一种异步电动机SPWM变频调速的新方案  

A new SPWM speed regulation method of asynchronous motor

作　　者：刘国光[1] 

机构地区：[1]黄石理工学院,435003

出　　处：《机床电器》2005年第2期38-41,共4页Machine Tool Electric Apparatus

摘　　要：本文介绍了一种切线采样方法以产生三相SPWM波,与规则采样法相比,提高了采样精度,而计算的复杂度稍有增加。最后给出了实现对异步电动机的SPWM调速控制的梯形图。This paper introduces a tangent- sampling method to form SPWM waves in an AC speed-regulating system. Comparing with regular sampling,the method increases sampling precision by little increasing in computational complex. Finally the trapezoid graph is presents.

关 键 词：变频调速 SPWM 规则采样 PLC 

分 类 号：TM921.51[电气工程—电力电子与电力传动]