Method and system for controlling three-phase staggered oblique positive circuit of switching power supply

Abstract

The invention relates to the technical field of switching power supply control, in particular to a switching power supply three-phase staggered oblique positive circuit control method and a switching power supply three-phase staggered oblique positive circuit control system. Establishing a circuit mathematical model of the switching power supply based on the switching power supply circuit element information, wherein the circuit mathematical model comprises a state equation and an output equation; switching power supply state data are obtained, the switching power supply state data are input into the circuit data model, and power supply output analog data are obtained; generating a switching power supply optimization control instruction based on the power supply output analog data, obtaining controller optimization parameters in response to the switching power supply optimization control instruction, adjusting parameters of a switching power supply controller according to the controller optimization parameters, and obtaining a control signal based on the adjusted parameters of the switching power supply controller; and obtaining harmonic data according to the controller optimization parameter, generating a harmonic compensation signal based on the harmonic data, superposing the harmonic compensation signal into a control signal, and performing control response on the switching power supply based on the superposed control signal. According to the invention, the dynamic response speed of the three-phase staggered oblique positive circuit is improved, the stability of the circuit is enhanced, and harmonic components in the circuit are effectively suppressed, so that the overall performance of the switching power supply is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of switching power supply control, and in particular to a switching power supply three-phase interleaved slant circuit control method and system. Background Art

[0002] As a key device for power conversion, switching power supplies are widely used in various electronic devices. As an important topology of switching power supplies, the three-phase interleaved slew-sine circuit has the advantages of high efficiency and low ripple, and is a hot topic in current research. However, the existing three-phase interleaved slew-sine circuit control method still needs to be improved in terms of dynamic response, stability and harmonic suppression.

[0003] Traditional three-phase interleaved slew circuits usually use methods such as PID control or fuzzy control to achieve stable output of the circuit. Although these methods can meet the needs to a certain extent, they have limitations in fast dynamic response and high-precision control.

[0004] The existing control methods have a slow dynamic response when dealing with power input changes or load mutations, which may cause output voltage fluctuations and affect the stability and reliability of the power supply. At the same time, the effect of harmonic suppression is not satisfactory, which may affect the quality and life of the power supply. Therefore, there is room for improvement. Summary of the invention

[0005] In order to improve the dynamic response speed of a three-phase interleaved oblique circuit, enhance the stability of the circuit, and effectively suppress the harmonic components in the circuit, thereby improving the overall performance of the switching power supply, the present application provides a switching power supply three-phase interleaved oblique circuit control method and system.

[0006] The above-mentioned invention objective of the present application is achieved through the following technical solutions: A switching power supply three-phase interleaved slant circuit control method is applied to a switching power supply controller, and the switching power supply three-phase interleaved slant circuit control method comprises the following steps: Acquire switching power supply circuit element information, and establish a circuit mathematical model of the switching power supply based on the switching power supply circuit element information, wherein the circuit mathematical model includes a state equation and an output equation; Acquire switch power supply state data, input the switch power supply state data into the circuit data model, and acquire power supply output simulation data; Generate a switching power supply optimization control instruction based on the power supply output simulation data, obtain controller optimization parameters in response to the switching power supply optimization control instruction, adjust the parameters of the switching power supply controller according to the controller optimization parameters, and obtain a control signal based on the adjusted parameters of the switching power supply controller; Harmonic data is acquired according to the controller optimization parameters, a harmonic compensation signal is generated based on the harmonic data, the harmonic compensation signal is superimposed on the control signal, and a control response is performed on the switching power supply based on the superimposed control signal.

[0007] By adopting the above technical solution, during the operation of the switching power supply, the controller in the switching power supply will control the operation of the switching power supply and obtain the circuit element information of the switching power supply. The switching power supply circuit element information refers to the information of each electronic device constituting the switching power supply circuit, such as resistance, inductance and capacitance, and the corresponding values. A circuit mathematical model of the switching power supply is established using the switching power supply circuit element information. The circuit mathematical model includes a state equation and an output equation. During the operation of the switching power supply, the state data of the switching power supply is obtained in real time. The state data of the switching power supply refers to the input voltage, current and other data when the switching power supply is working. The state data of the switching power supply is input into the constructed circuit mathematical model to obtain the power supply output simulation data. The power supply output simulation data refers to the prediction of future output data based on the real-time state of the circuit, so that the controller can predict the state of the switching power supply circuit in the future period of time at each sampling moment of the switching power supply. The power supply output simulation data is analyzed to generate the corresponding switching power supply optimization control instructions, and the switching power supply optimization control instructions are responded to to obtain the controller optimization parameters. The controller optimization parameters refer to the specific parameters for optimizing and adjusting the controller parameters. The controller parameters are adjusted according to the controller optimization parameters, such as gain, integration time, etc. After the controller parameters are adjusted, the corresponding control signal for the switching power supply is generated to accelerate the dynamic response speed of the switching power supply. At the same time, the harmonic data is extracted from the controller optimization parameters. The harmonic data refers to the harmonic data of the switching power supply circuit. The harmonic compensation signal is generated according to the harmonic data analysis, and the harmonic compensation signal is superimposed on the control signal. The switching power supply is controlled and responded based on the superimposed control signal to offset the harmonic components in the circuit, improve the dynamic response speed of the three-phase interleaved oblique circuit, enhance the stability of the circuit, and effectively suppress the harmonic components in the circuit, thereby improving the overall performance of the switching power supply.

