Parameter optimization method and system of integrated inductor filter, terminal and storage medium

Abstract

The application provides a parameter optimization method and system of an integrated inductance filter, a terminal and a storage medium, relates to the technical field of regulator parameter optimization, and comprises the following steps: obtaining an inductance temperature parameter, a filter capacitance value and an actual voltage value; analyzing the inductance temperature parameter and the filter capacitance value to determine a filter cutoff frequency and an effective inductance value; analyzing the actual voltage value, the filter cutoff frequency and the effective inductance value to determine an inductance adjustment amount; obtaining an initial proportional gain and a current output current; analyzing the inductance adjustment amount, the effective inductance value, the initial proportional gain and the current output current to determine regulator optimization parameters; and controlling a preset regulator to work according to the regulator optimization parameters. The application has the effect of ensuring the stability of regulator operation.

Description

Technical Field

[0001] This application relates to the technical field of voltage regulator parameter optimization, and in particular to a method, system, terminal, and storage medium for parameter optimization of integrated inductor filters. Background Technology

[0002] The parameter optimization method for integrated inductor filters refers to the method of adjusting the inductor parameters to correct the operating parameters of the voltage regulator, with the aim of improving the stability of the voltage regulator operation.

[0003] In related technologies, the parameter optimization method for integrated inductor filters typically involves determining the reference parameters of the inductor and capacitor, as well as the inherent resonant frequency of the filter network, under ideal steady-state conditions using classical circuit theory. Then, fixed correction parameters are determined through testing under various operating conditions, and these fixed correction parameters are used to optimize the parameters of the voltage regulator.

[0004] Regarding the aforementioned technologies, the parameters of the voltage regulator are optimized by using fixed correction parameters. However, when the power grid fluctuates significantly, the filter is prone to resonance with the power grid. The fixed correction parameters cannot respond to power grid fluctuations in a timely manner, thereby affecting the filtering effect and causing a decrease in the stability of the voltage regulator operation. There is still room for improvement. Summary of the Invention

[0005] To ensure the effectiveness of improving the stability of voltage regulator operation, this application provides a method, system, terminal, and storage medium for optimizing the parameters of an integrated inductor filter.

[0006] Firstly, this application provides a method for optimizing the parameters of an integrated inductor filter, employing the following technical solution: Methods for optimizing the parameters of integrated inductor filters include: Obtain inductor temperature parameters, filter capacitance value, and actual voltage value; The inductor temperature parameters and filter capacitance values ​​are analyzed to determine the filter cutoff frequency and effective inductance value. The actual voltage value, filter cutoff frequency, and effective inductance value are analyzed to determine the inductance adjustment amount; Obtain the initial proportional gain and the current output current; The inductance adjustment, effective inductance value, initial proportional gain, and current output current are analyzed to determine the optimal parameters for the regulator. The voltage regulator is controlled to operate according to the preset parameters of the voltage regulator optimization.

[0007] Optionally, the steps of analyzing the inductor temperature parameters and filter capacitance values ​​to determine the filter cutoff frequency and effective inductance value include: Determine the inductor temperature value and inductor temperature coefficient based on the inductor temperature parameters; Calculate the difference between the inductor temperature value and the preset reference temperature value to generate the inductor temperature change value; The effective inductance value is determined by analyzing the inductance temperature change, inductance temperature coefficient, and preset reference inductance value. The filter capacitance and effective inductance values ​​are input into a preset cutoff frequency calculation unit for analysis to determine the filter cutoff frequency.

[0008] Optionally, the steps of analyzing the actual voltage value, filter cutoff frequency, and effective inductance value to determine the inductance adjustment include: Calculate the difference between the actual voltage value and the preset reference voltage value to generate a voltage deviation value; Calculate the quotient of the voltage deviation value and the reference voltage value to generate the voltage distortion rate; Determine whether the voltage distortion rate is less than the preset reference distortion rate; If it is less than, then the preset base adjustment amount is defined as the inductance adjustment amount; If it is not less than, then obtain the power grid harmonic frequency parameters; The filter cutoff frequency, effective inductance value, and grid harmonic frequency parameters are analyzed to determine the inductance adjustment amount.

[0009] Optionally, the steps of analyzing the filter cutoff frequency, effective inductance value, and grid harmonic frequency parameters to determine the inductance adjustment include: Determine the harmonic frequency of a single power grid based on the harmonic frequency parameters of the power grid. Calculate the absolute value of the difference between the filter cutoff frequency and the harmonic frequency of the single grid to generate the actual frequency deviation; Calculate the sum of the actual frequency deviation and the preset frequency tolerance value to generate the harmonic frequency deviation; Calculate the reciprocal of the harmonic frequency deviation to generate the single harmonic influence coefficient; Calculate the sum of the single-harmonic influence coefficients to generate the resonance avoidance coefficient; The resonant avoidance coefficient and effective inductance value are analyzed to determine the inductance adjustment amount.

[0010] Optionally, the steps of analyzing the resonance avoidance factor and the effective inductance value to determine the inductance adjustment amount include: Calculate the difference between the resonance avoidance coefficient and the preset safety avoidance threshold to generate the avoidance deviation value; Calculate the quotient of the avoidance deviation value and the safe avoidance threshold to generate the avoidance ratio value; Calculate the product of the avoidance ratio and the preset inductor gain coefficient to generate the inductor adjustment ratio; Calculate the product of the effective inductance value and the inductance adjustment ratio to generate the inductance adjustment amount.

