Development of High Frequency Drive System for Speed Sensorless Induction Spindle Motor

• Main Authors: Yu Jyh-Chyang, 游志強
• Other Authors: Lin Faa-Jeng
• Format: Others
• Language: zh-TW
• Published: 1999
• Online Access: http://ndltd.ncl.edu.tw/handle/68808317042432529986

碩士 === 中原大學 === 電機工程學系 === 87 === The purpose of this thesis is to develop a high frequency drive system for the three-phase induction spindle motor and rotor speed estimation and control algorithms. First, the new type switching and synchronous PWM techniques are developed to reduce the harmonic components of the output voltages and currents of the high-frequency inverter. Moreover, the dead-time compensation technique is developed to increase the voltage utilization of the inverter. The high-frequency inverter is designed and implemented using IGBT switching components. Then the personal computer (PC) is adopted to control the motor drive system with voltage/frequency (v/f ) constant control. On the other hand, since the tachometer and encoder are impossible to couple to the rotor of the spindle motor for rotor speed higher than few ten thousands rpm, the rotor speed and dynamic can not be controlled precisely. Therefore, the development of rotor speed observer is necessary. Furthermore, the speed controller is developed using fuzzy neural network (FNN). The theoretical basis of the proposed controller and estimator are derived in detail, and the effectiveness of the proposed spindle motor drive system is confirmed by the simulation and experimental results.