基于扰动观测器的电压源型逆变器负载电流前馈控制方法研究  

Disturbance Observer-based Load Current Feedforward Control Method for Voltage Source Inverters

作　　者：王成悦 WANG Chengyue(Sunshine Hydrogen Technology Co.,Ltd.,Hefei 230088,China)

机构地区：[1]阳光氢能科技有限公司,安徽合肥230088

出　　处：《电工技术》2024年第9期32-34,共3页Electric Engineering

摘　　要：传统的电压源型逆变器负载电流前馈控制方法主要依赖前馈控制环路,虽然逆变器电流局部控制效果更佳,但很难满足前馈控制的需求。为此,设计了一种基于扰动观测器的电压源型逆变器负载电流前馈控制方法。该方法通过提取逆变器负载扰动电流的前馈特征,引入扰动电流作为前馈信号,将前馈点作为输出电压,得到了逆变器负载电流的动态变化规律。同时,基于扰动观测器控制电压源型逆变器的电流偏差量,将负载电流作为外部扰动信号来抑制非线性负载的干扰,以满足对负载电流的前馈控制需求。通过仿真实验验证了该方法具有较好的前馈控制效果。The conventional voltage source inverter load current feedforward control method mainly relies on the feedforward control loop,which is far inadequate for feedforward control though can achieve better local control utility.Therefore this paper proposes a disturbance observer-based load current feedforward control method for voltage source inverters.This method extracts feedforward characteristics of the inverter load disturbance current,introduces the disturbance current as the feedforward signal,and uses the feedforward point as the output voltage to obtain the dynamic variation law of the inverter load current.At the same time,based on the disturbance observer,the current deviation of the voltage source inverter is controlled,and the load current is used as an external disturbance signal to suppress the interference of nonlinear loads,in order to meet the requirement of feedforward control.The method has been verified by simulation experiment well-performed in feedforward control.

关 键 词：扰动观测器 电压源型 逆变器 负载电流 前馈控制方法 

分 类 号：TM464[电气工程—电器]