[0011] Optionally, the steps of analyzing the inductor adjustment, effective inductance value, initial proportional gain, and current output current to determine the regulator optimization parameters include: Obtain historical output current; Calculate the difference between the current output current and the historical output current to generate the current deviation value; Calculate the quotient of the current deviation value and the preset sampling period to generate the current change rate; Calculate the product of the rate of change of current and the inductance adjustment to generate the current inductor voltage drop; The difference between the preset output voltage value and the current inductor voltage drop is calculated to generate the final output voltage; The inductance adjustment, effective inductance value, and initial proportional gain are analyzed to determine the final proportional gain. Correlate the final output voltage and the final proportional gain to generate the regulator optimization parameters.

[0012] Optionally, the steps of analyzing the inductor adjustment, effective inductance value, and initial proportional gain to determine the final proportional gain include: Calculate the sum of the inductance adjustment and the effective inductance value to generate the equivalent inductance value; Calculate the quotient of the equivalent inductance and the effective inductance to generate the proportional gain adjustment factor; Calculate the product of the proportional gain adjustment factor and the initial proportional gain to generate the final proportional gain.

[0013] Secondly, this application provides a parameter optimization system for an integrated inductor filter, employing the following technical solution: The parameter optimization system for integrated inductor filters includes: The acquisition module is used to acquire inductor temperature parameters, filter capacitance value, actual voltage value, initial proportional gain, and current output current. A memory for storing a program for the parameter optimization method of the integrated inductor filter as described in any of the preceding claims; The processor and the program in the memory can be loaded and executed by the processor to implement the parameter optimization method for the integrated inductor filter as described in any of the above.

[0014] Thirdly, this application provides a smart terminal, which adopts the following technical solution: A smart terminal includes a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and execute the parameter optimization method for the integrated inductor filter as described in any of the preceding claims.

[0015] Fourthly, this application provides a computer storage medium capable of storing corresponding programs, which facilitates the achievement of improving the stability of voltage regulator operation, and adopts the following technical solution: A computer-readable storage medium storing a computer program that can be loaded by a processor and executed for any of the above-described integrated inductor filter parameter optimization methods.

[0016] In summary, this application includes at least one of the following beneficial technical effects: 1. By analyzing the inductor temperature parameters and filter capacitance values, the filter cutoff frequency and effective inductance value are determined. Then, by analyzing the actual voltage value, filter cutoff frequency, and effective inductance value, the inductor adjustment amount is determined. Finally, by analyzing the inductor adjustment amount, effective inductance value, initial proportional gain, and current output current, the regulator optimization parameters are determined. Based on these optimized parameters, the regulator is controlled to operate. When there are large grid fluctuations, the inductor is adjusted to adapt to these fluctuations, thus determining the regulator optimization parameters. This effectively avoids resonance between the filter and the grid while improving the stability of the regulator's operation. 2. A voltage deviation value is generated by calculating the difference between the actual voltage value and the reference voltage value. The voltage distortion rate is generated by calculating the quotient of the voltage deviation value and the reference voltage value. When the voltage distortion rate is less than the reference distortion rate, the basic adjustment amount is directly defined as the inductance adjustment amount. When the voltage distortion rate is not less than the reference distortion rate, the inductance adjustment amount is determined after analyzing the filter cutoff frequency, effective inductance value, and grid harmonic frequency parameters. Thus, the degree of resonance between the filter and the grid is reflected based on the voltage distortion rate. When the degree of resonance is high, the inductance is adjusted to make the filter's resonant frequency move away from the grid's resonant frequency, thereby ensuring the effect of improving the stability of the voltage regulator operation. 3. A current deviation value is generated by calculating the difference between the current output current and the historical output current. The current change rate is generated by calculating the quotient of the current deviation value and the sampling period. The current change rate is then calculated as the product of the current change rate and the inductor adjustment to generate the current inductor voltage drop. The difference between the output voltage value and the current inductor voltage drop is then calculated to generate the final output voltage. The final proportional gain is determined by analyzing the inductor adjustment, the effective inductance value, and the initial proportional gain. When the filter resonates with the power grid to a high degree, this virtual inductor voltage drop is subtracted from the output voltage based on the inductor adjustment, thereby obtaining the equivalent inductance value to avoid the resonant frequency. Attached Figure Description

[0017] Figure 1 This is a flowchart of the parameter optimization method for the integrated inductor filter in the embodiments of this application.

[0018] Figure 2This is a flowchart illustrating the steps in this application embodiment to analyze the inductor temperature parameters and filter capacitance values ​​to determine the filter cutoff frequency and effective inductance value.

[0019] Figure 3 This is a flowchart illustrating the steps in this application embodiment to analyze the actual voltage value, filter cutoff frequency, and effective inductance value to determine the inductance adjustment amount.

[0020] Figure 4 This is a flowchart illustrating the steps in this application embodiment to analyze the filter cutoff frequency, effective inductance value, and power grid harmonic frequency parameters to determine the inductance adjustment amount.

[0021] Figure 5 This is a flowchart illustrating the steps in this application embodiment to analyze the resonance avoidance coefficient and the effective inductance value to determine the inductance adjustment amount.

[0022] Figure 6 This is a flowchart illustrating the steps in this application embodiment to analyze the inductor adjustment amount, effective inductance value, initial proportional gain, and current output current to determine the regulator optimization parameters.

[0023] Figure 7 This is a flowchart illustrating the steps in this application embodiment to analyze the inductance adjustment amount, effective inductance value, and initial proportional gain to determine the final proportional gain. Detailed Implementation

[0024] To make the purpose, technical solution, and advantages of this application clearer, the following description is provided in conjunction with the appendix. Figures 1 to 7 The present application will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the application.

