Feedforward compensation method and feedforward compensation device for boost circuit and storage medium

Abstract

The embodiment of the application discloses a feedforward compensation method and device of a boost circuit and a storage medium, and is used for the technical field of feedforward compensation. In the embodiment of the application, based on a phase angle of a preset phase in a multiphase alternating voltage input by a rectifier circuit, an initial analog pulse wave output by the rectifier circuit is obtained, and an output end of the rectifier circuit is connected with a boost circuit; based on a peak value of the multiphase alternating voltage, the initial analog pulse wave is adjusted to obtain a target analog pulse wave; and the boost circuit is feedforward compensated based on the target analog pulse wave. The target analog pulse wave is used to replace the rectified voltage for feedforward compensation, sampling of an input voltage of the boost circuit is not needed, ripple of a switching stage is avoided, and interference of the feedforward compensation is effectively reduced.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of feedforward compensation, in particular to a feedforward compensation method and device for a boost circuit and a storage medium. BACKGROUND

[0002] The existing feedforward compensation for a boost circuit is to control the duty cycle of a switch tube in the boost circuit through the input voltage of the boost circuit and the output voltage of the boost circuit, so as to achieve an output voltage of the boost circuit greater than an input voltage of the boost circuit.

[0003] In a circuit structure of a three-phase input + rectifier circuit + boost circuit, the voltage sampling point of the input voltage of the boost circuit is located between the rectifier circuit and the boost inductor of the boost circuit, the input voltage of the boost circuit is the voltage rectified by the rectifier circuit, and the voltage sampling point has ripple of a switching stage, which is easy to cause interference in the input voltage of the boost circuit and affect the feedforward compensation of the boost circuit.

[0004] Therefore, there is an urgent need for a feedforward compensation method for a boost circuit to reduce interference in feedforward compensation. SUMMARY

[0005] Embodiments of the present application provide a feedforward compensation method and device for a boost circuit and a storage medium, which effectively reduce interference in feedforward compensation.

[0006] Embodiments of the present application provide a feedforward compensation method for a boost circuit, comprising:

[0007] obtaining an initial analog pulse from a rectifier circuit based on a phase angle of a preset phase in a multi-phase alternating voltage input to the rectifier circuit, the output end of the rectifier circuit being connected to the boost circuit;

[0008] adjusting the initial analog pulse based on a peak value of the multi-phase alternating voltage to obtain a target analog pulse;

[0009] performing feedforward compensation on the boost circuit based on the target analog pulse.

[0010] Further, the step of obtaining the initial analog pulse from the rectifier circuit based on the phase angle of the preset phase in the multi-phase alternating voltage input to the rectifier circuit comprises:

[0011] inputting the multi-phase alternating voltage into a phase-locked loop to obtain the phase angle of the preset phase in the multi-phase alternating voltage;

[0012] obtaining an analog pulse of the preset phase based on the phase angle, and obtaining the initial analog pulse based on the analog pulse of the preset phase.

[0013] Further, before the adjusting the initial analog pulse based on the peak value of the multi-phase alternating voltage to obtain the target analog pulse, the method further comprises:

[0014] phase-shifting the initial analog pulse based on a preset offset angle, and forward tilting the initial analog pulse after phase-shifting to adjust the initial analog pulse after shaping based on the peak value of the multi-phase alternating voltage to obtain the target analog pulse.

[0015] Further, after the phase-shifting the initial analog pulse based on the preset offset angle, the method further comprises:

[0016] obtaining an analog pulse obtained after phase-shifting the initial analog pulse;

[0017] determining a waveform interval of the preset phase;

[0018] obtaining the initial analog pulse after phase-shifting based on the waveform interval to intercept the analog pulse.

[0019] Further, the forward tilting the initial analog pulse after phase-shifting comprises:

[0020] superimposing a preset offset angle on a phase angle of the preset phase in the initial analog pulse after phase-shifting to make the initial analog pulse after phase-shifting forward tilting based on the preset offset angle.

