On-Line Tuning of Vector Controlled Induction Motor Drives

• Main Authors: Hsing-Lung Liu, 劉興隆
• Other Authors: Sheng-Ming Yang
• Format: Others
• Language: zh-TW
• Published: 1999
• Online Access: http://ndltd.ncl.edu.tw/handle/58575456877626812221

碩士 === 淡江大學 === 機械工程學系 === 87 === Due to variation of the environmental temperature and the field weakening operation, rotor resistance and magnetizing inductance of an induction motor are not constant when the motor is running. These parameters must be tuned on-line in order to keep the motor running at its nominal performance. Also since the slip gain of an indirect field oriented drive is calculated based upon rotor resistance and magnetizing inductance, therefore a practical but simple parameter tuning scheme based on MRAC theory to tune both the slip gain and magnetizing inductance of field oriented drives is proposed in this project. Two MRAC controllers that utilized motor voltage and torque respectively as their reference are executed in parallel to adjust the slip gain and the magnetizing inductance. Computer simulation and experimental verifications were performed, and the results have demonstrated the effectiveness of the proposed scheme.