Vector voltage developing circuit, rectifier control method, control circuit and electronic equipment

Abstract

The invention provides a vector voltage developing circuit, a rectifier control method, a control circuit and electronic equipment, and belongs to the technical field of communication power supplies. The rectifier control circuit comprises a vector voltage developing circuit connected with a rectifier and configured to output an alternating current voltage signal of the rectifier according to an alternating current signal of the rectifier; the phase-locked loop is connected with the vector voltage developing circuit and is configured to output alternating current side voltage phase information according to the alternating current voltage signal; the modulating wave signal output unit is connected with the vector voltage developing circuit and the phase-locked loop and is configured to output a modulating wave signal according to the alternating-current voltage signal, the direct-current side reference voltage of the rectifier, the direct-current voltage signal and the alternating-current side voltage phase information; the control unit is used for receiving a modulated wave signal and outputting the modulated wave signal to the rectifier; and the control unit is connected with the modulated wave signal output unit and is configured to input the modulated wave signal to the rectifier. According to the invention, the efficient and energy-saving communication power supply system can be realized.

Description

Technical Field

[0001] This invention relates to the field of communication power supply technology, and in particular to a vector voltage imaging circuit, a rectifier control method, a control circuit, and an electronic device. Background Technology

[0002] The switching power supply module for communication equipment rooms relies on a single-phase rectifier to convert 220V AC power to 48V DC power. The single-phase rectifier is an essential component of communication equipment rooms, and its power conversion method and effectiveness play a crucial role in the operational stability of communication equipment.

[0003] In current communication power systems, single-phase rectifiers generally adopt a dual-closed-loop proportional-integral (PI) control scheme that relies on grid-side voltage sensors. This scheme has significant drawbacks in terms of energy saving and efficiency improvement: First, the voltage sensor and its associated circuits not only increase system complexity but also cause additional energy loss; second, the parameters of the PI controller are fixed, and the adjustment is slow when the load fluctuates, resulting in an increase of 5-10% in energy loss during the transition process. Summary of the Invention

[0004] This invention provides a vector voltage imaging circuit, a rectifier control method, a control circuit, and an electronic device, which can realize a highly efficient and energy-saving communication power supply system.

[0005] To solve the above-mentioned technical problems, the present invention is implemented as follows:

[0006] In a first aspect, embodiments of the present invention provide a vector voltage imaging circuit, comprising:

[0007] The first data processor is configured to process the AC current signal from the rectifier. The first feedback value is the first difference;

[0008] A first amplifier is configured to amplify the first difference and integrate the amplified second difference to obtain a second feedback value.

[0009] A second amplifier is configured to amplify the first difference to obtain a third difference;

[0010] The second data processor is configured to obtain the first feedback value based on the second feedback value, the third difference, and the error compensation value.

[0011] The third data processor is configured to process the second feedback value, the inductance value of the rectifier, and the alternating current signal. The AC voltage signal is obtained by combining the inductance of the rectifier with the internal resistance of the rectifier. .

[0012] Secondly, embodiments of the present invention provide a rectifier control circuit, including:

[0013] The vector voltage imaging circuit connected to the rectifier is configured to react according to the AC current signal of the rectifier. Output AC voltage signal of the rectifier ;

[0014] The phase-locked loop connected to the vector voltage imaging circuit is configured to operate according to the AC voltage signal. Output AC side voltage phase information;

[0015] The modulation wave signal output unit, connected to the vector voltage imaging circuit and the phase-locked loop, is configured to output a signal based on the AC voltage signal. The rectifier outputs a modulated wave signal based on the DC side reference voltage, DC voltage signal, and AC side voltage phase information, and then outputs the modulated wave signal to the control unit of the rectifier.

[0016] The control unit connected to the modulated wave signal output unit is configured to input the modulated wave signal to the rectifier.

