A drive control circuit for inverter field effect tube

Abstract

The invention discloses an inverter field effect tube drive control circuit, which relates to the field of inverter technology, including a power supply control module for power processing and power transmission; an inverter control module for single-phase inverter regulation; an intelligent control module for module control; an auxiliary power supply module for storing energy when the inverter control module performs phase switching, releasing the stored power and superimposing the power with the power supply control module after phase switching, and transmitting the superimposed power to the inverter control module; a path switching module for controlling the power transmission state of the auxiliary power supply module after phase switching; an inverter regulation module for providing direct current power and suppressing low-frequency ripples; and an output module for filtering and powering connected electrical equipment. The inverter field effect tube drive control circuit of the invention can control the inverter control module to perform phase switching smoothly and quickly, suppress the influence of low-frequency current ripples, and improve the stability of the inverter control module.

Description

Technical Field

[0001] The invention relates to the technical field of inverters, in particular to an inverter field effect tube drive control circuit. Background Art

[0002] An inverter is a converter that converts direct current power into constant frequency and constant voltage or frequency and voltage modulated alternating current. It is generally composed of an inverter bridge, a microcontroller and a filter circuit. It is widely used in air conditioners, motors, electric work, etc. The inverter bridge used in the inverter in the prior art is generally composed of field effect transistors. DC-AC conversion is performed through the inverter bridge, and then filtered by the filter circuit. However, during the inversion phase change process, the current pulsation caused by the inductor makes it impossible for the inverter to smoothly perform phase change control. Subsequently, after the phase change, the power floats. In addition, when the inverter is performing inversion work, it is easily affected by the low-frequency current ripple on the input side, which reduces the stability of the inverter. Therefore, it needs to be improved. Summary of the invention

[0003] The embodiment of the present invention provides an inverter field effect transistor drive control circuit to solve the problems raised in the above background technology.

[0004] According to an embodiment of the present invention, an inverter field effect tube drive control circuit is provided, comprising: a power control module, an inverter control module, an intelligent control module, an auxiliary power module, a path switching module, an inverter regulation module and an output module;

[0005] A power control module, connected to the inverter control module and the intelligent control module, for receiving AC power, rectifying and filtering the AC power and outputting first power, transmitting the first power to the inverter control module, and stopping the transmission of the first power when receiving a first control signal output by the intelligent control module;

[0006] an inverter control module, connected to the intelligent control module and the auxiliary power supply module, for performing inverter regulation processing on the input first electric energy and the third electric energy output by the auxiliary power supply module and outputting the second electric energy when receiving the first pulse signal, the second pulse signal, the third pulse signal and the fourth pulse signal output by the intelligent control module;

[0007] An intelligent control module, configured to output a first pulse signal, a second pulse signal, a third pulse signal and a fourth pulse signal, output a fifth pulse signal when outputting the first pulse signal, output a sixth pulse signal when outputting the second pulse signal, output a first control signal after the inverter control module completes commutation, and output a seventh pulse signal when outputting the first control signal and the first pulse signal, and stop outputting the first control signal after the inverter control module performs stable commutation;

[0008] an auxiliary power supply module, connected to the intelligent control module, the power supply control module and the path switching module, and configured to output a second control signal and receive and store the first electric energy output by the power supply control module when the intelligent control module does not output the first pulse signal and the second pulse signal, release the stored electric energy and perform superposition processing with the first electric energy when the second control signal is not received, output the third electric energy, and transmit the third electric energy to the inverter control module when the first pulse signal or the second pulse signal transmitted by the path switching module is received;

[0009] A path switching module, connected to the intelligent control module, for transmitting the first pulse signal to the auxiliary power module when receiving the first pulse signal and the first control signal, and for transmitting the second pulse signal to the auxiliary power module when receiving the second pulse signal and the first control signal;

[0010] an inverter regulation module, connected to the auxiliary power module, the inverter control module and the intelligent control module, and configured to receive the second electric energy or the third electric energy and provide direct current electric energy to the output module when receiving the fifth pulse signal or the sixth pulse signal;

[0011] The output module is connected to the inverter regulation module and the inverter control module, and is used to filter the second electric energy, and when receiving the DC electric energy output by the inverter regulation module, suppress the low-frequency ripple in the second electric energy, and transmit the processed second electric energy to the connected electrical equipment.

