摘要
变频器进入实用阶段,比发明异步电动机晚了近百年。本文从分析其原因入手,讲述了影响实施变频调速的主要问题。进而介绍了变频同时还必须变压的原理,以及正弦脉宽凋制的具体实施方法。
The inverter attain into the practical stage, later then invent the induction motor near a hundred years. This paper began on analysis its reason, Illustrated the main problem of frequency modulation. Introduced to the principle of variable voltage variable frequency. And illustrated the practice method of sine plus width modulation.
出处
《变频器世界》
2005年第11期129-137,共9页
The World of Inverters
关键词
异步电动机
变频器
开关器件
晶闸管
电力晶体管
绝缘栅双极品体管
整流与逆变
输入功率
输出功率
电磁功率
磁路饱和
正弦脉宽调制
载波
渊制波
调压比
调频比
Induction motor Inverter Switching unit Thyristor Giant transistor Insulated gate bipolar transistor Rectification and inverse transformation Input power Output power Electromagnetic power Magnetic circuit saturation Sine plus width modulation Carrier wave Modulation wave Voltage modulation ratio Frequency modulation ratio