[0025] This application discloses a parameter optimization method for an integrated inductor filter. Specifically, it discloses a voltage regulator and a processing terminal. The processing terminal is communicatively connected to the voltage regulator to achieve data interaction and control. After the processing terminal determines the inductor temperature parameters, filter capacitance value, and actual voltage value, it analyzes the inductor temperature parameters and filter capacitance value to determine the filter cutoff frequency and effective inductance value. Then, it analyzes the actual voltage value, filter cutoff frequency, and effective inductance value to determine the inductor adjustment amount. After analyzing the inductor adjustment amount, effective inductance value, initial proportional gain, and current output current, it determines the voltage regulator optimization parameters. The voltage regulator is then controlled to operate according to the voltage regulator optimization parameters. Thus, when the power grid fluctuates significantly, the inductor is adjusted to adapt to the power grid fluctuations, thereby determining the voltage regulator optimization parameters. This effectively avoids resonance between the filter and the power grid while improving the stability of the voltage regulator operation.

[0026] Reference Figure 1This application discloses a parameter optimization method for an integrated inductor filter, comprising the following steps: Step S100: Obtain the inductor temperature parameters, filter capacitance value, and actual voltage value.

[0027] The inductor temperature parameter refers to parameters related to inductor temperature, including the inductor temperature value and the inductor temperature coefficient. The inductor temperature value is read from the temperature sensor by the processing terminal, while the inductor temperature coefficient is found in the specifications provided by the inductor manufacturer. By determining the inductor temperature parameter, the effective inductance value can be determined based on it. This effectively avoids the drift of the effective inductance value caused by the temperature rise during long-term operation of the voltage regulator, thus providing data support for subsequent determination of the effective inductance value.

[0028] The filter capacitance value refers to the capacitance of the filter, which can be found in the datasheet provided by the capacitor manufacturer. The filter capacitance value is strongly correlated with the filter cutoff frequency; the larger the filter capacitance value, the smaller the filter cutoff frequency, thus providing data support for subsequently determining the filter cutoff frequency.

[0029] The actual voltage value refers to the voltage value actually measured by the current system, which is read by the voltage detection circuit in the voltage regulator from the processing terminal. By determining the actual voltage value, the voltage distortion rate can be determined, and then the degree of resonance between the filter and the power grid can be determined, so as to subsequently determine the inductor adjustment amount.

[0030] Step S101: Analyze the inductor temperature parameters and filter capacitance values ​​to determine the filter cutoff frequency and effective inductance value.

[0031] The filter cutoff frequency refers to the boundary frequency at which the filter allows and blocks electrical signals. It is obtained by the processing terminal after analyzing the inductor temperature parameters and filter capacitance values. For specific methods, please refer to [reference needed]. Figure 2 The steps are as follows: By determining the filter cutoff frequency, the deviation between the filter and the grid resonant frequency is determined, which facilitates the subsequent determination of the resonance avoidance coefficient.

[0032] The effective inductance value refers to the actual effective value of the inductor under the influence of the regulator's temperature rise. It is obtained by the processing terminal after analyzing the inductor temperature parameters and the filter capacitance value. For specific methods, please refer to [link / reference needed]. Figure 2 The steps involve determining the effective inductance value, adjusting the inductance when the filter resonates highly with the power grid, thereby moving the filter's resonant frequency away from the power grid's resonant frequency and ensuring improved stability of the voltage regulator operation.

[0033] Step S102: Analyze the actual voltage value, filter cutoff frequency, and effective inductance value to determine the inductance adjustment amount.

[0034] The inductance adjustment refers to the amount of inductance adjusted based on the resonance between the filter and the power grid. This adjustment is obtained by the processing terminal after analyzing the actual voltage value, the filter cutoff frequency, and the effective inductance value. Specific methods are detailed in [reference needed]. Figure 3 The steps are as follows: By determining the inductance adjustment amount, when the resonance level is high, the inductance is adjusted to make the filter's resonant frequency far away from the grid's resonant frequency, thereby ensuring the effect of improving the stability of the voltage regulator's operation.

[0035] Step S103: Obtain the initial proportional gain and the current output current.

[0036] The initial proportional gain refers to the proportional gain of the current loop in the voltage regulator, which is read from the regulator's control system by the processing terminal. By determining the initial proportional gain, it can be adjusted after inductor adjustment to compensate for the system response lag caused by the increase in inductance.

[0037] The current output current refers to the actual output current at the current moment, which is read by the processing terminal from the current sensor on the voltage regulator's hardware circuit. By determining the current output current, the rate of change of the current can be determined, thus providing data support for subsequently determining the voltage regulator's optimization parameters.

[0038] Step S104: Analyze the inductance adjustment, effective inductance value, initial proportional gain, and current output current to determine the regulator optimization parameters.

[0039] Among them, the regulator optimization parameters refer to the relevant parameters for optimizing the regulator's operating performance, including the final output voltage and the final proportional gain. These are obtained by the processing terminal after analyzing the inductor adjustment, effective inductance value, initial proportional gain, and current output current. Specific methods are detailed in [reference needed]. Figure 6 The steps involve determining the optimal parameters of the voltage regulator, thereby adjusting the inductor to adapt to grid fluctuations when grid fluctuations are significant. This effectively prevents resonance between the filter and the grid, thus ensuring improved stability of the voltage regulator operation.

[0040] Step S105: Control the preset voltage regulator to operate according to the voltage regulator optimization parameters.

[0041] After determining the optimized parameters of the voltage regulator, the processing terminal controls the voltage regulator to operate according to the optimized parameters. In this way, when the power grid fluctuates greatly, the inductor is adjusted to adapt to the fluctuations of the power grid, effectively avoiding resonance between the filter and the power grid. At the same time, it can effectively offset the impact of system response lag, thereby ensuring the effect of improving the stability of the voltage regulator operation.

