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Inverter control method based on cascaded repetitive controller and related equipment

A technique for repeating controllers and control methods, applied in the direction of output power conversion devices, AC power input conversion to DC power output, electrical components, etc., can solve the problem of not being able to take into account the system output dynamic performance and steady-state performance at the same time, PI controller Balancing dynamic and steady-state performance problems, etc., to achieve wide system stability, improve waveform quality, and simplify parameter design

Pending Publication Date: 2021-08-06
SUZHOU UNIV
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, a commonly used control method is proportional-integral (PI) control. However, PI controllers have certain difficulties in balancing dynamic and steady-state performance, and cannot take into account the dynamic performance and steady-state performance of the system output at the same time.

Method used

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  • Inverter control method based on cascaded repetitive controller and related equipment
  • Inverter control method based on cascaded repetitive controller and related equipment
  • Inverter control method based on cascaded repetitive controller and related equipment

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Embodiment Construction

[0051] The core of the present application is to provide an inverter control method, device, electronic equipment, and computer-readable storage medium based on a cascaded repetitive controller, so as to simultaneously effectively improve the dynamic performance and steady-state performance of the inverter output.

[0052] In order to describe the technical solutions in the embodiments of the present application more clearly and completely, the technical solutions in the embodiments of the present application will be introduced below in conjunction with the drawings in the embodiments of the present application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0053] When controlling the voltage output of the inverter, the current double-closed-loop control structure based on the PI controller is mostly used, including the ...

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Abstract

The invention discloses an inverter control method and device based on a cascaded repetitive controller, electronic equipment and a computer readable storage medium. The method comprises the following steps: acquiring a reference output voltage and an actual output voltage of an inverter to calculate an actual deviation between the reference output voltage and the actual output voltage; using a repetitive controller to calculate a first control signal based on the actual deviation; summing the first control signal and the actual deviation to obtain a correction deviation; performing PI control based on the correction deviation by using a PI double closed-loop controller cascaded with the repetitive controller to calculate a second control signal; and generating a corresponding pulse signal based on the second control signal to drive a switching tube of the inverter so as to adjust the output voltage of the inverter. According to the invention, the repetitive controller and the PI controller are used for cascade control, the cascade-based repetitive controller effectively balances the dynamic performance and the steady-state performance of the voltage output of the inverter, the parameter design is simple, the system stability is wider, and the waveform quality of the output voltage can be improved.

Description

technical field [0001] The present application relates to the technical field of power electronics, and in particular to an inverter control method, device, electronic equipment and computer-readable storage medium based on a cascaded repetitive controller. Background technique [0002] The inverter is a kind of power equipment commonly used in the power conversion process. In order to effectively control the voltage output of a single-phase inverter, many different control schemes have been proposed. Among them, a commonly used control method is proportional-integral (PI) control. However, PI controllers have certain difficulties in balancing dynamic and steady-state performance, and cannot take into account the dynamic performance and steady-state performance of the system output at the same time. In view of this, providing a solution to the above-mentioned technical problems has become an urgent concern for those skilled in the art. Contents of the invention [0003] ...

Claims

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Application Information

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IPC IPC(8): H02M7/5387H02M1/12
CPCH02M7/53873H02M1/12
Inventor 杨勇杨雅樊明迪何立群肖扬谢门喜陈蓉
Owner SUZHOU UNIV
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