摘要
本文对目前在线运行较多的电压型PWM变频器驱动异步电动机的交流变频调速系统供电电网的谐波情况进行了理论分析和仿真研究 ,给出了电压型PWM变频调速系统谐波分析等值电路参数的计算公式 ,在对系统合理等效的基础上对该系统供电电网的电压、电流进行谐波分析 。
A detail analysis and emulation of the supply net's harmonic condition of the AC adjustable speed system whose asynchronous motor is driven by the voltaged PWM frequency converter that is mostly run on line, is presented in this paper.The formula how to calculate the parameter of the equal circuit of the adjustable speed system is deduced.On the basis of the rational equalization of the system,the voltage and current of the supply net are analyzed to the different frequency harmonic hefts.Emulation validates the correctness of the analysis.
出处
《自动化技术与应用》
2003年第6期65-68,73,共5页
Techniques of Automation and Applications