[0017] Thirdly, embodiments of the present invention provide a rectifier control method, including:

[0018] Based on the AC current signal of the rectifier Output AC voltage signal of the rectifier ;

[0019] According to the AC voltage signal Output AC side voltage phase information;

[0020] According to the AC voltage signal The rectifier outputs a modulated wave signal consisting of the DC-side reference voltage, the DC voltage signal, and the AC-side voltage phase information.

[0021] The modulated wave signal is input to the rectifier.

[0022] Fourthly, embodiments of the present invention provide an electronic device, including: a processor, a memory, and a program stored in the memory and executable on the processor, wherein when the program is executed by the processor, it implements the steps of the rectifier control method as described in the first aspect above.

[0023] Fifthly, embodiments of the present invention provide a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of the rectifier control method described in the first aspect above.

[0024] In a sixth aspect, embodiments of the present invention provide a computer program product, including computer instructions, which, when executed by a processor, implement the steps of the rectifier control method as described in the first aspect above.

[0025] In this embodiment of the invention, an algorithm is used to implement the AC current signal of the rectifier. AC voltage signal of output rectifier By eliminating physical voltage sensors and thus avoiding the energy loss and material waste associated with them, a highly efficient and energy-saving communication power supply system can be achieved. Attached Figure Description

[0026] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0027] Figure 1 This is a schematic diagram of the composition of the vector voltage imaging circuit in an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the rectifier control circuit according to an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the rectifier control circuit according to an embodiment of the present invention;

[0030] Figure 4 This is a flowchart illustrating the rectifier control method according to an embodiment of the present invention;

[0031] Figure 5 This is a schematic diagram of the structure of an electronic device according to an embodiment of the present invention. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] The Hall voltage sensors used in existing technologies have a short lifespan, leading to frequent equipment replacements and generating a large amount of electronic waste. Furthermore, existing sensorless alternatives still fall short in energy efficiency. Sliding mode observer (SMO) schemes, due to their inherent high-frequency chattering characteristics, cause additional switching losses in the switching devices; while observation methods based on virtual flux linkages avoid the use of sensors, they require complex integration calculations and significant processor overhead, especially under light load conditions. Therefore, none of these solutions can meet the high-efficiency and energy-saving requirements of communication power systems.

[0034] This invention provides a vector voltage imaging circuit, a rectifier control method, a control circuit, and an electronic device, which can realize a highly efficient and energy-saving communication power supply system.

[0035] This invention provides a vectorial voltage imaging circuit (VEVO) 101, such as... Figure 1 As shown, it includes:

[0036] The first data processor 10 is configured to process the alternating current signal of the rectifier. The first difference e is obtained by combining the first feedback value z1;

[0037] The first amplifier 11 is configured to amplify the first difference e and integrate the amplified second difference to obtain a second feedback value z2.

[0038] The second amplifier 12 is configured to amplify the first difference e to obtain a third difference;

[0039] The second data processor 13 is configured to obtain the first feedback value z1 based on the second feedback value z2, the third difference and the error compensation value;

[0040] The third data processor 14 is configured to process the second feedback value z2, the inductance value of the rectifier, and the AC current signal. The AC voltage signal is obtained by combining the inductance of the rectifier with the internal resistance of the rectifier. .

[0041] In some embodiments, the vector voltage imaging circuit 101 further includes:

[0042] The fourth data processor is configured to multiply the DC voltage signal output by the rectifier, the modulated wave signal, and the inductance coefficient of the rectifier to obtain the error compensation value.

[0043] In some embodiments, the second data processor 13 is configured to add the second feedback value to the error compensation value, subtract the third difference to obtain an intermediate result, and perform an integral operation on the intermediate result to obtain the first feedback value.

[0044] In this embodiment, by adding the second feedback value to the error compensation value and then subtracting the third difference to obtain the first feedback value, the accuracy of the obtained first feedback value can be improved.

[0045] In some embodiments, the third data processor 14 is configured to multiply the second feedback value by the inductance value to obtain a first value, and to process the alternating current signal. Multiplying the first value by the inductor's internal resistance yields a second value; adding the first value to the second value yields the AC voltage signal. .