[0021] Further, the adjusting the initial analog pulse based on the peak value of the multi-phase alternating voltage to obtain the target analog pulse comprises:

[0022] multiplying a phase angle of the preset phase in the initial analog pulse by a sine function, and then multiplying by the peak value of the multi-phase alternating voltage to obtain the target analog pulse.

[0023] Further, the forward feeding compensation of the boost conversion circuit based on the target analog pulse comprises:

[0024] subtracting the target analog pulse from an output voltage of the boost circuit to obtain a target control signal;

[0025] controlling conduction or turn-off of a switch tube in the boost circuit based on the target control signal to make the output voltage of the boost circuit greater than the target analog pulse.

[0026] Embodiments of the present application also provide a forward feeding compensation device of a boost circuit, comprising:

[0027] an obtaining unit configured to obtain an initial analog pulse output by a rectifier circuit based on a phase angle of a preset phase in a multi-phase alternating voltage input by the rectifier circuit, wherein an output end of the rectifier circuit is connected to the boost circuit.

[0028] an adjusting unit configured to adjust the initial analog six-pulse wave based on a peak value of the multi-phase alternating voltage to obtain a target analog pulse wave;

[0029] a compensation unit configured to perform feedforward compensation on the boost circuit based on the target analog pulse wave.

[0030] The embodiment of the present application further provides a feedforward compensation device of a boost circuit, comprising:

[0031] a central processing unit, a memory, an input and output interface, a wired or wireless network interface, and a power supply;

[0032] The memory is a transitory storage memory or a persistent storage memory;

[0033] The central processing unit is configured to communicate with the memory, and execute instruction operation in the memory on a control plane function entity to perform the method described above.

[0034] The embodiment of the present application further provides a computer readable storage medium, which comprises instructions, and when the instructions run on a computer, the computer executes the method described above.

[0035] From the above technical solutions, the embodiment of the present application has the following advantages:

[0036] In the embodiment of the present application, based on a phase angle of a preset phase in a multi-phase alternating voltage input by a rectifier circuit, an initial analog pulse wave output by the rectifier circuit is obtained, and an output end of the rectifier circuit is connected to a boost circuit; the initial analog pulse wave is adjusted based on a peak value of the multi-phase alternating voltage to obtain a target analog pulse wave; and the boost circuit is compensated based on the target analog pulse wave. The target analog pulse wave is used to replace the rectified voltage for feedforward compensation, without sampling the input voltage of the boost circuit, avoiding the ripple of the switching stage, and effectively reducing the interference of the feedforward compensation. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0038] Figure 1 A feedforward compensation flowchart of a boost circuit disclosed by the embodiment of the present application is provided;

[0039] Figure 2 Another feedforward compensation flowchart of a boost circuit disclosed by the embodiment of the present application is provided;

[0040] Figure 3 A feedforward compensation circuit diagram of a boost circuit disclosed by an embodiment of the present application;

[0041] Figure 4 A schematic diagram of an initial analog six-pulse wave disclosed by an embodiment of the present application;

[0042] Figure 5 A schematic diagram of an initial analog six-pulse wave after phase shift disclosed by an embodiment of the present application;

[0043] Figure 6 A schematic diagram of an initial analog six-pulse wave after front-end shaping disclosed by an embodiment of the present application;

[0044] Figure 7 A current waveform diagram of a target analog six-pulse wave disclosed by an embodiment of the present application;

[0045] Figure 8 A feedforward compensation device diagram of a boost circuit disclosed by an embodiment of the present application;

[0046] Figure 9 Another feedforward compensation device diagram of a boost circuit disclosed by an embodiment of the present application. DETAILED DESCRIPTION

[0047] In order to enable persons skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by persons skilled in the art without creative labor are within the scope of protection of the present application.