[0042] A voltage regulator is a device used to stabilize voltage output. It consists of a control system, compensation circuit, voltage detection circuit, neutral return circuit, servo motor control circuit, reduction gear transmission mechanism, main circuit switch operation circuit, and voltage measurement and protection circuit. The control system coordinates the various circuits within the regulator to achieve inter-circuit control. The compensation circuit adjusts the voltage to cope with grid fluctuations. The voltage detection circuit monitors the input and output voltages. The neutral return circuit provides feedback on the output voltage. The servo motor control circuit drives the contact voltage regulator via the reduction gear transmission mechanism and adjusts the voltage compensation amount based on the signal from the voltage detection circuit. The main circuit switch operation circuit controls the on / off switching of the regulator's main power supply. The voltage measurement and protection circuit monitors operating parameters and activates protection mechanisms to ensure safe operation of the regulator in case of abnormal operating conditions such as overvoltage, undervoltage, or overcurrent.

[0043] Reference Figure 2 The steps for analyzing inductor temperature parameters and filter capacitance values ​​to determine the filter cutoff frequency and effective inductance value include: Step S200: Determine the inductor temperature value and inductor temperature coefficient based on the inductor temperature parameters.

[0044] The inductor temperature value refers to the inductor's current operating temperature, which is identified and retrieved by the processing terminal from the inductor temperature parameters. By determining the inductor temperature value, the difference between the current inductor operating temperature and the reference temperature value is determined, thus providing data support for subsequently determining the inductor temperature change value.

[0045] The inductance temperature coefficient is a value that measures how much the inductance value changes with temperature. It is identified and retrieved by the processing terminal from the inductance temperature parameters. By determining the inductance temperature coefficient, the true value of the inductance under the influence of the voltage regulator's temperature rise can be determined, thus providing data support for subsequently determining the effective inductance value.

[0046] Step S201: Calculate the difference between the inductor temperature value and the preset reference temperature value to generate the inductor temperature change value.

[0047] The inductor temperature change value refers to the difference between the inductor's operating temperature and the reference temperature, which is obtained by the processing terminal after calculating the difference between the inductor temperature value and the reference temperature value. By determining the inductor temperature change value, the difference between the current operating temperature and the reference temperature can be determined. The larger the inductor temperature change value, the larger the effective inductance value, thus providing data support for subsequently determining the effective inductance value.

[0048] The reference temperature value refers to the standard operating temperature of the inductor, which is set in advance by the operator. In this step, the reference temperature value is set to room temperature. Under the condition that the reference temperature value remains unchanged, the higher the inductor temperature value, the greater the difference between the inductor operating temperature and the reference temperature. Therefore, the inductor value is more affected by temperature, which is helpful for determining the effective inductance value later.

[0049] Step S202: Analyze the inductor temperature change value, inductor temperature coefficient and preset reference inductor value to determine the effective inductor value.

[0050] After determining the inductor temperature change value, the processing terminal analyzes the inductor temperature change value, the inductor temperature coefficient, and the reference inductance value to determine the effective inductance value, which can be expressed as follows: ,in Indicates the effective inductance value. Indicates the reference inductance value. Indicates the temperature coefficient of inductance. This represents the change in inductance temperature. With the inductance temperature coefficient and the reference inductance value remaining constant, a larger change in inductance temperature indicates a higher operating temperature of the inductor, a greater influence of temperature changes on the actual inductance value, and therefore a larger effective inductance value.

[0051] The reference inductance value refers to the inductance value of the inductor at a reference temperature, which can be found in the datasheet provided by the inductor manufacturer. By determining the reference inductance value, the inductance value of the inductor at the reference temperature can be determined. Then, based on the inductor temperature change and the inductor temperature coefficient, the inductance value at the current operating temperature can be determined.

[0052] Step S203: Input the filter capacitance value and effective inductance value into the preset cutoff frequency calculation unit for analysis to determine the filter cutoff frequency.

[0053] After determining the effective inductance value, the processing terminal inputs the filter capacitance value and the effective inductance value into the cutoff frequency calculation unit for analysis to obtain the filter cutoff frequency. By determining the filter cutoff frequency, the deviation between the filter and the grid resonant frequency is determined, which facilitates the subsequent determination of the resonance avoidance coefficient.

[0054] The cutoff frequency calculation unit refers to the calculation unit used to determine the cutoff frequency of the filter, and can be represented as follows: ,in Indicates the filter cutoff frequency. Indicates the effective inductance value. Indicates the filter capacitance value. This represents pi. With the filter capacitance and pi remaining constant, the inductance decreases due to the temperature rise of the voltage regulator, causing the actual filter cutoff frequency to drift towards higher frequencies. This results in a larger filter cutoff frequency, which facilitates the subsequent determination of the inductance adjustment.

[0055] Reference Figure 3 The steps for determining the inductance adjustment amount by analyzing the actual voltage value, filter cutoff frequency, and effective inductance value include: Step S300: Calculate the difference between the actual voltage value and the preset reference voltage value to generate a voltage deviation value.

[0056] The voltage deviation value refers to the deviation between the current voltage and the reference voltage value, which is obtained by the processing terminal calculating the difference between the actual voltage value and the reference voltage value. By determining the voltage deviation value, the degree of deviation between the current voltage and the reference voltage can be determined, thereby providing data support for subsequent determination of the voltage distortion rate.

[0057] The reference voltage value refers to an ideal voltage value free from harmonics and distortion, which is obtained in advance by the operator. First, the current actual grid voltage is sampled. Then, the fundamental frequency and zero-crossing phase of the current grid voltage are extracted using a phase-locked loop algorithm. Finally, an ideal voltage value free from harmonics and distortion, synchronized with the current grid, is calculated using a sine function equation.