[0046] The technical solution in this embodiment eliminates the need to install a physical voltage sensor to obtain AC voltage signals. It can utilize alternating current signals Obtain AC voltage signal This eliminates the energy loss and material waste caused by physical voltage sensors, enabling a highly efficient and energy-saving communication power supply system.

[0047] This invention provides a rectifier control circuit 100, such as... Figure 2 and Figure 3 As shown, it includes:

[0048] The vector voltage imaging circuit 101, connected to the rectifier, is configured to detect the AC current signal from the rectifier. Output AC voltage signal of the rectifier ;

[0049] The phase-locked loop 102 connected to the vector voltage imaging circuit 101 is configured to operate according to the AC voltage signal. Output AC side voltage phase information;

[0050] The modulation wave signal output unit 103, connected to the vector voltage imaging circuit 101 and the phase-locked loop 102, is configured to output a modulation wave signal based on the AC voltage signal. The DC-side reference voltage, DC voltage signal and AC-side voltage phase information of the rectifier are output as a modulated wave signal, and the modulated wave signal is output to the control unit 104 of the rectifier.

[0051] The control unit 104, which is connected to the modulation wave signal output unit 103, is configured to input the modulation wave signal to the rectifier.

[0052] In this embodiment of the invention, an algorithm is used to implement the AC current signal of the rectifier. AC voltage signal of output rectifier By eliminating physical voltage sensors and thus avoiding the energy loss and material waste associated with them, a highly efficient and energy-saving communication power supply system can be achieved.

[0053] The rectifier control circuit of this embodiment can be applied in communication equipment rooms, reducing the power consumption of single-phase rectifiers. Through the technical solution of this embodiment, there is no need to install a physical voltage sensor to obtain the AC voltage signal. Through the cooperation of the first data processor, the first amplifier 11, the second amplifier 12, the second data processor 13, and the third data processor 14, it is possible to utilize alternating current signals. Obtain AC voltage signal This eliminates the energy loss and material waste caused by physical voltage sensors, enabling a highly efficient and energy-saving communication power supply system.

[0054] In some embodiments, the modulated wave signal output unit 103 includes:

[0055] The voltage outer loop 1031 connected to the rectifier is configured to output a current reference amplitude based on the DC-side reference voltage and the DC voltage signal output by the rectifier. The voltage outer loop 1031 employs a proportional-integral controller.

[0056] The fifth data processor 1032, connected to the voltage outer loop 1031, is configured to multiply the current reference amplitude with the AC side voltage phase information to obtain a predicted current value.

[0057] The inner current loop 1033, connected to the vector voltage imaging circuit 101 and the fifth data processor 1032, is configured to operate according to the AC voltage signal. The rectifier's sampling period, inductance value, inductance internal resistance, and predicted current value are used to output the modulation wave signal, which is then output to the rectifier's control unit 104.

[0058] In this embodiment, based on the AC voltage signal The sampling period, inductance value, inductance internal resistance, and predicted current value of the rectifier can output the modulation wave signal, so that the DSP chip 1041 can use the modulation wave signal to obtain the drive signal of the rectifier switching transistor, control the rectifier switching transistor to alternately open and close, realize the energy control of the AC side input electrical quantity, and achieve the purpose of predictive current control of single-phase TSM rectifier.

[0059] In some embodiments, the fifth data processor 1032 is configured to compare the current reference amplitude with the output value of the phase-locked loop 102. Multiply by each other to obtain the predicted current value, where, This refers to the phase of the AC side voltage.

[0060] In this embodiment, the predicted current value is obtained by using the current reference amplitude and the output value of the phase-locked loop 102, so that a modulated wave signal is output based on the predicted current value. The DSP chip 1041 uses the modulated wave signal to obtain the drive signal of the rectifier switch tube, and controls the rectifier switch tube to open and close alternately, so as to realize the energy control of the AC side input electrical quantity and achieve the purpose of predictive current control of single-phase TSM rectifier.

