感應馬達滑差估測技術之研究

• Main Author: 羊松文
• Other Authors: 陳功
• Format: Others
• Language: zh-TW
• Published: 1998
• Online Access: http://ndltd.ncl.edu.tw/handle/98654665763581914393

碩士 === 中正理工學院 === 電子工程研究所 === 86 === This thesis primarily investigates the slip estimation methods for indirect flux-oriented control of the induction motors. Besides the classical slip estimation method, a method which estimates slip frequency by stator voltages and stator currents for sensorless control will be presented. Then we make a comparison between this method and classical methods by means of computer simulation and hardware implementation in vector-controlled three-phase induction motor. The simulation results show that good performance for both the slip frequency estimation and speed responses can be achieved by this method. The experiment results show that this method can obtain more accurate slip frequency estimation and better speed control under low speed operation.