[0008] In a preferred example, the present application may be further configured as follows: the switching power supply circuit element information is obtained, and a circuit mathematical model of the switching power supply is established based on the switching power supply circuit element information, wherein the circuit mathematical model includes a state equation and an output equation, specifically including: Acquire inductance data and capacitance data of each phase based on the switching power supply circuit element information; The inductance data and the capacitance data are used as variables to construct a circuit mathematical model of the switching power supply.

[0009] By adopting the above technical solution, when constructing the circuit mathematical model of the switching power supply, the inductance data and capacitance data of each phase are extracted through the circuit element information of the switching power supply. The inductance data refers to the specific value of the inductance of each phase, and the capacitance data refers to the specific value of the capacitance in the three-phase staggered oblique circuit of the switching power supply. The obtained inductance data and capacitance data are used as variables, and the state equation and output equation of the switching power supply are listed based on Kirchhoff's voltage law (KVL) and Kirchhoff's current law (KCL). The state equation and the output equation are combined to form the circuit mathematical model of the switching power supply, so as to intuitively analyze the overall performance of the switching power supply and provide the controller with accurate future state data of the switching power supply.

[0010] In a preferred example, the present application may be further configured as follows: the step of obtaining the switch power supply state data, inputting the switch power supply state data into the circuit data model, and obtaining the power supply output simulation data specifically includes: Acquire the switch state and input voltage of each phase based on the switch power supply state data; The switch state and input voltage of each phase are input into the circuit digital model to obtain power supply output analog data.

[0011] By adopting the above technical scheme, the switching power supply status data in the three-phase interleaved oblique circuit of the switching power supply is obtained through sensors, measuring equipment or the control system of the switching power supply, and the input voltage of the switching power supply and the switching state of each phase are obtained from the switching power supply status data. The switching state and input voltage of each phase are input into the digital model of the circuit, and the state equation and output equation in the digital model of the circuit are solved using the switching state and input voltage of each phase to obtain the power supply output simulation data to evaluate the performance of the switching power supply.

[0012] In a preferred example, the present application can be further configured as follows: generating a switching power supply optimization control instruction based on the power supply output simulation data, obtaining a controller optimization parameter in response to the switching power supply optimization control instruction, adjusting the parameters of the switching power supply controller according to the controller optimization parameters, and obtaining a control signal based on the adjusted parameters of the switching power supply controller, specifically including: Inputting the power supply output simulation data into a preset data analysis model, obtaining switch power supply mutation data, and generating a switch power supply optimization control instruction based on the switch power supply mutation data; In response to the switching power supply optimization control instruction, controller optimization parameters are obtained, the controller optimization parameters are input into the controller of the switching power supply, and the parameters of the switching power supply controller are adjusted.

[0013] By adopting the above technical scheme, the power supply output simulation data is analyzed, the power supply output simulation data is input into a preset data analysis model, and the switching power supply mutation data is extracted from the power supply output simulation data using the data analysis model. The switching power supply mutation data refers to the variation data of the switching power supply output caused by the power supply input change or the load mutation. The corresponding switching power supply optimization control instructions are generated according to the switching power supply mutation data, and the corresponding controller optimization parameters are obtained in response to the switching power supply optimization control instructions. The current parameters of the controller of the switching power supply are adjusted according to the controller optimization parameters, so that when the power supply input changes or the load mutates, the switching power supply can respond quickly to the mutation situation, thereby improving the dynamic response speed of the three-phase staggered oblique circuit of the switching power supply.

[0014] In a preferred example, the present application may be further configured as follows: the power supply output simulation data is input into a preset data analysis model to obtain the switching power supply mutation data, specifically including: Performing enhanced filtering processing on the power supply output analog data to obtain processed power supply output analog data; The processed power supply output simulation data is input into a preset data analysis model to extract data jump point information, and the data jump point information is integrated to form switching power supply mutation data.

[0015] By adopting the above technical scheme, in the process of analyzing the switching power supply output analog data, the switching power supply output analog data is enhanced and filtered to improve the accuracy of the switching power supply output analog data, thereby improving the accuracy of the extraction of the switching power supply mutation data, which is beneficial to the accuracy of the response control of the switching power supply. The processed power supply output analog data is input into a preset data analysis model, the data jump points in the data are extracted, the starting time point and the receiving time point of the data jump point are obtained, all the data jump point information is integrated to form the switching power supply mutation data, and the function of the sudden change in the working state of the switching power supply is quickly analyzed.

[0016] In a preferred example, the present application may be further configured as follows: generating a harmonic compensation signal based on the harmonic data, superimposing the harmonic compensation signal on the control signal, and controlling the switching power supply based on the superimposed control signal, specifically including: Inputting the harmonic data into a preset harmonic analysis model to obtain harmonic components and harmonic frequencies; A harmonic compensation signal is adaptively generated based on the harmonic components and harmonic frequencies, the harmonic compensation signal is superimposed on the control signal, and a control response is performed on the switching power supply based on the superimposed control signal.

