor.

[0103] For example, when the AC input signal provided by the AC power supply 101 is 90Vac (volts / AC), in order to ensure that the motor power regulation circuit 30 operates efficiently, the power factor correction circuit 31 sets the target voltage output value to 370Vdc (volts / DC), and the subsequent first power conversion circuit 33 and / or the second power conversion circuit 34 adopt closed-loop stability control to ensure that the motor operates stably under different load conditions, and to ensure that the subsequent first power conversion circuit 33 and / or the second power conversion circuit 34 can output voltage, current and frequency waveforms that meet the requirements.

[0104] In the process of the AC input signal increasing from 90Vac to 220Vac, the control circuit 35 can gradually increase the duty cycle of the first control signal sent to the power factor correction circuit 31 in response to the change of the AC input signal, so as to slowly increase the power supply output of the power factor correction circuit 31, that is, the first DC signal to 390Vdc. The first power conversion circuit 33 and / or the second power conversion circuit 34 of the subsequent stage ensure the stable operation of the motor under different load conditions through closed-loop feedback control, and ensure that the first power conversion circuit 33 and / or the second power conversion circuit 34 of the subsequent stage can output voltage, current and frequency waveforms that meet the requirements.

[0105] In other embodiments, the AC power supply 101 can specifically increase the AC input signal from 220Vac to 264Vac step by step, and in the process gradually increase the duty cycle of the first control signal to slowly increase the first DC signal from 390Vdc to 410Vdc, and set a voltage hysteresis control of 5Vdc to ensure the stability and reliability of the drive control and meet the robustness requirements.

[0106] It can be seen that in order to ensure that the motor power regulation circuit 30 operates stably and reliably, according to the different voltage ranges of the AC input signal, when the input AC voltage is 90Vac, the target voltage output value is set to 370Vdc, and the subsequent first power conversion circuit 33 and / or the second power conversion circuit 34 are set to closed-loop output to ensure stable output of voltage, current and frequency waveforms that meet the requirements under all load conditions, thereby ensuring that the DC motor 102 and / or the AC motor 103 operate stably and reliably.

[0107] In another embodiment, the target voltage input value of the AC input signal can specifically be any reasonable voltage between 90-264Vac, and the target voltage output value of the power factor correction circuit 31 can specifically correspond to any reasonable voltage between 370-410Vdc, which is determined by the actual application scenario, different national power supply standards, etc., and the present application does not limit this.

[0108] In another embodiment, since the drive control of the DC motor 102 and / or the AC motor 103 has regularity and predictability, the control circuit 35 may also specifically have an AI (Artificial Intelligence) artificial intelligence control mechanism to optimize the control strategy of the control circuit 35 through the cloud or client AI artificial intelligence control, thereby further optimizing the real-time needs of the adaptive load. For example, the control circuit 35 may also specifically integrate an artificial intelligence chip, and / or a deep network learning model, and / or an AI algorithm network learning model to sample and obtain one or more of the AC input signal, the first DC signal, the DC drive signal, the first AC signal, the second AC signal, the second DC signal, the AC drive signal, the second AC signal, the third AC signal, and the third DC signal in real time, and / or the current ambient temperature, the running time of the motor power supply regulating circuit 30, and the running time of the DC motor 102 and / or the AC motor 103, so as to optimize the regulation, control and sending of one or more of the first control signal, the second control signal, the first drive signal, and the second drive signal by using AI artificial intelligence control.

[0109] The above scheme integrates various circuits into the same module and uses the same control circuit 35 to control the power factor correction circuit 31, the first power conversion circuit 33 and the second power conversion circuit 34, thereby effectively simplifying the system hardware circuit redundancy, reducing implementation costs, and improving the reliability and efficiency of drive control, and can also achieve more accurate output timing logic control through timing control.

[0110] The control circuit 35 can also dynamically adjust the first DC signal according to the voltage, current and frequency requirements of the DC motor 102 and the AC motor 103, so as to meet the output power requirements and obtain the optimal working point between working stability and efficiency optimization, thereby ensuring higher power supply efficiency of the entire system.

[0111] For application scenarios with higher safety requirements, in terms of control strategy, according to the real-time output power demand and load voltage and frequency demand of the DC motor 102, the second DC signal output by the isolation transformer 322 is dynamically adjusted according to the output characteristic curve, so as to ensure that the isolation transformer 322 and the subsequent first power conversion circuit 33 have the highest overall efficiency and the most optimized control strategy, while realizing high-efficiency conversion drive and high dynamic adjustment functions; similarly, according to the real-time output power demand and load voltage and frequency demand of the AC motor 103, the third DC signal output by the isolation transformer 322 is dynamically adjusted according to the output characteristic curve, so as to ensure that the isolation transformer 322 and the subsequent second power conversion circuit 34 have the highest overall efficiency and the most optimized control strategy, while realizing high-efficiency conversion drive and high dynamic adjustment functions.