[0061] In some embodiments, the inner current loop 1033 is configured to obtain the modulated wave signal m according to the following formula:

[0062]

[0063] in, Where L is the sampling period, L is the inductance value, and r is the internal resistance of the inductor. This is the predicted current value at the current moment. The current alternating current signal at the current moment, The AC voltage signal at the current moment, This is a DC voltage signal. In this embodiment, it is based on an AC voltage signal. The sampling period, inductance value, inductance internal resistance, and predicted current value of the rectifier can output the modulation wave signal, so that the DSP chip 1041 can use the modulation wave signal to obtain the drive signal of the rectifier switching transistor, control the rectifier switching transistor to alternately open and close, realize the energy control of the AC side input electrical quantity, and achieve the purpose of predictive current control of single-phase TSM rectifier.

[0064] The specific structure of the rectifier control circuit in this embodiment of the invention can be as shown in Figure 3, and the vector voltage development circuit 101 can be adopted as shown in Figure 3. Figure 1 and Figure 3 The portion within the red box is implemented. This embodiment of the invention also provides a rectifier control method, applied to the rectifier control circuit described above, such as... Figure 4 As shown, it includes:

[0065] Step S1: Based on the AC current signal of the rectifier Output AC voltage signal of the rectifier ;

[0066] Step S2: Based on the AC voltage signal Output AC side voltage phase information;

[0067] Step S3: Based on the AC voltage signal The rectifier outputs a modulated wave signal consisting of the DC-side reference voltage, the DC voltage signal, and the AC-side voltage phase information.

[0068] Step S4: Input the modulated wave signal into the rectifier.

[0069] In this embodiment of the invention, an algorithm is used to implement the AC current signal of the rectifier. AC voltage signal of output rectifier By eliminating physical voltage sensors and thus avoiding the energy loss and material waste associated with them, a highly efficient and energy-saving communication power supply system can be achieved.

[0070] This embodiment, by employing a vector voltage development structure, can eliminate the need for a physical voltage sensor, thereby eliminating the energy loss and material waste it causes. Furthermore, the vector voltage development structure can completely avoid the chattering phenomenon of traditional observers.

[0071] This invention replaces physical modules with software algorithms, reducing the cost of rectifier modules and improving the accuracy of voltage acquisition while reducing grid-side voltage distortion (THD) of the rectifier module's grid-side voltage. This invention uses a full-bridge rectifier topology as the conduction model, and the control circuit includes the following physical modules: VEVO voltage estimation, outer voltage loop 1031, inner current loop 1033, and phase-locked loop 102.

[0072] The input parameters of the control circuit include: the rectifier's system parameters and inductance value. Inductor internal resistance The AC input current is sampled through a current sensor. Sampling time and the sampled value of the DC-side output voltage obtained by the voltage sensor. .

[0073] This embodiment eliminates the need for physical components that acquire AC side voltage signals via voltage sensors, improving the overall control algorithm's flexibility and response speed. When the output parameter is a modulated wave signal... The modulated wave signal is input to the enhanced pulse width modulation (ePWM) module in the digital signal processor (DSP) control chip, which outputs a switching signal to control the single-phase time-surface modulation (TSM) rectifier. The control flow in this embodiment includes the following steps:

[0074] 1. Real-time acquisition of grid-side AC current signals The calculated feedback value The difference is calculated by subtracting the first feedback value mentioned above. (i.e., the first difference mentioned above), defined as the error value. Meanwhile, VEVO voltage estimation compensates for nonlinear systems by real-time tracking and monitoring of internal and external disturbances, linearizing the system, and selecting... The function is the tracking error of the system state variables. :

[0075]

[0076] in, The range of variation is (0,1), and its magnitude is inversely proportional to the speed of the observer's tracking and directly proportional to the filtering effect. The specific value is selected according to actual needs. It is a constant, and its magnitude is proportional to the filtering effect.

