Pulse energy compensation control method and controller for power supply system

Abstract

The invention provides a power supply system pulse energy compensation control method and a controller, and belongs to the field of power system control, and the method comprises the steps: obtaining the bus instantaneous voltage of a power supply system, and obtaining a first error signal after the difference between the bus instantaneous voltage of the power supply system and the power supply steady-state voltage of the power supply system, obtaining an energy storage link reference voltage after steady state processing; the instantaneous voltage of the energy storage link is obtained, after the difference between the instantaneous voltage and the reference voltage of the energy storage link is obtained, an energy storage link error signal is obtained after processing, and the bus reference power supply current of the power supply system is obtained after the energy storage link error signal is processed; the method comprises the following steps: acquiring instantaneous current of electric equipment and instantaneous current of a compensator, subtracting the instantaneous current of the electric equipment from bus reference power supply current to obtain a current compensation reference value, subtracting the current compensation reference value from the instantaneous current of the compensator to obtain a carrier modulation signal, and performing pulse width modulation on the carrier modulation signal to obtain a switch control signal of a compensator circuit; and controlling the on-off of the compensator circuit according to the switch control signal.

Description

Technical Field

[0001] The present application relates to the field of power system control, and in particular to a power supply system pulsation energy compensation control method and controller. Background Art

[0002] The AC-DC power supply system consists of the front-stage power supply system-power supply and distribution link-back-stage power-consuming equipment. Among them, due to the existence of non-continuous power consumption of the power-consuming equipment itself, switching of the power-consuming equipment operation mode, switching between multiple groups of power-consuming equipment and other working conditions, the power consumption of the power-consuming equipment presents complex pulse load characteristics, presenting a random and agile energy pulsating load in an ultra-wide frequency domain to the AC-DC power supply system.

[0003] The power generation side of the AC-DC power supply system is realized through an AC generator combined with uncontrolled rectification and DC voltage stabilization. As a result, when the peak power consumption of energy pulsating loads approaches the rated capacity of the power supply system, the DC bus voltage that the power supply system uses to supply power to electrical equipment will be affected, resulting in large-scale fluctuations, volatility and oscillations, seriously affecting the power supply quality and system stability.

[0004] With the advancement of power electronics technology, active energy compensation technology has been developed to address the impact of load pulse power on AC-DC power supply systems. Figure 1 The figure shows a schematic diagram of a pulse capability compensation architecture 100 in the prior art, in which an energy compensation function is realized by installing an additional energy compensator 140 at the DC bus 130 port between the power supply system 110 and the power consumption device 120. This technology detects the pulsating component in the power of the power consumption device 120, controls the energy storage link 141 in the energy compensator 140 to perform energy compensation through the active compensation circuit 142, and avoids the impact of severe energy fluctuations on the power supply system. In view of the current application status of AC-DC power supply systems, this solution has the following problems:

[0005] 1) In terms of economy, the existing active energy compensation technology is only for the power-consuming equipment side, and does not work with the generator side of the power supply system to achieve tolerance coordination, resulting in low energy utilization and additional costs;

[0006] 2) In terms of reliability, the existing active energy compensation technology does not involve the power supply characteristics of the AC-DC power supply system, and its compatibility with the power supply system is seriously reduced under some working conditions;

[0007] 3) In terms of compatibility, the single compensation control method in the existing energy active compensation technology is limited in its applicable load pulse characteristics, and the compensation effect is not ideal under the working mode of complex equipment, and it may even become unstable when the mode is continuously sheared;

[0008] 4) In terms of safety, the energy compensator contains an ultra-large capacity energy storage link under a high-voltage working environment, and the existing energy compensation technology does not carry out active control. Summary of the invention

[0009] The purpose of the present application is to provide a power supply system pulsation energy compensation control method and controller to solve or alleviate at least one problem in the background technology.