[0112] As for application scenarios with lower safety requirements, in terms of control strategy, the first DC signal output by the power factor correction circuit 31 can be dynamically adjusted according to the real-time output power requirements and load voltage and frequency requirements of the DC motor 102 and / or the AC motor 103, according to the output characteristic curve, to ensure that the overall efficiency of the subsequent first power conversion circuit 33 and / or the second power conversion circuit 34 is the highest and the control strategy is optimized, while achieving high-efficiency conversion drive and high dynamic adjustment functions.

[0113] The control circuit 35 can also use one MCU to implement all control strategies, thereby effectively reducing the signal delay in realizing linkage control through communication between modules, resulting in reduced reliability and low synchronization, and improving the reliability of system control.

[0114] Please continue reading Figure 4 , Figure 4 yes Figure 3 A schematic structural diagram of an embodiment of a first switch subcircuit in a motor power supply regulation circuit.

[0115] In one embodiment, the first switch sub-circuit 321 may specifically include a first capacitor C1, a first switch tube Q1, a second switch tube Q2, a third switch tube Q3, a fourth switch tube Q4, a second capacitor C2 and a first inductor L1.

[0116] Among them, the first end of the first capacitor C1 is coupled to the first end of the power factor correction circuit 31, the first end of the first switch tube Q1 and the first end of the second switch tube Q2, the second end of the first capacitor C1 is coupled to the second end of the power factor correction circuit 31, the second end of the third switch tube Q3 and the second end of the fourth switch tube Q4, the second end of the first switch tube Q1 is coupled to the first end of the third switch tube Q3 and the first end of the second capacitor C2, the second end of the second switch tube Q2 is coupled to the first end of the fourth switch tube Q4 and the second end of the primary winding 3221, the second end of the second capacitor C2 is coupled to the first end of the first inductor L1, and the second end of the first inductor L1 is coupled to the first end of the primary winding 3221.

[0117] In other embodiments, the second capacitor C2 may be replaced by an electrical connection line, that is, the second capacitor C2 is removed from the first switch sub-circuit 321. The specific configuration may be determined by the actual application scenario, and the present application does not limit this.

[0118] It can be understood that the third end of each of the first switch tube Q1, the second switch tube Q2, the third switch tube Q3, and the fourth switch tube Q4 is coupled to the control circuit 35 so as to receive the first drive signal sent by the control circuit 35 and trigger conduction or shutdown under the action of the first drive signal to achieve corresponding signal conversion.

[0119] Optionally, the first switch tube Q1, the second switch tube Q2, the third switch tube Q3, the fourth switch tube Q4 and each "switch tube" hereinafter can specifically be one or more combinations of any reasonable switching devices such as MOS (Metal Oxide Semiconductor Field Effect Transistor), triode, thyristor, IGBT (Insulate Gate Bipolar Transistor), and the third end of each switch tube corresponds to the control end, so that when the third end of each switch tube receives a corresponding drive signal, its first end and the second end can be turned on. This application does not limit this.

[0120] Please continue reading Figure 5 , Figure 5 yes Figure 3 A schematic structural diagram of the first embodiment of the power factor correction circuit in the motor power supply regulation circuit.

[0121] In one embodiment, the power factor correction circuit 31 may specifically include a first diode D1, a second diode D2, a third diode D3, a fourth diode D4, a fifth inductor L5, a sixth inductor L6, a fifth diode D5, a sixth diode D6, a fifteenth switch tube Q15, a sixteenth switch tube Q16 and a sixth capacitor C6.

[0122] Among them, the first end of the first diode D1 is coupled to the second end of the third diode D3 and the first end of the AC power source 101, the second end of the first diode D1 is coupled to the second end of the second diode D2, the first end of the fifth inductor L5 and the first end of the sixth inductor L6, the first end of the second diode D2 is coupled to the second end of the fourth diode D4 and the second end of the AC power source 101, the first end of the third diode D3 is coupled to the first end of the fourth diode D4, the second end of the fifteenth switch tube Q15, the second end of the sixteenth switch tube Q16 and the second end of the sixth capacitor C6, the second end of the fifth inductor L5 is coupled to the first end of the fifth diode D5 and the first end of the fifteenth switch tube Q15, the second end of the sixth inductor L6 is coupled to the first end of the sixth diode D6 and the first end of the sixteenth switch tube Q16, and the second end of the fifth diode D5 is coupled to the second end of the sixth diode D6 and the first end of the sixth capacitor C6.