[0012] As a further solution of the present invention: the power control module includes a power interface, a first rectifier, a first capacitor, a first resistor, a fourth power tube, a first switch tube and a first diode; the intelligent control module includes a first controller;

[0013] Preferably, the first end and the second end of the power interface are respectively connected to the first end and the second end of the first rectifier, the third end of the first rectifier is connected to one end of the first capacitor and the drain of the fourth power tube and the gate of the fourth power tube and the collector of the first switching tube through the first resistor, the base of the first switching tube is connected to the IO1 end of the first controller, the emitter of the first switching tube is connected to the other end of the first capacitor and the fourth end of the first rectifier, the source of the fourth power tube is connected to the anode of the first diode, and the cathode of the first diode is connected to the inverter control module.

[0014] As a further solution of the present invention: the inverter control module includes a sixth power tube, a seventh power tube, an eighth power tube and a ninth power tube;

[0015] Preferably, the drain of the sixth power tube is connected to the drain of the eighth power tube and the cathode of the first diode, the source of the sixth power tube is connected to the drain of the seventh power tube and the output module, the source of the eighth power tube is connected to the drain of the ninth power tube and the output module, the source of the seventh power tube is connected to the source of the ninth power tube and the fourth end of the first rectifier, and the gate of the sixth power tube, the gate of the seventh power tube, the gate of the eighth power tube and the gate of the ninth power tube are respectively connected to the IO2 end, IO3 end, IO4 end and IO5 end of the first controller.

[0016] As a further solution of the present invention: the output module includes a first inductor, a second capacitor, a third inductor, a third capacitor and an output port;

[0017] Preferably, the first end of the output port is connected to the first end of the second capacitor and connected to the source of the sixth power tube through the first inductor, the second end of the output port is connected to the first end of the third capacitor and connected to the source of the eighth power tube through the second inductor, and the second end of the second capacitor is connected to the second end of the third capacitor and the inverter regulation module.

[0018] As a further solution of the present invention: the inverter regulation module includes a tenth power tube, an eleventh power tube and a twelfth power tube;

[0019] Preferably, the drain of the tenth power tube is connected to the drain of the eighth power tube, the source of the tenth power tube is connected to the source of the twelfth power tube, the drain of the eleventh power tube and the second end of the second capacitor, the source of the eleventh power tube is connected to the source of the ninth power tube, the drain of the twelfth power tube is connected to the auxiliary power supply module, and the gate of the tenth power tube, the gate of the eleventh power tube and the gate of the twelfth power tube are respectively connected to the IO6 terminal, the IO7 terminal and the IO8 terminal of the first controller.

[0020] As a further solution of the present invention: the auxiliary power supply module includes a second power tube, a first power tube, a third power tube, a second resistor, a fifth power tube, a first logic chip and a first energy storage capacitor;

[0021] Preferably, the drain of the second power tube is connected to the source of the third power tube and the third end of the first rectifier, the source of the second power tube is connected to the first end of the first energy storage capacitor, the drain of the third power tube is connected to the second end of the first energy storage capacitor and the drain of the first power tube, the source of the first power tube is connected to the fourth end of the first rectifier, the gate of the third power tube is connected to the gate of the second power tube, the gate of the first power tube and the F end of the first logic chip and is grounded through the second resistor, the A end and the B end of the first logic chip are respectively connected to the IO2 end and the IO4 end of the first controller, and the gate of the fifth power tube is connected to the path switching module.