[0048] In the description of the embodiments of the present application, it should be noted that the terms “center”, “upper”, “lower”, “left”, “right”, “vertical”, “horizontal”, “inner”, “outer” and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0049] In the description of the embodiments of the present application, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "linking" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0050] In the prior art, in the circuit structure of three-phase input + rectifier circuit + boost circuit, the voltage sampling point of the input voltage of the boost circuit is located between the rectifier circuit and the boost inductor of the boost circuit, the input voltage of the boost circuit is the voltage after the rectification of the rectifier circuit, and the voltage sampling point has the ripple of the switching stage, which is easy to cause the input voltage of the boost circuit to have interference, and affect the feedforward compensation of the boost circuit. Therefore, the embodiments of the present application provide a feedforward compensation method for a boost circuit, which effectively reduces the interference of the feedforward compensation, as shown in Figure 1 The specific steps are as follows:

[0051] 101. Obtain an initial analog pulse of the output of the rectifier circuit based on the phase angle of a preset phase in the multi-phase alternating voltage input by the rectifier circuit.

[0052] In the embodiments of the present application, the feedforward compensation device of the boost circuit can obtain an initial analog pulse of the output of the rectifier circuit based on the phase angle of a preset phase in the multi-phase alternating voltage input by the rectifier circuit; wherein the rectifier circuit is an uncontrolled rectifier bridge, i.e. a rectifier bridge composed of multiple diodes; the multi-phase alternating voltage can be the alternating voltage input by the power supply, or the alternating voltage input by the generator, which is not limited here, and the multi-phase alternating voltage can be two-phase or three-phase alternating voltage, which is not limited here. The preset phase can be A phase, B phase or C phase in the multi-phase alternating voltage, which is not limited here.

[0053] The output end of the rectifier circuit is connected to the boost circuit, that is, the voltage rectified by the rectifier circuit is the input voltage of the boost circuit. It can be understood that the rectified voltage has one positive half-wave and one negative half-wave in each phase in a cycle; the negative half-wave is turned up by rectification, becoming two positive half-waves. For example, when the multi-phase alternating voltage is a three-phase alternating voltage, the 3 phases have 6 positive half-waves superimposed, forming a six-pulse wave; and when the multi-phase alternating voltage is a two-phase alternating voltage, the 2 phases have 4 positive half-waves superimposed, forming a four-pulse wave. The input voltage of the boost circuit is the pulse wave output by the rectifier circuit after rectification. Among them, the analog pulse wave (two pulse waves) of the preset phase can be obtained through the phase angle of the preset phase, and the analog pulse wave of the other phases can be obtained by phase shifting the analog pulse wave of the preset phase through the phase relationship between the preset phase and the other phases, so as to obtain the initial analog pulse wave output by the rectifier circuit. It can be understood that the number of pulses of the initial analog pulse wave corresponds to the number of phases of the multi-phase alternating voltage input by the rectifier circuit, for example, when the input is a two-phase alternating voltage, the initial analog four-pulse wave is obtained; when the input is a three-phase alternating voltage, the initial analog six-pulse wave is obtained.

[0054] 102. Adjust the initial analog pulse wave based on the peak value of the multi-phase alternating voltage to obtain a target analog pulse wave.

[0055] After obtaining the initial analog pulse wave, the initial analog pulse wave can be adjusted based on the peak value of the multi-phase alternating voltage to obtain a target analog pulse wave, and the number of pulses of the target analog pulse wave is the same as that of the initial analog pulse wave. It can be understood that the peak value of the actual pulse wave obtained after the multi-phase alternating voltage is rectified by the rectifier circuit (i.e. the rectified voltage) is consistent with the size of the peak value of the multi-phase alternating voltage, and the peak value of the target analog pulse wave can be obtained by adjusting the peak value of the initial analog pulse wave based on the peak value of the multi-phase alternating voltage, so that the peak value of the target analog pulse wave is the same as the peak value of the actual rectified pulse wave, and the target analog pulse wave can be more consistent with the actual rectified pulse wave of the rectifier circuit, improving the accuracy of the target analog pulse wave.

[0056] 103. Feedforward compensation is performed on the boost circuit based on the target analog pulse wave.

