Research on Performance Improvement for a Sensorless Switched Reluctance Running Machine Drive System

• Main Authors: chien-hung wang, 王健鴻
• Other Authors: tien-hua liu
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/43120638276744289081

碩士 === 國立臺灣科技大學 === 電機工程系 === 93 === The thesis proposes the rotor estimating technique for a switched reluctance motor with its application in a running machine drive system. In this thesis, first, the structure, principle, and mathematical model of the motor is introduced. Then, the drive systems with and without a rotor position sensor are discussed. The sensorless technique, which does not include any rotor position sensor, is proposed in this thesis by detecting the stator currents of the motor, computing the self inductance from the current slope, and then estimating the rotor position. Finally, a fuzzy PI controller is designed to control the motor speed and improve the tracking ability and load disturbance rejection capability. This thesis uses the switched reluctance motor applying in a running machine system. Based on the proposed sensorless technique, a closed-loop adjustable speed system can be achieved. The simulated results and experimental results validate that the proposed method is feasible and correct.