[0022] As a further solution of the present invention: the path switching module includes a second diode, a third diode, a second logic chip, a third logic chip, a fourth capacitor, a fifth capacitor and a first analog switch;

[0023] Preferably, the anode of the second diode is connected to the IN1 terminal of the first analog switch and the IO2 terminal of the first controller, the cathode of the second diode is connected to the A terminal of the second logic chip and is grounded through a fourth capacitor, the B terminal of the second logic chip is connected to the A terminal of the third logic chip and the IO1 terminal of the first controller, the anode of the third diode is connected to the IN2 terminal of the first analog switch and the IO4 terminal of the first controller, the cathode of the third diode is connected to the B terminal of the third logic chip and is grounded through a capacitor, the F terminal of the second logic chip is connected to the CTRL1 terminal of the first analog switch, the F terminal of the third logic chip is connected to the CTRL2 terminal of the first analog switch, and the OUT2 terminal and OUT1 terminal of the first analog switch are both connected to the gate of the fifth power tube.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: the inverter field effect transistor drive control circuit of the present invention is composed of an intelligent control module cooperating with an inverter control module to invert the input electric energy, and during the phase change process, the auxiliary power supply module stores energy, and after the phase change, the auxiliary power supply module and the power supply control module perform electric energy superposition processing, and at the same time, the inverter control module performs inverter regulation processing on the superimposed electric energy, thereby avoiding the phenomenon of electric energy reduction due to current pulsation, so that the inverter control module can smoothly and quickly perform phase change work, and at the same time, the inverter regulation module can suppress the influence of the low-frequency current ripple of the electric energy according to the input change of the electric energy, thereby improving the stability of the inverter control module. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0026] Figure 1 A schematic block diagram of a principle of an inverter field effect transistor drive control circuit provided by an embodiment of the present invention.

[0027] Figure 2 A circuit diagram of an inverter field effect transistor drive control circuit provided by an embodiment of the present invention.

[0028] Figure 3 A circuit diagram of a path switching module provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In one embodiment, see Figure 1 , an inverter field effect tube drive control circuit, comprising: a power control module 1, an inverter control module 2, an intelligent control module 3, an auxiliary power module 4, a path switching module 5, an inverter regulation module 6 and an output module 7;

[0031] Specifically, the power control module 1 is connected to the inverter control module 2 and the intelligent control module 3, and is used to receive the AC power, rectify and filter the AC power and output the first power, transmit the first power to the inverter control module 2, and stop transmitting the first power when receiving the first control signal output by the intelligent control module 3;

[0032] The inverter control module 2 is connected to the intelligent control module 3 and the auxiliary power supply module 4, and is used to perform inverter regulation processing on the input first electric energy and the third electric energy output by the auxiliary power supply module 4 and output the second electric energy when receiving the first pulse signal, the second pulse signal, the third pulse signal and the fourth pulse signal output by the intelligent control module 3;

[0033] The intelligent control module 3 is used to output a first pulse signal, a second pulse signal, a third pulse signal and a fourth pulse signal. When the first pulse signal is output, the fifth pulse signal is output, and when the second pulse signal is output, the sixth pulse signal is output. After the inverter control module 2 completes the commutation, the first control signal is output, and when the first control signal and the first pulse signal are output, the seventh pulse signal is output. After the inverter control module 2 stabilizes the commutation, the first control signal is stopped.

[0034] The auxiliary power supply module 4 is connected to the intelligent control module 3, the power supply control module 1 and the path switching module 5, and is used to output the second control signal and receive and store the first electric energy output by the power supply control module 1 when the intelligent control module 3 does not output the first pulse signal and the second pulse signal, release the stored electric energy and perform superposition processing with the first electric energy when the second control signal is not received, and output the third electric energy, and transmit the third electric energy to the inverter control module 2 when the first pulse signal or the second pulse signal transmitted by the path switching module 5 is received;

[0035] A path switching module 5, connected to the intelligent control module 3, for transmitting the first pulse signal to the auxiliary power module 4 when receiving the first pulse signal and the first control signal, and for transmitting the second pulse signal to the auxiliary power module 4 when receiving the second pulse signal and the first control signal;

[0036] The inverter regulation module 6 is connected to the auxiliary power module 4, the inverter control module 2 and the intelligent control module 3, and is used to receive the second electric energy or the third electric energy and provide DC electric energy to the output module 7 when receiving the fifth pulse signal or the sixth pulse signal;

[0037] The output module 7 is connected to the inverter regulation module 6 and the inverter control module 2, and is used to filter the second electric energy, and when receiving the DC electric energy output by the inverter regulation module 6, suppress the low-frequency ripple in the second electric energy, and transmit the processed second electric energy to the connected electrical equipment.