[0123] It can be understood that the third end of the fifteenth switch tube Q15 and the third end of the sixteenth switch tube Q16 are also specifically coupled to the control circuit 35, so as to receive the first control signal and / or the second control signal sent by the control circuit 35, and trigger conduction or shutdown under the action of the first control signal and / or the second control signal to adjust the first DC signal.

[0124] Please continue reading Figure 6 , Figure 6 yes Figure 3 A schematic structural diagram of a second embodiment of a power factor correction circuit in a motor power supply regulation circuit.

[0125] In one embodiment, the power factor correction circuit 31 may further specifically include a seventh inductor L7, a seventeenth switch tube Q17, a seventh diode D7 and a seventh capacitor C7, wherein the first end of the seventh inductor L7 is coupled to the first end of the AC power supply 101, the second end of the seventh inductor L7 is coupled to the first end of the seventeenth switch tube Q17 and the first end of the seventh diode D7, the second end of the seventh diode D7 is coupled to the first end of the seventh capacitor C7, and the second end of the seventeenth switch tube Q17 is coupled to the second end of the AC power supply 101 and the second end of the seventh capacitor C7.

[0126] The third end of the seventeenth switch tube Q17 is also coupled to the control circuit 35 to receive the first control signal sent by the control circuit 35 and trigger on or off under the action of the first control signal to adjust the first DC signal.

[0127] Please continue reading Figure 7 , Figure 7 yes Figure 3 A schematic structural diagram of a third embodiment of a power factor correction circuit in a motor power supply regulation circuit.

[0128] In another embodiment, the power factor correction circuit 31 may further specifically include an eighth inductor L8, a ninth inductor L9, an eighth diode D8, a ninth diode D9, an eighteenth switch tube Q18, a nineteenth switch tube Q19 and an eighth capacitor C8; a first end of the eighth inductor L8 is coupled to the first end of the AC power supply 101, a second end of the eighth inductor L8 is coupled to the first end of the eighth diode D8 and the first end of the eighteenth switch tube Q18, a first end of the ninth inductor L9 is coupled to the second end of the AC power supply 101, a second end of the ninth inductor L9 is coupled to the first end of the ninth diode D9 and the first end of the nineteenth switch tube Q19, a second end of the eighth diode D8 is coupled to the second end of the ninth diode D9 and the first end of the eighth capacitor C8, and a second end of the eighteenth switch tube Q18 is coupled to the second end of the nineteenth switch tube Q19 and the second end of the eighth capacitor C8.

[0129] Among them, the third end of the eighteenth switch tube Q18 and the third end of the nineteenth switch tube Q19 are also specifically coupled to the control circuit 35, so as to receive the first control signal sent by the control circuit 35, and trigger conduction or shutdown under the action of the first control signal to adjust the first DC signal.

[0130] Please continue reading Figure 8 , Figure 8 yes Figure 3 A schematic structural diagram of a fourth embodiment of a power factor correction circuit in a motor power supply regulation circuit.

[0131] In another embodiment, the power factor correction circuit 31 may further include a tenth inductor L10, an eleventh inductor L11, a twentieth switch tube Q20, a twenty-first switch tube Q21, a twenty-second switch tube Q22, a twenty-third switch tube Q23, a tenth diode D10, an eleventh diode D11 and a ninth capacitor C9; a first end of the tenth inductor L10 is coupled to a first end of the eleventh inductor L11 and a first end of the AC power source 101, a second end of the tenth inductor L10 is coupled to a second end of the twentieth switch tube Q20 and a first end of the twenty-second switch tube Q22, and a first end of the tenth inductor L10 is coupled to a second end of the twentieth switch tube Q20 and a first end of the twenty-second switch tube Q22. The second end of the eleventh inductor L11 is coupled to the second end of the twenty-first switch tube Q21 and the first end of the twenty-third switch tube Q23, the first end of the tenth diode D10 is coupled to the second end of the eleventh diode D11 and the second end of the AC power source 101, the first end of the twentieth switch tube Q20 is coupled to the first end of the twenty-first switch tube Q21, the second end of the tenth diode D10 and the first end of the ninth capacitor C9, and the second end of the twenty-second switch tube Q22 is coupled to the second end of the twenty-third switch tube Q23, the first end of the eleventh diode D11 and the second end of the ninth capacitor C9.