[0010] On the one hand, the technical solution of the present application is: a power supply system pulsation energy compensation control method, comprising:

[0011] Step 1: Obtain the instantaneous bus voltage of the power supply system, obtain a first error signal by subtracting the instantaneous bus voltage of the power supply system from the steady-state power supply voltage of the power supply system, and obtain the reference voltage of the energy storage link by performing steady-state processing on the first error signal;

[0012] Step 2: Obtain the instantaneous voltage of the energy storage link, make a difference between the instantaneous voltage of the energy storage link and the reference voltage of the energy storage link, obtain an adjusted energy storage link error signal through adaptive bandwidth adjustment processing, and obtain the bus reference power supply current of the power supply system after processing the adjusted energy storage link error signal;

[0013] Step three, obtaining the instantaneous current of the electric device and the instantaneous current of the compensator, subtracting the instantaneous current of the electric device from the bus reference supply current of the power supply system to obtain a current compensation reference value, subtracting the current compensation reference value from the instantaneous current of the compensator to obtain a carrier modulation signal through processing, pulse width modulating the carrier modulation signal to obtain a switch control signal of the compensator circuit, and controlling the opening and closing of the compensator circuit according to the switch control signal;

[0014] By controlling the compensator circuit switch transformation, the instantaneous voltage of the energy storage link pulsates in an orderly manner following the load of the electrical equipment, releasing energy when the pulse current of the electrical equipment arrives, and storing energy when the pulse current of the electrical equipment disappears. At the same time, it adapts to the characteristics of the power supply system in real time to achieve smooth suppression of the power supply current of the power supply system.

[0015] In an optional implementation manner of the present application, the instantaneous voltage of the bus of the power supply system and / or the instantaneous voltage of the energy storage link are collected through a differential circuit.

[0016] In an optional implementation manner of the present application, the instantaneous current of the electrical equipment and / or the instantaneous current of the compensator is collected by a current sampling circuit.

[0017] On the other hand, the technical solution provided by the present application is: a pulsation energy compensation controller for a power supply system, comprising:

[0018] A steady-state reference generation module, comprising a first error generation circuit and a steady-state reference regulator, wherein the first error generation circuit is used to obtain a first error signal by subtracting a bus instantaneous voltage of a power supply system from a steady-state power supply voltage of the power supply system, and the steady-state reference regulator is used to process the first error signal to obtain a reference voltage of an energy storage link;

[0019] An energy storage link voltage regulation module, comprising a second error generating circuit, an adaptive bandwidth regulator and a voltage loop controller, wherein the second error generating circuit is used to obtain a regulation error signal by subtracting the transient voltage of the energy storage link from the reference voltage of the energy storage link, the adaptive bandwidth regulator is used to process the regulation error signal to obtain an regulated energy storage link error signal, and the voltage loop controller is used to process the regulated energy storage link error signal to obtain a bus reference power supply current of the power supply system;

[0020] A compensator circuit adjustment module includes a reference generation circuit, an error generation circuit, a current loop controller and a pulse width modulator, wherein the reference generation circuit is used to subtract the instantaneous current of the electrical equipment from the bus reference supply current of the power supply system to obtain a current compensation reference value, the error generation circuit is used to subtract the current compensation reference value from the compensator transient current to obtain a compensator error signal, the current loop controller is used to process the compensator error signal to obtain a carrier modulation signal, and the pulse width modulator is used to modulate the carrier modulation signal to obtain a switch control signal of the compensator circuit.

[0021] In an optional implementation manner of the present application, the controller further includes:

[0022] A first differential circuit, wherein the first differential circuit is used to collect the instantaneous bus voltage of the power supply system;

[0023] The second differential circuit is used to collect the instantaneous voltage of the energy storage link.

[0024] In an optional implementation manner of the present application, the controller further includes:

[0025] A first high-speed current sampling circuit, wherein the first high-speed current sampling circuit is used to sample the instantaneous current of the electrical equipment;

[0026] A second high-speed current sampling circuit is used to sample the instantaneous current of the compensator.

[0027] In an optional implementation manner of the present application, the steady-state reference regulator is designed as a proportional integrator, and the loop bandwidth of the steady-state reference regulator matches the cycle range corresponding to the switching of the working mode of the electrical equipment.

[0028] In an optional implementation manner of the present application, the voltage loop controller is designed as a proportional and / or anti-saturation integral controller, and the loop bandwidth of the voltage loop controller matches the cycle range corresponding to the load pulsation of the electrical equipment.

[0029] In an optional implementation manner of the present application, the current loop controller is designed as a proportional-integral controller, and the loop bandwidth of the current loop controller is adapted to the transient speed of the load current of the electrical equipment.

[0030] The power supply system pulsation energy compensation method and controller of the present application can fully adapt to the power supply characteristics of the power supply system, significantly improve the system reliability, make full use of the generator pulsation energy tolerance, improve the energy storage utilization rate, effectively reduce the cost of compensation equipment, and achieve controllable energy storage pulsation voltage while being compatible with various load pulse characteristics and mode shear conditions, significantly improving the comprehensive working performance of the power supply system. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solution provided by the present application, the following is a brief introduction to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present application.

