Voltage stabilization control method, device and electronic equipment

Abstract

The present invention discloses a voltage stabilization control method, device and electronic device. The method comprises: obtaining operation data of a DC power supply system during operation of the DC power supply system, wherein the DC power supply system comprises a target power supply circuit and a voltage stabilization control circuit, the target power supply circuit is used to represent a power supply circuit to be subjected to voltage stabilization control, and the voltage stabilization control circuit comprises at least a boost converter circuit; based on the operation data, constructing an affine nonlinear expression of the voltage stabilization control circuit, wherein the affine nonlinear expression is used to characterize the nonlinear characteristic relationship of the operation data; based on the affine nonlinear expression, generating a duty cycle control parameter; based on the duty cycle control parameter, controlling the working state of the boost converter circuit to control the target power supply circuit to be in a voltage stabilization state. The present invention solves the technical problem of low efficiency in stabilizing the voltage in the power supply circuit in the related art.

Description

Technical Field

[0001] The present invention relates to the field of voltage control, and in particular to a voltage stabilization control method, device and electronic equipment. Background Art

[0002] Ensuring that the voltage in the power supply circuit is always maintained within the set stable value range, that is, controlling the voltage stability in the power supply circuit, can ensure that the electronic devices in the circuit can work normally and avoid equipment damage or performance degradation due to voltage fluctuations. Voltage stability also helps to improve the stability and reliability of the circuit and ensure the normal operation of the circuit.

[0003] At present, the methods for stabilizing the voltage in the power supply circuit in the related art are relatively complicated, or the control strategy cannot be adjusted in time according to the state changes of the power supply circuit, or the voltage stabilization effect of the power supply circuit implemented by the traditional voltage stabilization control method is poor, that is, the efficiency of stabilizing the voltage in the power supply circuit is low.

[0004] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0005] The embodiments of the present invention provide a voltage stabilization control method, device and electronic equipment to at least solve the technical problem.

[0006] According to one aspect of an embodiment of the present invention, a voltage stabilization control method is provided, comprising: obtaining operation data of a DC power supply system during operation of the DC power supply system, wherein the DC power supply system comprises a target power supply circuit and a voltage stabilization control circuit, the target power supply circuit is used to represent a power supply circuit to be subjected to voltage stabilization control, the voltage stabilization control circuit comprises at least a boost converter circuit, and the operation data is used to represent data generated during operation of the DC power supply system; constructing an affine nonlinear expression of the voltage stabilization control circuit based on the operation data, wherein the affine nonlinear expression is used to characterize a nonlinear characteristic relationship of the operation data; generating a duty cycle control parameter based on the affine nonlinear expression; and controlling a working state of the boost converter circuit based on the duty cycle control parameter to control the target power supply circuit to be in a voltage stable state, wherein the voltage stable state is used to represent that a voltage fluctuation of an electrical signal flowing through the target power supply circuit is less than a preset fluctuation threshold.

[0007] Optionally, the target power supply circuit includes a DC power supply and a load device, and the DC power supply is used to power the load device; based on the operating data, an affine nonlinear expression of the voltage stabilization control circuit is constructed, including: determining a first voltage and a first current in the operating data, wherein the first voltage is used to represent the voltage of the input boost converter circuit, and the first current is used to represent the current of the input load device; based on the first voltage and the first current, an affine nonlinear expression is constructed.

[0008] Optionally, based on the first voltage and the first current, an affine nonlinear expression is constructed, including: based on the first voltage and the first current, constructing an average state equation of the boost converter circuit, wherein the average state equation is used to represent an equation expressing the relationship between the first voltage and the first current when the boost converter circuit operates in a continuous current mode; based on a preset affine nonlinear model and the average state equation, generating an affine nonlinear expression, wherein the preset affine nonlinear model is used to characterize a model of the nonlinear characteristic relationship between the input electrical signal and the output electrical signal of the boost converter circuit.

[0009] Optionally, based on an affine nonlinear expression, a duty cycle control parameter is generated, including: determining a second voltage and a second current in the operating data, wherein the second voltage is used to characterize an actual potential difference across a target capacitor in a boost converter circuit, and the second current is used to represent a current output by a target inductor in the boost converter circuit, a first end of the target capacitor is connected to an output end of the boost converter circuit, and a first end of the target inductor is connected to an input end of the boost converter circuit; and generating a duty cycle control parameter based on the second voltage, the second current and the affine nonlinear expression.

[0010] Optionally, a duty cycle control parameter is generated based on the second voltage, the second current and an affine nonlinear expression, including: obtaining a target reference voltage and a target reference current in a voltage stabilization control circuit, wherein the target reference voltage is used to represent a reference voltage across a target capacitor in a boost converter circuit, and the target reference current is used to represent a reference current flowing through a target inductor in the boost converter circuit; and a duty cycle control parameter is generated based on the target reference voltage, the target reference current, the second voltage, the second current and an affine nonlinear expression.

[0011] Optionally, a duty cycle control parameter is generated based on a target reference voltage, a target reference current, a second voltage, a second current and an affine nonlinear expression, including: generating a first control parameter based on a first preset parameter, a second current and a target reference current, and generating a second control parameter based on a second preset parameter, a second voltage and a target reference voltage, wherein the first preset parameter is used to represent a built-in operating parameter of a first operator in a voltage stabilization control circuit, and the second preset parameter is used to represent a built-in operating parameter of a second operator in a voltage stabilization control circuit; and generating a duty cycle control parameter based on the first control parameter, the second control parameter and an affine nonlinear expression.

[0012] Optionally, based on the first preset parameter, the second current and the target reference current, a first control parameter is generated, including: determining the difference between the second current and the target reference current to obtain a first difference; generating the first control parameter based on the product of the first difference and the first preset parameter; based on the second preset parameter, the second voltage and the target reference voltage, a second control parameter is generated, including: determining the difference between the second voltage and the target reference voltage to obtain a second difference; generating the second control parameter based on the product of the second difference and the second preset parameter.

[0013] Optionally, a duty cycle control parameter is generated based on a first control parameter, a second control parameter and an affine nonlinear expression, including: obtaining a control law expression for controlling a boost converter circuit based on the sum of the first control parameter and the second control parameter, wherein the control law expression is used to represent a constraint relationship between an input signal and an output signal of a controller when the boost converter is in a stable operating state; and generating a duty cycle control parameter based on the control law expression and the affine nonlinear expression.

[0014] According to another aspect of an embodiment of the present invention, a voltage stabilization control device is further provided, comprising: an acquisition module, used to acquire operating data of a DC power supply system during operation of the DC power supply system, wherein the DC power supply system comprises a target power supply circuit and a voltage stabilization control circuit, the target power supply circuit is used to represent a power supply circuit to be subjected to voltage stabilization control, the voltage stabilization control circuit comprises at least a boost converter circuit, and the operating data is used to represent data generated during operation of the DC power supply system; a construction module, used to construct an affine nonlinear expression of the voltage stabilization control circuit based on the operating data, wherein the affine nonlinear expression is used to characterize the nonlinear characteristic relationship of the operating data; a generation module, used to generate a duty cycle control parameter based on the affine nonlinear expression; and a control module, used to control the working state of the boost converter circuit based on the duty cycle control parameter, so as to control the target power supply circuit to be in a voltage stable state, wherein the voltage stable state is used to represent that the voltage fluctuation of an electrical signal flowing through the target power supply circuit is less than a preset fluctuation threshold.