[0077] 2. Set the error value pass The gain is amplified by a factor of 1, and then the amplified error value (i.e., the second difference mentioned above) is integrated using conventional methods. The resulting value is defined as... (i.e., the second feedback value);

[0078] 3. Set the error value pass A gain of 10 times is used to amplify the third difference;

[0079] 4. The DC voltage signal acquired in real time using voltage sensor 20 With modulated wave signal Inductance coefficient Multiply by the product, calculate the compensation value, and the resulting value is the error compensation value in voltage estimation. Here, the modulation signal is defined. , For the switching function of a single-phase TSM rectifier;

[0080] 5. Convert the output value from step 2. Add the error compensation value output in step 4, and then subtract the value obtained in step 3. The error amplification value is multiplied by a factor of 1, and the calculated value is then integrated to obtain the final result. , This is the key value for calculating the error value in step 1;

[0081] 6. Reconstruct the voltage using the values ​​obtained from the above calculations, and use the values ​​obtained in step 2... Value through inductance value The gain amplification operation is multiplied by 10 times, and then combined with the inductor's internal resistance. Real-time current signal Add them together to obtain the AC side voltage signal. As shown in the formula below:

[0082]

[0083] Among them, AC side voltage signal The input signals are for the inner current loop 1033 and the phase-locked loop 102.

[0084] The voltage outer loop 1031 uses a proportional-integral controller, with the input being the DC-side reference voltage. Compared with the actual collected DC voltage signal The output is the current reference amplitude. , The value is a component of the magnitude of the predicted current value;

[0085] 8. The phase-locked loop 102 adopts a synchronous rotating transformation coordinate system phase-locked loop 102 based on a second-order generalized integrator. The control loop of the phase-locked loop 102 consists of three parts: a phase detector, a loop filter, and a voltage-controlled oscillator. The output is fed back to the input. After the loop is adjusted, the angular frequency of the output is equal to that of the input, so that the phase difference between the input signal and the output signal is constant, and the loop achieves a phase-locked state.

[0086] The transfer function of the second-order generalized integrator of the phase-locked loop 102 can be expressed by the following formula. Finally, the output value of the phase-locked loop 102 includes the phase of the AC side voltage. The value of information This value is a phase component of the predicted current value:

[0087]

[0088] AC side voltage signal After passing through a second-order generalized integrator, the generated Virtual orthogonal components of axes , Virtual orthogonal components of axes Then transform it into coordinates. , Finally, use Phase-locked loop 102 can achieve phase locking by synchronously rotating the coordinate system of the voltage, ensuring that the phase is consistent with the AC side voltage. The output value of phase-locked loop 102 includes the phase of the AC side voltage. The value of information This value is a phase component of the predicted current value.

[0089] 9. Set the output value of the voltage outer loop 1031. With the output value of phase-locked loop 102 Multiply by the product to obtain the real-time predicted current value. The input is modulated into the inner current loop 1033. Operations:

[0090]

[0091] 10. Current inner loop 1033 utilizes sampling period Inductance value Inductor internal resistance AC side voltage signal Predicted current value Predictive current control based on the mathematical model of a single-phase TSM rectifier is performed. By performing forward Euler discretization on the rectifier mathematical model, the discrete circuit equation of the single-phase TSM rectifier can be obtained as follows:

[0092]

[0093] in The predicted current value at the next moment. This is the value of the current TSM modulated wave. , , The sampled value at the current moment, i.e., the known quantity; Given the known parameters of the system's mathematical model, the optimal modulation objective of the 1033 current inner loop is the output modulation wave value. After controlling the rectifier, the output current value obtained in the next sampling cycle is equal to the predicted current value, that is... .

[0094] To achieve For the purpose of control, the expression of the discrete current equation can be simplified to the following formula, from which the real-time modulated wave signal can be obtained. Inner loop current output representation:

[0095]

[0096] modulated wave signal value The input is given to the DSP chip 1041, and the ePWM module in the DSP chip 1041 can modulate the waveform signal. Compared with the built-in carrier, the four switching transistors of the rectifier are obtained. The drive signal is input to the driver chip 1042, which then controls the switching transistor of the rectifier. The control signals for the rectifier's four switching transistors. Alternating disconnection and closure enables energy control of the input electrical quantities on the AC side, achieving the purpose of predictive current control of the single-phase TSM rectifier based on VEVO voltage reconstruction, and enabling the rectifier to output the predicted current value in the next sampling cycle.

