三相升壓型脈寬調變交/直流轉換器具有高功率因數、低輸入電流總諧波失真與低輸出電壓漣波之優點，因此極適合作為高性能大功率直流輸出電源或應用於交/交流轉換器之前級部分以作為中間直流鏈接介面。因此，本論文主要目標即在針對此種高性能轉換器之設計加以深入研究。首先，針對此轉換器特性加以分析，再進一步探討轉換器主要電感、電容參數大小與其動態響應之關係，由開迴路轉移函數之零交越頻率與電感關係提出一電感值之解析公式。其次，進一步利用本論文首度提出之能量因數指標以獲得電容值之解析公式；藉由上述二解析公式吾人可以快速得到所需之電容與電感參數值。再者，鑑於習用三相升壓型交/直流轉換器之控制器均採用同步旋轉框比例積分控制器，此控制器必須執行座標轉換與反轉換之計算，增加運算複雜度，而定子框比例積分控制器雖不需經過座標轉換，卻會有穩態誤差的產生，因此本論文改採用新近文獻上不需座標轉換且擁有零穩態誤差優點之比例共振控制器，同時結合前饋控制器，可以達到系統之快速動態響應。最後，依據前述結果設計並實體製作一雛形電路，以驗證其參數設計與控制策略之有效性。雛型中控制器則是採用數位訊號處理器TMS320 F2812以數位化方式實現，以簡化硬體電路及便於維護。

Due to the advantages of high power factor, low input current harmonic distortion and low output voltage ripple, three phase boost PWM ac/dc converters are very suitable for high performance high power sources or as a dc-link of an ac/ac converter. Therefore, the goal of this thesis is to further explore a more effective design method of this high performance converter.
Major contributions of this thesis may be summarized as follows. First, the characteristic of this system is comprehensively analyzed. Then the relation between parameter values and dynamic response characteristic of this system is analyzed and an analytic formula of inductor parameter is derived by considering the crossover frequency of the system open-loop transfer function. In addition, an energy factor is proposed, for the first time, in this thesis and another analytic formula of capacitor parameter is derived based on this new factor. It follows that design of the parameters of inductor and capacitor becomes a simple calculation according to the formulas. Second, although a proportional -integral (PI) controller in the synchronous frame can be adopted for the converter to achieve zero steady-state error, the time consuming process of repeated coordinate transform and inverse transform is rather inefficient for the controller. On the other hand, the recently developed proportional-resonant (PR) controller has the advantage of achieving zero steady-state error without coordinate transformations. Hence, the PR control together with another feedforward control is adopted as the controller of the converter system to achieve high performance. At last, a prototype is constructed to verify the effectiveness of the proposed parameter design and the control strategy. The system controller is implemented digitally with a DSP, namely TMS320 F2812, to simplify the hardware circuit and for convenient maintenance.

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