[0015] According to another aspect of an embodiment of the present invention, there is further provided an electronic device, comprising: a memory storing an executable program; and a processor for running the program, wherein the method in each embodiment of the present invention is executed when the program is running.

[0016] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is provided. The computer-readable storage medium includes a stored executable program, wherein when the executable program is running, the device where the computer-readable storage medium is located is controlled to execute the methods in various embodiments of the present invention.

[0017] According to another aspect of an embodiment of the present invention, a computer program product is provided, including a computer program. When the computer program is executed by a processor, the method in each embodiment of the present invention is implemented.

[0018] According to another aspect of an embodiment of the present invention, a computer program product is provided, including a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method in each embodiment of the present invention is implemented.

[0019] According to another aspect of the embodiments of the present invention, a computer program is further provided. When the computer program is executed by a processor, the methods in the embodiments of the present invention are implemented.

[0020] In an embodiment of the present invention, a voltage stabilization control method is provided, comprising: obtaining operation data of a DC power supply system during operation of the DC power supply system, wherein the DC power supply system comprises a target power supply circuit and a voltage stabilization control circuit, the target power supply circuit is used to represent a power supply circuit to be subjected to voltage stabilization control, the voltage stabilization control circuit comprises at least a boost converter circuit, and the operation data is used to represent data generated during operation of the DC power supply system; based on the operation data, constructing an affine nonlinear expression of the voltage stabilization control circuit, wherein the affine nonlinear expression is used to characterize a nonlinear characteristic relationship of the operation data; based on the affine nonlinear expression, generating a duty cycle control parameter; based on the duty cycle control parameter, controlling the working state of the boost converter circuit to control the target power supply circuit to be in a voltage stable state, wherein the voltage stable state is used to represent voltage fluctuations of an electrical signal flowing through the target power supply circuit Less than a preset fluctuation threshold, it is easy to notice that, by acquiring the operating data of the DC power supply system, the present application can understand the working state and voltage fluctuation of the target power supply circuit, thereby providing basic data for stable control, and constructing an affine nonlinear expression suitable for voltage stability control based on the operating data of the DC power supply system, so as to better understand the nonlinear characteristics of the system; based on the affine nonlinear expression, the duty cycle control parameters are generated, and the parameters can be dynamically adjusted according to the real-time voltage data to achieve more intelligent control; by controlling the working state of the boost converter circuit, the voltage output can be adjusted in real time to make the target power supply circuit in a stable state, thereby improving the stability and reliability of the power supply circuit, and effectively solving the technical problem of low efficiency of voltage stability control in the power supply circuit, improving the stability and performance of the system, thereby solving the technical problem of low efficiency of stable control of the voltage in the power supply circuit in the related technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 is a flow chart of a voltage stabilization control method according to an embodiment of the present invention;

[0023] Figure 2 is a schematic diagram of an optional DC power supply system structure according to an embodiment of the present invention;

[0024] Figure 3 is a schematic diagram of an optional process of generating a control law expression in a controller according to an embodiment of the present invention;

[0025] Figure 4 is a schematic diagram of a simulation waveform of a system response when an input voltage changes according to an embodiment of the present invention;

[0026] Figure 5 is a schematic diagram of a response simulation waveform of a system when a constant power load changes according to an embodiment of the present invention;

[0027] Figure 6 is a schematic diagram of a response simulation waveform of a system when a load device is unloaded according to an embodiment of the present invention;

[0028] Figure 7 is a schematic diagram of a voltage stabilization control device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0031] According to an embodiment of the present invention, an embodiment of a voltage stabilization control method is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0032] Figure 1 is a flow chart of a voltage stabilization control method according to an embodiment of the present invention. Figure 1 As shown, the method comprises the following steps:

[0033] Step S102: acquiring operation data of the DC power supply system during the operation of the DC power supply system.

[0034] Among them, the DC power supply system includes a target power supply circuit and a voltage stabilization control circuit. The target power supply circuit is used to represent the power supply circuit to be subjected to voltage stabilization control. The voltage stabilization control circuit includes at least a boost converter circuit. The operating data is used to represent the data generated by the DC power supply system during operation.

[0035] The above-mentioned DC power supply system may refer to an electrical system that converts and transmits electrical energy through a DC power source, such as a battery, a solar cell, etc. In a DC power supply system, the direction of the current remains unchanged. The DC power supply system may be used for equipment and systems that require stable voltage and current output.

[0036] Figure 2 is a schematic diagram of an optional DC power supply system structure according to an embodiment of the present invention, such as Figure 2 As shown, the DC power supply system includes a DC power supply, a load device R, a boost converter circuit and a constant power load circuit. The first end of the boost converter circuit is connected to the positive electrode of the DC power supply, the second end of the boost converter circuit is connected to the first end of the load device, the third end of the boost converter circuit is connected to the second end of the load device, the fourth end of the boost converter circuit is connected to the negative electrode of the DC power supply, the first end of the constant power load circuit is connected to the first end of the load device, and the second end of the constant power load circuit is connected to the second end of the load device; the boost converter circuit includes: an inductor L, a first end of the inductor connected to the first end of the boost converter circuit; a diode D, the anode of the diode is connected to the second end of the inductor, and the cathode of the diode is connected to the second end of the boost converter circuit; a switch tube Q, the first electrode of the switch tube is connected to the second end of the inductor, and the second electrode of the switch tube is connected to the fourth end of the boost converter circuit; a capacitor, the first end of the capacitor C is connected to the second end of the boost converter circuit, and the second end of the capacitor is connected to the third end of the boost converter circuit; wherein the output voltage of the DC power supply can be expressed as Vin, the current output by the inductor can be expressed as iL, and the voltage across the capacitor can be expressed as v C The current flowing into the load device can be expressed as io, and the current flowing into the constant power load circuit can be expressed as ip. The structure of the DC power supply system can also be determined according to actual needs and is not limited to this.

[0037] The above-mentioned operating data may refer to various data generated by the DC power supply system during operation, which may include voltage, current, power, temperature, humidity and other data. The operating data can be used to monitor the operating status of the DC power supply system, determine whether the system is operating normally, and perform fault diagnosis and prevention.

[0038] Specifically, the operating data of the DC power supply system may include but is not limited to voltage, current, temperature, fault records, etc. The output voltage of the system is an important parameter of the DC power supply system, which can be used to check the output stability and load capacity of the system; the output current of the system is another important parameter, which can be used to check the load condition of the system; the electronic components in the DC power supply system will generate heat, and temperature is an important factor affecting the life of the components and the stability of the system. Monitoring the temperature of the system can promptly detect poor heat dissipation or overheating; the system may record fault information that occurs during operation, such as overvoltage, overcurrent, short circuit, etc. Fault records can help engineers quickly locate the cause of the fault. By analyzing the operating data of the DC power supply system, problems can be discovered in a timely manner and measures can be taken to repair them, ensuring stable and reliable operation of the system.