[0132] Among them, the third end of the twenty-second switch tube Q22 and the third end of the twenty-third switch tube Q23 are specifically also coupled to the control circuit 35, so as to receive the first control signal sent by the control circuit 35, and trigger conduction or shutdown under the action of the first control signal to adjust the first DC signal.

[0133] It is understandable that the above-mentioned power factor correction circuits 31 are all explained based on single-phase power factor correction. For the AC power supply 101 as a three-phase AC input, the power factor correction circuit 31 can also be any reasonable circuit such as a single Boost (Boost Chopper) circuit, a dual Boost circuit, a triple Boost circuit, and a three-phase Vienna circuit, which is determined by the actual application scenario and is not limited in this application.

[0134] Please continue reading Fig. 9 , Fig. 9 yes Figure 3 A structural schematic diagram of an embodiment of a second switch subcircuit in a motor power supply regulation circuit.

[0135] In one embodiment, the second switch sub-circuit 341 includes a fifth switch tube Q5, a sixth switch tube Q6, a seventh switch tube Q7, an eighth switch tube Q8, a second inductor L2, and a third capacitor C3.

[0136] Among them, the second end of the fifth switch tube Q5 is coupled to the third end of the primary winding 3221 and the first end of the seventh switch tube Q7, the second end of the sixth switch tube Q6 is coupled to the fourth end of the primary winding 3221 and the first end of the eighth switch tube Q8, the first end of the fifth switch tube Q5 is coupled to the first end of the second inductor L2, the second end of the second inductor L2 is coupled to the first end of the sixth switch tube Q6, the first end of the third capacitor C3 and the first end of the first power conversion circuit 33, and the second end of the seventh switch tube Q7 is coupled to the second end of the eighth switch tube Q8, the second end of the third capacitor C3 and the second end of the first power conversion circuit 33.

[0137] In other embodiments, the second inductor L2 may be replaced by an electrical connection line, that is, the second inductor L2 may be removed from the second switch sub-circuit 341 . The specific value may be determined by the actual application scenario, and the present application does not limit this.

[0138] It can be understood that the third end of each of the fifth switch tube Q5, the sixth switch tube Q6, the seventh switch tube Q7, and the eighth switch tube Q8 is coupled to the control circuit 35 so as to receive the second drive signal sent by the control circuit 35 and trigger conduction or shutdown under the action of the second drive signal to achieve corresponding signal conversion.

[0139] Please continue reading Fig.10 , Fig.10 yes Figure 3 A structural schematic diagram of an embodiment of an inverter circuit in a motor power supply regulation circuit.

[0140] In one embodiment, the inverter circuit 342 specifically also includes a twenty-fourth switch tube Q24, a twenty-fifth switch tube Q25, a twenty-sixth switch tube Q26, a twenty-seventh switch tube Q27, a twenty-eighth switch tube Q28, and a twenty-ninth switch tube Q29. The first end of the twenty-fourth switch tube Q24 is coupled to the first end of the twenty-fifth switch tube Q25 and the first end of the twenty-sixth switch tube Q26, the second end of the twenty-seventh switch tube Q27 is coupled to the second end of the twenty-eighth switch tube Q28 and the second end of the twenty-ninth switch tube Q29, the second end of the twenty-fourth switch tube Q24 is coupled to the first end of the twenty-seventh switch tube Q27 and the first end of the AC motor 103, the second end of the twenty-fifth switch tube Q25 is coupled to the first end of the twenty-eighth switch tube Q28 and the second end of the AC motor 103, and the second end of the twenty-sixth switch tube Q26 is coupled to the first end of the twenty-ninth switch tube Q29 and the third end of the AC motor 103.

[0141] Among them, the third end of each of the twenty-fourth switch tube Q24, the twenty-fifth switch tube Q25, the twenty-sixth switch tube Q26, the twenty-seventh switch tube Q27, the twenty-eighth switch tube Q28, and the twenty-ninth switch tube Q29 is coupled to the control circuit 35 so as to receive the third control signal correspondingly sent by the control circuit 35, and trigger conduction or shutdown under the action of the third control signal to achieve corresponding signal conversion.

[0142] In addition, the AC motor 103 is specifically a three-phase motor, and the first end, the second end and the third end of the AC motor 103 correspond to the A phase, the B phase and the C phase of the three-phase motor respectively.

[0143] It is understandable that the above-mentioned inverter circuit 342 specifically corresponds to the end output circuit of the AC motor 103 being a three-phase motor. When the AC motor 103 is a single-phase motor, the inverter circuit 342 can also be a bridge circuit composed of four switching tubes, or an on-off circuit composed of a single switching tube, or any other reasonable power supply output circuit, which is determined by the actual application scenario and is not limited in this application.