[0058] Step S301: Calculate the quotient of the voltage deviation value and the reference voltage value to generate the voltage distortion rate.

[0059] The voltage distortion rate is a value that measures the degree of resonance between the filter and the power grid. It is obtained by calculating the voltage deviation value and the reference voltage value from the processing terminal. By determining the voltage distortion rate, it is possible to determine whether the filter is at risk of resonance with the power grid at the current moment. Furthermore, when the degree of resonance is high, the inductor is adjusted to make the filter's resonant frequency far away from the power grid's resonant frequency, thereby ensuring the stability of the voltage regulator operation.

[0060] Step S302: Determine whether the voltage distortion rate is less than the preset reference distortion rate.

[0061] The reference distortion rate is a value that measures the degree of resonance between the filter and the power grid, and is set in advance by the operator. By determining whether the voltage distortion rate is less than the reference distortion rate, it is determined whether there is a risk of resonance between the filter and the power grid at the current moment, so as to determine the inductance adjustment amount subsequently.

[0062] Step S3021: If it is less than, then the preset basic adjustment amount is defined as the inductance adjustment amount.

[0063] If the voltage distortion rate is less than the reference distortion rate, it means that the filter does not have the risk of resonance with the power grid at the current moment. Therefore, the processing terminal directly defines the basic adjustment amount as the inductance adjustment amount to facilitate the subsequent determination of the regulator optimization parameters.

[0064] The basic adjustment amount refers to the inductor adjustment amount when the filter does not resonate with the power grid. It is set in advance by the operator. Since there is no risk of the filter resonating with the power grid at the current moment, there is no need to adjust the inductor. Therefore, the basic adjustment amount is set to 0 in this step to facilitate the determination of the inductor adjustment amount.

[0065] Step S3022: If it is not less than, then obtain the power grid harmonic frequency parameters.

[0066] If the voltage distortion rate is not less than the reference distortion rate, it indicates that the voltage distortion is relatively large at the current moment, and therefore the risk of resonance between the filter and the power grid is relatively high. At this time, the processing terminal obtains the harmonic frequency parameters of the power grid in order to determine the inductor adjustment amount in the future.

[0067] The power grid harmonic frequency parameters refer to the main harmonic frequencies of the power grid, including the 3rd, 5th, 7th, 11th, and 13th harmonics, which are stored by the operator in the processing terminal. By determining the power grid harmonic frequency parameters, the deviation between the filter cutoff frequency and the main harmonic frequencies of the power grid can be determined, which facilitates the subsequent determination of the resonance avoidance factor.

[0068] Step S30221: Analyze the filter cutoff frequency, effective inductance value, and grid harmonic frequency parameters to determine the inductance adjustment amount.

[0069] After determining the grid harmonic frequency parameters, the processing terminal analyzes the filter cutoff frequency, effective inductance value, and grid harmonic frequency parameters to determine the inductance adjustment amount. The specific method is described in [reference needed]. Figure 4 The steps are as follows: By determining the inductance adjustment amount, when the resonance level is high, the inductance is adjusted to make the filter's resonant frequency far away from the grid's resonant frequency, thereby ensuring the effect of improving the stability of the voltage regulator's operation.

[0070] The inductor adjustment amount in this step is the same as the inductor adjustment amount in step S3021. The difference is that the inductor adjustment amount in this step is obtained by the processing terminal after analyzing the filter cutoff frequency, effective inductance value and power grid harmonic frequency parameters.

[0071] Reference Figure 4 The steps for determining the inductance adjustment amount by analyzing the filter cutoff frequency, effective inductance value, and grid harmonic frequency parameters include: Step S400: Determine the harmonic frequency of a single power grid based on the power grid harmonic frequency parameters.

[0072] The single-grid harmonic frequency refers to one of the main harmonic frequencies of the power grid, which is identified and retrieved by the processing terminal from the grid harmonic frequency parameters. In this step, the single-grid harmonic frequency is the 3rd, 5th, 7th, 11th, or 13th harmonic. By determining the single-grid harmonic frequency, the deviation between the filter cutoff frequency and the main harmonic frequency of the power grid is determined, thus providing data support for subsequently determining the actual frequency deviation.

[0073] Step S401: Calculate the absolute value of the difference between the filter cutoff frequency and the single grid harmonic frequency to generate the actual frequency deviation.

[0074] The actual frequency deviation refers to the deviation between the current filter cutoff frequency and the main harmonic frequencies of the power grid. It is obtained by calculating the absolute value of the difference between the filter cutoff frequency and the harmonic frequencies of the single power grid from the processing terminal. By determining the actual frequency deviation, the similarity between the filter cutoff frequency and the main harmonic frequencies of the power grid can be determined, which facilitates the subsequent determination of the harmonic frequency deviation.

[0075] Step S402: Calculate the sum of the actual frequency deviation and the preset frequency tolerance value to generate the harmonic frequency deviation.

[0076] The harmonic frequency deviation is a value obtained by adding a small constant to the actual frequency deviation. It is calculated by the processing terminal as the sum of the actual frequency deviation and the frequency tolerance value. By determining the harmonic frequency deviation, the occurrence of a harmonic frequency deviation of 0 can be effectively avoided, thus facilitating the subsequent determination of the single harmonic influence coefficient.

[0077] The frequency tolerance value is a tiny constant set to prevent the harmonic frequency deviation from being zero. It is set in advance by the operator. Usually, frequency differences below 0.1Hz are not accurately distinguishable. Therefore, in this step, the frequency tolerance value is set to 0.5Hz to avoid the situation where the harmonic frequency deviation is zero, so as to facilitate the subsequent determination of the single harmonic influence coefficient.

[0078] Step S403: Calculate the reciprocal of the harmonic frequency deviation to generate the single harmonic influence coefficient.