[0039] In an optional embodiment, during the operation of the DC power supply system, by acquiring the operating data of the DC power supply system, the state and performance of the system can be monitored in real time, problems can be discovered in time, and adjustments and optimizations can be made to ensure the stable operation of the system; the operation data of the DC power supply system can be acquired through various sensors and monitoring devices, such as voltage sensors, current sensors, temperature sensors, humidity sensors, etc. These sensors can monitor the operating status of various components of the system, such as voltage, current, temperature and other parameters, and then transmit these data to the monitoring system for analysis and processing; by analyzing the operating data of the DC power supply system, important information such as the load condition, voltage fluctuation condition, power consumption condition of the system can be understood, and the operation and maintenance personnel can be helped to adjust the operating parameters of the system in time to ensure the stable operation of the system. At the same time, the system can also be predicted through historical data analysis. Possible problems of the system can be predicted, and corresponding measures can be taken for preventive maintenance to improve the reliability and stability of the system.

[0040] Step S104: constructing an affine nonlinear expression of the voltage stabilization control circuit based on the operating data.

[0041] Among them, the affine nonlinear expression is used to characterize the nonlinear characteristic relationship of the operating data.

[0042] The above-mentioned affine nonlinear expression may mean that the nonlinear characteristic of the voltage stabilization control circuit may be described by an affine nonlinear function.

[0043] Alternatively, the affine nonlinear function can be a special nonlinear function, and the expression can be expressed as:

[0044] ;

[0045] in, and is a constant, x is the input signal, y is the output signal, wi is the weight coefficient, As the basis function, in the voltage stability control circuit, the affine nonlinear expression can be used to describe the characteristics of the nonlinear elements or controllers in the circuit, as well as the nonlinear relationship between the input and output signals; by performing affine nonlinear modeling on the nonlinear characteristics of each element in the circuit, the dynamic behavior and stability characteristics of the circuit can be more accurately described, thereby achieving more effective voltage stability control. In addition, the affine nonlinear expression can also be used for circuit simulation and simulation analysis, helping engineers better understand the working principle and performance characteristics of the circuit, thereby optimizing the circuit design and control strategy.

[0046] In an optional embodiment, an affine nonlinear expression of a voltage stability control circuit can be constructed based on the operation data of a DC power supply system. By analyzing and modeling the system operation data, the nonlinear characteristic relationship existing in the system can be found, and the nonlinear characteristic relationship can be converted into an expression, so as to design a more effective voltage stability control circuit. Specifically, the operation data of the DC power supply system can be collected. It is necessary to monitor and collect data on the DC power supply system to obtain the operation data of the system such as voltage, current, power, etc. under different working conditions; and the system operation data can be analyzed by using engineering tools and methods to find out the nonlinear characteristic relationship existing therein, such as the nonlinear response and nonlinear coupling of the system; an affine nonlinear expression can be constructed, and an affine nonlinear expression capable of characterizing these relationships can be constructed according to the nonlinear characteristic relationship of the system. The nonlinear relationship can be described by mathematical forms such as polynomials, exponential functions, and logarithmic functions; the constructed affine nonlinear expression can be applied to the design of a voltage stability control circuit, and simulation verification and actual testing can be performed to continuously optimize the parameters and structure of the expression to improve the performance and stability of the voltage stability control system. Through the above steps, an affine nonlinear expression suitable for voltage stability control can be constructed based on the operation data of the DC power supply system, so as to better understand the nonlinear characteristics of the system and design a more effective control circuit.

[0047] Step S106, generating a duty cycle control parameter based on an affine nonlinear expression.

[0048] The above-mentioned duty cycle control parameter may refer to the duty cycle used to describe the size of the pulse signal, which is used to control the on and off time of the signal. For example, in DC motor drive control, the motor speed can be controlled by adjusting the duty cycle of the pulse width modulation signal. When the duty cycle increases, the motor speed will increase, and when the duty cycle decreases, the motor speed will decrease. In the power converter, the duty cycle control parameter is also used to control the size of the output voltage. By adjusting the duty cycle, precise control of the output voltage can be achieved.

[0049] In an optional embodiment, an affine nonlinear expression based on a voltage stabilization control circuit can be used to generate a duty cycle control parameter. Specifically, the input and output relationship of the circuit can be determined. The relationship between the input voltage and the output voltage in the circuit needs to be determined, which can be achieved by establishing a mathematical model of the circuit, which can include considering the nonlinear characteristics and dynamic response of the circuit; a controller can be designed based on the mathematical model of the circuit to achieve stable voltage control, and the controller can include a feedback link to adjust the control parameter based on the difference between the actual output voltage and the expected output voltage; based on the affine nonlinear expression of the circuit, the duty cycle control parameter can be generated by the controller, and the duty cycle control parameter can be used to adjust the switching frequency and duty cycle of the switching device, thereby achieving stable control of the output voltage. Through the above steps, the affine nonlinear expression based on the voltage stabilization control circuit can be achieved to generate the duty cycle control parameter, thereby achieving stable control of the circuit output voltage, which can effectively deal with the nonlinear characteristics and dynamic response in the circuit and improve the stability and performance of the circuit.

[0050] Step S108, based on the duty cycle control parameter, controlling the working state of the boost converter circuit to control the target power supply circuit to be in a voltage stable state.

[0051] The voltage stable state is used to indicate that the voltage fluctuation of the electrical signal flowing through the target power supply circuit is less than a preset fluctuation threshold.

[0052] The above-mentioned electrical signal may refer to a current signal flowing through a target power supply circuit, etc. The electrical signal may be determined according to actual needs and is not limited here.

[0053] The above-mentioned voltage fluctuation may refer to the voltage change that occurs when the electrical signal flows in the power supply circuit, which may be caused by the instability of the power supply itself, parameter changes of components in the circuit, external interference, etc. The voltage fluctuation of the electrical signal flowing through the target power supply circuit can be measured by the following parameters: linearity, the ratio of the voltage fluctuation to the input voltage change, which can be measured by linearity; stability, the voltage fluctuation range and frequency, which can be measured by the stability index; waveform distortion, the degree of deformation of the voltage waveform, can be measured by the waveform distortion index; peak value, the difference between the maximum and minimum values ​​of the voltage waveform, can be measured by the peak value; noise level, the noise level in the voltage waveform, can be measured by the noise index; there is no limitation here, voltage fluctuation will affect the stability and performance of the circuit, so in the field of voltage stability control, corresponding measures need to be taken to reduce voltage fluctuations and ensure the normal operation of the circuit.

[0054] The above-mentioned preset fluctuation threshold may refer to a pre-set threshold range for voltage fluctuation based on the electrical signal flowing through the target power supply circuit to measure whether the target power supply circuit is in a voltage stable state. The preset fluctuation threshold may be determined according to actual needs and is not limited here.

[0055] In an optional embodiment, a boost converter can be used to increase the input voltage to a desired output voltage level. In order to achieve a stable output voltage, the working state of the boost converter needs to be controlled. The duty cycle may refer to the ratio of the switch on time to the cycle time. By adjusting the duty cycle, the switch on time can be controlled, thereby adjusting the output voltage. When the input voltage or load changes, a quick response can be achieved by adjusting the duty cycle to keep the output voltage stable. Specifically, by designing the control circuit of the boost converter, the desired duty cycle value can be calculated based on the feedback signal of the output voltage and the target voltage value. Then, the calculated duty cycle value is input as a control signal into the pulse width modulation controller of the boost converter to control the switch on time, thereby achieving output voltage regulation. By controlling the working state of the boost converter circuit based on the duty cycle control parameter, the target power supply circuit can be effectively placed in a voltage stable state.