[0144] It is understandable that, in this embodiment, the isolation transformer 322, the primary winding 3221 and the secondary winding 3222 are respectively the same as the isolation transformer 122, the primary winding 1221 and the secondary winding 1222. For details, please refer to Figure 1 And the related text content will not be repeated here.

[0145] This application also specifically adopts a motor power control method, see Fig.11 , Fig.11 This is a flow chart of the first embodiment of the motor power supply control method of the present application. Specifically, it may include the following steps:

[0146] S41: Receive an AC input signal provided by an external AC power source.

[0147] It can be understood that the motor power control method in this embodiment is specifically a control method for a motor power regulation circuit to use an AC power supply to supply power to multiple motor loads. The motor power regulation circuit specifically includes a power factor correction circuit, an isolation circuit, a first power conversion circuit, a second power conversion circuit, and a control circuit. The isolation circuit includes a first switch subcircuit and an isolation transformer. The isolation circuit includes a first switch subcircuit and an isolation transformer. The isolation transformer includes a primary winding and at least two secondary windings coupled to the primary winding. The power factor correction circuit is used to couple with the AC power supply. The first switch subcircuit couples the power factor correction circuit and the primary winding. Each first power conversion circuit is coupled to a secondary winding and is used to couple with a DC motor. Each second power conversion circuit is coupled to a secondary winding and is used to couple with an AC motor. The control circuit couples the power factor correction circuit, the first switch subcircuit, each first power conversion circuit, and each second power conversion circuit.

[0148] It is worth noting that the AC power supply can be understood as AC power supply from a power grid, or a power regulation circuit that performs power conversion and regulation on the power supply from the power grid to obtain an AC power supply output.

[0149] Specifically, the power factor correction circuit receives an AC input signal from an external AC power source.

[0150] S42: Adjust a first characteristic parameter of a first control signal based on the AC input signal.

[0151] The control circuit is used for sampling and analyzing the AC input signal in the power factor correction circuit, and based on this, dynamically adjusting the first characteristic parameter of the first control signal sent to the power factor correction circuit.

[0152] Optionally, the first control signal may specifically be one or more of any reasonable control signals such as a PWM signal or a PFM signal, and the present application does not limit this.

[0153] Optionally, the first characteristic parameter may specifically be one or more of any reasonable parameters such as duty cycle or frequency, and this application does not limit this.

[0154] S43: Convert the AC input signal into a first DC signal using the first control signal.

[0155] In which, the power factor correction circuit is also used to receive a first control signal sent by the control circuit, and adjust the switching state of each switch tube and / or each switch contact inside it in response to the first control signal to convert the AC input signal into a first DC signal, and dynamically adjust the first DC signal in response to real-time changes of the AC input signal.

[0156] S44: Convert the first DC signal into a first AC signal using the first driving signal.

[0157] Furthermore, each first switching sub-circuit receives a first DC signal from the power factor correction circuit and a first drive signal sent by the control circuit, and converts the first DC signal into a first AC signal according to the timing control of the first drive signal, so as to generate the required AC waveform using precise switching control.

[0158] S45: Convert the first AC signal into at least two second AC signals respectively.

[0159] Furthermore, the primary winding of the isolation transformer receives the first AC signal from the first switch subcircuit, and converts it through electromagnetic induction and converts it into at least two second AC signals through at least two secondary windings. This design allows efficient energy transfer while achieving electrical isolation, improving the safety and stability of the system.

[0160] S46: Convert the second AC signal into a DC drive signal to output to the external DC motor.

[0161] The second AC signal output by each secondary winding is received by a corresponding first power conversion circuit, which converts the second AC signal into a DC drive signal specifically for the DC motor. This usually includes rectification and filtering processes to ensure the stability and applicability of the output DC signal.

[0162] S47: Convert the second AC signal into an AC drive signal to output to an external AC motor.

[0163] At the same time, the second AC signals of other secondary windings are received by corresponding second power conversion circuits, which convert the second AC signals into AC drive signals for use by the AC motor. This conversion may involve an inversion process to generate AC power that meets the requirements of the AC motor.

[0164] See also Fig.12 , Fig.12 yes Fig.11 In one embodiment, the power control method of the present application includes not only the above S41-S47, but also some more specific steps. Specifically, the above S47 may also include the following steps:

[0165] S471: Convert the second AC signal into a second DC signal based on the second driving signal.

[0166] Specifically, the second power conversion circuit in the motor power regulation circuit also includes a second switch subcircuit and an inverter circuit. The second switch subcircuit is coupled to a secondary winding and an inverter circuit. The inverter circuit is used to couple to the AC motor.