[0017] By adopting the above technical solution, by analyzing the harmonic data and using the harmonic analysis model to analyze the harmonic data, the harmonic components and harmonic frequencies can be obtained, so that the harmonic frequencies and amplitudes that need to be compensated can be determined more accurately, and the harmonic compensation signals can be adaptively generated according to the harmonic components and harmonic frequencies. The parameters of the harmonic compensation signals can be dynamically adjusted according to the real-time harmonic analysis results to ensure more effective harmonic suppression, and the generated harmonic compensation signals are superimposed on the original control signals. The superimposed control signals are sent to the control circuit of the switching power supply, and the adjustment of the control signals should ensure that the switching power supply can operate according to the expected waveform and performance while reducing the impact of harmonics.

[0018] In a preferred example, the present application may be further configured as follows: the adaptive generation of the harmonic compensation signal based on the harmonic components and the harmonic frequency specifically includes: Mapping the harmonic components and harmonic frequencies to a thread pool for harmonic compensation mode adaptation; The harmonic compensation mode with the best adaptability is selected, and a harmonic compensation signal is generated based on the harmonic components and harmonic frequencies.

[0019] By adopting the above technical solution, the harmonic components and harmonic frequencies are mapped to the thread pool for harmonic compensation mode adaptation. The thread pool contains multiple working threads for processing different harmonic compensation mode adaptation tasks in parallel. After receiving the harmonic data subset, each thread will try multiple harmonic compensation modes and evaluate the degree of adaptation of each mode to harmonic suppression. According to the preset evaluation criteria (such as minimum harmonic residual, maximum efficiency improvement, etc.), the harmonic compensation mode with the best adaptation degree is selected. Based on the selected optimal harmonic compensation mode, as well as the original harmonic components and harmonic frequency data, the corresponding harmonic compensation signal is generated. The parameters of the compensation signal (such as amplitude, phase, frequency, etc.) should be determined according to the optimal compensation mode to ensure that the harmonics can be effectively suppressed.

[0020] The second object of the invention is achieved by the following technical solutions: A switching power supply three-phase interleaved slant circuit control system, the switching power supply three-phase interleaved slant circuit control system comprising: A mathematical model building module, used to obtain switching power supply circuit element information, and to build a circuit mathematical model of the switching power supply based on the switching power supply circuit element information, wherein the circuit mathematical model includes a state equation and an output equation; A switching power supply output simulation module, used to obtain switching power supply state data, input the switching power supply state data into the circuit data model, and obtain power supply output simulation data; a switching power supply control optimization module, configured to generate a switching power supply optimization control instruction based on the power supply output simulation data, obtain controller optimization parameters in response to the switching power supply optimization control instruction, adjust parameters of the switching power supply controller according to the controller optimization parameters, and obtain a control signal based on the adjusted parameters of the switching power supply controller; A harmonic compensation module is used to obtain harmonic data according to the controller optimization parameters, generate a harmonic compensation signal based on the harmonic data, superimpose the harmonic compensation signal on the control signal, and control the switching power supply based on the superimposed control signal.

[0021] By adopting the above technical solution, during the operation of the switching power supply, the controller in the switching power supply will control the operation of the switching power supply and obtain the circuit element information of the switching power supply. The switching power supply circuit element information refers to the information of each electronic device constituting the switching power supply circuit, such as resistance, inductance and capacitance, and the corresponding values. A circuit mathematical model of the switching power supply is established using the switching power supply circuit element information. The circuit mathematical model includes a state equation and an output equation. During the operation of the switching power supply, the state data of the switching power supply is obtained in real time. The state data of the switching power supply refers to the input voltage, current and other data when the switching power supply is working. The state data of the switching power supply is input into the constructed circuit mathematical model to obtain the power supply output simulation data. The power supply output simulation data refers to the prediction of future output data based on the real-time state of the circuit, so that the controller can predict the state of the switching power supply circuit in the future period of time at each sampling moment of the switching power supply. The power supply output simulation data is analyzed to generate the corresponding switching power supply optimization control instructions, and the switching power supply optimization control instructions are responded to to obtain the controller optimization parameters. The controller optimization parameters refer to the specific parameters for optimizing and adjusting the controller parameters. The controller parameters are adjusted according to the controller optimization parameters, such as gain, integration time, etc. After the controller parameters are adjusted, the corresponding control signal for the switching power supply is generated to accelerate the dynamic response speed of the switching power supply. At the same time, the harmonic data is extracted from the controller optimization parameters. The harmonic data refers to the harmonic data of the switching power supply circuit. The harmonic compensation signal is generated according to the harmonic data analysis, and the harmonic compensation signal is superimposed on the control signal. The switching power supply is controlled and responded based on the superimposed control signal to offset the harmonic components in the circuit, improve the dynamic response speed of the three-phase interleaved oblique circuit, enhance the stability of the circuit, and effectively suppress the harmonic components in the circuit, thereby improving the overall performance of the switching power supply.

[0022] The third objective of the present application is achieved through the following technical solutions: A computer device comprises a memory, a processor and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the above-mentioned method for controlling a three-phase interleaved slant circuit of a switching power supply are implemented.