[0056] In an embodiment of the present invention, a voltage stabilization control method is provided, comprising: obtaining operation data of a DC power supply system during operation of the DC power supply system, wherein the DC power supply system comprises a target power supply circuit and a voltage stabilization control circuit, the target power supply circuit is used to represent a power supply circuit to be subjected to voltage stabilization control, the voltage stabilization control circuit comprises at least a boost converter circuit, and the operation data is used to represent data generated during operation of the DC power supply system; based on the operation data, constructing an affine nonlinear expression of the voltage stabilization control circuit, wherein the affine nonlinear expression is used to characterize a nonlinear characteristic relationship of the operation data; based on the affine nonlinear expression, generating a duty cycle control parameter; based on the duty cycle control parameter, controlling the working state of the boost converter circuit to control the target power supply circuit to be in a voltage stable state, wherein the voltage stable state is used to represent voltage fluctuations of an electrical signal flowing through the target power supply circuit Less than a preset fluctuation threshold, it is easy to notice that, by acquiring the operating data of the DC power supply system, the present application can understand the working state and voltage fluctuation of the target power supply circuit, thereby providing basic data for stable control, and constructing an affine nonlinear expression suitable for voltage stability control based on the operating data of the DC power supply system, so as to better understand the nonlinear characteristics of the system; based on the affine nonlinear expression, the duty cycle control parameters are generated, and the parameters can be dynamically adjusted according to the real-time voltage data to achieve more intelligent control; by controlling the working state of the boost converter circuit, the voltage output can be adjusted in real time to make the target power supply circuit in a stable state, thereby improving the stability and reliability of the power supply circuit, and effectively solving the technical problem of low efficiency of voltage stability control in the power supply circuit, improving the stability and performance of the system, thereby solving the technical problem of low efficiency of stable control of the voltage in the power supply circuit in the related technology.

[0057] Optionally, the target power supply circuit includes a DC power supply and a load device, and the DC power supply is used to power the load device; based on the operating data, an affine nonlinear expression of the voltage stabilization control circuit is constructed, including: determining a first voltage and a first current in the operating data, wherein the first voltage is used to represent the voltage of the input boost converter circuit, and the first current is used to represent the current of the input load device; based on the first voltage and the first current, an affine nonlinear expression is constructed.

[0058] In an optional embodiment, the voltage stabilization control circuit can ensure that the load device in the target power supply circuit can obtain a stable voltage to ensure the normal operation of the load device. When constructing an affine nonlinear expression of the voltage stabilization control circuit, the first voltage and the first current in the target power supply circuit can be determined. The first voltage refers to the voltage input to the boost converter circuit, which will affect the voltage stability obtained by the load device. The first current refers to the current input to the load device, which affects the power output of the circuit and the working state of the load device. Based on the first voltage and the first current, an affine nonlinear expression can be constructed to describe the dynamic characteristics of the voltage stabilization control circuit. The affine nonlinear expression can be a mathematical model that can describe the nonlinear characteristics and dynamic response in the circuit, helping designers to better understand and control the behavior of the circuit. By constructing an affine nonlinear expression, the design of the voltage stabilization control circuit can be further optimized to improve its stability and performance. The affine nonlinear expression can be used to analyze the stability, response speed and anti-interference ability of the circuit, thereby guiding subsequent circuit optimization and debugging work.

[0059] Optionally, based on the first voltage and the first current, an affine nonlinear expression is constructed, including: based on the first voltage and the first current, constructing an average state equation of the boost converter circuit, wherein the average state equation is used to represent an equation expressing the relationship between the first voltage and the first current when the boost converter circuit operates in a continuous current mode; based on a preset affine nonlinear model and the average state equation, generating an affine nonlinear expression, wherein the preset affine nonlinear model is used to characterize a model of the nonlinear characteristic relationship between the input electrical signal and the output electrical signal of the boost converter circuit.

[0060] In an optional embodiment, according to the circuit structure and working principle of the boost converter, an average state equation of the boost converter circuit can be constructed based on the first voltage and the first current. The average state equation is used to represent the relationship between the first voltage and the first current when the boost converter circuit operates in the continuous current mode. By analyzing the component characteristics and the working mode in the circuit, the average state equation can be obtained to describe the dynamic behavior and stability of the boost converter; an affine nonlinear expression can be generated based on a preset affine nonlinear model and the average state equation. The preset affine nonlinear model can be used to characterize the nonlinear characteristic relationship between the input electrical signal and the output electrical signal of the boost converter circuit, for example, the nonlinear conversion characteristic between the output voltage and the input voltage; by combining the average state equation and the affine nonlinear model, a more comprehensive description of the characteristics and behavior of the boost converter circuit can be obtained; by constructing the average state equation based on the first voltage and the first current, and generating the affine nonlinear expression in combination with the preset affine nonlinear model, the working characteristics of the boost converter circuit can be better understood and controlled, thereby achieving stable voltage control.

[0061] Optionally, the boost converter circuit can be analyzed to operate in a continuous current mode (Continuous Conduction Mode, referred to as CCM). The average state equation of the boost converter circuit can be obtained by the state space averaging method as follows:

[0062] ;

[0063] in, and can represent the state quantity of the DC power supply system, which can be the first voltage and the first current respectively, L and C can represent the inductor current and the capacitor voltage respectively, It can represent the output voltage of the DC power supply, R is the resistive load, P is the constant power load (CPL), and the duty cycle d is the control input (u). and Item, so the voltage stability control circuit is nonlinear;

[0064] The preset affine nonlinear model can be expressed as follows:

[0065] ;

[0066] Among them, the affine nonlinear model of the single-input single-output system is shown in the above formula. If the output function y is a scalar system, it can be regarded as a single-input single-output system. If the output function is in the form of a vector, it can be regarded as a single-input multiple-output system. Based on the average state equation of the boost converter circuit and the preset affine nonlinear model, the standard affine nonlinear model matrix of the boost converter circuit with a constant power load can be obtained as follows:

[0067] ;

[0068] Furthermore, the affine nonlinear expression of the boost converter circuit with constant power load can be written as follows:

[0069] .

[0070] Optionally, based on an affine nonlinear expression, a duty cycle control parameter is generated, including: determining a second voltage and a second current in the operating data, wherein the second voltage is used to characterize an actual potential difference across a target capacitor in a boost converter circuit, and the second current is used to represent a current output by a target inductor in the boost converter circuit, a first end of the target capacitor is connected to an output end of the boost converter circuit, and a first end of the target inductor is connected to an input end of the boost converter circuit; and generating a duty cycle control parameter based on the second voltage, the second current and the affine nonlinear expression.

[0071] In an optional embodiment, a second voltage and a second current in the operating data can be determined, the second voltage is used to characterize the actual potential difference across the target capacitor in the boost converter circuit, and the second current is used to represent the current output by the target inductor in the boost converter circuit, the first end of the target capacitor is connected to the output end of the boost converter circuit, and the first end of the target inductor is connected to the input end of the boost converter circuit, based on the second voltage, the second current and the affine nonlinear expression, a duty cycle control parameter can be generated, by analyzing the affine nonlinear expression of the second voltage and the second current, the relationship between the voltage and the current in the circuit can be obtained, and then the appropriate duty cycle control parameter can be determined; generating the duty cycle control parameter can achieve stable control of the voltage, by adjusting the duty cycle, the conduction time of the switching element in the circuit can be controlled, thereby adjusting the voltage and current in the circuit, by accurately acquiring the data of the second voltage and the second current, and generating the duty cycle control parameter according to the affine nonlinear expression, the stable control of the voltage can be effectively achieved.