[0057] After obtaining the target analog pulse wave, feedforward compensation can be performed on the boost circuit based on the target analog pulse wave, that is, the target analog pulse wave can be used as the input voltage of the boost circuit, and the conduction or turn-off of the switch tube in the boost circuit can be controlled through the target analog pulse wave, so that the output voltage of the boost circuit is greater than the input voltage of the boost circuit, that is, the output voltage of the boost circuit is greater than the target analog pulse wave.

[0058] In the embodiments of the present application, based on the phase angle of a preset phase in the multi-phase alternating voltage input to the rectifier circuit, an initial analog pulse output by the rectifier circuit is obtained, and an output end of the rectifier circuit is connected to a boost circuit; the initial analog pulse is adjusted based on a peak value of the multi-phase alternating voltage to obtain a target analog pulse; and the boost circuit is fed forwardly compensated based on the target analog pulse. The target analog pulse is used to replace the rectified voltage for feed forward compensation, without sampling the input voltage of the boost circuit, avoiding the ripple of the switching stage, and effectively reducing the interference of the feed forward compensation.

[0059] Further, the waveform of the input voltage of the existing boost circuit is relatively slow in the rising and falling processes, which easily leads to a low power factor of the boost circuit. Therefore, the embodiments of the present application can make the current waveform corresponding to the target analog pulse be forwardly inclined by phase-shifting and forwardly shaping the initial analog pulse, quickly output the current waveform at commutation, and improve the power factor of the boost circuit. The feed forward compensation process of the boost circuit will be described in detail below with reference to the feed forward compensation circuit diagram of the boost circuit as shown in Figure 2 Figure 3 Figure 3 which includes a rectifier circuit 301, a boost circuit 302, and a buck circuit 303.

[0060] 201, inputting the multi-phase alternating voltage to a phase-locked loop to obtain a phase angle of a preset phase, and determining an initial analog pulse corresponding to the preset phase.

[0061] The feed forward compensation circuit of the boost circuit includes a phase-locked loop, and the phase angle of the preset phase in the multi-phase alternating voltage can be obtained by inputting the multi-phase alternating voltage to the phase-locked loop. Specifically, the line voltage of the multi-phase alternating voltage can be sampled and converted into a phase voltage, and the phase voltage is subjected to Park transformation (abc / dq) to obtain a d-axis voltage Ud and a q-axis voltage Uq. After the d-axis voltage Ud and the q-axis voltage Uq are adjusted by a PI regulator (PLL PI), the frequency ωn of the multi-phase alternating voltage is added and differentiated to obtain the phase angle θ of the preset phase. Then, the analog pulse of the preset phase can be obtained based on the phase angle θ of the preset phase, that is, max (Abs (sin (θ)) is the analog pulse of the preset phase, and the initial analog pulse corresponding to the preset phase can be obtained based on the analog pulse of the preset phase. For example, when the rectifier circuit inputs a three-phase alternating voltage, an initial analog six-pulse can be obtained, and the corresponding initial analog six-pulse is as shown in Figure 4

[0062] ​​​After obtaining the initial simulation pulse, the initial simulation pulse can be phase-shifted based on a preset offset angle, and the initial simulation pulse after phase shifting can be front-end shaped. Wherein, the initial simulation pulse can be shifted to the left or to the right, which is not limited here; then, the initial simulation pulse after phase shifting is front-end shaped. Specifically, the waveform corresponding to the initial simulation pulse after phase shifting can be cut at the corresponding front-end angle, the waveforms at the starting time and the commutation time are replaced with the cut surface, and the waveform of each pulse after cutting is lowered from the highest point of the initial simulation pulse, and the corresponding waveform on the cut surface rises rapidly, that is, the voltage rises rapidly at each commutation time, so that the current waveform corresponding to the target simulation pulse is front-end shaped, and the current waveform is quickly output at commutation, thereby improving the power factor of the boost circuit. Specifically, it includes steps 202 and 203.