[0038] In a specific embodiment, the power control module 1 can adopt a power control circuit composed of a power interface, a rectifier, a field effect transistor, a capacitor, etc., can be connected to AC power, and perform rectification, filtering and power transmission processing on the AC power; the inverter control module 2 can adopt an inverter control circuit composed of four groups of field effect transistors to perform DC-AC inversion processing on the input power; the intelligent control module 3 can adopt an intelligent control circuit composed of a single-chip microcomputer, which integrates many components such as an arithmetic unit, a controller, a memory, and an input and output device to realize signal processing, data storage, module control, timing control and other functions; the auxiliary power supply module 4 can adopt an auxiliary power supply circuit composed of a field effect transistor, a resistor and an energy storage capacitor, which can perform energy storage work during the phase change process, and after the phase change, it can communicate with the output of the power control module 1. The electric energy is superimposed to compensate for the voltage drop after phase switching; the above-mentioned path switching module 5 can adopt a path control circuit composed of logic chips, diodes, analog switches, etc., and can control the electric energy output by the auxiliary power supply module 4 and the inverter control module 2 to perform inverter regulation according to the phase switching state; the above-mentioned inverter regulation module 6 can adopt an inverter regulation circuit composed of field effect transistors, which can provide DC power, that is, DC bias and second harmonic voltage, for the output module 7, and then eliminate the second harmonic of the current in the electric energy input to the output module 7, and suppress the low-frequency ripple of the current; the above-mentioned output module 7 can adopt an output circuit composed of inductance, capacitance and output port, which can filter the input electric energy and receive the DC power provided by the inverter regulation module 6, and transmit the processed electric energy to the connected electrical equipment.

[0039] In another embodiment, see Figure 1 , Figure 2 and Figure 3The power control module 1 includes a power interface, a first rectifier T1, a first capacitor C1, a first resistor R1, a fourth power tube Q4, a first switch tube V1 and a first diode D1; the intelligent control module 3 includes a first controller U1;

[0040] Specifically, the first end and the second end of the power interface are respectively connected to the first end and the second end of the first rectifier T1, the third end of the first rectifier T1 is connected to one end of the first capacitor C1 and the drain of the fourth power tube Q4 and connected to the gate of the fourth power tube Q4 and the collector of the first switch tube V1 through the first resistor R1, the base of the first switch tube V1 is connected to the IO1 end of the first controller U1, the emitter of the first switch tube V1 is connected to the other end of the first capacitor C1 and the fourth end of the first rectifier T1, the source of the fourth power tube Q4 is connected to the anode of the first diode D1, and the cathode of the first diode D1 is connected to the inverter control module 2.

[0041] In a specific embodiment, the fourth power tube Q4 may be an N-channel field effect tube; the first switch tube V1 may be an NPN transistor; and the first controller U1 may be an STM32 single chip microcomputer.

[0042] Further, the inverter control module 2 includes a sixth power tube Q6, a seventh power tube Q7, an eighth power tube Q8 and a ninth power tube Q9;

[0043] Specifically, the drain of the sixth power tube Q6 is connected to the drain of the eighth power tube Q8 and the cathode of the first diode D1, the source of the sixth power tube Q6 is connected to the drain of the seventh power tube Q7 and the output module 7, the source of the eighth power tube Q8 is connected to the drain of the ninth power tube Q9 and the output module 7, the source of the seventh power tube Q7 is connected to the source of the ninth power tube Q9 and the fourth end of the first rectifier T1, and the gate of the sixth power tube Q6, the gate of the seventh power tube Q7, the gate of the eighth power tube Q8 and the gate of the ninth power tube Q9 are respectively connected to the IO2 end, the IO3 end, the IO4 end and the IO5 end of the first controller U1.