[0097] At this point, the rectifier's output voltage can also meet the requirements, namely the DC side reference voltage. Equal to the actual DC voltage collected .

[0098] Existing technologies based on sliding mode observers suffer from significant switching losses and deterioration of AC current harmonics due to inherent high-frequency chattering characteristics, severely impacting network quality. Meanwhile, schemes relying on virtual flux linkages experience a sharp drop in efficiency during dynamic processes due to energy losses from integration operations. While the principle of voltage reconstruction using virtual flux linkage observers based on first- and second-order low-pass filters can address large initial voltage fluctuations and control instability with bandpass filters, analysis shows it remains difficult to simultaneously resolve the issues of response speed and phase shift. To address this, this embodiment proposes a VEVO-based network-side voltage estimation strategy. A VEVO is designed using the mathematical model of a single-phase TSM rectifier to achieve rapid network-side voltage response and minimal phase shift in voltage estimation, which is then integrated with a predictive current control algorithm for closed-loop operation. This embodiment is suitable for applications requiring robust power supply and strong anti-interference capabilities in communication equipment rooms, improving adaptability to network fluctuations and poor network quality, as well as enhancing response speed. This embodiment eliminates the voltage sensor module, reducing the investment cost of communication equipment room construction, lowering the amount of electricity used, and improving the efficiency of electricity use, which is in line with the concept of green equipment rooms and energy conservation and emission reduction.

[0099] This embodiment completely eliminates the voltage sensor and its isolation circuit, thus eliminating the energy loss and material waste they cause. This not only reduces system costs but also directly eliminates the energy loss caused by the sensor. Secondly, the VEVO algorithm has low computational complexity, significantly reducing the controller's operating power consumption. It can shorten the system's dynamic response time to less than 0.5ms, greatly reducing energy loss during load changes. Under typical operating conditions, the overall efficiency can be increased to over 97%, with annual power savings of up to 1500kWh per unit.

[0100] The vector voltage imaging structure in this embodiment completely avoids the chattering phenomenon of traditional observers, while controlling the current harmonic content to an optimal level. The non-integral computing architecture not only saves 15% of computational energy consumption but also ensures efficient and stable operation of the system under all operating conditions. The sensorless design eliminates the 0.8-1.2% energy loss caused by traditional Hall voltage sensors, enabling the rectifier module efficiency to exceed 97.2%. The innovative VEVO control algorithm avoids high-frequency chattering of switching devices, reducing switching losses by 35% and effectively reducing equipment heat generation and heat dissipation energy consumption. The dynamic response time is shortened to 0.5ms, significantly improving energy utilization during load changes.

[0101] Please refer to Figure 5The present invention also provides an electronic device 200, including a processor 201, a memory 202, and a computer program stored in the memory 202 and executable on the processor 201. When the computer program is executed by the processor 201, it implements the various processes of the above-described rectifier control method embodiments and achieves the same technical effects. To avoid repetition, it will not be described again here.

[0102] This invention also provides a computer-readable storage medium storing a computer program. When executed by a processor, the computer program implements the various processes of the above-described rectifier control method embodiments and achieves the same technical effects. To avoid repetition, it will not be described again here. The computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, etc.

[0103] This application also provides a computer program product, including computer instructions, which, when executed by a processor, implement the above-described... Figure 4 The various processes of the method embodiments shown can achieve the same technical effect, and will not be described again here to avoid repetition.

[0104] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0105] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0106] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of the present invention.

Claims

1. A vector voltage imaging circuit, characterized in that, include: The first data processor is configured to process the AC current signal from the rectifier. The first feedback value is the first difference; A first amplifier is configured to amplify the first difference and integrate the amplified second difference to obtain a second feedback value. A second amplifier is configured to amplify the first difference to obtain a third difference; The second data processor is configured to obtain the first feedback value based on the second feedback value, the third difference, and the error compensation value. The third data processor is configured to process the second feedback value, the inductance value of the rectifier, and the alternating current signal. The AC voltage signal is obtained by combining the inductance of the rectifier with the internal resistance of the rectifier. .