[0023] The fourth objective of the present application is achieved through the following technical solutions: A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the above-mentioned switching power supply three-phase interleaved slant circuit control method.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. During the operation of the switching power supply, the controller in the switching power supply will control the operation of the switching power supply and obtain the circuit component information of the switching power supply. The switching power supply circuit component information refers to the information of each electronic device that constitutes the switching power supply circuit, such as resistance, inductance and capacitance, and the corresponding values. A circuit mathematical model of the switching power supply is established using the switching power supply circuit component information. The circuit mathematical model includes a state equation and an output equation. During the operation of the switching power supply, the switching power supply state data is obtained in real time. The switching power supply state data refers to the input voltage, current and other data when the switching power supply is working. The switching power supply state data is input into the constructed circuit mathematical model to obtain the power supply output simulation data. The power supply output simulation data refers to the prediction of future output data based on the real-time state of the circuit, so that the controller can predict the state of the switching power supply circuit in the future at each sampling moment of the switching power supply, and adjust the power supply output. Analyze the analog data, generate the corresponding switching power supply optimization control instructions, respond to the switching power supply optimization control instructions, and obtain the controller optimization parameters. The controller optimization parameters refer to the specific parameters for optimizing and adjusting the controller parameters. According to the controller optimization parameters, adjust the controller parameters, such as gain, integration time, etc. After adjusting the controller parameters, generate the corresponding control signal for the switching power supply to speed up the dynamic response speed of the switching power supply. At the same time, extract the harmonic data from the controller optimization parameters. The harmonic data refers to the harmonic data of the switching power supply circuit. Generate a harmonic compensation signal based on the harmonic data analysis, superimpose the harmonic compensation signal on the control signal, and control the switching power supply based on the superimposed control signal to offset the harmonic components in the circuit, improve the dynamic response speed of the three-phase interleaved oblique circuit, enhance the stability of the circuit, and effectively suppress the harmonic components in the circuit, thereby improving the overall performance of the switching power supply; 2. When constructing the circuit mathematical model of the switching power supply, the inductance data and capacitance data of each phase are extracted through the circuit element information of the switching power supply. The inductance data refers to the specific value of the inductance of each phase, and the capacitance data refers to the specific value in the three-phase staggered oblique circuit of the switching power supply. The obtained inductance data and capacitance data are used as variables, and the state equation and output equation of the switching power supply are listed based on Kirchhoff's voltage law (KVL) and Kirchhoff's current law (KCL). The state equation and the output equation are combined to form the circuit mathematical model of the switching power supply, so as to intuitively analyze the overall performance of the switching power supply and provide the controller with accurate future state data of the switching power supply; 3. Obtain the switching power supply state data in the three-phase interleaved oblique positive circuit of the switching power supply through sensors, measuring equipment or the control system of the switching power supply, obtain the input voltage of the switching power supply and the switching state of each phase from the switching power supply state data, input the obtained switching state and input voltage of each phase into the circuit digital model, solve the state equation and output equation in the circuit digital model using the switching state and input voltage of each phase, obtain the power supply output simulation data, and evaluate the performance of the switching power supply; 4. By analyzing the harmonic data and using the harmonic analysis model to analyze the harmonic data, the harmonic components and harmonic frequencies can be obtained, so that the harmonic frequencies and amplitudes that need to be compensated can be determined more accurately. The harmonic compensation signal is adaptively generated according to the harmonic components and harmonic frequencies. The parameters of the harmonic compensation signal are dynamically adjusted according to the real-time harmonic analysis results to ensure more effective harmonic suppression. The generated harmonic compensation signal is superimposed on the original control signal. The superimposed control signal is sent to the control circuit of the switching power supply. The adjustment of the control signal should ensure that the switching power supply can operate according to the expected waveform and performance while reducing the impact of harmonics. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a flow chart of a method for controlling a three-phase interleaved slant circuit of a switching power supply in one embodiment of the present application; Figure 2 It is a flowchart for implementing step S10 in a method for controlling a three-phase interleaved slant circuit of a switching power supply in one embodiment of the present application; Figure 3 It is a flowchart for implementing step S20 in a method for controlling a three-phase interleaved slant circuit of a switching power supply in one embodiment of the present application; Figure 4 It is a flowchart for implementing step S30 in a method for controlling a three-phase interleaved slant circuit of a switching power supply in one embodiment of the present application; Figure 5 It is a flowchart for implementing step S31 in a method for controlling a three-phase interleaved slant circuit of a switching power supply in one embodiment of the present application; Figure 6 It is a flowchart for implementing step S40 in a method for controlling a three-phase interleaved slant circuit of a switching power supply in one embodiment of the present application; Figure 7 This is a flowchart of the implementation of step S42 in a three-phase interleaved slant circuit control method of a switching power supply in an embodiment of the present application. Figure 8 This is a principle block diagram of a three-phase interleaved oblique positive circuit control system of a switching power supply in one embodiment of the present application; Fig. 9 It is a schematic diagram of a computer device in one embodiment of the present application. DETAILED DESCRIPTION

[0026] The present application is further described in detail below in conjunction with the accompanying drawings.

[0027] In one embodiment, if Figure 1 As shown, the present application discloses a three-phase staggered slant circuit control method for a switching power supply, which specifically includes the following steps: S10: Acquire switching power supply circuit element information, and establish a circuit mathematical model of the switching power supply based on the switching power supply circuit element information, wherein the circuit mathematical model includes a state equation and an output equation.

[0028] In this embodiment, the switching power supply circuit component information refers to information of various electronic devices constituting the switching power supply circuit, such as resistance, inductance and capacitance, and corresponding values.