[0032] Figure 1 Schematic diagram of energy compensation control architecture in the prior art.

[0033] Figure 2 This is a schematic diagram of the pulsation energy compensation control architecture of the present application.

[0034] Figure 3 A schematic diagram of a mode 1 of a pulsation energy compensation control method according to an embodiment of the present application.

[0035] Figure 4 This is a schematic diagram of mode 2 of a pulsation energy compensation control method according to an embodiment of the present application.

[0036] Figure 5 This is a schematic diagram of mode 3 of a pulsation energy compensation control method according to an embodiment of the present application. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the implementation of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below in conjunction with the drawings in the embodiments of this application.

[0038] Aiming at the AC-DC power supply system carrying energy pulsating loads, in view of the deficiencies in the existing active energy compensation technology, this application provides a power supply system pulsating energy compensation control method and controller, which is used to realize the ideal pulse power smoothing or suppression function in the energy compensation device connected in parallel with the DC bus. This application adopts a new control strategy and compensation improvement measures for the AC-DC power supply system architecture, highly adapts the power supply characteristics of the power supply system and various pulse load characteristics, comprehensively improves the link working performance, and realizes the improvement of technical compatibility, system reliability and solution economy.

[0039] like Figure 2 The figure shows a schematic diagram of the pulsation energy compensation control architecture provided by the present application. In the pulsation energy compensation architecture 200, the power supply system 210 supplies power to the power-consuming device 220 under normal conditions. When multiple groups of power-consuming devices 220 switch modes, the power required fluctuates, and the energy compensator 230 is used to supplement the additional energy required. The energy compensator 230 generally includes an energy storage link 231 composed of multiple groups of large capacitors and a compensator circuit 232 for controlling the energy compensation of the energy storage link 231. The compensator circuit 232 is arranged between the energy storage link 231 and the bus of the power supply system 210. In order to adapt the power supply characteristics of the power supply system 210 and the characteristics of various pulse loads, the pulsation energy compensation control architecture of the present application includes a pulsation energy compensation controller 240. The pulsation energy compensation controller 240 includes a steady-state reference generation module 241, an energy storage link voltage regulation module 242 and a compensator circuit regulation module 243.

[0040] The steady-state reference generation module 241 includes a first error generation circuit 2411 and a steady-state reference regulator 2412. The first error generation circuit 2411 subtracts the bus instantaneous voltage of the power supply system 210 from the bus steady-state voltage of the power supply system 210 to obtain a first error signal, and the steady-state reference regulator 2412 obtains the energy storage link reference voltage based on the first error signal.

[0041] In some embodiments of the present application, the steady-state reference regulator 2412 is designed as a proportional integrator, and the loop bandwidth of the steady-state reference regulator 24212 matches the cycle range corresponding to the switching of the working mode of the electrical device 220.

[0042] The steady-state reference generation module 241 of the present application outputs a constant energy storage link reference voltage when the peak value and valley value of the DC bus voltage fluctuation of the power supply system 210 are consistent; when the peak and valley values ​​of the DC bus voltage fluctuation of the power supply system 210 are different, it outputs a variable energy storage link reference voltage. The pulsating energy compensation controller 240 generally determines that the power supply system 210 has different tolerance levels to the up and down pulsations of the load energy of the electrical equipment 220, and adjusts the steady-state voltage reference value of the energy storage link 231, so that the energy storage link 231 can have a larger charging and discharging redundancy range when facing the sensitive load characteristics of the power supply system, thereby improving the power supply performance of the power supply system. By introducing the bus voltage into the loop, the control process is adapted to the power supply characteristics of the power supply system. When the uncontrolled rectifier link is more sensitive to unloading conditions and the load current change rate changes with the working mode, the peak utilization rate of the energy storage is fully improved to achieve the optimal compensation effect.

[0043] The energy storage link voltage regulation module 242 includes a second error generating circuit 2421, an adaptive bandwidth regulator 2422 and a voltage loop controller 2423. The second error generating circuit 2421 obtains a regulation error signal by subtracting the instantaneous voltage of the energy storage link 231 from the energy storage link reference voltage generated by the steady-state reference generating module 241. The adaptive bandwidth regulator 2422 obtains an regulated energy storage link error signal according to the regulated error signal. The voltage loop controller 2423 obtains the bus reference power supply current of the power supply system 210 using the regulated energy storage link error signal.

