摘要
针对大功率交流传动电力机车最高开关频率比较低的特点,研究了其在整个速度范围内的调制策略,在低载波比条件下研究并分析了一种中间60°调制方案,在此基础上分析了在不同调制方法和不同载波比之间切换的原则,实现了异步调制、普通同步调制、中间60°调制以及方波之间的平滑切换,最后通过仿真和实验给予了验证。
In this paper, the modulation strategy in the whole speed range of the high power AC electrical locomotive is researched based on the low switching frequency. In the low frequency- modulation ratio, a contral 60 degree modulation method is analysed and also the transition between different modulation methods or different frequence-modulation ratios. It realizes the smooth transition among asynchronous modulation, synchornous modulation, central 60 degree modulation and square wave modulation. The simulation and experiment resultsal prove the validity.
出处
《电工技术学报》
EI
CSCD
北大核心
2012年第2期173-178,共6页
Transactions of China Electrotechnical Society
关键词
大功率交流电力机车
低开关频率
脉宽调制
中间60°调制
High power AC electrical locomotive, Low switching frequency, PWM, Central 60 degree modulation