[0029] Specifically, during the operation of the switching power supply, the controller in the switching power supply will control the operation of the switching power supply and obtain information about each electronic component constituting the switching power supply circuit, such as resistance, inductance and capacitance, and corresponding values.

[0030] Furthermore, a circuit mathematical model of a switching power supply is established using the switching power supply circuit element information, and the circuit mathematical model includes a state equation and an output equation.

[0031] S20: Acquire switch power supply state data, input the switch power supply state data into the circuit data model, and acquire power supply output simulation data.

[0032] In this embodiment, the switching power supply state data refers to data such as input voltage and current when the switching power supply is working, and the power supply output simulation data refers to the future output data predicted according to the real-time state of the circuit.

[0033] Specifically, during the operation of the switching power supply, the input voltage, current and other data of the switching power supply are obtained in real time, and the input voltage, current and other data of the switching power supply are input into the constructed circuit mathematical model to obtain the output data predicted in the future according to the real-time state of the circuit, so that the controller can predict the state of the switching power supply circuit in the future period of time at each sampling moment of the switching power supply.

[0034] S30: generating a switching power supply optimization control instruction based on the power supply output simulation data, acquiring controller optimization parameters in response to the switching power supply optimization control instruction, adjusting parameters of the switching power supply controller according to the controller optimization parameters, and acquiring a control signal based on the adjusted parameters of the switching power supply controller.

[0035] In this embodiment, the controller optimization parameters refer to specific parameters for optimizing and adjusting the parameters of the controller.

[0036] Specifically, the controller optimization parameters refer to the specific parameters for optimizing and adjusting the controller parameters. The controller parameters are adjusted according to the controller optimization parameters, such as gain, integral time, etc. After the controller parameters are adjusted, the corresponding control signal for the switching power supply is generated to speed up the dynamic response speed of the switching power supply.

[0037] S40: Acquire harmonic data according to the controller optimization parameters, generate a harmonic compensation signal based on the harmonic data, superimpose the harmonic compensation signal on the control signal, and perform a control response on the switching power supply based on the superimposed control signal.

[0038] In this embodiment, the harmonic data refers to the harmonic data of the switching power supply circuit.

[0039] Specifically, the harmonic data of the switching power supply circuit is extracted from the controller optimization parameters, a harmonic compensation signal is generated based on the harmonic data analysis, the harmonic compensation signal is superimposed on the control signal, and the switching power supply is controlled and responded based on the superimposed control signal to offset the harmonic components in the circuit, thereby improving the overall performance of the switching power supply.

[0040] In this embodiment, during the operation of the switching power supply, the controller in the switching power supply will control the operation of the switching power supply and obtain circuit element information of the switching power supply. The switching power supply circuit element information refers to information of various electronic devices constituting the switching power supply circuit, such as resistance, inductance and capacitance, and corresponding values. A circuit mathematical model of the switching power supply is established using the switching power supply circuit element information. The circuit mathematical model includes a state equation and an output equation. During the operation of the switching power supply, the switching power supply state data is obtained in real time. The switching power supply state data refers to data such as input voltage and current when the switching power supply is working. The switching power supply state data is input into the constructed circuit mathematical model to obtain power supply output simulation data. The power supply output simulation data refers to predicting future output data based on the real-time state of the circuit, so that the controller can predict the state of the switching power supply circuit in a future period of time at each sampling moment of the switching power supply, and predict the power supply circuit state in the future. The source output simulation data is analyzed to generate the corresponding switching power supply optimization control instructions, and the switching power supply optimization control instructions are responded to to obtain the controller optimization parameters. The controller optimization parameters refer to the specific parameters for optimizing and adjusting the controller parameters. The controller parameters are adjusted according to the controller optimization parameters, such as gain, integration time, etc. After the controller parameters are adjusted, the corresponding control signal for the switching power supply is generated to speed up the dynamic response speed of the switching power supply. At the same time, the harmonic data is extracted from the controller optimization parameters. The harmonic data refers to the harmonic data of the switching power supply circuit. The harmonic compensation signal is generated according to the harmonic data analysis, and the harmonic compensation signal is superimposed on the control signal. The switching power supply is controlled and responded based on the superimposed control signal to offset the harmonic components in the circuit, improve the dynamic response speed of the three-phase interleaved oblique circuit, enhance the stability of the circuit, and effectively suppress the harmonic components in the circuit, thereby improving the overall performance of the switching power supply.

[0041] In one embodiment, if Figure 2 As shown, in step S10, the switching power supply circuit element information is obtained, and a circuit mathematical model of the switching power supply is established based on the switching power supply circuit element information. The circuit mathematical model includes a state equation and an output equation, specifically including: S11: Acquire inductance data and capacitance data of each phase based on the switching power supply circuit element information.

[0042] In this embodiment, the inductance data refers to the specific value of the inductance of each phase, and the capacitance data refers to the specific value in the three-phase interleaved ramp circuit of the switching power supply.

[0043] Specifically, the three-phase interleaved ramp circuit consists of three independent Boost circuit phases, each phase containing an inductor (L k , where k = 1, 2, 3), a switch (S k ), a diode (Dk ), and a shared output capacitor (C). When constructing the mathematical model of the switching power supply circuit, the specific value of the inductance of each phase and the specific value of the capacitance in the three-phase interleaved oblique circuit of the switching power supply are extracted through the circuit element information of the switching power supply.