[0079] The single harmonic influence coefficient refers to the degree to which the filter cutoff frequency is close to a power grid resonant frequency. It is obtained by calculating the reciprocal of the harmonic frequency deviation from the power grid using the processing terminal. The smaller the harmonic frequency deviation, the closer the filter cutoff frequency is to the harmonic frequency of the power grid, and therefore the larger the single harmonic influence coefficient, thus providing data support for the subsequent determination of the resonance avoidance coefficient.

[0080] Step S404: Calculate the sum of the single harmonic influence coefficients to generate the resonance avoidance coefficient.

[0081] The resonance avoidance coefficient measures the similarity between the filter's cutoff frequency and the harmonic frequency parameters of the power grid. It is obtained by summing the single-harmonic influence coefficients calculated by the processing terminal. By determining the resonance avoidance coefficient, the similarity between the current filter's cutoff frequency and the main harmonic frequencies of the power grid can be determined, facilitating subsequent adjustments to the inductor based on the resonance avoidance coefficient.

[0082] Step S405: Analyze the resonance avoidance coefficient and the effective inductance value to determine the inductance adjustment amount.

[0083] After determining the resonance avoidance coefficient, the processing terminal analyzes the resonance avoidance coefficient and the effective inductance value to determine the inductance adjustment amount. The specific method is described in [reference needed]. Figure 5 The steps are as follows: By determining the inductance adjustment amount, when the resonance level is high, the inductance is adjusted to make the filter's resonant frequency far away from the grid's resonant frequency, thereby ensuring the effect of improving the stability of the voltage regulator's operation.

[0084] Reference Figure 5 The steps for analyzing the resonance avoidance coefficient and effective inductance value to determine the inductance adjustment amount include: Step S500: Calculate the difference between the resonance avoidance coefficient and the preset safety avoidance threshold to generate the avoidance deviation value.

[0085] The avoidance deviation value refers to the value that measures how close the current filter cutoff frequency is to the main harmonic frequency of the power grid, exceeding the safe avoidance threshold. It is obtained by the processing terminal calculating the difference between the resonance avoidance coefficient and the safe avoidance threshold. By determining the avoidance deviation value, the proportion by which the current filter cutoff frequency is close to the main harmonic frequency of the power grid exceeds the safe avoidance threshold is determined, thus providing data support for subsequently determining the avoidance ratio value.

[0086] The safety avoidance threshold is a safety threshold that measures how close the current filter cutoff frequency is to the main harmonic frequency of the power grid. It is set in advance by the operator and provides data support for determining the avoidance deviation value.

[0087] Step S501: Calculate the quotient of the avoidance deviation value and the safe avoidance threshold to generate the avoidance ratio value.

[0088] The avoidance ratio value refers to the proportion by which the current filter cutoff frequency is too close to the main harmonic frequency of the power grid, exceeding the safe avoidance threshold. It is obtained by the processing terminal calculating the quotient of the avoidance deviation value and the safe avoidance threshold. By determining the avoidance ratio value, the severity of the proximity between the filter cutoff frequency and the main harmonic frequency of the power grid is reflected, thus providing data support for subsequently determining the inductor adjustment ratio.

[0089] Step S502: Calculate the product of the avoidance ratio value and the preset inductor gain coefficient to generate the inductor adjustment ratio.

[0090] The inductor adjustment ratio refers to the value that measures how much the inductor needs to be adjusted. It is obtained by calculating the product of the avoidance ratio and the inductor gain coefficient at the processing terminal. By determining the inductor adjustment ratio, the required adjustment ratio of the current inductor is determined. Then, by adjusting the inductor, the resonant frequency of the filter is moved away from the resonant frequency of the power grid, thereby ensuring the improvement of the stability of the voltage regulator operation.

[0091] The inductor gain coefficient is a value that measures the adjustment strength of the inductor, obtained by the operator through prior calibration tests. First, the peak value of the corresponding resonance avoidance coefficient and the specific frequency at which resonance occurs are determined by injecting a disturbance. Then, an initial inductor gain coefficient is set, and the system is reapproached to the resonance point. If resonance still occurs, it indicates that the inductor gain coefficient is too small. The inductor gain coefficient is increased in fixed steps until the filter and the power grid no longer resonate when approaching the resonance point. This inductor gain coefficient is then determined as the inductor gain coefficient for this step.

[0092] Step S503: Calculate the product of the effective inductance value and the inductance adjustment ratio to generate the inductance adjustment amount.

[0093] In this process, after determining the inductance adjustment ratio, the processing terminal calculates the product of the effective inductance value and the inductance adjustment ratio to determine the inductance adjustment amount. Thus, when the resonance degree is high, the filter's resonant frequency is moved away from the grid's resonant frequency by adjusting the inductance, thereby ensuring the effect of improving the stability of the voltage regulator's operation.

[0094] Reference Figure 6 The steps to determine the regulator optimization parameters by analyzing the inductance adjustment, effective inductance value, initial proportional gain, and current output current include: Step S600: Obtain historical output current.

[0095] The historical output current refers to the output current of the previous sampling period, which is read from the controller memory of the voltage regulator by the processing terminal. By determining the historical output current, the deviation between the current output current and the historical output current can be determined, thus providing data support for subsequently determining the current deviation value.

[0096] The sampling period refers to the switching cycle of the voltage regulator control system, which is set in advance by the operator. By determining the sampling period, the output current of the previous sampling period can be determined, so as to facilitate the subsequent determination of the current deviation value.

[0097] Step S601: Calculate the difference between the current output current and the historical output current to generate a current deviation value.