[0063] 202. Add a preset offset angle to the phase angle of the preset phase to phase-shift the initial simulation pulse.

[0064] In the embodiments of the present application, a preset offset angle Alfa can be added to the phase angle θ of the preset phase to realize the offset of the phase angle, so that the initial simulation pulse is phase-shifted based on the preset offset angle. Wherein, the preset offset angle can be any angle between negative 30 degrees and positive 30 degrees, which is not limited here; when the preset offset angle is positive, the initial simulation pulse is phase-shifted to the right, and when the preset offset angle is negative, the initial simulation pulse is phase-shifted to the left. As shown in the waveform of the initial simulation six-pulse phase-shifted to the right by 1 / 6π. Figure 5

[0065] It can be understood that when the initial simulation pulse is an initial simulation six-pulse, the calculation formula of the initial simulation six-pulse is max(Abs(sin(θ)), Abs(sin(θ+2 / 3π)), Abs(sin(θ+4 / 3π)); when generating a six-pulse in an interrupt, it is easy to occupy a large amount of interrupt time resources; at this time, the simulation pulse obtained after phase-shifting the initial simulation pulse can be obtained; the waveform interval of the preset phase is determined; the simulation pulse is cut based on the waveform interval to obtain the initial simulation pulse after phase shifting. As shown in the waveform of the initial simulation six-pulse, when the preset phase is A phase, the simulation six-pulse is generated based on A phase, and the waveform interval of A phase is π / 3-2π / 3, at this time, the waveform can be cut in the waveform interval to effectively reduce the interrupt time resources.

[0066] 203. Add a preset offset angle to the phase angle of the preset phase to phase-shift the initial simulation pulse.

[0067] ​After phase-shifting the initial simulated pulse, a preset tilt angle Beta can be superimposed on the phase angle of the preset phase in the phase-shifted initial simulated pulse. This causes the phase-shifted initial simulated pulse to be tilted forward based on the preset tilt angle, thus achieving tilting of the initial simulated pulse. The preset tilt angle can be any angle between -30 degrees and +30 degrees; no specific limitation is made here. For example, when the initial simulated pulse is an initial simulated six-pulse wave, shifting the initial simulated six-pulse wave to the right by 1 / 6π and setting the preset tilt angle to 0.1π results in the waveform of the corresponding simulated six-pulse wave as follows: Figure 6 As shown, the voltage rises rapidly during commutation.

[0068] 204. Multiply the phase angle of the preset phase in the shaped initial simulated pulse by a sine function and then by the peak value of the multiphase AC voltage to obtain the target simulated pulse.

[0069] Next, the phase angle of the preset phase in the shaped initial simulated pulse can be multiplied by a sine function Sin and then by the peak value of the three-phase AC voltage (i.e., the peak value of the rectified pulse waveform) to obtain the target simulated pulse. It can be understood that a preset offset angle can be superimposed on the phase angle of the preset phase, and then a preset tilt angle can be superimposed, multiplied by a sine function, and then multiplied by the peak value of the multi-phase AC voltage to obtain the target simulated six-pulse wave. The peak value of the target simulated pulse wave is the same as the peak value of the actual rectified pulse wave. When the target simulated pulse wave is a target simulated six-pulse wave, the current waveform displayed on the oscilloscope is as follows: Figure 7 As shown, this current waveform is the input current waveform of the boost circuit. In the figure, the horizontal axis represents time, the vertical axis represents current, M 400ms indicates a horizontal scale of 400ms, the time difference between the three cycles of the waveform is 59.6ms, the current difference between the highest point and the zero point is 390A, 100A is the vertical scale, Z 10.0ms is the magnified horizontal scale, 1.25M times / second indicates the sampling rate, that is, the oscilloscope samples 1.25 million points per second, 5M points indicates the storage depth, that is, the number of points collected by the oscilloscope in one acquisition, rising edge trigger, the trigger level voltage value is 285V. Based on the scaling position of 1.54s and the scaling factor of 40X, the waveform magnified 40 times shows that the current rises or falls rapidly during commutation. By simulating a six-pulse wave to perform feedforward compensation on the boost circuit, the power factor of the boost circuit can be effectively improved.

