A high frequency linear generator simulation power supply system and control method thereof

Abstract

The present invention relates to a high-frequency linear generator simulation power supply system and a control method thereof, the system comprises a transformer part, an impedance simulation part, a control part and an actuator, the transformer part adopts a split transformer to form a DC bus isolation type H-bridge cascade five-level circuit, the output end of the transformer part is connected to the impedance simulation part, the control end of the actuator is connected to the transformer part and the impedance simulation part, and the actuator is also connected to the control part to realize the local control function; the method adopts a segmented asynchronous modulation method, performs multi-condition tests on the output characteristics, calculates its per-unit value and performs curve fitting; selects curves under different frequency division conditions according to the load current size and the segmented interval of the initial given frequency, and accurately controls the output voltage. The present invention can effectively reduce the ripple of the output voltage waveform, improve the output voltage quality and the output frequency accuracy; it has the characteristics of fast response time, no feedback amount and no delayed response.

Description

Technical Field

[0001] The invention belongs to the technical field of power electronics, and in particular to a high-frequency linear generator simulation power supply system and a control method thereof. Background Art

[0002] With the widespread application of linear generators in logistics sorting, CNC machine tools and transportation, the demand for linear generator simulation power supply equipment has begun to emerge. The high-frequency linear generator simulation power supply is designed according to the external characteristics of the linear generator and can simulate any operating conditions of the linear generator. The external characteristics of the linear generator are mainly reflected in the output voltage being proportional to the output frequency, the self-inductance being a fixed value, and the internal resistance changing with the frequency in a specific curve. Obviously, the existing conventional variable frequency power supply cannot meet the requirements of the external characteristics of the linear generator.

[0003] Among the control methods of high-frequency power supplies, the PWM methods of conventional frequency converters are generally divided into synchronous modulation and asynchronous modulation. The synchronous modulation method keeps the carrier ratio unchanged and is mainly used in inverters with fixed output frequencies, because this modulation mode causes the harmonic content of the frequency converter output to increase at low frequencies; the asynchronous modulation method keeps the carrier frequency unchanged, and the modulation ratio changes according to the output frequency. This modulation method cannot take into account the accuracy requirements of high-frequency output and low-frequency output at the same time. The real-time frequency conversion system with a wide frequency range requires not only output accuracy, but also high response speed. When closed-loop control is used, the output accuracy is high, and its adjustment process does not meet the high real-time response requirements; when open-loop control is used, the control logic can be completed instantly, but how to improve the output voltage accuracy in the open-loop control mode is particularly important. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a high-frequency linear generator simulation power supply system with high output accuracy and fast response speed and a control method thereof.

[0005] The present invention solves the technical problem by adopting the following technical solutions:

[0006] A control method for a high-frequency linear generator simulation power supply system, the high-frequency linear generator simulation power supply system comprises a transformer part, an impedance simulation part, a control part and an actuator, the transformer part adopts a splitting transformer to form a DC bus isolation type H-bridge cascade five-level circuit, the output end of the transformer part is connected to the impedance simulation part, the control end of the actuator is connected to the transformer part and the impedance simulation part, the actuator is also connected to the control part to realize a local control function, and the control method comprises the following steps:

[0007] Step 1: The control part automatically divides the frequency online and performs segmented asynchronous modulation according to the specific instructions of the output voltage or output frequency;

[0008] Step 2: According to the segmented asynchronous modulation and the bipolar PWM method, the output characteristics are tested under multiple working conditions in different frequency bands, and the actual output voltage value of each frequency band is obtained according to the given frequency, and its per-unit value is calculated and curve fitting is performed;

[0009] Step 3: Select the fitting curve under different frequency division conditions according to the load current and the segmented interval of the initial given frequency, and finally complete the precise control function of the output voltage under open-loop conditions.

[0010] The actuator is also connected to a host computer to realize a remote control function.