[0098] The current deviation value refers to the deviation between the current output current and the output current of the previous sampling period. It is obtained by the processing terminal calculating the difference between the current output current and the historical output current. Under the condition that the historical output current remains unchanged, the larger the current output current, the greater the deviation from the historical output current, and thus the larger the current deviation value, which in turn provides data support for determining the current change rate.

[0099] Step S602: Calculate the quotient of the current deviation value and the preset sampling period to generate the current change rate.

[0100] The rate of change of current refers to the value that measures how quickly the current changes per unit time. It is obtained by the processing terminal calculating the quotient of the current deviation value and the sampling period. Since the voltage drop across the inductor is proportional to the rate of change of the current flowing through it, the current rate of change can be determined to determine the current inductor voltage drop, thus providing data support for subsequent determination of the current inductor voltage drop.

[0101] The sampling period in this step is the same as the sampling period in step S600.

[0102] Step S603: Calculate the product of the current change rate and the inductance adjustment to generate the current inductor voltage drop.

[0103] The current inductor voltage drop refers to the virtual inductor voltage drop obtained by adjusting the inductor, which is calculated by the processing terminal using the product of the current change rate and the inductor adjustment. To avoid resonance between the filter and the power grid, the inductor is adjusted to move the filter's resonant frequency away from the power grid's resonant frequency. This generates an additional voltage drop. When the inductor adjustment remains constant, the greater the current change rate, the greater the voltage drop, thus providing data support for determining the final output voltage.

[0104] Step S604: Calculate the difference between the preset output voltage value and the current inductor voltage drop to generate the final output voltage.

[0105] The final output voltage refers to the voltage equivalent to the adjusted inductance value, obtained by the processing terminal calculating the difference between the output voltage value and the current inductance voltage drop. By determining the final output voltage, the adjusted inductance value can be obtained by adjusting the output voltage, thereby making the filter's resonant frequency far away from the grid's resonant frequency, thus ensuring improved stability of the voltage regulator operation.

[0106] The output voltage value refers to the voltage value output by the voltage regulator under ideal operating conditions, which is obtained by the operator through voltage detection under ideal conditions. By determining the output voltage value, a virtual inductor voltage drop is subtracted from the current inductor voltage drop, and then the adjusted inductor value is obtained by adjusting the final output voltage, thereby ensuring improved stability of the voltage regulator operation.

[0107] Step S605: Analyze the inductance adjustment, effective inductance value, and initial proportional gain to determine the final proportional gain.

[0108] The final proportional gain refers to the proportional gain after correcting the initial proportional gain. It is obtained by the processing terminal after analyzing the inductance adjustment, effective inductance value, and initial proportional gain. The specific method is described in [reference needed]. Figure 7 The steps involve determining the final proportional gain to offset the effects of system response lag when the equivalent inductance increases, thereby ensuring improved stability of the voltage regulator operation.

[0109] Step S606: Correlate the final output voltage and the final proportional gain to generate regulator optimization parameters.

[0110] After determining the final proportional gain, the final output voltage and the final proportional gain are processed to generate the regulator's optimized parameters. By determining these optimized parameters, the inductor can be adjusted to adapt to grid fluctuations when grid fluctuations are significant, effectively preventing resonance between the filter and the grid, and thus ensuring improved stability of the regulator's operation.

[0111] Reference Figure 7 The steps for analyzing the inductor adjustment, effective inductance value, and initial proportional gain to determine the final proportional gain include: Step S700: Calculate the sum of the inductance adjustment and the effective inductance value to generate the equivalent inductance value.

[0112] The equivalent inductance value refers to the inductance value adjusted to avoid resonance between the filter and the power grid. It is obtained by the processing terminal by calculating the sum of the inductance adjustment and the effective inductance value. By determining the equivalent inductance value, the overall inductance value exhibited externally after the inductance adjustment is determined, thus providing data support for subsequently determining the proportional gain adjustment factor.

[0113] Step S701: Calculate the quotient of the equivalent inductance value and the effective inductance value to generate the proportional gain adjustment factor.

[0114] The proportional gain adjustment factor measures the degree of adjustment to the initial proportional gain, and is obtained by calculating the quotient of the equivalent inductance and the effective inductance at the processing terminal. By adjusting the inductance, the resonant frequency of the filter is moved away from the resonant frequency of the power grid, thereby increasing the equivalent inductance. When the equivalent inductance increases, it causes system response lag. Therefore, the initial proportional gain needs to be amplified proportionally to effectively offset the impact of system response lag, thus providing data support for determining the final proportional gain.

[0115] Step S702: Calculate the product of the proportional gain adjustment factor and the initial proportional gain to generate the final proportional gain.

[0116] In this process, after determining the proportional gain adjustment factor, the processing terminal calculates the product of the proportional gain adjustment factor and the initial proportional gain to obtain the final proportional gain. By determining the final proportional gain, the effects of system response lag are effectively offset when the equivalent inductance increases, thereby ensuring improved stability of the voltage regulator operation.

[0117] Based on the same inventive concept, embodiments of this application provide a parameter optimization system for an integrated inductor filter, including: The acquisition module is used to acquire inductor temperature parameters, filter capacitance value, actual voltage value, initial proportional gain, current output current, grid harmonic frequency parameters, and historical output current. Memory used to store programs for optimizing the parameters of integrated inductor filters; The processor and the program in the memory can be loaded and executed by the processor to implement the parameter optimization method of the integrated inductor filter.

[0118] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional modules is used as an example. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device, and unit described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0119] This application provides a computer-readable storage medium storing a computer program that can be loaded by a processor and executed to optimize the parameters of an integrated inductor filter.

[0120] Computer storage media include, for example, USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, optical disks, and other media that can store program code.

