摘要
级联多电平变频调速技术是高压大功率场合广泛应用的一种技术;为了实现调速系统的高性能控制,提出矢量控制和三角载波移相PWM方法相结合的控制策略;阐述了级联多电平矢量控制系统的系统构成、基本原理、级联五电平主电路拓扑结构及其载波移相PWM控制技术;基于MATLAB/Simulink Blocks工具箱的系统仿真结果表明级联多电平逆变器可以成倍提高等效载波频率,降低输出谐波含量,还验证了所提方案的可行性,系统能够获得良好的调速性能。
In order to acquire control for cascaded multilevel speed--regulation system in the widely appliance, a novel control method is introduced based on field--oriented vector control and on triangle carry phrase shifting PWM modulation, including system principle, main circuit topology, control technology. The results of simulation in MATLAB/Simulink Block demonstrate that the cascaded multilevel inverter can improve the equivalent carrier frequency of germination and decrease the content of harmonic wave, and scheme is feasible but also has better performance of application.
出处
《计算机测量与控制》
CSCD
北大核心
2010年第5期1164-1167,共4页
Computer Measurement &Control
基金
徐州师范大学自然科学基金(06XLB17)
关键词
级联多电平
调速
矢量控制
载波移相PWM控制
cascaded multilevel
Speed- regulation
vector-control
carrier phase shifting PWM