[0044] In the present application, the adaptive bandwidth regulator 2422 includes a compensation performance detector, a compensation direction judger, and a regulator. By detecting the capacitor voltage error, i.e., the pulsation value, of the energy storage link 231, the energy compensator 230 reflects the size of the energy compensated, and the compensation direction judger comprehensively and real-time determines the performance state of the energy storage link 231. By identifying that the throughput energy of the energy compensator 230 is close to the peak-to-valley tolerance of the energy storage link, the error signal is processed by the adaptive algorithm set by the regulator, thereby realizing the function of adaptive adjustment of the loop bandwidth. When the compensation energy is close to the upper limit, the voltage loop bandwidth is rapidly amplified, indirectly controlling the capacitor voltage pulsation of the energy storage environment 231 not to exceed the set threshold, and at the same time ensuring that the energy compensator 230 switches smoothly between different compensation working states.

[0045] The voltage loop regulator 2423 is used to accurately and smoothly regulate the direction and amount of energy compensation for the randomly changing load pulse power in the ultra-wide frequency domain, while ensuring that the voltage of the energy storage link operates within the set range, to achieve a safe and controllable ideal compensation effect. The voltage loop controller 2423 is designed as a proportional / anti-saturation integral controller, and its loop bandwidth matches the cycle range corresponding to the load pulsation of the electrical equipment. Through the limiting output and the anti-saturation controller, the power supply current reference signal is output, and the voltage loop is regulated while effectively limiting other adverse conditions such as overload or backflow at the bus current, which is further adapted to the operation of the AC-DC power supply system.

[0046] The compensator circuit adjustment module 243 includes a reference generation circuit 2431, an error generation circuit 2432, a current loop controller 2433 and a pulse width modulator 2434. The reference generation circuit 2431 subtracts the instantaneous current of the electrical device 220 from the bus reference supply current of the power supply system 210 to obtain a current compensation reference signal. The error generation circuit 2432 subtracts the current compensation reference signal from the instantaneous current of the compensator to obtain a compensator error signal. The current loop controller 2433 processes the compensator error signal to obtain a carrier modulation signal. The pulse width modulator 2434 modulates the carrier modulation signal to obtain a switch control signal of the compensator circuit 232. The energy storage environment 231 is controlled by the switch control signal to perform energy compensation on the electrical device 220.

[0047] In the present application, the current loop controller 2433 is designed as a proportional integral controller, and its loop bandwidth is adapted to the current transient speed of the electrical equipment. Through the high-speed current loop controller 2433, the actual compensation current value of the energy compensator 230 is controlled to follow the ideal reference value to ensure that the energy compensation form is consistent with the theoretical design.

[0048] In some embodiments of the present application, the pulsation energy compensation controller 240 also includes a first differential circuit and a second differential circuit, the first differential circuit is used to collect the instantaneous voltage of the bus of the power supply system 210, and the second differential circuit is used to collect the instantaneous voltage of the energy storage link 231.

[0049] In some embodiments of the present application, the pulsating energy compensation controller 240 also includes: a first high-speed current sampling circuit and a second high-speed current sampling circuit, the first high-speed current sampling circuit is used to sample the instantaneous current of the electrical equipment 220, and the second high-speed current sampling circuit is used to sample the instantaneous current of the compensator.

[0050] On this basis, the present application provides a pulsation energy compensation control method for the power supply system architecture, the process comprising:

[0051] Step 1: Obtain the instantaneous bus voltage of the power supply system 210, obtain a first error signal by subtracting the instantaneous bus voltage of the power supply system 210 from the steady-state bus voltage of the power supply system 210, and obtain the energy storage link reference voltage by performing steady-state processing on the first error signal;

[0052] Step 2: Obtain the instantaneous voltage of the energy storage link 231, make a difference between the instantaneous voltage of the energy storage link 231 and the reference voltage of the energy storage link, obtain an adjusted energy storage link error signal through adaptive bandwidth adjustment processing, and obtain the bus reference power supply current of the power supply system 210 after processing the adjusted energy storage link error signal;