[0121] Based on the same inventive concept, embodiments of this application provide a smart terminal, including a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and executed to optimize the parameters of an integrated inductor filter.

[0122] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional modules is used as an example. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device, and unit described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0123] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Any feature disclosed in this specification (including the abstract and drawings) may be replaced by other equivalent or similar features unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is only one example of a series of equivalent or similar features.

Claims

1. A method for optimizing the parameters of an integrated inductor filter, characterized in that, include: Obtain inductor temperature parameters, filter capacitance value, and actual voltage value; The inductor temperature parameters and filter capacitance values ​​are analyzed to determine the filter cutoff frequency and effective inductance value. The actual voltage value, filter cutoff frequency, and effective inductance value are analyzed to determine the inductance adjustment amount; Obtain the initial proportional gain and the current output current; The inductance adjustment, effective inductance value, initial proportional gain, and current output current are analyzed to determine the optimal parameters for the regulator. The voltage regulator is controlled to operate according to the preset parameters of the voltage regulator optimization.

2. The parameter optimization method for the integrated inductor filter according to claim 1, characterized in that, The steps for analyzing inductor temperature parameters and filter capacitance values ​​to determine the filter cutoff frequency and effective inductance value include: Determine the inductor temperature value and inductor temperature coefficient based on the inductor temperature parameters; Calculate the difference between the inductor temperature value and the preset reference temperature value to generate the inductor temperature change value; The effective inductance value is determined by analyzing the inductance temperature change, inductance temperature coefficient, and preset reference inductance value. The filter capacitance and effective inductance values ​​are input into a preset cutoff frequency calculation unit for analysis to determine the filter cutoff frequency.

3. The parameter optimization method for the integrated inductor filter according to claim 1, characterized in that, The steps to determine the inductance adjustment amount by analyzing the actual voltage value, filter cutoff frequency, and effective inductance value include: Calculate the difference between the actual voltage value and the preset reference voltage value to generate a voltage deviation value; Calculate the quotient of the voltage deviation value and the reference voltage value to generate the voltage distortion rate; Determine whether the voltage distortion rate is less than the preset reference distortion rate; If it is less than, then the preset base adjustment amount is defined as the inductance adjustment amount; If it is not less than, then obtain the power grid harmonic frequency parameters; The filter cutoff frequency, effective inductance value, and grid harmonic frequency parameters are analyzed to determine the inductance adjustment amount.

4. The parameter optimization method for the integrated inductor filter according to claim 3, characterized in that, The steps for analyzing the filter cutoff frequency, effective inductance value, and grid harmonic frequency parameters to determine the inductance adjustment include: Determine the harmonic frequency of a single power grid based on the harmonic frequency parameters of the power grid. Calculate the absolute value of the difference between the filter cutoff frequency and the harmonic frequency of the single grid to generate the actual frequency deviation; Calculate the sum of the actual frequency deviation and the preset frequency tolerance value to generate the harmonic frequency deviation; Calculate the reciprocal of the harmonic frequency deviation to generate the single harmonic influence coefficient; Calculate the sum of the single harmonic influence coefficients to generate the resonance avoidance coefficient; The resonant avoidance coefficient and effective inductance value are analyzed to determine the inductance adjustment amount.

5. The parameter optimization method for the integrated inductor filter according to claim 4, characterized in that, The steps for analyzing the resonance avoidance factor and effective inductance value to determine the inductance adjustment amount include: Calculate the difference between the resonance avoidance coefficient and the preset safety avoidance threshold to generate the avoidance deviation value; Calculate the quotient of the avoidance deviation value and the safe avoidance threshold to generate the avoidance ratio value; Calculate the product of the avoidance ratio and the preset inductor gain coefficient to generate the inductor adjustment ratio; Calculate the product of the effective inductance value and the inductance adjustment ratio to generate the inductance adjustment amount.

6. The parameter optimization method for the integrated inductor filter according to claim 1, characterized in that, The steps to determine the regulator optimization parameters by analyzing the inductance adjustment, effective inductance value, initial proportional gain, and current output current include: Obtain historical output current; Calculate the difference between the current output current and the historical output current to generate the current deviation value; Calculate the quotient of the current deviation value and the preset sampling period to generate the current change rate; Calculate the product of the rate of change of current and the inductance adjustment to generate the current inductor voltage drop; The difference between the preset output voltage value and the current inductor voltage drop is calculated to generate the final output voltage; The inductance adjustment, effective inductance value, and initial proportional gain are analyzed to determine the final proportional gain. Correlate the final output voltage and the final proportional gain to generate the regulator optimization parameters.

7. The parameter optimization method for the integrated inductor filter according to claim 6, characterized in that, The steps to determine the final proportional gain by analyzing the inductor adjustment, effective inductance value, and initial proportional gain include: Calculate the sum of the inductance adjustment and the effective inductance value to generate the equivalent inductance value; Calculate the quotient of the equivalent inductance and the effective inductance to generate the proportional gain adjustment factor; Calculate the product of the proportional gain adjustment factor and the initial proportional gain to generate the final proportional gain.

8. A parameter optimization system for an integrated inductor filter, characterized in that, include: The acquisition module is used to acquire inductor temperature parameters, filter capacitance value, actual voltage value, initial proportional gain, and current output current. A memory for storing a program for the parameter optimization method of the integrated inductor filter as described in any one of claims 1 to 7; The processor and the program in the memory can be loaded and executed by the processor to implement the parameter optimization method of the integrated inductor filter as described in any one of claims 1 to 7.

9. A smart terminal, characterized in that, It includes a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and execute the parameter optimization method of the integrated inductor filter as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer program stores a parameter optimization method for an integrated inductor filter as described in any one of claims 1 to 7 that can be loaded by a processor.

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