[0044] In a specific embodiment, the sixth power tube Q6, the seventh power tube Q7, the eighth power tube Q8 and the ninth power tube Q9 can all be N-channel field effect tubes, and respectively receive the first pulse signal output from the IO2 terminal of the first controller U1, the third pulse signal output from the IO3 terminal, the second pulse signal output from the IO4 terminal, and the fourth pulse signal output from the IO5 terminal.

[0045] Further, the output module 7 includes a first inductor L1, a second capacitor C2, a second inductor L3, a third capacitor C3 and an output port;

[0046] Specifically, the first end of the output port is connected to the first end of the second capacitor C2 and is connected to the source of the sixth power tube Q6 through the first inductor L1, the second end of the output port is connected to the first end of the third capacitor C3 and is connected to the source of the eighth power tube Q8 through the second inductor L2, and the second end of the second capacitor C2 is connected to the second end of the third capacitor C3 and the inverter regulation module 6.

[0047] In a specific embodiment, the first inductor L1 and the second capacitor C2 perform filtering processing, and the second inductor L2 and the third capacitor C3 perform filtering processing.

[0048] Further, the inverter regulation module 6 includes a tenth power tube Q10, an eleventh power tube Q11 and a twelfth power tube Q12;

[0049] Specifically, the drain of the tenth power tube Q10 is connected to the drain of the eighth power tube Q8, the source of the tenth power tube Q10 is connected to the source of the twelfth power tube Q12, the drain of the eleventh power tube Q11 and the second end of the second capacitor C2, the source of the eleventh power tube Q11 is connected to the source of the ninth power tube Q9, the drain of the twelfth power tube Q12 is connected to the auxiliary power supply module 4, and the gate of the tenth power tube Q10, the gate of the eleventh power tube Q11 and the gate of the twelfth power tube Q12 are respectively connected to the IO6 terminal, the IO7 terminal and the IO8 terminal of the first controller U1.

[0050] In a specific embodiment, the tenth power tube Q10, the eleventh power tube Q11 and the twelfth power tube Q12 can all be N-channel field effect tubes. When the auxiliary power module 4 is not supplying power, the tenth power tube Q10 and the eleventh power tube Q11 suppress the low-frequency ripples of the current of the electric energy input from the inverter control module 2 to the output module 7. When the auxiliary power module 4 is supplying power, the twelfth power tube Q12 and the eleventh power tube Q11 suppress the low-frequency ripples of the current of the electric energy input from the inverter control module 2 to the output module 7.

[0051] Further, the auxiliary power supply module 4 includes a second power tube Q2, a first power tube Q1, a third power tube Q3, a second resistor R2, a fifth power tube Q5, a first logic chip J1 and a first energy storage capacitor CD1;

[0052] Specifically, the drain of the second power tube Q2 is connected to the source of the third power tube Q3 and the third end of the first rectifier T1, the source of the second power tube Q2 is connected to the first end of the first energy storage capacitor CD1, the drain of the third power tube Q3 is connected to the second end of the first energy storage capacitor CD1 and the drain of the first power tube Q1, the source of the first power tube Q1 is connected to the fourth end of the first rectifier T1, the gate of the third power tube Q3 is connected to the gate of the second power tube Q2, the gate of the first power tube Q1 and the F end of the first logic chip J1 and is grounded through the second resistor R2, the A end and the B end of the first logic chip J1 are respectively connected to the IO2 end and the IO4 end of the first controller U1, and the gate of the fifth power tube Q5 is connected to the path switching module 5.

[0053] In a specific embodiment, the second power tube Q2 and the second power tube Q3 can both be N-channel field effect tubes, and the third power tube Q3 can be P-channel field effect tubes, wherein the second power tube Q2 and the first power tube Q1 control the energy storage work of the first energy storage capacitor CD1, and the third power tube Q3 controls the first energy storage capacitor CD1 and the first capacitor C1 to perform electric energy superposition work; the first energy storage capacitor CD1 can be a supercapacitor; the first logic chip J1 can be an AND gate chip.