[0011] The transformer part includes a splitting transformer T1, rectifiers FR1 and FR2, DC support capacitors C1 and C2, and inverter H-bridges HB1 and HB2. The impedance simulation part includes an inductor L1, an inductor L2, and a variable resistor R1. The input end of the splitting transformer T1 is connected to a three-phase power supply system. The two sets of output ends of the splitting transformer T1 are respectively connected to the input ends of the rectifiers FR1 and FR2. The DC output ends of the rectifiers FR1 and FR2 are respectively connected to the DC support capacitors C1 and C2. The output ends of the DC support capacitors C1 and C2 are respectively connected to the DC ends of the inverter H-bridges HB1 and HB2. The midpoint of the bridge arm BV11 in the variable H-bridge HB1 is connected to the inductor L1, the output of the inductor L1 is connected to the variable resistor R1, and the output of the variable resistor R1 serves as an output end of the high-frequency linear generator simulation power supply; the midpoint of the bridge arm BV12 in the inverter H-bridge HB1 is connected to the midpoint of the bridge arm BV21 in the inverter H-bridge HB2, the midpoint of the bridge arm BV22 in the inverter H-bridge HB2 is connected to the inductor L2, and the output of the inductor L2 serves as another output end of the high-frequency linear generator simulation power supply, ultimately realizing the five-level output of the main circuit of the high-frequency linear generator simulation power supply; the inductor L1 and the inductor L2 are used to simulate the self-inductance of the linear generator, and the variable resistor R1 is used to simulate the internal resistance of the linear generator.

[0012] The control part includes a CPU controller, and the actuator includes a pulse drive module, a communication auxiliary module and a variable resistance operation unit; the CPU controller is respectively connected to the pulse drive module, the communication auxiliary module and the variable resistance operation unit through connecting terminals for signal connection, the pulse drive module is connected to the driving end of the power switch tube through a wiring, the communication auxiliary module is connected to the host computer through a communication line for local and remote control, and the variable resistance operation unit is connected to the resistance sliding tap through a power line.

[0013] The communication auxiliary module includes an RS232 interface, an RS485 interface, a high-speed optical fiber communication interface and an RS232 and RS485 protocol conversion module.

[0014] The specific implementation method of step 1 is: determine the highest carrier frequency, use this frequency as the reference frequency of 1 division, use multiple division coefficients to switch the entire frequency band, when the variable frequency power supply outputs low frequency, the carrier frequency is divided by N, when the inverter outputs medium frequency, the carrier frequency is divided by N / 2, when the inverter outputs high frequency, the carrier frequency is divided by 1, the control circuit automatically divides the frequency online according to the specific instructions of the output voltage or output frequency, and realizes the segmented asynchronous modulation function; in the modulation process, the bipolar PWM method is used in conjunction.

[0015] The specific implementation method of step 2 is: the data required for the multi-operating condition test of the output characteristics in step 2 includes: the actual output voltage data of 1-division, N / 2-division and N-division when running at no-load, and the actual output voltage data of 1-division, N / 2-division and N-division when running at load.

[0016] In the step 2, when performing curve fitting, curve fitting is performed according to the obtained output voltage per unit value, the order of curve fitting is selected according to actual requirements, and the fitting curve of the actual output voltage is compared with the ideal voltage curve, and the given voltage is corrected by using the inverse fitting curve correction method to finally obtain the fitting curve.

[0017] The specific implementation steps of step 3 are:

[0018] ⑴. Determine whether the sampling current modulus |I| is less than 2% of the rated current. If the sampling current modulus |I| is less than 2% of the rated current, the output voltage given value of the no-load comprehensive correction curve generation device is adopted, otherwise proceed to step ⑵;

[0019] (2) Determine whether the initial given frequency F* is within the range of greater than or equal to 0 and less than or equal to 20%. If it is within the range, use the load 4-frequency division correction curve generating device to output the voltage correction value U, otherwise proceed to step (3);

[0020] ⑶, determine whether the initial given frequency F* is greater than 20% and less than or equal to 50%. If it is within the interval, use the load 2-frequency division correction curve generating device to output the voltage correction value U, otherwise proceed to step ⑷;

[0021] (4) When the given frequency F* is between 50% and 100%, a load-carrying 1-division frequency correction curve generating device is used to output a voltage to a correction value U.

