摘要
针对非线性负载对逆变器产生的谐波问题,以异步电动机和整流类负载为代表,系统地分析了它们的特性,并建立相应模型,为非线性负载下逆变器的设计与优化提供理论指导。本文对异步电动机,采用一种基于静止直角坐标系的简单、实用的非线性感应电动机模型;对于单向不控整流电路,采用频域分析手段与开关函数相结合进行分析,得出其直流侧与交流侧变量的频域表达式。
This paper proposed a systematic analytical methods to research the characteristics oI nonhnear loads, iocusmg on induction motor and rectifier load for representative to resolve the inverter always faces the harmonic problem caused by nonlinear loads and provided the analytical insight needed for the design and optimization of the inverter system that provide power them. A new simplified and practical nonlinear model of induction machine in stationary reference frame was presen- ted in this dissertation. Based on frequency domain linearity and switching function, the DC and AC side voltage and current of uncontrolled single-phase rectifiers were calculated.
出处
《新技术新工艺》
2011年第9期52-57,共6页
New Technology & New Process
