| Summary: | 碩士 === 國立臺灣科技大學 === 電機工程系 === 106 === This thesis investigates the angle control and speed control for a sensorless interior permanent magnet synchronous motor drive system. First, the stator currents are measured. Next, the current slope of each switching state is computed. After that, the rotor position is estimated by using the current slope. Two delta-sigma A/D converters and a high- performance digital signal processor are used to implement the sensorless angle and speed control system. In addition, a low-pass filter and its phase lag compensation are developed to improve the accuracy of the current slope method.
A digital signal processor, TMS320F28379D, is used to execute the angle control, speed control, current control, and rotor position estimation. Experimental results validate the correctness and feasibility of the proposed method.
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