[0072] Optionally, a duty cycle control parameter is generated based on the second voltage, the second current and an affine nonlinear expression, including: obtaining a target reference voltage and a target reference current in a voltage stabilization control circuit, wherein the target reference voltage is used to represent a reference voltage across a target capacitor in a boost converter circuit, and the target reference current is used to represent a reference current flowing through a target inductor in the boost converter circuit; and a duty cycle control parameter is generated based on the target reference voltage, the target reference current, the second voltage, the second current and an affine nonlinear expression.

[0073] In an optional embodiment, a target reference voltage and a target reference current in a voltage stabilization control circuit can be obtained. The target reference voltage is used to represent the reference voltage across a target capacitor in a boost converter circuit, and the target reference current is used to represent the reference current flowing through a target inductor in the boost converter circuit. The required target reference voltage and target reference current can be determined by the design requirements and performance indicators of the system. A duty cycle control parameter can be generated based on the target reference voltage and target reference current, as well as a second voltage, a second current and an affine nonlinear expression. Specifically, a suitable duty cycle control parameter can be obtained by processing the target reference voltage and the target reference current in combination with the actual situation and performance requirements of the system. The duty cycle control parameter can be used to control the switching device in the boost converter circuit, thereby achieving stable control of the voltage. The generation of the duty cycle control parameter can take into account factors such as the dynamic characteristics, stability and efficiency of the system to ensure the accuracy and reliability of the voltage stabilization control.

[0074] Optionally, a duty cycle control parameter is generated based on a target reference voltage, a target reference current, a second voltage, a second current and an affine nonlinear expression, including: generating a first control parameter based on a first preset parameter, a second current and a target reference current, and generating a second control parameter based on a second preset parameter, a second voltage and a target reference voltage, wherein the first preset parameter is used to represent a built-in operating parameter of a first operator in a voltage stabilization control circuit, and the second preset parameter is used to represent a built-in operating parameter of a second operator in a voltage stabilization control circuit; and generating a duty cycle control parameter based on the first control parameter, the second control parameter and an affine nonlinear expression.

[0075] In an optional embodiment, a control algorithm can be used to adjust the output voltage in the circuit to maintain it at a set target voltage level. A method for generating control parameters based on preset parameters and target voltage / current can be used to achieve voltage stability control. A first preset parameter and a second preset parameter can be set, which respectively represent built-in operation parameters of a first operator and a second operator in the voltage stability control circuit. The first preset parameter and the second preset parameter can be fixed values ​​determined according to circuit design requirements and actual application conditions. A first control parameter can be generated according to the first preset parameter, the second current and the target reference current. A control algorithm, such as a proportional-integral-differential controller, can be used to generate a first control parameter according to input current information and target voltage / current. The control parameter to be applied to the circuit is calculated based on the reference current; the second control parameter is generated based on the second preset parameter, the second voltage and the target reference voltage, and the second control parameter can be calculated according to the characteristics of the second operator in the circuit and the set target voltage value; the duty cycle control parameter is generated based on the first control parameter, the second control parameter and the affine nonlinear expression, and the first control parameter and the second control parameter can be combined and converted to generate a final control signal for adjusting the duty cycle of the switching element in the circuit, thereby achieving stable control of the output voltage. Through the above steps, appropriate control parameters can be generated based on the preset parameters and the target voltage / current information, thereby achieving stable control of the voltage.

[0076] Optionally, based on the first preset parameter, the second current and the target reference current, a first control parameter is generated, including: determining the difference between the second current and the target reference current to obtain a first difference; generating the first control parameter based on the product of the first difference and the first preset parameter; based on the second preset parameter, the second voltage and the target reference voltage, a second control parameter is generated, including: determining the difference between the second voltage and the target reference voltage to obtain a second difference; generating the second control parameter based on the product of the second difference and the second preset parameter.

[0077] In an optional embodiment, a first control parameter can be generated according to a first preset parameter, a second current and a target reference current. Specifically, a difference between the second current and the target reference current can be determined to obtain a first difference, and the first control parameter can be generated based on the product of the first difference and the first preset parameter. A second control parameter can be generated according to a second preset parameter, a second voltage and a target reference voltage. Specifically, a difference between the second voltage and the target reference voltage can be determined to obtain a second difference, and the second control parameter can be generated based on the product of the second difference and the second preset parameter. Through the above steps, corresponding control parameters can be generated in real time according to the set preset parameters and target reference values, thereby realizing regulation of current and voltage to achieve stable control of voltage, which can help the system to quickly respond to voltage fluctuations and automatically adjust to ensure voltage stability.

[0078] Optionally, a duty cycle control parameter is generated based on a first control parameter, a second control parameter and an affine nonlinear expression, including: obtaining a control law expression for controlling a boost converter circuit based on the sum of the first control parameter and the second control parameter, wherein the control law expression is used to represent a constraint relationship between an input signal and an output signal of a controller when the boost converter is in a stable operating state; and generating a duty cycle control parameter based on the control law expression and the affine nonlinear expression.

[0079] In an optional embodiment, by analyzing the circuit characteristics of the boost converter, a sum value based on the first control parameter and the second control parameter can be obtained, which can represent the degree of regulation of the circuit output by the controller. By mathematically modeling this sum value, an expression of the control law can be obtained to describe the constraint relationship between the input signal and the output signal of the controller. The control law expression and the affine nonlinear expression can be combined to generate a duty cycle control parameter. Through the above steps, stable control of the boost converter circuit can be achieved to ensure that the output voltage operates stably within the set range.

[0080] Optionally, the output function y can be taken as h(x)=y=x2-v Cref , where x2 is the output voltage, and under the output function y, we can get:

[0081] ;

[0082] in, Represents the output function Relative to the vector field From the Lie derivative (i.e., the transformation operation defined in Lie group theory) of the function, we can know that the relative order of the system is r=1, which is not equal to the order of the system. The system cannot be accurately linearized. Since the boost converter circuit with constant power load is a minimum phase system, it is necessary to constrain the inductor current of the system so that the output function of the system can be modified. It can be set as:

[0083] ;

[0084] At the same time, it is assumed that the reference vector of the selected target state quantity is:

[0085] ;

[0086] The output vector is required to track the reference vector, and there are the following multi-objective equations:

[0087] ;

[0088] The ultimate control goal can be .

[0089] The Brunovsky standard form can be constructed using the multi-objective equation of the above formula as follows:

[0090] ;

[0091] Output function components If the system has a first-order relative order, the following holds:

[0092] ;

[0093] It can be seen that the system is a completely controllable linear system. According to the simple optimal quadratic control theory, the control law of the linear system can be obtained, that is, the control law expression is as follows:

[0094] ;

[0095] in, may represent a first preset parameter, Can represent the second preset parameter, i L The second current, i Lref Can represent the target reference current, Can represent the second voltage, v Cref Can indicate target reference voltage;

[0096] Figure 3 FIG. 1 is a schematic diagram of a process of generating a control law expression in an optional controller according to an embodiment of the present invention. Figure 3 As shown, the second current i can be determined Land the target reference current i Lref The difference between the first difference and the first preset parameter is obtained; The product of generates the first control parameter; determines the second voltage and the target reference voltage v Cref The difference between the second difference and the second preset parameter is obtained; based on the second difference and the second preset parameter The product of is used to generate the second control parameter; based on the sum of the first control parameter and the second control parameter, a control law expression v for controlling the boost converter circuit is obtained.