[0053] Step three, obtaining the instantaneous current of the electric device 220 and the instantaneous current of the compensator, subtracting the instantaneous current of the electric device 220 from the bus reference supply current of the power supply system 210 to obtain a current compensation reference signal, subtracting the current compensation reference signal from the instantaneous current of the compensator output by the compensator circuit 232, and obtaining a carrier modulation signal after processing, and obtaining a switch control signal of the compensator circuit 232 after pulse width modulation of the carrier modulation signal, and controlling the opening and closing of the compensator circuit 232 according to the switch control signal;

[0054] By controlling the switching transformation of the compensator circuit 232, the instantaneous voltage of the energy storage link 231 follows the orderly pulsation of the load of the electrical equipment 220, releases energy when the load current pulse of the electrical equipment 220 arrives, and stores energy when the load current pulse of the electrical equipment 220 disappears. At the same time, it adapts to the power supply characteristics of the power supply system 220 in real time to achieve a smooth suppression effect of the power supply current of the power supply system.

[0055] In a preferred embodiment of the present application, the instantaneous voltage of the busbar of the power supply system 210 and / or the instantaneous voltage of the energy storage link 231 are collected through a differential circuit.

[0056] In a preferred embodiment of the present application, the instantaneous current of the electrical device 220 and / or the compensator instantaneous current output by the compensator circuit 232 is collected by a high-speed current sampling circuit.

[0057] like Figures 3 to 5 The figure shows a typical embodiment of the power supply system pulsation energy compensation control architecture of the present application, wherein the power supply system 210 has three typical working modes:

[0058] Mode 1: The DC power supply system carries a high-frequency, high-peak-to-average ratio pulse power load. When the pulsating energy compensation control architecture of this application is used for control, the performance is as shown in the attached figure. Figure 3 As shown: the instantaneous voltage of the energy storage link of the energy compensator 230 is controlled to pulsate on the reference value, the throughput energy compensates all load pulsation components, the bus power supply current is smoothly suppressed, and all performance indicators of the power supply system meet the requirements.

[0059] Mode 2: The power supply system carries a large time scale and large pulse width impact load. When the pulsation energy compensation control architecture of this application is used for control, the performance is as shown in the attached figure. Figure 4 As shown: under the condition that the tolerance of the energy storage link of the energy compensator 230 is not enough to smooth all the pulsating energy, the current change rate during loading and unloading is ideally suppressed, and according to the characteristics of the power supply system, more energy is compensated during unloading than during loading. At the same time, the capacitor voltage of the energy storage link is ideally limited to the designed pulsation range, and all performance indicators of the power supply system meet the requirements.

[0060] Mode 3: The power supply system carries a variety of pulse characteristic loads with continuously changing working conditions (high-width duty cycle, high-peak-to-average ratio, large time scale and large pulse width). When the pulsation energy compensation control architecture of this application is used for control, the performance is as shown in the attached figure. Figure 5 As shown: the compensation effect of the energy compensator 230 changes with the load pulse characteristics, meeting the compensation requirements of all working conditions, the compensation mode switching is flexible, the switching speed is fast, and various system performance indicators meet the requirements during the switching process.

[0061] The power supply system pulsation energy compensation method and controller of the present application have the following significant benefits and improvement effects:

[0062] 1) The compensation control method takes improvement measures for the sensitivity of the AC generator-uncontrolled rectifier architecture to load unloading and reverse current, fully adapts to the power supply characteristics of the power supply system, and significantly improves the system reliability;

[0063] 2) The compensation control method introduces the control loop by sampling the DC bus voltage signal, adjusts the compensation benchmark of the energy storage link in real time according to the performance of the power supply system, makes full use of the generator pulsation energy tolerance, improves the energy storage utilization rate, and effectively reduces the cost of compensation equipment;

[0064] 3) The compensation control method utilizes adaptive compensation control technology in combination with a control loop to achieve controllable energy storage pulsating voltage while being compatible with various load pulse characteristics and mode shear conditions, significantly improving the overall working performance of the power supply system.

[0065] This application is suitable for AC-DC power supply systems carrying non-continuous power consumption equipment, improving the bus voltage quality when the load energy pulsates, and is also suitable for the operation of DC power supply systems under various impact loads.

