本文主要分為二部分，一為永磁式同步電動機之設計，藉由Ansoft公司出品的Maxwell 2D進行分析及設計，以軟體模擬來達到最佳化之設計，不僅減少人力及成本，亦可準確掌握電動機之性能。其二為研製交流-直流-交流功率轉換器，用於市電側及電動機負載側，使用三相全橋式全控型功因校正器來取代傳統型之二極體整流器，作為永磁式同步電動機側之能源提供，以完成驅動。在市電側方面不僅能改善電流諧波含量及提高功率因數，在負載變動時亦可穩定直流匯流排電壓；在電動機負載側之調頻直流-交流功率轉換器，旨在減少整體能源消耗，且具有正反轉控制之功能，亦完成類似電梯運作模式之曲線且具有能量回收之功能。在永磁式同步電動機側不僅達到調速控制，亦能降低電動機電流諧波含量，以減少脈動轉矩。
文中之系統以數位信號處理器TMS320F28335作為控制核心，市電側電壓電流閉迴路控制與電動機側之轉速電流閉迴路控制皆以軟體完成，減少硬體電路元件並提高可靠度。本系統之輸入市電電壓為三相交流220V/60Hz，直流匯流排電壓穩在340V，輸出以三相永磁式同步電動機加載進行實體測試，電動機驅動負載在1300 rpm，11.3N-m的條件下，由實測結果顯示系統市電電流總諧波失真率為5.88%，電動機側之電流總諧波失真率為3.48％。

This thesis is composed of two parts. One is concerned with the design of permanent-magnet synchronous motor (PMSM), where Maxwell 2D produced by Ansoft company is used to obtain the optimum design with cost reduction as well as the assurance of motor performance. The other is the design of ac-dc-ac power converter which uses three-phase full-controlled full-bridge type power factor corrector in place of traditional diode rectifiers to drive the designed PMSM. The proposed control strategy not only reduces harmonic current and improves power factor in the power supply, but also keeps dc-bus voltage stable under load variation. The PMSM control can rotate in both directions. The proposed variable-frequency power inverter can reduce power dissipation and provide elevator-like performance. In addition, the inverter can also reduce harmonic current and torque pulsation for PMSM in the fully adjustable speed range.
The 32-bit digital signal processor, TMS320F28335, is adopted to implement the control functions of the system. The control of the closed-loop rectifier voltage and current as well as the inverter control of motor speed and current are realized by software to reduce circuit components, and thereby improving reliability. An experimental system is built with input voltage of three-phase 220V, 60 Hz, dc-bus voltage of 340V, and PMSM as output. Experimental results show that under 1300 rpm, 11.3N-m load condition, the total harmonic distortion of current is 5.88% on the supply side, while the total harmonic distortion of current is 3.48% on the load terminal.

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