[0044] S12: Using the inductance data and capacitance data as variables, constructing a circuit mathematical model of the switching power supply.

[0045] Specifically, the obtained inductance data and capacitance data are used as variables, and the state equation and output equation of the switching power supply are listed based on Kirchhoff's voltage law (KVL) and Kirchhoff's current law (KCL). For each phase k, its inductance current (i k ) can be expressed as: Among them, S k is the state of the switch, usually 0 or 1, is the forward voltage drop on the diode (usually very small and can be approximated to 0).

[0046] Furthermore, the output equation can be expressed as: The voltage V0 of the output capacitor is determined by the currents of all phases and the output current i0.

[0047] The state equation and the output equation describe how the output voltage of the switching power supply changes according to the changes in the current of all phases and the output current. The state equation and the output equation are combined to form a circuit mathematical model of the switching power supply, so as to intuitively analyze the overall performance of the switching power supply and provide the controller with accurate future state data of the switching power supply.

[0048] In one embodiment, if Figure 3 As shown, in step S20, the switch power state data is obtained, the switch power state data is input into the circuit data model, and the power output simulation data is obtained, which specifically includes: S21: Acquire the switch state and input voltage of each phase based on the switch power supply state data.

[0049] S22: Inputting the switch state and input voltage of each phase into the circuit digital model to obtain power supply output analog data.

[0050] Specifically, the switching power supply status data in the three-phase interleaved oblique circuit of the switching power supply is obtained through sensors, measuring equipment or the control system of the switching power supply, and the input voltage of the switching power supply and the switching state of each phase are obtained from the switching power supply status data. The switching state and input voltage of each phase are input into the digital model of the circuit, and the state equation and output equation in the digital model of the circuit are solved using the switching state and input voltage of each phase to obtain the power supply output simulation data to evaluate the performance of the switching power supply.

[0051] In one embodiment, if Figure 4 As shown, in step S30, a switching power supply optimization control instruction is generated based on the power supply output simulation data, a controller optimization parameter is obtained in response to the switching power supply optimization control instruction, a parameter of the switching power supply controller is adjusted according to the controller optimization parameter, and a control signal is obtained based on the adjusted parameter of the switching power supply controller, specifically including: S31: Inputting the power supply output simulation data into a preset data analysis model, acquiring switching power supply mutation data, and generating switching power supply optimization control instructions based on the switching power supply mutation data.

[0052] S32: Responding to the switching power supply optimization control instruction, obtaining controller optimization parameters, inputting the controller optimization parameters into the controller of the switching power supply, and adjusting the parameters of the switching power supply controller.

[0053] Specifically, by analyzing the power supply output simulation data, the power supply output simulation data is input into a preset data analysis model, and the data analysis model is used to extract the switching power supply mutation data from the power supply output simulation data. The switching power supply mutation data refers to the variation data of the switching power supply output caused by the power supply input change or the load mutation. According to the switching power supply mutation data, a corresponding switching power supply optimization control instruction is generated, and the corresponding controller optimization parameters are obtained in response to the switching power supply optimization control instruction. According to the controller optimization parameters, the current parameters of the controller of the switching power supply are adjusted, so that when the power supply input changes or the load mutates, the switching power supply can respond quickly to the mutation situation, thereby improving the dynamic response speed of the three-phase interleaved oblique circuit of the switching power supply.

[0054] In one embodiment, if Figure 5 As shown, in step S31, the power supply output simulation data is input into a preset data analysis model to obtain the switching power supply mutation data, which specifically includes: S311: Perform enhanced filtering processing on the power supply output analog data to obtain processed power supply output analog data.

[0055] S312: Input the processed power output simulation data into a preset data analysis model, extract data jump point information, and integrate the data jump point information to form switching power supply mutation data.

[0056] Specifically, in the process of analyzing the switching power supply output simulation data, the switching power supply output simulation data is enhanced and filtered to improve the accuracy of the switching power supply output simulation data, thereby improving the accuracy of the extraction of the switching power supply mutation data, which is beneficial to the accuracy of the response control of the switching power supply. The processed power supply output simulation data is input into a preset data analysis model, the data jump points in the data are extracted, the starting time point and the receiving time point of the data jump point are obtained, and all the data jump point information is integrated to form the switching power supply mutation data, so as to quickly analyze the function of the sudden change in the working state of the switching power supply.

[0057] In one embodiment, if Figure 6 As shown, in step S40, a harmonic compensation signal is generated based on the harmonic data, the harmonic compensation signal is superimposed on the control signal, and a control response is performed on the switching power supply based on the superimposed control signal, specifically including: S41: Inputting the harmonic data into a preset harmonic analysis model to obtain harmonic components and harmonic frequencies.

[0058] S42: adaptively generate a harmonic compensation signal based on the harmonic components and harmonic frequencies, superimpose the harmonic compensation signal on the control signal, and perform a control response on the switching power supply based on the superimposed control signal.