[0022] The advantages and positive effects of the present invention are:

[0023] 1. The present invention adopts a splitting transformer to form a DC bus isolation type H-bridge cascade five-level circuit topology, and compared with the conventional diode midpoint clamped multi-level frequency conversion circuit, the topology has the advantages of structural modularity and no DC bus midpoint voltage offset. Compared with the unipolar modulation method, the bipolar PWM modulation method can double the output PWM frequency, effectively reduce the ripple of the output voltage waveform, and improve the output voltage quality.

[0024] 2. The circuit structure and control circuit adopted by the present invention can completely simulate the relationship between the voltage, self-inductance, internal resistance and output frequency of the linear generator, and keep its output characteristics the same as those of the linear generator.

[0025] 3. The present invention adopts a segmented asynchronous modulation method to make the entire frequency band within a reasonable modulation ratio range. When the variable frequency power supply outputs at a low frequency, a lower carrier frequency is used to improve the low frequency output accuracy and reduce the harmonic content during low frequency output; when the variable frequency power supply outputs at a high frequency, a higher carrier frequency is used to improve the high frequency output accuracy.

[0026] 4. The present invention adopts a multi-operating condition curve fitting method to adjust the given voltage in the control process according to the initial given frequency, thereby solving the problem of low output voltage accuracy caused by electrical components and PWM modulation.

[0027] 5. The open-loop control method adopted by the present invention has a fast response time, does not require feedback, and achieves a delay-free response, thereby solving the weakness that conventional closed-loop regulation cannot respond quickly to a specific real-time frequency conversion system.

[0028] 6. The present invention is reasonably designed. It adopts a DC bus-isolated H-bridge cascade high-frequency analog power supply and proposes an open-loop control method of segmented asynchronous modulation and multi-operating condition curve fitting, which can meet the needs of linear generator simulation tests under any operating condition and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of system connection of the present invention;

[0030] Figure 2 The schematic diagram of the circuit of the high-frequency linear generator simulation power supply system of the present invention;

[0031] Figure 3 It is a relationship diagram among the modulation wave frequency, the modulation ratio and the carrier frequency in the segmented asynchronous modulation method of the present invention;

[0032] Figure 4 is a software control logic diagram of the present invention;

[0033] Figure 5 It is a measured voltage waveform diagram of the present invention under rated frequency conditions.

[0034] In the figure, 1-transformation part, 2-impedance simulation part, 3-control part, 4-actuator, 5-split transformer, 6-rectifier, 7-rectifier, 8-DC support capacitor, 9-DC support capacitor, 10-inverter H-bridge, 11-inverter H-bridge, 12-inductor, 13-inductor, 14-variable resistor, 15-CPU controller, 16-pulse drive module, 17-communication auxiliary module, 18-variable resistance operation unit. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below with reference to the accompanying drawings.

[0036] A high frequency linear generator simulates a power supply system, such as Figure 1 As shown, it includes a transformer part 1, an impedance simulation part 2, a control part 3 and an actuator 4, wherein the actuator 4 is connected to the transformer part 1, the impedance simulation part 2 and the control part 3, and the actuator 4 can also be connected to a host computer for local and remote control.

[0037] The transformer part 1 includes a splitting transformer T1, rectifiers FR1 and FR2, DC support capacitors C1 and C2, and inverter H-bridges HB1 and HB2; this part eventually forms the main power supply loop of the circuit.

