本文旨在研製五相永磁式同步電動機之驅動系統。文中之功率轉換器，採用五相五臂型變頻器驅動五相永磁式同步電動機，而其控制策略以線性霍爾效應元件偵測轉子角位置信號，並利用數位霍爾效應元件的信號作轉速之估測。此外，本文之系統亦藉電流感知器偵測相電流，且以上述的回授信號完成轉速及各相電流閉迴路控制，提高轉速響應、降低電流諧波含量與增進系統效率。
本文採用32位元數位信號處理器TMS320F28069作為控制核心，在驅動系統中，轉速及相電流控制策略皆由軟體完成。本系統之直流鏈輸入電壓為70 V，在轉速800 rpm及電磁轉矩8.16 N-m時，整體效率為84.4 %，電流總諧波失真率為1.47 %，實測結果驗證了本文控制策略的可行性。

This thesis presents the design and implementation of a five-phase permanent-magnet synchronous motor (PMSM) drive system. Five-phase five-leg power inverter is proposed to drive the five-phase PMSM. In addition, linear and digital Hall-effect sensors are used to detect the rotor positions and the rotational speed, while the current sensors detect the immediate current of each phase and transmit to digital signal processor for calculation. Finally, closed-loop speed control strategy is realized in accordance with the feedback signals to obtain speed response with low harmonic distortion as well as raising the overall efficiency of the system.
In this thesis, the 32-bit digital signal processor, TMS320F28069, is adopted as the control core. In driving system, the speed and phase current closed-loop control is conducted by software. The input dc-bus voltage of the system is 70V. At 800 rpm and 8.16 N-m, the overall efficiency and the total harmonic distortion of current are 84.4% and 1.47%, respectively. Experimental results confirm the feasibility of the proposed control strategy.

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