[0070] 205. Controlling the switching transistors in a boost circuit based on target-simulated pulses.

[0071] After the target analog pulse is obtained, the switch tube in the boost circuit can be controlled to be turned on or turned off based on the target analog pulse. Specifically, the target analog pulse can be used to replace the input voltage of the boost circuit, and the output voltage of the boost circuit is subtracted by the target analog pulse to obtain a target control signal. The switch tube in the boost circuit is controlled to be turned on or turned off based on the target control signal, that is, the duty cycle of the switch tube is controlled, so that the output voltage of the boost circuit is greater than the target analog pulse (the input voltage of the boost circuit).

[0072] It can be seen that, in the embodiment of the present application, the phase angle of the preset phase output by the phase-locked loop simulates the target analog pulse (rectified six-pulse), and the target analog pulse replaces the actual rectified voltage in the feedforward compensation, effectively avoiding sampling interference when the actual rectified voltage is sampled. Moreover, the target analog pulse can be obtained by phase-shifting and front-shaping the initial analog pulse, so that the current waveform corresponding to the target analog pulse is front-loaded, the current waveform is quickly output during commutation, and the power factor of the boost circuit is improved.

[0073] The embodiment of the present application also provides a feedforward compensation device of a boost circuit, as shown in Figure 8 , which comprises:

[0074] The acquisition unit 801 is configured to obtain an initial analog pulse output by a rectifier circuit based on the phase angle of a preset phase in the multi-phase alternating voltage input into the rectifier circuit, and the output end of the rectifier circuit is connected to the boost circuit.

[0075] The adjustment unit 802 is configured to adjust the initial analog six-pulse based on the peak value of the multi-phase alternating voltage to obtain a target analog pulse.

[0076] The compensation unit 803 is configured to perform feedforward compensation on the boost circuit based on the target analog pulse.

[0077] The embodiment of the present application also provides a feedforward compensation device 900 of a boost circuit, as shown in Figure 9 , the feedforward compensation device 900 of the boost circuit in the embodiment of the present application can comprise one or more central processing units (CPUs) 901 and a memory 902, and the memory 902 stores one or more application programs or data.

[0078] The memory 902 can be volatile storage or persistent storage. The program stored in the memory 902 can comprise one or more modules, and each module can include a series of instruction operations in the electronic device. Furthermore, the central processing unit 901 can be configured to communicate with the memory 902 and execute the series of instruction operations in the memory 902 on the feedforward compensation device 900 of the boost circuit.

[0079] The feedforward compensation device 900 of the boost circuit can also include one or more power supplies 905, one or more wired or wireless network interfaces 904, one or more input / output interfaces 903, and / or one or more operating systems, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™, etc.

[0080] The central processor 901 can perform operations performed by the first aspect or any of the specific method embodiments of the first aspect, and details are not repeated here.

[0081] Those skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working processes of the above-described system, device and unit can refer to the corresponding processes in the foregoing method embodiments, which are not repeated here.

[0082] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the above-described device embodiments are only schematic, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or other forms.

[0083] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment scheme.

[0084] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit. The above integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0085] The integrated unit, if implemented in the form of a software function unit and sold or used as an independent product, can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application essentially or the part that contributes to the prior art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, read-only memory), a random access memory (RAM, random access memory), a magnetic disk or an optical disk, and various media that can store program codes.