[0038] The impedance simulation part 2 includes inductors L1 and L2 and a variable resistor R1; the inductors L1 and L2 are used to simulate the self-inductance of the linear generator, and the variable resistor R1 is used to simulate the internal resistance of the linear generator, which is controlled by the variable resistance operation unit to change along a specific curve.

[0039] The control part 3 includes a CPU controller; the CPU controller mainly completes the functions of data processing, logical operations, and software algorithm implementation.

[0040] The actuator 4 includes a pulse drive module, a communication auxiliary module and a variable resistance operation unit; the pulse drive module is responsible for generating the power switch tube drive signal and returning the fault signal; the communication auxiliary module includes RS232, RS485, high-speed optical fiber communication interface and DP communication module; the variable resistance operation unit completes the change of the internal resistance of the linear motor according to the controller instructions.

[0041] like Figure 2 As shown, the overall connection relationship of the system is:

[0042] The input end of the splitting transformer T1 is connected to the three-phase power supply system, and the output end of the splitting transformer T1 is divided into two branches: A1, B1, C1 and A2, B2, C2. The output ends A1, B1, C1 of the splitting transformer T1 are connected to the input end of the rectifier FR1, and the output ends A2, B2, C2 of the splitting transformer T1 are connected to the input end of the rectifier FR2.

[0043] The DC output end of the rectifier FR1 is connected to the DC support capacitor C1, and the output end of the DC support capacitor C1 is connected to the DC end of the inverter H bridge HB1.

[0044] The DC output end of the rectifier FR2 is connected to the DC support capacitor C2, and the output end of the DC support capacitor C2 is connected to the inverter H bridge HB2.

[0045] The midpoint of the bridge arm BV11 in the inverter H-bridge HB1 is connected to the inductor L1, and the output of the inductor L1 is connected to the variable resistor R1, and the output of the variable resistor R1 serves as an output end of the high-frequency linear generator simulation power supply. The midpoint of the bridge arm BV12 in the inverter H-bridge HB1 is connected to the midpoint of the bridge arm BV21 in the inverter H-bridge HB2, and the midpoint of the bridge arm BV22 in the inverter H-bridge HB2 is connected to the inductor L2, and the output of the inductor L2 serves as another output end of the high-frequency linear generator simulation power supply, ultimately achieving a five-level output of the high-frequency linear generator simulation power supply main circuit.

[0046] The CPU controller 15 is connected to the pulse drive module 16, the communication auxiliary module 17 and the variable resistance operation unit 18 through the connection terminals. The pulse drive module is connected to the driving end of the power switch tube through the wiring, the communication auxiliary module is connected to the host computer through the communication line for local and remote control, and the variable resistance operation unit is connected to the resistance sliding tap through the power line. The CPU controller obtains the control instruction issued by the host computer through the communication auxiliary module, and the CPU controller generates the output voltage setting using the core algorithm, and converts it into a pulse signal and transmits it to the pulse drive module. The pulse drive module is connected to the driving end of the power switch tube in the inverter H bridge HB1 and the inverter H bridge HB2, and transmits the variable resistance command to the variable resistance operation unit. The variable resistance operation unit is connected to the sliding tap of the variable resistor, and finally realizes the simulation function of the linear generator.

[0047] Based on the above-mentioned high-frequency linear generator simulated power supply system, the present invention also provides a high-frequency linear generator simulated power supply system control method, which is implemented by adopting a comprehensive means of segmented asynchronous modulation in the full frequency range and multi-operating condition curve fitting under open-loop control conditions, and specifically includes the following steps:

[0048] Step 1: The CPU controller automatically divides the frequency online and performs segmented asynchronous modulation according to specific instructions of the output voltage or output frequency.

