电工技术学报2018，Vol.33Issue(12)：2758-2766,9.DOI:10.19595/j.cnki.1000-6753.tces.160517
一种抑制PWM整流器起动冲击电流的缓给定方法
A Slow Given Method to Suppress the Start-Up Inrush Current of PWM Rectifier
刘博 1贲洪奇 1白银龙1
作者信息
- 1. 哈尔滨工业大学电气工程及自动化学院 哈尔滨 150001
- 折叠
摘要
Abstract
The double closed loop proportional-integral (PI) control with feedforward decoupling is usually used in traditional three-phase voltage-source pulse width modulation (PWM) rectifier. Its digital control is relatively simple and easy to regulate. However, the given value of direct current (DC) bus voltage is a step-function signal during the start-up process from uncontrolled rectifying to PWM rectifying, causing rapidly increase of bus voltage and generating inrush current. As a result, the switching devices withstand large current stress, which affects the security and reliability of system. Therefore, this paper first analyzes the generation mechanism of inrush current based on the mathematical model of PWM rectifier system. A slow given method that can fundamentally suppress the inrush current is then proposed. Finally, the simulation and experimental results verify the proposed method.关键词
PWM整流器/前馈解耦/起动/冲击电流Key words
PWM rectifier/feedforward decoupling/start-up/inrush current分类
信息技术与安全科学引用本文复制引用
刘博,贲洪奇,白银龙..一种抑制PWM整流器起动冲击电流的缓给定方法[J].电工技术学报,2018,33(12):2758-2766,9.