[0097] The nonlinear control law of the system can be obtained from the above Brunovsky standard form and control law expression, that is, the duty cycle control parameters are as follows:

[0098] ;

[0099] Under this method, the final control target is v=0, that is, i L1 and v o You can track i L1ref and v oref , and the calculation of the state balance equation ignores the intermediate loss of the circuit. In fact, when v oref When selected, the actual inductor current flowing through the system is:

[0100] i L1ref =v 2 oref / V in / R+P / V in +i c ;

[0101] Among them, the variable i c is the loss current of the circuit; when the load is low, due to the small intermediate loss, i c can be ignored, instead, i c The negligence of the system causes steady-state error under heavier loads. Therefore, an integral link can be introduced to compensate for the reference current error. The error can be taken as e=v oref -v o , the compensation current generated is .

[0102] With respect to the application of precise feedback linearization and partial feedback linearization in the field of power electronics, this application proposes a bias-free holographic feedback nonlinear control method involving a controller of a DC-DC converter system from a new perspective. The core idea of ​​the method proposed in this application is: when there is a state variable among the selected necessary state variables that has a first-order relative order with the system, the necessary state variables and the reference values ​​of the corresponding state variables can be used to form a deviation equation, and then the deviation equation is made to conform to the Brunovsky standard form. In this way, linear theory can be used to analyze the deviation equation. When the linear deviation equation is controlled to approach zero, the target state quantity of the system can be constrained, thereby making the entire system asymptotically stable. By constraining the necessary state quantities of the system, the non-minimum phase system can be bypassed for direct control. The above process does not need to meet the same harsh conditions as fully precise linearization, nor does it need to analyze the zero dynamics of the system like partially precise linearization.

[0103] The method proposed in the present application utilizes an error function to actively form a Brunofsky standard form of state equation, converting a constant power load system into a completely linear system. It does not need to meet the stringent linearization conditions of traditional precise linearization, is not restricted by non-minimum phase systems, introduces an integral link to compensate for the reference current error, and can achieve zero deviation even under heavy loads. Under the proposed control law, the system response is simplified to a unipolar response. The present application adopts a target holographic feedback nonlinear control method to design a controller for a boost converter with a constant power load. Compared with existing control and linearization technologies, the proposed method can utilize an error function to form a Brunofsky standard form under relatively loose conditions to eliminate the negative impedance characteristics of the constant power load. The higher the system order, the more convenient the above method is to execute, and the non-minimum phase system can be bypassed. The internal dynamics and stability are not restricted, and the above system is not limited by bandwidth, so a faster control speed can be achieved.

[0104] A boost converter simulation model with a constant power load was built on the Matrix Laboratory / Simulation Environment (MATLAB / Simulink) simulation platform to evaluate the performance of the nonlinear control strategy under study. The traditional double closed-loop proportional-integral control method was used for comparison. The inner loop parameter k was selected. cp =2.66, k ci =700, select the voltage outer loop parameter as k vp =0.08, k vi = 139. The circuit parameters of the boost converter are selected as L = 1mH, C = 470μF, f s =30kHz. In the simulation diagram, v oⅰ 、i Lⅰ and i oⅰrepresents the output voltage, inductor current and resistive load current of the system under the optimal harmonic and fundamental negative sequence current (OHFNC) control. In addition, v oⅱ 、i Lⅱ and i oⅱ Represents the output voltage, inductor current, and resistive load current of the system under traditional dual closed-loop proportional-integral control.

[0105] Figure 4 FIG. 1 is a schematic diagram of a simulation waveform of a system response when an input voltage changes according to an embodiment of the present invention. When the input voltage undergoes a step change, the system response is as follows: Figure 4 As shown, Figure 4 The horizontal axis represents time (s), and the vertical axis represents voltage (V) and current (A). oⅰ and i Lⅰ represents the output voltage and inductor current of the system under OHFNC control, v oⅱ and i Lⅱ represents the output voltage and inductor current of the system under the traditional dual closed-loop proportional-integral control. P is the constant power load. At the beginning, the boost converter is connected to the combined load of 50Ω and 10W constant power. The input voltage Vin is 12V. The input voltage Vin changes from 12V to 22V at 0.06s and from 22V to 17V at 0.14s. It can be observed that under the above two control strategies, the DC bus voltage (including the output voltage v oⅰ and the output voltage v oⅱ ) Finally, the 24V reference voltage can be accurately tracked without instability, but under the control of the OHFNC method, the output voltage v can be observed at 0.06s oⅰ There is an overshoot of 1.5V, which recovers to 24V after 0.02s; at 0.14s, the system output voltage has an undershoot of 0.3V, and recovers to the reference value of 24V after 0.02s. Under the above control strategy, the output response of the system has no oscillation behavior, small overshoot and fast dynamic response.

[0106] Under the traditional double closed-loop proportional-integral control, the output voltage v oⅱ At 0.06s, the system output voltage has an overshoot of 3V, and recovers to the reference value after 0.01s. The above process has slight oscillation. At 0.14s, the system output voltage has a undershoot of 1V, and recovers after 0.01s, which is also accompanied by slight oscillation.

[0107] Figure 5 is a schematic diagram of a response simulation waveform of a system when a constant power load changes according to an embodiment of the present invention, such as Figure 5 As shown, the horizontal axis represents time (s), the vertical axis represents voltage (V) and current (A), P is a constant power load, v oⅰ 、i Lⅰ and i oⅰ represents the output voltage, inductor current and resistive load current of the system under OHFNC control, v oⅱ 、i Lⅱ and i oⅱ Represents the output voltage, inductor current and resistive load current of the system under the traditional dual closed-loop proportional-integral control. Figure 5 The waveform of the system response when the constant power load changes is shown. At 0.06s, the constant power load P jumps from 10W to 20W, and at 0.12s, it jumps from 20W to 10W. It can be observed that both control methods can increase the DC bus voltage (including the output voltage v oⅰ and the output voltage v oⅱ ) is stable at a reference value of 24V. Under the control of the OHFNC method, the output voltage overshoot amplitude of the system at 0.06s and 0.12s is similar, 1.2V and 1.1V respectively. Under both control methods, it takes 0.02s to recover to 24V, and there is no oscillation in the whole process. Under the dual closed-loop proportional-integral control, the system output voltage v oⅱ The overshoot amplitudes are 2V and 3V respectively, and are accompanied by an oscillation process, which shows that the OHFNC method has a smaller overshoot and a faster response speed than the traditional dual closed-loop proportional-integral control method; at the same time, Figure 5 The dynamic response waveform of the system when the constant power load is unloaded is shown. It can be seen that at 0.16s, the constant power load P is unloaded from 10W to 0W. Under the control of the OHFNC method, the output voltage v oⅰ A slight overshoot of 0.03V is generated, and it recovers to 24V after 0.03s. However, the system output voltage under traditional proportional-integral control not only has an overshoot of 3V, but is also accompanied by an oscillation process. Therefore, the dynamic performance of the proposed control strategy under constant power load changes is better than that of the traditional dual closed-loop proportional-integral control method.