[0167] Among them, the second switching sub-circuit is used to receive the second AC signal sent by the secondary winding and the second drive signal sent by the control circuit, and adjust the switching state of each switch tube and / or each switch contact inside it based on the second drive signal to convert the second AC signal into a second DC signal.

[0168] S472: Convert the second DC signal into an AC driving signal using the fourth control signal.

[0169] The inverter circuit is used to receive the second DC signal sent by the second switch sub-circuit and the fourth control signal sent by the control circuit, so as to adjust the switching state of each switch tube and / or each switch contact inside it under the action of the fourth control signal, and then convert the second DC signal into an AC drive signal to provide it to the AC motor.

[0170] See also Fig.13 , Fig.13 : is a flow chart of the second embodiment of the motor power control method of the present application. The motor power control method of this embodiment is Fig.11 A flowchart of a detailed implementation of the motor power supply control method in the embodiment of the present invention specifically includes the following steps:

[0171] S51: Receive an AC input signal provided by an external AC power source.

[0172] S52: Adjust a first characteristic parameter of a first control signal based on the AC input signal.

[0173] S53: Convert the AC input signal into a first DC signal using the first control signal.

[0174] Among them, S51, S52 and S53 are Fig.11 S41, S42 and S43 are the same, please refer to S41, S42 and S43 and their related text descriptions for details, which will not be repeated here.

[0175] S54: adjusting a fifth characteristic parameter of the fifth control signal based on the power input signal.

[0176] Specifically, the motor power regulation circuit further includes a backup power supply, a power input conversion circuit and a power supply bus. The power input conversion circuit is coupled to the backup power supply, the power supply bus and the control circuit. The power input conversion circuit is used to receive the power input signal provided by the backup power supply. The power supply bus is further coupled to the power factor correction circuit and the first switch sub-circuit.

[0177] Among them, the power input conversion circuit is used to receive the power input signal provided by the backup power supply, and the control circuit is specifically used to sample and obtain the power input signal from the power input conversion circuit, and calculate and adjust the fifth characteristic parameter of the fifth control signal sent to the power input conversion circuit based on the power input signal.

[0178] S55: using the fifth control signal to convert the power input signal and superimpose it on the first DC signal.

[0179] The power input conversion circuit adjusts the switching state of each switch tube and / or each switch contact inside it under the action of the fifth control signal, so as to convert the power input signal and superimpose it with the first DC signal output by the power factor correction circuit to ensure the stability and redundancy of the power supply, and output it to the power supply bus, and send the first DC signal to the first switch sub-circuit through the power supply bus.

[0180] S56: Convert the first DC signal into a first AC signal using the first driving signal.

[0181] S57: Convert the first AC signal into at least two second AC signals respectively.

[0182] S58: Convert the second AC signal into a DC drive signal to output to the external DC motor.

[0183] S59: Convert the second AC signal into an AC driving signal to output to an external AC motor.

[0184] Among them, S56, S57, S58 and S59 are Fig.11 S44, S45, S46 and S47 are the same. Please refer to S44, S45, S46 and S47 and their related text descriptions for details, which will not be repeated here.

[0185] It is understandable that in some other embodiments, the motor power regulation circuit specifically includes some other more specific circuit units to be able to implement other more specific motor power control methods. For details, please refer to Figure 1-Figure 10 And related text descriptions will not be repeated here.

[0186] This application also specifically uses an electronic device, see Fig.14 , Fig.14 Schematic diagram of the framework of an electronic device of the present application. In this embodiment, the electronic device 60 includes a housing 61 and a motor power supply regulating circuit 62 connected to the housing 61 .

[0187] Optionally, the electronic device 60 may be a power supply device for any reasonable mechanical device integrated with a motor, such as medical motor equipment or industrial manufacturing equipment, and the present application does not limit this.

[0188] It should be noted that the motor power regulation circuit 62 described in this embodiment is the motor power regulation circuit 10, the motor power regulation circuit 20 or the motor power regulation circuit 30 described in any one of the above embodiments. Figure 1-Figure 10 And the related text content will not be repeated here.