[0049] In this step, first determine the highest carrier frequency f △ , using this frequency as the reference frequency of 1 division, the entire frequency band uses multiple division coefficients to switch. When the variable frequency power supply outputs low frequency, the carrier frequency is divided by N. When the inverter outputs medium frequency, the carrier frequency is divided by N / 2. When the inverter outputs high frequency, the carrier frequency is divided by 1. The controller automatically divides the frequency online according to the specific instructions of the output voltage or output frequency to achieve segmented asynchronous modulation, and ultimately makes the modulation ratio of the entire frequency band within a reasonable range, which can maximize the output voltage accuracy and stability. The use of bipolar PWM method in the modulation process can make the final output PWM frequency of the high-frequency linear generator simulation power supply reach the highest carrier frequency f △ It is 4 times of that of the conventional linear generator, meeting the requirements of high-frequency linear generator simulation power supply for output high frequency and high dynamic response.

[0050] Next, with f △ = 20kHz is the base carrier frequency. 1 division means asynchronous modulation uses a carrier frequency of 20kHz, 2 division means asynchronous modulation uses a carrier frequency of 10kHz, and 4 division means asynchronous modulation uses a carrier frequency of 5kHz. The relationship between the modulation wave frequency, modulation ratio, and carrier frequency is shown in the figure below: Figure 3 shown.

[0051] The output frequency of the high-frequency linear generator simulated power supply is calibrated at 2kHz as 100%. When the output frequency of the device is lower than 20%, the carrier frequency is 5kHz, the modulation ratio is above 12.5, and the output PWM frequency of the high-frequency linear generator simulated power supply is 20kHz; when the output frequency of the device is between 20% and 50%, the carrier frequency is 10kHz, the modulation ratio varies between 25 and 10, and the output PWM frequency of the high-frequency linear generator simulated power supply is 40kHz; when the output frequency of the device is higher than 50%, the carrier frequency is 20kHz, the modulation ratio varies between 20 and 10, and the output PWM frequency of the high-frequency linear generator simulated power supply is 80kHz; thereby making the modulation ratio of the entire frequency band within a reasonable range, and obtaining a higher equivalent PWM output frequency, effectively reducing the ripple of the output voltage waveform, and improving the output voltage accuracy.

[0052] Step 2: Based on the segmented asynchronous modulation and the bipolar PWM method, the output characteristics are tested under multiple working conditions in different frequency bands. The actual output voltage value of each frequency band is obtained according to the given frequency, and its per-unit value is calculated and curve fitting is performed.

[0053] According to the frequency division method of segmented asynchronous modulation, the output characteristics are tested under multiple working conditions in different frequency bands. The data to be tested include the actual output voltage data of 1-division, N / 2-division and N-division during no-load operation, and the actual output voltage data of 1-division, N / 2-division and N-division during load operation. Finally, curve fitting is performed based on the obtained output voltage per unit value. The order of curve fitting determines the accuracy of curve fitting. The order of curve fitting can be selected according to actual requirements. The fitting curve of the actual output voltage is compared with the ideal voltage curve, and the inverse fitting curve is corrected to correct the given voltage so that the final output voltage of the device is basically consistent with the ideal voltage to meet the control requirements.

[0054] While generating the correction curve in this step, there is a specific curve relationship between the internal resistance of the linear generator and the given frequency. The CPU controller calculates the internal resistance value based on the given frequency information, and controls the variable resistance operation unit to change the resistance value of the variable resistor R1 in the circuit system in real time, thereby simulating the internal resistance characteristics of the linear generator.

[0055] Step 3: Select the fitting curve under different frequency division conditions according to the load current and the segmented interval of the initial given frequency, and finally complete the precise control function of the output voltage under open-loop conditions.

[0056] This step is based on the judgment of the sampled current. When the sampled current modulus |I| is less than 2% of the rated current, the no-load comprehensive correction curve generation device is used to output the given voltage value; when the sampled current modulus |I| is not less than 2% of the rated current, a specific curve generation device is selected to output the voltage correction value U according to the frequency range of the initial given frequency F*.