[0059] Specifically, by analyzing the harmonic data and using a harmonic analysis model to analyze the harmonic data, the harmonic components and harmonic frequencies can be obtained, so that the harmonic frequencies and amplitudes that need to be compensated can be determined more accurately, and harmonic compensation signals can be adaptively generated based on the harmonic components and harmonic frequencies. The parameters of the harmonic compensation signal can be dynamically adjusted based on the real-time harmonic analysis results to ensure more effective harmonic suppression, and the generated harmonic compensation signal can be superimposed on the original control signal. The superimposed control signal is sent to the control circuit of the switching power supply. The adjustment of the control signal should ensure that the switching power supply can operate according to the expected waveform and performance while reducing the impact of harmonics.

[0060] In one embodiment, if Figure 7 As shown, in step S42, the harmonic compensation signal is adaptively generated based on the harmonic components and harmonic frequencies, specifically including: S421: Mapping the harmonic components and harmonic frequencies to a thread pool for harmonic compensation mode adaptation.

[0061] S422: Selecting a harmonic compensation mode with the best adaptability, and generating a harmonic compensation signal based on the harmonic components and harmonic frequencies.

[0062] Specifically, the harmonic components and harmonic frequencies are mapped to the thread pool for harmonic compensation mode adaptation. The thread pool contains multiple working threads for processing different harmonic compensation mode adaptation tasks in parallel. After receiving the harmonic data subset, each thread will try multiple harmonic compensation modes and evaluate the degree of adaptation of each mode to harmonic suppression. According to the preset evaluation criteria (such as minimum harmonic residual, maximum efficiency improvement, etc.), the harmonic compensation mode with the best adaptation degree is selected. Based on the selected optimal harmonic compensation mode, as well as the original harmonic components and harmonic frequency data, the corresponding harmonic compensation signal is generated. The parameters of the compensation signal (such as amplitude, phase, frequency, etc.) should be determined according to the optimal compensation mode to ensure that harmonics can be effectively suppressed.

[0063] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0064] In one embodiment, a switching power supply three-phase interleaved slant circuit control system is provided, and the switching power supply three-phase interleaved slant circuit control system corresponds one-to-one to the switching power supply three-phase interleaved slant circuit control method in the above embodiment. Figure 8 As shown, the switching power supply three-phase interleaved oblique circuit control system includes a mathematical model building module, a switching power supply output simulation module, a switching power supply control optimization module and a harmonic compensation module. The detailed description of each functional module is as follows: A mathematical model building module, used to obtain switching power supply circuit element information, and to build a circuit mathematical model of the switching power supply based on the switching power supply circuit element information, wherein the circuit mathematical model includes a state equation and an output equation; A switching power supply output simulation module, used to obtain switching power supply state data, input the switching power supply state data into the circuit data model, and obtain power supply output simulation data; a switching power supply control optimization module, configured to generate a switching power supply optimization control instruction based on the power supply output simulation data, obtain controller optimization parameters in response to the switching power supply optimization control instruction, adjust parameters of the switching power supply controller according to the controller optimization parameters, and obtain a control signal based on the adjusted parameters of the switching power supply controller; A harmonic compensation module is used to obtain harmonic data according to the controller optimization parameters, generate a harmonic compensation signal based on the harmonic data, superimpose the harmonic compensation signal on the control signal, and control the switching power supply based on the superimposed control signal.

[0065] For the specific definition of the control system of the three-phase interleaved slant circuit of the switching power supply, please refer to the definition of the control method of the three-phase interleaved slant circuit of the switching power supply mentioned above, which will not be repeated here. Each module in the above-mentioned control system of the three-phase interleaved slant circuit of the switching power supply can be implemented in whole or in part by software, hardware and a combination thereof. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above-mentioned modules.

[0066] In one embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as follows: Fig. 9 As shown. The computer device includes a processor, a memory, a network interface and a database connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store the working data of the switching power supply. The network interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a three-phase staggered oblique circuit control method of a switching power supply is implemented.

[0067] In one embodiment, a computer device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the following steps when executing the computer program: Acquire switching power supply circuit element information, and establish a circuit mathematical model of the switching power supply based on the switching power supply circuit element information, wherein the circuit mathematical model includes a state equation and an output equation; Acquire switch power supply state data, input the switch power supply state data into the circuit data model, and acquire power supply output simulation data; Generate a switching power supply optimization control instruction based on the power supply output simulation data, obtain controller optimization parameters in response to the switching power supply optimization control instruction, adjust the parameters of the switching power supply controller according to the controller optimization parameters, and obtain a control signal based on the adjusted parameters of the switching power supply controller; Harmonic data is acquired according to the controller optimization parameters, a harmonic compensation signal is generated based on the harmonic data, the harmonic compensation signal is superimposed on the control signal, and a control response is performed on the switching power supply based on the superimposed control signal.

[0068] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented: Acquire switching power supply circuit element information, and establish a circuit mathematical model of the switching power supply based on the switching power supply circuit element information, wherein the circuit mathematical model includes a state equation and an output equation; Acquire switch power supply state data, input the switch power supply state data into the circuit data model, and acquire power supply output simulation data; Generate a switching power supply optimization control instruction based on the power supply output simulation data, obtain controller optimization parameters in response to the switching power supply optimization control instruction, adjust the parameters of the switching power supply controller according to the controller optimization parameters, and obtain a control signal based on the adjusted parameters of the switching power supply controller; Harmonic data is acquired according to the controller optimization parameters, a harmonic compensation signal is generated based on the harmonic data, the harmonic compensation signal is superimposed on the control signal, and a control response is performed on the switching power supply based on the superimposed control signal.

