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A DC chopper circuit control system, method and device

A technology of DC chopping and circuit control, which is applied in the direction of control/regulation system, output power conversion device, DC power input conversion to DC power output, etc., to achieve the effect of reducing errors

Active Publication Date: 2022-04-29
CHINA ELECTRIC POWER RES INST +2
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  • Abstract
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Problems solved by technology

[0003] However, there are also defects in single-cycle control. The existing single-cycle control can have good input immunity to the real-time control of the average value of the switching variable, but because there is no output feedback, it cannot achieve real-time control of load disturbances.

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  • A DC chopper circuit control system, method and device
  • A DC chopper circuit control system, method and device
  • A DC chopper circuit control system, method and device

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Embodiment Construction

[0059] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0060] In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0061] The key point of the technical solution provided by the present invention lies in the novel control loop, and the outer loop is the negative feedback of the reference voltage and the ...

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Abstract

The present invention relates to a DC chopper circuit control system, method and device, comprising: a DC chopper circuit and its corresponding controller; the controller corresponding to the DC chopper circuit is used to , the inductor current and the output voltage control the power switch tube in the DC chopper circuit; the technical solution provided by the present invention, in order to solve the problem that the single-cycle control does not have good anti-load disturbance characteristics, an output feedback link is added to couple the input and output feedback into the control Link, so that it can not only resist input disturbance but also resist load disturbance on the output side, so it has good control performance.

Description

technical field [0001] The invention relates to the field of power electronic converters, in particular to a DC chopper circuit control system, method and device. Background technique [0002] The new energy system has the problem of large-scale fluctuation of the output voltage. Solving this problem puts forward more stringent requirements on the input interference suppression capability of the DC-DC converter control strategy. Usually, the control method of the DC-DC converter adopts the PID control, but due to the nonlinear characteristics of the converter, it is difficult to implement the control accurately with the pure PID method. Therefore, many nonlinear control methods have been proposed and applied in the control strategies of DC-DC converters. Such as single-cycle control, fuzzy control, synovial variable structure control, expert control and neural network control, etc. On the basis of these control strategies, many combinations with PID and even multiple nonlin...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/156
CPCH02M3/156
Inventor 吴鸣盛万兴宋振浩郑楠吕志鹏孙丽敬李蕊徐斌
Owner CHINA ELECTRIC POWER RES INST
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