摘要
为了改善级联多电平逆变器输出电压波形质量,提出了一种优化谐波消除技术。通过控制逆变单元开关角度实现级联多电平逆变器谐波控制,在消除低中频谐波成分的同时寻求总谐波畸变率(THD)最小的一组开关角。建立了仿真和实验模型,对该组角度进行仿真和实验验证,其结果验证了优化谐波消除技术的正确性。
The principle and structure of cascade multilevel inverter are introduced.In order to improve the quality of cascade multilevel inverter＇s output voltage waveform, a kind of optimization harmonic elimination control technology is proposed.The harmonic of cascade multilevel inverter is controlled by the switch angles of inyerter unit.The low and middle frequency harmonic compositions are eliminated, and a group of switch angles with low total harmonic distortion rate（THD） is realized.These angles and the accuracy of optimized harmonic elimination are validated.
出处
《电力电子技术》
CSCD
北大核心
2012年第4期60-61,68,共3页
Power Electronics
关键词
逆变器
谐波控制
开关角
总谐波畸变率
inverter
harmonic control
switch angles
total harmonic distortion rate