Claims

1. A feedforward compensation method for a boost circuit, characterized by, The method comprises the following steps: obtaining an initial analog pulse based on a phase angle of a preset phase in a multi-phase alternating current voltage input to a rectifier circuit, wherein an output end of the rectifier circuit is connected to a boost circuit; adjusting the initial analog pulse based on a peak value of the multi-phase alternating current voltage to obtain a target analog pulse; performing feedforward compensation on the boost circuit based on the target analog pulse; the step of obtaining the initial analog pulse based on the phase angle of the preset phase in the multi-phase alternating current voltage input to the rectifier circuit comprises the following steps: inputting the multi-phase alternating current voltage into a phase-locked loop to obtain the phase angle of the preset phase in the multi-phase alternating current voltage; obtaining an analog pulse of the preset phase based on the phase angle, and obtaining the initial analog pulse based on the analog pulse of the preset phase; the step of adjusting the initial analog pulse based on the peak value of the multi-phase alternating current voltage to obtain the target analog pulse comprises the following steps: multiplying the phase angle of the preset phase in the initial analog pulse by a sine function, and then multiplying the peak value of the multi-phase alternating current voltage to obtain the target analog pulse; the step of performing feedforward compensation on the boost circuit based on the target analog pulse comprises the following steps: subtracting the target analog pulse from an output voltage of the boost circuit to obtain a target control signal; controlling conduction or turn-off of a switch tube in the boost circuit based on the target control signal, so that the output voltage of the boost circuit is greater than the target analog pulse.

2. The feedforward compensation method of claim 1, wherein, Before the step of adjusting the initial analog pulse based on the peak value of the multi-phase alternating current voltage to obtain the target analog pulse, the method further comprises the following steps: phase-shifting the initial analog pulse based on a preset offset angle, and performing forward tilting shaping on the phase-shifted initial analog pulse, so as to adjust the shaped initial analog pulse based on the peak value of the multi-phase alternating current voltage to obtain the target analog pulse.

3. The feedforward compensation method of claim 2, wherein, After the step of phase-shifting the initial analog pulse based on the preset offset angle, the method further comprises the following steps: obtaining an analog pulse obtained after the initial analog pulse is phase-shifted; determining a waveform interval of the preset phase; cutting the analog pulse based on the waveform interval to obtain the phase-shifted initial analog pulse.

4. The feedforward compensation method of claim 2, wherein, The step of performing forward tilting shaping on the phase-shifted initial analog pulse comprises the following steps: superimposing a preset offset angle on the phase angle of the preset phase in the phase-shifted initial analog pulse, so that the phase-shifted initial analog pulse is forwardly tilted based on the preset offset angle.

5. A feed forward compensation device for a boost circuit, characterized by The method comprises the following steps: an obtaining unit is configured to obtain an initial analog pulse based on a phase angle of a preset phase in a multi-phase alternating current voltage input to a rectifier circuit, wherein an output end of the rectifier circuit is connected to a boost circuit; an adjusting unit is configured to adjust the initial analog pulse based on a peak value of the multi-phase alternating current voltage to obtain a target analog pulse; a compensating unit is configured to perform feedforward compensation on the boost circuit based on the target analog pulse; the obtaining unit is specifically configured to input the multi-phase alternating current voltage into a phase-locked loop to obtain the phase angle of the preset phase in the multi-phase alternating current voltage; obtain an analog pulse of the preset phase based on the phase angle, and obtain the initial analog pulse based on the analog pulse of the preset phase; The adjusting unit is specifically configured to multiply the phase angle of the preset phase in the initial simulation pulse by a sine function, and then multiply the peak value of the multi-phase alternating voltage to obtain the target simulation pulse. The compensating unit is specifically configured to subtract the target simulation pulse from the output voltage of the boost circuit to obtain a target control signal; and control the conduction or non-conduction of a switch tube in the boost circuit based on the target control signal, so that the output voltage of the boost circuit is greater than the target simulation pulse.

6. A feedforward compensation device for a boost circuit, characterized by Comprise: A central processing unit, a memory, an input and output interface, a wired or wireless network interface, and a power supply; The memory is a transitory storage memory or a persistent storage memory; The central processing unit is configured to communicate with the memory, execute instruction operations in the memory on a control plane function entity to perform the method in any one of claims 1 to 4.

7. A computer-readable storage medium, characterized in that, The computer readable storage medium comprises instructions which, when executed on a computer, cause the computer to perform the method of any one of claims 1 to 4.

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