[0189] The beneficial effects of the present application are as follows: Different from the prior art, the power factor correction circuit in the motor power regulation circuit provided by the present application receives the first control signal sent by the control circuit, and adjusts the AC input signal to a first DC signal based on the first control signal; each first switch sub-circuit receives the first DC signal sent by the power factor correction circuit and the first drive signal sent by the control circuit, and converts the first DC signal into a first AC signal based on the first drive signal; the primary winding receives the first AC signal sent by the first switch sub-circuit, and uses at least two secondary windings to convert the first AC signal into at least two second AC signals respectively; each first power conversion circuit receives the second AC signal sent by each secondary winding, and converts the second AC signal into a DC drive signal to output to the DC motor; each second power conversion circuit receives the second AC signal sent by each secondary winding, and converts the second AC signal into an AC drive signal to output to the DC motor; The drive signal is output to the AC motor, so that each circuit can be integrated into the same module, and the power factor correction circuit, the first power conversion circuit and the second power conversion circuit are controlled by the same control circuit, which effectively simplifies the system hardware circuit and improves the reliability and efficiency of the drive control; and compared with the signal feedback adjustment in response to the output to the motor load, the drive control implemented in response to the AC input signal provided by the AC power supply effectively ensures the timeliness of the control, improves the control efficiency, and ensures the optimization of the entire motor drive conversion efficiency; in addition, compared with configuring an independent isolation transformer for each motor load, the use of a multi-winding transformer further improves the integration of the motor power regulation circuit, simplifies the drive control implemented by the control circuit, and can also achieve primary and secondary side safety electrical isolation and voltage matching through the isolation transformer, meeting the primary and secondary side electrical safety insulation requirements.

[0190] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A motor power supply regulation circuit, characterized in that: The motor power supply regulation circuit comprises: A power factor correction circuit, configured to be coupled to an AC power source to receive an AC input signal provided by the AC power source and convert the AC input signal into a first DC signal; An isolation circuit, comprising a first switch subcircuit and an isolation transformer, wherein the isolation transformer comprises a primary winding and at least two secondary windings coupled to the primary winding, and the first switch subcircuit is coupled to the power factor correction circuit and the primary winding; A first power conversion circuit, each of which is coupled to one of the secondary windings and is used to couple to a DC motor; A second power conversion circuit, each of which is coupled to one of the secondary windings and is used to couple to an AC motor; a control circuit coupled to the power factor correction circuit, the first switch sub-circuit, each of the first power conversion circuits, and each of the second power conversion circuits, wherein the control circuit samples and acquires the AC input signal to adjust a first characteristic parameter of a first control signal based on the AC input signal; Wherein, the power factor correction circuit receives the first control signal sent by the control circuit, and adjusts the first DC signal by the AC input signal based on the first control signal; each of the first switch sub-circuits receives the first DC signal sent by the power factor correction circuit and the first drive signal sent by the control circuit, and converts the first DC signal into a first AC signal based on the first drive signal; the primary winding receives the first AC signal sent by the first switch sub-circuit, and uses at least two secondary windings to convert the first AC signal into at least two second AC signals respectively; each of the first power conversion circuits receives the second AC signal sent by each of the secondary windings, and converts the second AC signal into a DC drive signal to output to the DC motor; each of the second power conversion circuits receives the second AC signal sent by each of the secondary windings, and converts the second AC signal into an AC drive signal to output to the AC motor; The control circuit samples and acquires the first DC signal to adjust a second characteristic parameter of a second control signal based on the first DC signal, and sends the second control signal to the power factor correction circuit so that the power factor correction circuit limits the first DC signal within a first threshold range under the action of the second control signal; wherein the first characteristic parameter is positively correlated with the AC input signal, and the power factor correction circuit has a higher priority in responding to the first control signal than in responding to the second control signal.

2. The motor power supply regulating circuit according to claim 1, characterized in that: The control circuit samples and acquires the DC drive signal to adjust a third characteristic parameter of a third control signal based on the DC drive signal, and sends the third control signal to the first power conversion circuit, so that the first power conversion circuit limits the DC drive signal within a second threshold range under the action of the third control signal; The control circuit samples and acquires the AC drive signal to adjust a fourth characteristic parameter of a fourth control signal based on the AC drive signal, and sends the fourth control signal to the second power conversion circuit so that the second power conversion circuit limits the AC drive signal within a third threshold range under the action of the fourth control signal.

3. The motor power supply regulating circuit according to claim 2, characterized in that: The motor power regulation circuit further includes a backup power supply, a power input conversion circuit and a power supply bus, wherein the power input conversion circuit is coupled to the backup power supply, the power supply bus and the control circuit, the power supply bus is coupled to the power factor correction circuit and the first switch sub-circuit, the power input conversion circuit receives a power input signal provided by the backup power supply, and converts and superimposes the power input signal on the first DC signal to output it to the power supply bus, and sends the first DC signal to the first switch sub-circuit through the power supply bus; The control circuit samples and acquires the power input signal to adjust the fifth characteristic parameter of the fifth control signal based on the power input signal, and sends the fifth control signal to the power input conversion circuit so that the power input conversion circuit adjusts the first DC signal based on the fifth control signal; wherein the fifth characteristic parameter is positively correlated with the power input signal.

