| Summary: | 碩士 === 國立臺灣科技大學 === 電機工程系 === 94 === This thesis proposes the design and implementation of AC motor speed control systems driven by a matrix converter. First, the structure, characteristics and mathematical model of the permanent magnet synchronous motor and induction motor are discussed. In order to reduce the current ripple generated by the matrix converter, a novel switching strategy has been proposed. As a result, the performance of the drive system at low speed has been improved. All the control loops, including current loop and speed loop are implemented by a 16-bit TMS320LF2407A digital signal processor and a complex programmable logic device XC95288XL. Thus, the hardware circuit is very simple. A fully digital control system is achieved. The theoretical analysis can be validated by experimental results, which show that the proposed method is feasible and the drive system has good transient and load disturbance responses, and a wide adjustable speed range.
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