[0054] Further, the path switching module 5 includes a second diode D2, a third diode D3, a second logic chip J2, a third logic chip J3, a fourth capacitor C4, a fifth capacitor C5 and a first analog switch U2;

[0055] Specifically, the anode of the second diode D2 is connected to the IN1 terminal of the first analog switch U2 and the IO2 terminal of the first controller U1, the cathode of the second diode D2 is connected to the A terminal of the second logic chip J2 and is grounded through the fourth capacitor C4, the B terminal of the second logic chip J2 is connected to the A terminal of the third logic chip J3 and the IO1 terminal of the first controller U1, the anode of the third diode D3 is connected to the IN2 terminal of the first analog switch U2 and the IO4 terminal of the first controller U1, the cathode of the third diode D3 is connected to the B terminal of the third logic chip J3 and is grounded through the capacitor, the F terminal of the second logic chip J2 is connected to the CTRL1 terminal of the first analog switch U2, the F terminal of the third logic chip J3 is connected to the CTRL2 terminal of the first analog switch U2, and the OUT2 terminal and OUT1 terminal of the first analog switch U2 are both connected to the gate of the fifth power tube Q5.

[0056] In a specific embodiment, the second logic chip J2 and the third logic chip J3 can both be AND gate chips; the first analog switch U2 can be CD4066 chip, wherein when the CTRL1 terminal of the first analog switch U2 is at a high level, the IN1 terminal and the OUT1 terminal of the first analog switch U2 are turned on, and when the CTRL2 terminal of the first analog switch U2 is at a high level, the IN2 terminal and the OUT2 terminal of the first analog switch U2 are turned on.

[0057] In an inverter field effect tube drive control circuit of the present embodiment, AC power is connected by a power interface, the first rectifier T1 and the first capacitor C1 perform rectification and filtering processing, the first resistor R1 triggers the fourth power tube Q4 to turn on, and then the processed power is transmitted to the inverter control module 2, the IO2 end, IO3 end, IO4 end and IO5 end of the first controller U1 respectively control the conduction state of the sixth power tube Q6, the seventh power tube Q7, the eighth power tube Q8 and the ninth power tube Q9, and then the inverter regulation work is performed, the inverted power is filtered by the first inductor L1, the second capacitor C2, the second inductor L2 and the third capacitor C3, and then transmitted to the power-consuming device connected to the output port, and at the same time, the sixth power tube Q6 and the ninth power tube Q9 are connected to the inverter control module 2. When conducting, the IO6 terminal of the first controller U1 controls the tenth power tube Q10 to conduct, and then the tenth power tube Q10 transmits electric energy, and then the second capacitor C2 and the third capacitor C3 are compensated to compensate for the instantaneous power, and then the low-frequency ripple of the current is suppressed. During the phase change, due to the existence of a certain time interval, the electric energy output by the inverter control module 2 is 0V. During this period, the first logic chip J1 controls the second power tube Q2 and the first power tube Q1 to conduct, and the third power tube Q3 is cut off, so that the first energy storage capacitor CD1 quickly stores the first electric energy output after rectification by the first rectifier T1. After the phase change, in order to avoid the voltage drop, the third power tube Q3 is turned on again, so that the first energy storage capacitor CD1 and the first rectifier T1 are connected. 1 output power is superimposed, the IO1 end of the first controller U1 controls the first switch tube V1 to be turned on, and the fourth power tube Q4 to be turned off. At the same time, the F end of the third logic chip J3 provides a high level for the CTRL2 end of the first analog switch U2, so that the first analog switch U2 transmits the second pulse signal output by the IO4 end of the first controller U1 to the fifth power tube Q5. The fifth power tube Q5 and the tenth power tube Q10 are connected in series and transmit the power output after the superposition of the first energy storage capacitor CD1, and cooperate with the eleventh power tube Q11 to perform power inversion. When the fifth power tube Q5, the eighth power tube Q8 and the seventh power tube Q7 are transmitting power, the IO7 end of the first controller U1 controls the eleventh power tube Q11 to be turned on, and the second power tube Q5, the eighth power tube Q8 and the seventh power tube Q7 are transmitting power. The third capacitor C3 performs electric energy compensation processing, and then suppresses the low-frequency ripple of the current. After the inverter electric energy is stable, the IO1 end of the first controller U1 stops controlling the first switch tube V1, the fourth power tube Q4 is turned on, and the fifth power tube Q5 is turned off. The inverter control module 2 continues to complete the power transmission work. Similarly, when it is necessary to switch to the conduction work of the sixth power tube Q6 and the ninth power tube Q9 again, during the phase change period, the first energy storage capacitor CD1 stores energy. After the phase change, the F end of the second logic chip J2 provides a high level for the CTRL1 end of the first analog switch U2, so that the first analog switch U2 transmits the first pulse signal output from the IO2 end of the first controller U1 to the fifth power tube Q5, and the fifth power tube Q5 is connected in series with the sixth power tube Q6.Cooperate with the ninth power tube Q9 to invert the electric energy after the first energy storage capacitor and the first rectifier T1 are superimposed, the twelfth power tube Q12 is turned on and performs electric energy transmission, and then the second capacitor C2 and the third capacitor C3 are compensated. After the electric energy is stable, the IO1 end of the first controller U1 stops controlling the first switch tube V1, the fourth power tube Q4 is turned on, the fifth power tube Q5 is turned off, and the inverter control module 2 continues to complete the electric energy transmission work, and switches back to the tenth power tube Q10 for electric energy transmission, and the second capacitor C2 and the third capacitor C3 are compensated.