2. The vector voltage imaging circuit according to claim 1, characterized in that, The vector voltage imaging circuit further includes: The fourth data processor is configured to multiply the DC voltage signal output by the rectifier, the modulated wave signal, and the inductance coefficient of the rectifier to obtain the error compensation value.

3. The vector voltage imaging circuit according to claim 2, characterized in that, The second data processor is configured to add the second feedback value to the error compensation value, then subtract the third difference value to obtain an intermediate result, and perform an integral operation on the intermediate result to obtain the first feedback value.

4. The vector voltage imaging circuit according to claim 2, characterized in that, The third data processor is configured to multiply the second feedback value by the inductance value to obtain a first value, and then convert the AC current signal... Multiplying the first value by the inductor's internal resistance yields a second value; adding the first value to the second value yields the AC voltage signal. .

5. A rectifier control circuit, characterized in that, include: The vector voltage imaging circuit, as described in any one of claims 1-4, connected to the rectifier, is configured to react according to the AC current signal of the rectifier. Output AC voltage signal of the rectifier ; The phase-locked loop connected to the vector voltage imaging circuit is configured to operate according to the AC voltage signal. Output AC side voltage phase information; The modulation wave signal output unit, connected to the vector voltage imaging circuit and the phase-locked loop, is configured to output a signal based on the AC voltage signal. The rectifier outputs a modulated wave signal based on the DC side reference voltage, DC voltage signal, and AC side voltage phase information, and then outputs the modulated wave signal to the control unit of the rectifier. The control unit connected to the modulated wave signal output unit is configured to input the modulated wave signal to the rectifier.

6. The rectifier control circuit according to claim 5, characterized in that, The modulated wave signal output unit includes: The voltage outer loop connected to the rectifier is configured to output a current reference amplitude based on the DC-side reference voltage and the DC voltage signal output by the rectifier; A fifth data processor connected to the voltage outer loop is configured to multiply the current reference amplitude with the AC side voltage phase information to obtain a predicted current value; The inner current loop connected to the vector voltage imaging circuit and the fifth data processor is configured to operate according to the AC voltage signal. The rectifier's sampling period, inductance value, inductance internal resistance, and predicted current value are used to output the modulated wave signal, which is then output to the rectifier's control unit.

7. The rectifier control circuit according to claim 6, characterized in that, The voltage outer loop uses a proportional-integral controller.

8. The rectifier control circuit according to claim 6, characterized in that, The fifth data processor is configured to compare the current reference amplitude with the output value of the phase-locked loop. Multiply by each other to obtain the predicted current value, where, This refers to the phase of the AC side voltage.

9. The rectifier control circuit according to claim 6, characterized in that, The inner current loop is configured to obtain the modulated wave signal m according to the following formula: in, Where L is the sampling period, L is the inductance value, and r is the internal resistance of the inductor. This is the predicted current value at the current moment. The current AC current signal at the current moment, The AC voltage signal at the current moment, It is a DC voltage signal.

10. A rectifier control method, characterized in that, The rectifier control circuit applied to any one of claims 5-9 includes: Based on the AC current signal of the rectifier Output AC voltage signal of the rectifier ; According to the AC voltage signal Output AC side voltage phase information; According to the AC voltage signal The rectifier outputs a modulated wave signal consisting of the DC-side reference voltage, the DC voltage signal, and the AC-side voltage phase information. The modulated wave signal is input to the rectifier.

11. An electronic device, characterized in that, include: A processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the steps of the rectifier control method as claimed in claim 10.

12. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the rectifier control method as described in claim 10.

13. A computer program product, characterized in that, It includes computer instructions that, when executed by a processor, implement the steps of the rectifier control method as described in claim 10.

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