4. The motor power supply regulating circuit according to claim 2, characterized in that: The second power conversion circuit further includes a second switch subcircuit and an inverter circuit, wherein the second switch subcircuit is coupled to the secondary winding and the inverter circuit, and the inverter circuit is used to couple to the AC motor; Among them, the second switch sub-circuit receives the second AC signal sent by the secondary winding and the second drive signal sent by the control circuit, and converts the second AC signal into a second DC signal based on the second drive signal; the inverter circuit receives the second DC signal sent by the second switch sub-circuit and the fourth control signal sent by the control circuit, so as to convert the second DC signal into the AC drive signal based on the fourth control signal.

5. The motor power supply regulating circuit according to any one of claims 1 to 4, characterized in that: The first switch subcircuit includes a first capacitor, a first switch tube, a second switch tube, a third switch tube, a fourth switch tube, a second capacitor and a first inductor; Wherein, the first end of the first capacitor is coupled to the first end of the power factor correction circuit, the first end of the first switch tube and the first end of the second switch tube, the second end of the first capacitor is coupled to the second end of the power factor correction circuit, the second end of the third switch tube and the second end of the fourth switch tube, the second end of the first switch tube is coupled to the first end of the third switch tube and the first end of the second capacitor, the second end of the second switch tube is coupled to the first end of the fourth switch tube and the second end of the primary winding, the second end of the second capacitor is coupled to the first end of the first inductor, and the second end of the first inductor is coupled to the first end of the primary winding; The third end of each of the first switch tube, the second switch tube, the third switch tube, and the fourth switch tube is connected to the control circuit.

6. The motor power supply regulating circuit according to any one of claims 1 to 4, characterized in that: The power factor correction circuit includes a first diode, a second diode, a third diode, a fourth diode, a fifth inductor, a sixth inductor, a fifth diode, a sixth diode, a fifteenth switch tube, a sixteenth switch tube and a sixth capacitor; Among them, the first end of the first diode is coupled to the second end of the third diode and the first end of the AC power supply, the second end of the first diode is coupled to the second end of the second diode, the first end of the fifth inductor and the first end of the sixth inductor, the first end of the second diode is coupled to the second end of the fourth diode and the second end of the AC power supply, the first end of the third diode is coupled to the first end of the fourth diode, the second end of the fifteenth switch tube, the second end of the sixteenth switch tube and the second end of the sixth capacitor, the second end of the fifth inductor is coupled to the first end of the fifth diode and the first end of the fifteenth switch tube, the second end of the sixth inductor is coupled to the first end of the sixth diode and the first end of the sixteenth switch tube, the second end of the fifth diode is coupled to the second end of the sixth diode and the first end of the sixth capacitor, and the third end of the fifteenth switch tube and the third end of the sixteenth switch tube are both coupled to the control circuit.

7. A motor power control method, characterized in that: The motor power supply control method comprises: Receiving an AC input signal provided by an external AC power source; adjusting a first characteristic parameter of a first control signal based on the AC input signal; converting the AC input signal into a first DC signal using the first control signal; adjusting a second characteristic parameter of a second control signal based on the first DC signal; The first DC signal is limited to a first threshold range by using the second control signal; wherein the first characteristic parameter is positively correlated with the AC input signal, and the first control signal has a higher priority than the second control signal; Converting the first DC signal into a first AC signal using a first driving signal; Converting the first AC signal into at least two second AC signals respectively; converting the second AC signal into a DC drive signal to output to an external DC motor; The second AC signal is converted into an AC driving signal to be output to an external AC motor.

8. The motor power supply control method according to claim 7, characterized in that: After the step of converting the AC input signal into a first DC signal using the first control signal and before the step of converting the first DC signal into a first AC signal using the first drive signal, the method further includes: adjusting a fifth characteristic parameter of a fifth control signal based on the power input signal; wherein the fifth characteristic parameter is positively correlated with the power input signal; The power input signal is converted and superimposed on the first DC signal using the fifth control signal.

9. The motor power supply control method according to claim 7, characterized in that: The step of converting the second AC signal into an AC driving signal comprises: converting the second AC signal into a second DC signal based on a second driving signal; The second DC signal is converted into an AC driving signal using a fourth control signal.

10. An electronic device, characterized in that: The electronic device comprises a housing and a motor power supply regulating circuit coupled to each other; Wherein, the motor power supply regulation circuit is the motor power supply regulation circuit as described in any one of claims 1-6.

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