[0058] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0059] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An inverter field effect tube drive control circuit, characterized in that: The inverter field effect tube drive control circuit includes: a power control module, an inverter control module, an intelligent control module, an auxiliary power module, a path switching module, an inverter regulation module and an output module; The power control module is connected to the inverter control module and the intelligent control module, and is used to receive AC power, rectify and filter the AC power and output the first power, transmit the first power to the inverter control module, and stop transmitting the first power when receiving the first control signal output by the intelligent control module; The inverter control module is connected to the intelligent control module and the auxiliary power supply module, and is used to perform inverter regulation processing on the input first electric energy and the third electric energy output by the auxiliary power supply module and output the second electric energy when receiving the first pulse signal, the second pulse signal, the third pulse signal and the fourth pulse signal output by the intelligent control module; The intelligent control module is used to output a first pulse signal, a second pulse signal, a third pulse signal and a fourth pulse signal. When the first pulse signal is output, a fifth pulse signal is output. When the second pulse signal is output, a sixth pulse signal is output. After the inverter control module completes the commutation, the first control signal is output, and when the first control signal and the first pulse signal are output, a seventh pulse signal is output. After the inverter control module stably commutates, the first control signal is stopped. The auxiliary power supply module is connected to the intelligent control module, the power control module and the path switching module, and is used to output the second control signal and receive and store the first electric energy output by the power control module when the intelligent control module does not output the first pulse signal and the second pulse signal, release the stored electric energy and perform superposition processing with the first electric energy when the second control signal is not received, output the third electric energy, and transmit the third electric energy to the inverter control module when the first pulse signal or the second pulse signal transmitted by the path switching module is received; The path switching module is connected to the intelligent control module and is used to transmit the first pulse signal to the auxiliary power module when receiving the first pulse signal and the first control signal, and transmit the second pulse signal to the auxiliary power module when receiving the second pulse signal and the first control signal; The inverter regulation module is connected to the auxiliary power module, the inverter control module and the intelligent control module, and is used to receive the second electric energy or the third electric energy and provide DC electric energy to the output module when receiving the fifth pulse signal or the sixth pulse signal; The output module is connected to the inverter regulation module and the inverter control module, and is used to filter the second electric energy, suppress the low-frequency ripple in the second electric energy when receiving the DC electric energy output by the inverter regulation module, and transmit the processed second electric energy to the connected electric device; The power control module includes a power interface, a first rectifier, a first capacitor, a first resistor, a fourth power tube, a first switch tube and a first diode; the intelligent control module includes a first controller; The first end and the second end of the power interface are connected to the first end and the second end of the first rectifier respectively, the third end of the first rectifier is connected to one end of the first capacitor and the drain of the fourth power tube and connected to the gate of the fourth power tube and the collector of the first switch tube through the first resistor, the base of the first switch tube is connected to the IO1 end of the first controller, the emitter of the first switch tube is connected to the other end of the first capacitor and the fourth end of the first rectifier, the source of the fourth power tube is connected to the anode of the first diode, and the cathode of the first diode is connected to the inverter control module; The inverter control module includes a sixth power tube, a seventh power tube, an eighth power tube and a ninth power tube; The drain of the sixth power tube is connected to the drain of the eighth power tube and the cathode of the first diode, the source of the sixth power tube is connected to the drain of the seventh power tube and the output module, the source of the eighth power tube is connected to the drain of the ninth power tube and the output module, the source of the seventh power tube is connected to the source of the ninth power tube and the fourth end of the first rectifier, and the gates of the sixth power tube, the seventh power tube, the eighth power tube and the ninth power tube are respectively connected to the IO2 end, the IO3 end, the IO4 end and the IO5 end of the first controller.

