电工技术学报2012，Vol.27Issue(7)：191-197,7.
矩阵变换器输入功率因数可调时的换流控制策略
Commutation Strategies of Matrix Converter with Adjustable Input Power Factor
摘要
Abstract
Voltage-controlled two-step commutation strategies of matrix converter have excellent characteristic such as fast commutation, low switching loss, hard to disturb and easy to control. But short circuit phenomenon will happen when the instantaneous value of two input phase voltages is adjacent. A kind of voltage-controlled commutation method using the intermediate intervals is proposed to solve short circuit in some literatures. This method is only used when input power factor is near to 1. Short circuit ＂will inevitably happen when input power factor is adjustable. An advanced method applied to adjustable input power factor is proposed in this paper based on the commutation process analyzed. By measuring the instantaneous value of input voltages, changing high differential voltage to the middle of the modulation subsequence, the proposed method can avoid short circuit, ensure safe commutation and consummate voltage-controlled commutation strategies. Simulation and experimental results verify the validity and feasibility of the proposed commutation method.关键词
矩阵变换器/电压型换流策略/两步换流/过渡区间/换序法/功率因数可调Key words
Matrix converter/voltage-controlled commutation/two-step commutation/intermediateinterval/changing subsequence method/input power factor adjustable分类
信息技术与安全科学引用本文复制引用
何必,乔鸣忠,林桦,佘宏武,王兴伟..矩阵变换器输入功率因数可调时的换流控制策略[J].电工技术学报,2012,27(7):191-197,7.基金项目
国家自然科学基金 （）
湖北省自然科学基金（2009CDB413）资助项目 （）
