高精度直流测速发电机输出交流量中的2p次和4p次谐波分析

Analysis of the 2pth and the 4pth Harmonic Wave of Output AC Voltage for High Precision DC Speed Indicating Generator

本文对直流测速发电机精度测试中输出电压纹波进行了理论分析,并通过对由于电枢偏心和铁心呈椭圆引起的纹波进行数学分析,证明电枢偏心将产生2p次谐波,电枢铁心呈椭圆将产生4p次谐波。文章最后对减少输出电压纹波的方法进行了探讨。

The paper analyses the ripple of output voltage in precision measuring for DC speed indicating generator. It is proved that eccentric armature can produce the 2pth harmonic wave and elliptic iron core can produce the 4pth harmonic wave through mathematical analysis of ripple caused by eccentric armature and elliptic iron core. In the end, the method to reduce the ripple of output voltage is discussed.