2. The inverter field effect transistor drive control circuit according to claim 1, characterized in that: The output module includes a first inductor, a second capacitor, a third inductor, a third capacitor and an output port; The first end of the output port is connected to the first end of the second capacitor and is connected to the source of the sixth power tube through the first inductor, the second end of the output port is connected to the first end of the third capacitor and is connected to the source of the eighth power tube through the second inductor, and the second end of the second capacitor is connected to the second end of the third capacitor and the inverter regulation module.

3. The inverter field effect transistor drive control circuit according to claim 2, characterized in that: The inverter regulation module includes a tenth power tube, an eleventh power tube and a twelfth power tube; The drain of the tenth power tube is connected to the drain of the eighth power tube, the source of the tenth power tube is connected to the source of the twelfth power tube, the drain of the eleventh power tube and the second end of the second capacitor, the source of the eleventh power tube is connected to the source of the ninth power tube, the drain of the twelfth power tube is connected to the auxiliary power supply module, and the gates of the tenth power tube, the eleventh power tube and the twelfth power tube are respectively connected to the IO6 terminal, the IO7 terminal and the IO8 terminal of the first controller.

4. The inverter field effect transistor drive control circuit according to claim 3, characterized in that: The auxiliary power supply module includes a second power tube, a first power tube, a third power tube, a second resistor, a fifth power tube, a first logic chip and a first energy storage capacitor; The drain of the second power tube is connected to the source of the third power tube and the third end of the first rectifier, the source of the second power tube is connected to the first end of the first energy storage capacitor, the drain of the third power tube is connected to the second end of the first energy storage capacitor and the drain of the first power tube, the source of the first power tube is connected to the fourth end of the first rectifier, the gate of the third power tube is connected to the gate of the second power tube, the gate of the first power tube and the F end of the first logic chip and is grounded through the second resistor, the A end and the B end of the first logic chip are respectively connected to the IO2 end and the IO4 end of the first controller, and the gate of the fifth power tube is connected to the path switching module.

5. The inverter field effect transistor drive control circuit according to claim 4, characterized in that: The path switching module includes a second diode, a third diode, a second logic chip, a third logic chip, a fourth capacitor, a fifth capacitor and a first analog switch; The anode of the second diode is connected to the IN1 terminal of the first analog switch and the IO2 terminal of the first controller, the cathode of the second diode is connected to the A terminal of the second logic chip and is grounded through the fourth capacitor, the B terminal of the second logic chip is connected to the A terminal of the third logic chip and the IO1 terminal of the first controller, the anode of the third diode is connected to the IN2 terminal of the first analog switch and the IO4 terminal of the first controller, the cathode of the third diode is connected to the B terminal of the third logic chip and is grounded through the capacitor, the F terminal of the second logic chip is connected to the CTRL1 terminal of the first analog switch, the F terminal of the third logic chip is connected to the CTRL2 terminal of the first analog switch, and the OUT2 terminal and OUT1 terminal of the first analog switch are both connected to the gate of the fifth power tube.

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