交流调速的功率控制原理  

Power Control Principle of AC Speed Regulation

作　　者：范润生 

机构地区：[1]山西昆明烟草有限公司,山西太原030012

出　　处：《山西电子技术》2007年第2期54-56,59,共4页Shanxi Electronic Technology

摘　　要：根据电动机最基本的电——机能量转换原理,对交流调速的实质进行了新的分析,并得出交流调速的实质是功率控制的结论。交流调速的所有方法都可归结为电磁功率和损耗功率两种控制方案,电磁功率控制改变的是理想空载转速,调速是高效率的;损耗功率控制增大的是转速降,调速是低效率的。According to the electromechanical energy conversion principle, the essence of AC speed regulation is analyzed thoroughly in this paper; moreover, a creative conclusion that the essence of AC speed regulation lies in the power control is drawn. In fact, all the AC speed regulation approaches can be generalized in two basic strategies： electromagnetic power control and loss power control. The former is to adjust the ideal no-load rotation speed, and thus possesses high efficiency. Whereas, the latter is to regulate the rotation speed depression, and thus possesses low efficiency.

关 键 词：交流调速 功率控制原理 效率 调速分类 

分 类 号：TM921.2[电气工程—电力电子与电力传动]