本文探討具容錯功能的交流/直流轉換器應用在永磁同步電動機驅動系統。首先，探討不具功因校正的單相及三相交流/直流轉換器，當整流器有一個二極體開路或短路故障時的容錯控制，以期儘速以備用整流器替代。接著，探討單相及三相直流鏈電容老化故障時的容錯控制，以提升永磁同步電動機驅動系統的可靠度，並使得驅動系統在執行完容錯控制後，迅速回復到原有性能運轉。
此外，本文亦考慮具功因校正的單相交流/直流轉換器容錯。當功因校正電路的功率元件開路或短路故障時，造成原本具功因校正的轉換器失效。本文中探討功率元件開路或短路的容錯控制，使得功率元件損毀的情況下，得以切換至備用功率元件，使具功因校正的單相交流/直流轉換器儘速回復正常運作。
文中使用德州儀器公司所生產的數位信號處理器TMS320F2808，作為控制核心，實現橋式整流器、直流鏈電容，和功率元件故障的容錯功能。實驗結果與理論分析頗為吻合，說明本文所提方法的正確性及可行性。

This thesis proposes the fault-tolerant AC/DC converters that are used for permanent magnet synchronous motor drive systems. First, the fault-tolerant control of single-phase and three-phase AC/DC rectifiers without power factor correction is investigated. When a diode of the rectifier is opened or short-circuited, a backed-up rectifier is used to replace the faulty one. Next, the faults of the single-phase and three-phase DC-link capacitors are studied to improve the reliability of the permanent magnet synchronous motor drive systems. As a result, the fault-tolerant control systems can recover to original speeds as soon as possible.
In addition, the fault-tolerant control of the single-phase AC/DC converter with power factor correction is studied. When one of the power device is opened or short-circuited, the function of power factor correction is failed. To solve this problem, the fault-tolerant control of power device opened or short-circuited is discussed. When one of the power devices is failed, a back-up power device is used to replace the faulty one. As a result, the power factor correction of the single-phase AC/DC converter can be recovered quickly.
A digital signal processor, type TMS320F2808, made by Texas Instruments is used as the control center of the device system to provide the fault tolerance function of a faulty full-bridge rectifier, DC-link capacitor, and an opened or short-circuited power device. Experimental results validate theoretical analysis and show the correctness and feasibility of the proposed methods.

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