[0108] Consider the extreme case of system operation, that is, only constant power load is working, Figure 6 is a schematic diagram of a response simulation waveform of a system when a load device is unloaded according to an embodiment of the present invention, such as Figure 6 As shown, the horizontal axis represents time (s), the vertical axis represents voltage (V) and current (A), v oⅰ 、i Lⅰ and i oⅰ represents the output voltage, inductor current and resistive load current of the system under OHFNC control, v oⅱ 、iLⅱ and i oⅱ represents the output voltage, inductor current and resistive load current of the system under the traditional dual closed-loop proportional-integral control. When the resistive load is unloaded at 0.1s, the output voltage overshoot of the system controlled by the OHFNC method is 0.3V, and there is no oscillation in the transient process. The time experienced is 0.2s. Compared with the single-pole response under OHFNC control, the dual closed-loop proportional-integral control method has a voltage overshoot of 5V and a transient oscillation process. Therefore, it can be seen that the proposed method is superior to traditional control in terms of response speed and overshoot.

[0109] According to another aspect of an embodiment of the present invention, a voltage stabilization control device is further provided, which can execute the voltage stabilization control method of the above embodiment. The specific implementation method and preferred application scenario are the same as those of the above embodiment and will not be described in detail here.

[0110] Figure 7 is a schematic diagram of a voltage stabilization control device according to an embodiment of the present application, such as Figure 7 As shown, the device includes the following: an acquisition module 702 , a construction module 704 , a generation module 706 , and a control module 708 .

[0111] Among them, the acquisition module 702 is used to acquire the operation data of the DC power supply system during the operation of the DC power supply system, wherein the DC power supply system includes a target power supply circuit and a voltage stabilization control circuit, the target power supply circuit is used to represent the power supply circuit to be subjected to voltage stabilization control, the voltage stabilization control circuit includes at least a boost converter circuit, and the operation data is used to represent the data generated by the DC power supply system during operation; the construction module 704 is used to construct an affine nonlinear expression of the voltage stabilization control circuit based on the operation data, wherein the affine nonlinear expression is used to characterize the nonlinear characteristic relationship of the operation data; the generation module 706 is used to generate a duty cycle control parameter based on the affine nonlinear expression; the control module 708 is used to control the working state of the boost converter circuit based on the duty cycle control parameter to control the target power supply circuit to be in a voltage stable state, wherein the voltage stable state is used to indicate that the voltage fluctuation of the electrical signal flowing through the target power supply circuit is less than a preset fluctuation threshold.

[0112] Among them, the target power supply circuit includes a DC power supply and a load device, and the DC power supply is used to power the load device; the framework module is also used to determine a first voltage and a first current in the operating data, wherein the first voltage is used to represent the voltage of the input boost converter circuit, and the first current is used to represent the current of the input load device; based on the first voltage and the first current, an affine nonlinear expression is constructed.

[0113] Among them, the framework module is also used to construct an average state equation of the boost converter circuit based on the first voltage and the first current, wherein the average state equation is used to represent an equation expressing the relationship between the first voltage and the first current when the boost converter circuit operates in a continuous current mode; based on a preset affine nonlinear model and the average state equation, an affine nonlinear expression is generated, wherein the preset affine nonlinear model is used to characterize a model of the nonlinear characteristic relationship between the input electrical signal and the output electrical signal of the boost converter circuit.

[0114] Among them, the generation module is also used to determine the second voltage and the second current in the operating data, wherein the second voltage is used to characterize the actual potential difference across the target capacitor in the boost converter circuit, and the second current is used to represent the current output by the target inductor in the boost converter circuit, and the first end of the target capacitor is connected to the output end of the boost converter circuit, and the first end of the target inductor is connected to the input end of the boost converter circuit; based on the second voltage, the second current and the affine nonlinear expression, the duty cycle control parameter is generated.

[0115] Among them, the generation module is also used to obtain the target reference voltage and target reference current in the voltage stabilization control circuit, wherein the target reference voltage is used to represent the reference voltage across the target capacitor in the boost converter circuit, and the target reference current is used to represent the reference current flowing through the target inductor in the boost converter circuit; based on the target reference voltage, the target reference current, the second voltage, the second current and the affine nonlinear expression, the duty cycle control parameter is generated.

[0116] Among them, the generation module is also used to generate a first control parameter based on a first preset parameter, a second current and a target reference current, and to generate a second control parameter based on a second preset parameter, a second voltage and a target reference voltage, wherein the first preset parameter is used to represent a built-in operating parameter of a first operator in a voltage stabilization control circuit, and the second preset parameter is used to represent a built-in operating parameter of a second operator in a voltage stabilization control circuit; and a duty cycle control parameter is generated based on the first control parameter, the second control parameter and an affine nonlinear expression.

[0117] Among them, the generation module is also used to determine the difference between the second current and the target reference current to obtain the first difference; based on the product of the first difference and the first preset parameter, the first control parameter is generated; wherein the generation module is also used to determine the difference between the second voltage and the target reference voltage to obtain the second difference; based on the product of the second difference and the second preset parameter, the second control parameter is generated.

[0118] Among them, the generation module is also used to obtain a control law expression for controlling the boost converter circuit based on the sum of the first control parameter and the second control parameter, wherein the control law expression is used to represent the constraint relationship between the input signal and the output signal of the controller when the boost converter is in a stable operating state; based on the control law expression and the affine nonlinear expression, a duty cycle control parameter is generated.

[0119] An embodiment of the present application further provides an electronic device, comprising: a memory storing an executable program; and a processor for running the program, wherein the program executes the methods in various embodiments of the present invention when running.

[0120] The above-mentioned memory may refer to a device inside a computer for storing data and programs, and may include memory, hard disk, etc., wherein the memory may be used to temporarily store running programs and data, the hard disk may be used to store programs and data for a long time, and the memory may be used to enable the computer to read and write data, and execute programs; the above-mentioned processor may be responsible for executing instructions in computer programs and performing data processing, and may be responsible for controlling and executing various operations, including arithmetic operations, logical operations, data transmission, etc.

[0121] An embodiment of the present application further provides a computer-readable storage medium, which includes a stored executable program, wherein when the executable program is running, the device where the computer-readable storage medium is located is controlled to execute the methods in various embodiments of the present invention.

[0122] The above-mentioned computer storage medium may refer to a medium in a computer memory used to store certain discontinuous physical quantities. Computer storage media mainly include semiconductors, magnetic cores, magnetic drums, magnetic tapes, laser disks, etc.; the stored program included in the computer-readable storage medium may be a set of instructions that can be recognized and executed by a computer, running on an electronic computer, and is an information tool that meets certain needs of people.

[0123] An embodiment of the present application further provides a computer program product, including a computer program, which implements the methods in various embodiments of the present invention when executed by a processor.

[0124] The above-mentioned computer program product may refer to a software program that has been written, tested and released and can be run on a computer or other device. The computer program product may include an application, an operating system, tool software, etc., which is used to implement specific functions or solve specific problems.

[0125] An embodiment of the present application further provides a computer program product, including a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium is used to store a computer program, and when the computer program is executed by a processor, the method in each embodiment of the present invention is implemented.