[0066] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A power supply system pulsation energy compensation control method, characterized in that: include: Step 1: Obtain the instantaneous bus voltage of the power supply system, obtain a first error signal by subtracting the instantaneous bus voltage of the power supply system from the steady-state power supply voltage of the power supply system, and obtain the reference voltage of the energy storage link by performing steady-state processing on the first error signal; Step 2: Obtain the instantaneous voltage of the energy storage link, make a difference between the instantaneous voltage of the energy storage link and the reference voltage of the energy storage link, obtain an adjusted energy storage link error signal through adaptive bandwidth adjustment processing, and obtain the bus reference power supply current of the power supply system after processing the adjusted energy storage link error signal; Step three, obtaining the instantaneous current of the electric device and the instantaneous current of the compensator, subtracting the instantaneous current of the electric device from the bus reference supply current of the power supply system to obtain a current compensation reference value, subtracting the current compensation reference value from the instantaneous current of the compensator to obtain a carrier modulation signal through processing, pulse width modulating the carrier modulation signal to obtain a switch control signal of the compensator circuit, and controlling the opening and closing of the compensator circuit according to the switch control signal; By controlling the compensator circuit switch transformation, the instantaneous voltage of the energy storage link pulsates in an orderly manner following the load of the electrical equipment, releasing energy when the pulse current of the electrical equipment arrives, and storing energy when the pulse current of the electrical equipment disappears. At the same time, it adapts to the characteristics of the power supply system in real time to achieve smooth suppression of the power supply current of the power supply system.

2. The power supply system pulsation energy compensation control method according to claim 1, characterized in that: The instantaneous voltage of the busbar of the power supply system and / or the instantaneous voltage of the energy storage link are collected through a differential circuit.

3. The power supply system pulsation energy compensation control method according to claim 1, characterized in that: The instantaneous current of the electrical equipment and / or the instantaneous current of the compensator is collected through a current sampling circuit.

4. A pulsation energy compensation controller for a power supply system, characterized in that: include: A steady-state reference generation module, comprising a first error generation circuit and a steady-state reference regulator, wherein the first error generation circuit is used to obtain a first error signal by subtracting a bus instantaneous voltage of a power supply system from a steady-state power supply voltage of the power supply system, and the steady-state reference regulator is used to process the first error signal to obtain a reference voltage of an energy storage link; An energy storage link voltage regulation module, comprising a second error generating circuit, an adaptive bandwidth regulator and a voltage loop controller, wherein the second error generating circuit is used to obtain a regulation error signal by subtracting the transient voltage of the energy storage link from the reference voltage of the energy storage link, the adaptive bandwidth regulator is used to process the regulation error signal to obtain an regulated energy storage link error signal, and the voltage loop controller is used to process the regulated energy storage link error signal to obtain a bus reference power supply current of the power supply system; A compensator circuit adjustment module includes a reference generation circuit, an error generation circuit, a current loop controller and a pulse width modulator, wherein the reference generation circuit is used to subtract the instantaneous current of the electrical equipment from the bus reference supply current of the power supply system to obtain a current compensation reference value, the error generation circuit is used to subtract the current compensation reference value from the compensator transient current to obtain a compensator error signal, the current loop controller is used to process the compensator error signal to obtain a carrier modulation signal, and the pulse width modulator is used to modulate the carrier modulation signal to obtain a switch control signal of the compensator circuit.

5. The power supply system pulsation energy compensation controller according to claim 4, characterized in that: The controller further comprises: A first differential circuit, wherein the first differential circuit is used to collect the instantaneous bus voltage of the power supply system; The second differential circuit is used to collect the instantaneous voltage of the energy storage link.

6. The power supply system pulsation energy compensation controller according to claim 4, characterized in that: The controller further comprises: A first high-speed current sampling circuit, wherein the first high-speed current sampling circuit is used to sample the instantaneous current of the electrical equipment; A second high-speed current sampling circuit is used to sample the instantaneous current of the compensator.

7. The power supply system pulsation energy compensation controller according to claim 4, characterized in that: The steady-state reference regulator is designed as a proportional integrator, and the loop bandwidth of the steady-state reference regulator matches the cycle range corresponding to the switching of the working mode of the electrical equipment.

8. The power supply system pulsation energy compensation controller according to claim 4, characterized in that: The voltage loop controller is designed as a proportional and / or anti-saturation integral controller, and the loop bandwidth of the voltage loop controller matches the cycle range corresponding to the load pulsation of the electrical equipment.

9. The power supply system pulsation energy compensation controller according to claim 4, characterized in that: The current loop controller is designed as a proportional-integral controller, and the loop bandwidth of the current loop controller is adapted to the load current transient speed of the electrical equipment.

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