[0057] The specific implementation steps of this step are as follows Figure 4 As shown, the following steps are included:

[0058] ⑴. Determine whether the sampling current modulus |I| is less than 2% of the rated current. If the sampling current modulus |I| is less than 2% of the rated current, the output voltage given value of the no-load comprehensive correction curve generation device is adopted, otherwise proceed to step ⑵;

[0059] (2) Determine whether the initial given frequency F* is within the range of greater than or equal to 0 and less than or equal to 20%. If it is within the range, use the load 4-frequency division correction curve generating device to output the voltage correction value U, otherwise proceed to step (3);

[0060] ⑶, determine whether the initial given frequency F* is greater than 20% and less than or equal to 50%. If it is within the interval, use the load 2-frequency division correction curve generating device to output the voltage correction value U, otherwise proceed to step ⑷;

[0061] (4) When the given frequency F* is between 50% and 100%, a load-carrying 1-division frequency correction curve generating device is used to output a voltage to a correction value U.

[0062] The applicant designs a high-frequency linear generator simulating a power supply system according to the present invention, and the output voltage waveform under the condition of an output frequency of 2kHz is as follows: Figure 5 As shown. Among them: ① Channel sinusoidal voltage waveform is Figure 2 Output voltage U out ;② Channel five-level PWM waveform is Figure 2 Output voltage U o ,③The channel current sinusoidal waveform is Figure 2 Output current I o .

[0063] It can be seen from the figure that the voltage output fully meets the expected requirements, verifying the reliability of the present invention.

[0064] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive. Therefore, the present invention includes but is not limited to the embodiments described in the specific implementation manner. Any other implementation manners derived by those skilled in the art based on the technical solution of the present invention also fall within the scope of protection of the present invention.

Claims

1. A control method for a high-frequency linear generator simulation power supply system, the high-frequency linear generator simulation power supply system comprises a transformer part, an impedance simulation part, a control part and an actuator, the transformer part adopts a splitting transformer to form a DC bus isolation type H-bridge cascade five-level circuit, the output end of the transformer part is connected to the impedance simulation part, the control end of the actuator is connected to the transformer part and the impedance simulation part, and the actuator is also connected to the control part to realize a local control function, characterized in that: The control method comprises the following steps: Step 1: The control part automatically divides the frequency online and performs segmented asynchronous modulation according to the specific instructions of the output voltage or output frequency; Step 2: According to the segmented asynchronous modulation and the bipolar PWM method, the output characteristics are tested under multiple working conditions in different frequency bands, and the actual output voltage value of each frequency band is obtained according to the given frequency, and its per-unit value is calculated and curve fitting is performed; Step 3: Select the fitting curve under different frequency division conditions according to the load current and the segmented interval of the initial given frequency, and finally complete the precise control function of the output voltage under open-loop conditions.

2. The control method of a high-frequency linear generator simulated power supply system according to claim 1, characterized in that: The actuator is also connected to a host computer to realize a remote control function.

3. The control method of a high-frequency linear generator simulated power supply system according to claim 1, characterized in that: The transformer part includes a splitting transformer T1, rectifiers FR1 and FR2, DC support capacitors C1 and C2, and inverter H-bridges HB1 and HB2. The impedance simulation part includes an inductor L1, an inductor L2, and a variable resistor R1. The input end of the splitting transformer T1 is connected to a three-phase power supply system. The two sets of output ends of the splitting transformer T1 are respectively connected to the input ends of the rectifiers FR1 and FR2. The DC output ends of the rectifiers FR1 and FR2 are respectively connected to the DC support capacitors C1 and C2. The output ends of the DC support capacitors C1 and C2 are respectively connected to the DC ends of the inverter H-bridges HB1 and HB2. The midpoint of the bridge arm BV11 in the variable H-bridge HB1 is connected to the inductor L1, the output of the inductor L1 is connected to the variable resistor R1, and the output of the variable resistor R1 serves as an output end of the high-frequency linear generator simulation power supply; the midpoint of the bridge arm BV12 in the inverter H-bridge HB1 is connected to the midpoint of the bridge arm BV21 in the inverter H-bridge HB2, the midpoint of the bridge arm BV22 in the inverter H-bridge HB2 is connected to the inductor L2, and the output of the inductor L2 serves as another output end of the high-frequency linear generator simulation power supply, ultimately realizing the five-level output of the main circuit of the high-frequency linear generator simulation power supply; the inductor L1 and the inductor L2 are used to simulate the self-inductance of the linear generator, and the variable resistor R1 is used to simulate the internal resistance of the linear generator.