[0126] The above-mentioned non-volatile computer-readable storage medium may refer to a medium for storing data. The non-volatile computer-readable storage medium can keep the data from being lost when the power is off, and can be used to store long-term data, such as operating systems, applications, and user files. The non-volatile storage medium may include hard disk drives, solid-state drives, optical disks, and flash memory storage devices, etc.

[0127] The embodiments of the present application further provide a computer program, which implements the methods in the above-mentioned embodiments of the present invention when executed by a processor.

[0128] The above-mentioned computer program may refer to a collection of instructions used to tell a computer to perform a specific task or operation. A computer program may be written by a programmer using a specific programming language and may include algorithms, data structures, logic, and control flows. A computer program may be used for a variety of purposes, including application software, operating systems, and the like.

[0129] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0130] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or DC coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, units or modules, which can be electrical or other forms.

[0131] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0132] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0133] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk, etc. Various media that can store program codes.

[0134] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A voltage stabilization control method, characterized in that: The method comprises: During the operation of the DC power supply system, operation data of the DC power supply system is obtained, wherein the DC power supply system includes a target power supply circuit and a voltage stabilization control circuit, the target power supply circuit is used to represent a power supply circuit to be subjected to voltage stabilization control, the voltage stabilization control circuit includes at least a boost converter circuit, and the operation data is used to represent data generated during the operation of the DC power supply system; Based on the operating data, constructing an affine nonlinear expression of the voltage stabilization control circuit, wherein the affine nonlinear expression is used to characterize a nonlinear characteristic relationship of the operating data; Based on the affine nonlinear expression, generating a duty cycle control parameter; Based on the duty cycle control parameter, controlling the working state of the boost converter circuit to control the target power supply circuit to be in a voltage stable state, wherein the voltage stable state is used to indicate that the voltage fluctuation of the electrical signal flowing through the target power supply circuit is less than a preset fluctuation threshold; Wherein, the target power supply circuit includes a DC power supply and a load device, and the DC power supply is used to power the load device; based on the operation data, an affine nonlinear expression of the voltage stabilization control circuit is constructed, including: determining a first voltage and a first current in the operation data, wherein the first voltage is used to represent the voltage input to the boost converter circuit, and the first current is used to represent the current input to the load device; based on the first voltage and the first current, an average state equation of the boost converter circuit is constructed, wherein the average state equation is used to represent an equation expressing the relationship between the first voltage and the first current when the boost converter circuit operates in a continuous current mode; based on a preset affine nonlinear model and the average state equation, the affine nonlinear expression is generated, wherein the preset affine nonlinear model is used to characterize a model of the nonlinear characteristic relationship between the input electrical signal and the output electrical signal of the boost converter circuit.

2. The voltage stabilization control method according to claim 1, characterized in that: Based on the affine nonlinear expression, a duty cycle control parameter is generated, including: Determining a second voltage and a second current in the operating data, wherein the second voltage is used to represent an actual potential difference across a target capacitor in the boost converter circuit, and the second current is used to represent a current output by a target inductor in the boost converter circuit, wherein a first end of the target capacitor is connected to an output end of the boost converter circuit, and a first end of the target inductor is connected to an input end of the boost converter circuit; The duty cycle control parameter is generated based on the second voltage, the second current, and the affine nonlinear expression.

3. The voltage stabilization control method according to claim 2, characterized in that: Generating the duty cycle control parameter based on the second voltage, the second current and the affine nonlinear expression includes: Obtaining a target reference voltage and a target reference current in the voltage stabilization control circuit, wherein the target reference voltage is used to represent a reference voltage across a target capacitor in the boost converter circuit, and the target reference current is used to represent a reference current flowing through a target inductor in the boost converter circuit; The duty cycle control parameter is generated based on the target reference voltage, the target reference current, the second voltage, the second current, and the affine nonlinear expression.

4. The voltage stabilization control method according to claim 3, characterized in that: Generating the duty cycle control parameter based on the target reference voltage, the target reference current, the second voltage, the second current and the affine nonlinear expression includes: Generate a first control parameter based on a first preset parameter, the second current and the target reference current, and generate a second control parameter based on a second preset parameter, the second voltage and the target reference voltage, wherein the first preset parameter is used to represent a built-in operation parameter of a first operator in the voltage stabilization control circuit, and the second preset parameter is used to represent a built-in operation parameter of a second operator in the voltage stabilization control circuit; The duty cycle control parameter is generated based on the first control parameter, the second control parameter and the affine nonlinear expression.

5. The voltage stabilization control method according to claim 4, characterized in that: Generating a first control parameter based on a first preset parameter, the second current and the target reference current, comprising: determining a difference between the second current and the target reference current to obtain a first difference; generating the first control parameter based on a product of the first difference and the first preset parameter; Based on a second preset parameter, the second voltage and the target reference voltage, a second control parameter is generated, including: determining a difference between the second voltage and the target reference voltage to obtain a second difference; and generating the second control parameter based on the product of the second difference and the second preset parameter.

6. The voltage stabilization control method according to claim 4, characterized in that: Generating the duty cycle control parameter based on the first control parameter, the second control parameter and the affine nonlinear expression includes: Based on the sum of the first control parameter and the second control parameter, a control law expression for controlling the boost converter circuit is obtained, wherein the control law expression is used to represent a constraint relationship between an input signal and an output signal of a controller when controlling the boost converter to be in a stable operating state; The duty cycle control parameter is generated based on the control law expression and the affine nonlinear expression.

7. A voltage stabilization control device, characterized in that: include: an acquisition module, used for acquiring operation data of the DC power supply system during operation of the DC power supply system, wherein the DC power supply system includes a target power supply circuit and a voltage stabilization control circuit, the target power supply circuit is used to represent a power supply circuit to be subjected to voltage stabilization control, the voltage stabilization control circuit includes at least a boost converter circuit, and the operation data is used to represent data generated by the DC power supply system during operation; A construction module, used to construct an affine nonlinear expression of the voltage stabilization control circuit based on the operation data, wherein the affine nonlinear expression is used to characterize the nonlinear characteristic relationship of the operation data; A generating module, used for generating a duty cycle control parameter based on the affine nonlinear expression; a control module, configured to control the working state of the boost converter circuit based on the duty cycle control parameter, so as to control the target power supply circuit to be in a voltage stable state, wherein the voltage stable state is used to indicate that the voltage fluctuation of the electrical signal flowing through the target power supply circuit is less than a preset fluctuation threshold; Wherein, the target power supply circuit includes a DC power supply and a load device, and the DC power supply is used to power the load device; the construction module is also used to determine the first voltage and the first current in the operating data, wherein the first voltage is used to represent the voltage input to the boost converter circuit, and the first current is used to represent the current input to the load device; based on the first voltage and the first current, an average state equation of the boost converter circuit is constructed, wherein the average state equation is used to represent an equation expressing the relationship between the first voltage and the first current when the boost converter circuit operates in a continuous current mode; based on a preset affine nonlinear model and the average state equation, the affine nonlinear expression is generated, wherein the preset affine nonlinear model is used to characterize a model of the nonlinear characteristic relationship between the input electrical signal and the output electrical signal of the boost converter circuit.

8. An electronic device, characterized in that: include: A memory storing an executable program; A processor is used to run the program, wherein the voltage stabilization control method according to any one of claims 1 to 6 is executed when the program is run.

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