摘要
随着高温超导储能技术的发展,电流源型变流器(CSC)的储能效率问题将得到解决,多电平CSC将在电力系统中得到广泛应用。因此,对CSC的开关调制策略进行研究具有实际意义。提出了一种适用于CSC的定次谐波消除技术,以5电平CSC为例,建立了特定谐波消除脉宽调制(SHEPWM)消谐方程组,给出了在整个调制比变化范围内的输出电流波形。实验结果证明了在多电平CSC中应用SHEPWM方法是正确可行的。
With the development of superconductive technology of high temperature, multilevel current source converter （CSC） will be widely used in power system.Studying the control strategy of CSC has realistic significance.A selected harmonic elimination pulse width modulation （SHEPWM） technique for multilevel CSC is presented.Taking a single- phase 5-level CSC model based on SHEPWM for example, its equations set of harmonics elimination has been set up. The output current waveform will be altered in order to reduce selected harmonics in the full range of modulation in- dex.Experimental result proves the correctness of theoretical analysis and simulation.
出处
《电力电子技术》
CSCD
北大核心
2013年第4期70-72,共3页
Power Electronics
基金
国家科技支撑计划(2011BAA01B01)~~
关键词
变流器
电流源型
特定谐波消除
converter
current source
selected harmonic elimination