[0069] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0070] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

[0071] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A method for controlling a three-phase interleaved slant circuit of a switching power supply, characterized in that: The switching power supply three-phase interleaved slant circuit control method comprises the following steps: Acquire switching power supply circuit element information, and establish a circuit mathematical model of the switching power supply based on the switching power supply circuit element information, wherein the circuit mathematical model includes a state equation and an output equation; Acquire switch power supply state data, input the switch power supply state data into the circuit data model, and acquire power supply output simulation data; Generate a switching power supply optimization control instruction based on the power supply output simulation data, obtain controller optimization parameters in response to the switching power supply optimization control instruction, adjust the parameters of the switching power supply controller according to the controller optimization parameters, and obtain a control signal based on the adjusted parameters of the switching power supply controller; Harmonic data is acquired according to the controller optimization parameters, a harmonic compensation signal is generated based on the harmonic data, the harmonic compensation signal is superimposed on the control signal, and a control response is performed on the switching power supply based on the superimposed control signal.

2. A switching power supply three-phase interleaved slant circuit control method according to claim 1, characterized in that: The switching power supply circuit element information is obtained, and a circuit mathematical model of the switching power supply is established based on the switching power supply circuit element information. The circuit mathematical model includes a state equation and an output equation, specifically including: Acquire inductance data and capacitance data of each phase based on the switching power supply circuit element information; The inductance data and the capacitance data are used as variables to construct a circuit mathematical model of the switching power supply.

3. A switching power supply three-phase interleaved slant circuit control method according to claim 1, characterized in that: The acquiring of the switch power supply state data, inputting the switch power supply state data into the circuit data model, and acquiring the power supply output simulation data specifically includes: Acquire the switch state and input voltage of each phase based on the switch power supply state data; The switch state and input voltage of each phase are input into the circuit digital model to obtain power supply output analog data.

4. A switching power supply three-phase interleaved slant circuit control method according to claim 1, characterized in that: The generating of the switching power supply optimization control instruction based on the power supply output simulation data, obtaining the controller optimization parameter in response to the switching power supply optimization control instruction, adjusting the parameters of the switching power supply controller according to the controller optimization parameter, and obtaining the control signal based on the adjusted parameters of the switching power supply controller specifically includes: Inputting the power supply output simulation data into a preset data analysis model, obtaining switch power supply mutation data, and generating a switch power supply optimization control instruction based on the switch power supply mutation data; In response to the switching power supply optimization control instruction, controller optimization parameters are obtained, the controller optimization parameters are input into the controller of the switching power supply, and the parameters of the switching power supply controller are adjusted.

5. A switching power supply three-phase interleaved slant circuit control method according to claim 4, characterized in that: The step of inputting the power supply output simulation data into a preset data analysis model to obtain the switching power supply mutation data specifically includes: Performing enhanced filtering processing on the power supply output analog data to obtain processed power supply output analog data; The processed power supply output simulation data is input into a preset data analysis model to extract data jump point information, and the data jump point information is integrated to form switching power supply mutation data.

6. A switching power supply three-phase interleaved slant circuit control method according to claim 1, characterized in that: The generating of the harmonic compensation signal based on the harmonic data, superimposing the harmonic compensation signal on the control signal, and controlling the switching power supply based on the superimposed control signal specifically includes: Inputting the harmonic data into a preset harmonic analysis model to obtain harmonic components and harmonic frequencies; A harmonic compensation signal is adaptively generated based on the harmonic components and harmonic frequencies, the harmonic compensation signal is superimposed on the control signal, and a control response is performed on the switching power supply based on the superimposed control signal.

7. A switching power supply three-phase interleaved slant circuit control method according to claim 6, characterized in that: The adaptively generating a harmonic compensation signal based on the harmonic components and harmonic frequencies specifically includes: Mapping the harmonic components and harmonic frequencies to a thread pool for harmonic compensation mode adaptation; The harmonic compensation mode with the best adaptability is selected, and a harmonic compensation signal is generated based on the harmonic components and harmonic frequencies.

8. A three-phase interleaved slant circuit control system for a switching power supply, characterized in that: The switching power supply three-phase interleaved slant circuit control system comprises: A mathematical model building module, used to obtain switching power supply circuit element information, and to build a circuit mathematical model of the switching power supply based on the switching power supply circuit element information, wherein the circuit mathematical model includes a state equation and an output equation; A switching power supply output simulation module, used to obtain switching power supply state data, input the switching power supply state data into the circuit data model, and obtain power supply output simulation data; a switching power supply control optimization module, configured to generate a switching power supply optimization control instruction based on the power supply output simulation data, obtain controller optimization parameters in response to the switching power supply optimization control instruction, adjust parameters of the switching power supply controller according to the controller optimization parameters, and obtain a control signal based on the adjusted parameters of the switching power supply controller; A harmonic compensation module is used to obtain harmonic data according to the controller optimization parameters, generate a harmonic compensation signal based on the harmonic data, superimpose the harmonic compensation signal on the control signal, and control the switching power supply based on the superimposed control signal.

9. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of a method for controlling a three-phase interleaved slew circuit of a switching power supply as described in any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of a method for controlling a three-phase interleaved slew circuit of a switching power supply as described in any one of claims 1 to 7 are implemented.

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