4. The control method of a high-frequency linear generator simulated power supply system according to claim 1, characterized in that: The control part includes a CPU controller, and the actuator includes a pulse drive module, a communication auxiliary module and a variable resistance operation unit; the CPU controller is respectively connected to the pulse drive module, the communication auxiliary module and the variable resistance operation unit through connecting terminals for signal connection, the pulse drive module is connected to the driving end of the power switch tube through a wiring, the communication auxiliary module is connected to the host computer through a communication line for local and remote control, and the variable resistance operation unit is connected to the resistance sliding tap through a power line.

5. The control method of a high-frequency linear generator simulated power supply system according to claim 4, characterized in that: The communication auxiliary module includes an RS232 interface, an RS485 interface, a high-speed optical fiber communication interface and an RS232 and RS485 protocol conversion module.

6. A control method for a high-frequency linear generator simulated power supply system according to any one of claims 1 to 5, characterized in that: The specific implementation method of step 1 is: determine the highest carrier frequency, use this frequency as the reference frequency of 1 division, use multiple division coefficients to switch the entire frequency band, when the variable frequency power supply outputs low frequency, the carrier frequency is divided by N, when the inverter outputs medium frequency, the carrier frequency is divided by N / 2, when the inverter outputs high frequency, the carrier frequency is divided by 1, the control circuit automatically divides the frequency online according to the specific instructions of the output voltage or output frequency, and realizes the segmented asynchronous modulation function; in the modulation process, the bipolar PWM method is used in conjunction.

7. A control method for a high-frequency linear generator simulated power supply system according to any one of claims 1 to 5, characterized in that: The specific implementation method of step 2 is: the data required for the multi-operating condition test of the output characteristics in step 2 includes: the actual output voltage data of 1-division, N / 2-division and N-division when running at no-load, and the actual output voltage data of 1-division, N / 2-division and N-division when running at load.

8. A control method for a high-frequency linear generator simulated power supply system according to any one of claims 1 to 5, characterized in that: In the step 2, when performing curve fitting, curve fitting is performed according to the obtained output voltage per unit value, the order of curve fitting is selected according to actual requirements, and the fitting curve of the actual output voltage is compared with the ideal voltage curve, and the given voltage is corrected by using the inverse fitting curve correction method to finally obtain the fitting curve.

9. A control method for a high-frequency linear generator simulated power supply system according to any one of claims 1 to 5, characterized in that: The specific implementation steps of step 3 are: ⑴. Determine whether the sampling current modulus |I| is less than 2% of the rated current. If the sampling current modulus |I| is less than 2% of the rated current, the output voltage given value of the no-load comprehensive correction curve generation device is adopted, otherwise proceed to step ⑵; (2) Determine whether the initial given frequency F* is within the range of greater than or equal to 0 and less than or equal to 20%. If it is within the range, use the load 4-frequency division correction curve generating device to output the voltage correction value U, otherwise proceed to step (3); ⑶, determine whether the initial given frequency F* is greater than 20% and less than or equal to 50%. If it is within the interval, use the load 2-frequency division correction curve generating device to output the voltage correction value U, otherwise proceed to step ⑷; (4) When the given frequency F* is between 50% and 100%, a load-carrying 1-division frequency correction curve generating device is used to output a voltage to a correction value U.

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