傳統三相雙開關DCM升壓型整流器因簡單性、元件少和成本低的特點適用於低成本的前端PFC轉換器，但由於其操作於DCM模式，在高功率應用中存在明顯的缺點。對此，本文提出一種可以在三相雙開關DCM升壓型整流器中操作於CCM模式的控制方法，使該電路可應用於更高功率的系統中。本論文首先探討三相PFC轉換器的種類與常用的控制方法。之後分析本架構的控制策略與動作原理並說明數位控制處理器控制流程。最後，透過數位訊號處理器研製一規格為輸入相電壓220 V、輸出電壓為800 V及額定功率為10 kW的三相整流器，經過實驗與驗證，在最大輸出功率下，效率為95.6%，PF為0.976。

Conventional three-phase two-switch DCM boost rectifier is suitable for low-cost front-end PFC converters due to their simplicity, low component counts and low cost. However, due to the operation in DCM mode, there are obvious shortcomings in high power applications. Therefore, in this thesis, a control method that can operate the CCM mode in a three-phase two-switch DCM boost rectifier is proposed. Make the converter available for higher power applications.
In this thesis, the types of three-phase PFC converters and common control methods are first discussed. Then the control strategy and operating principle of the converter are analyzed, and the control flow of the digital single processor is explained. Finally, through the digital signal processor, a three-phase rectifier with an input phase voltage of 220 V, an output voltage of 800 V, and a rated power of 10,000 W is developed. From the experimental results, the efficiency can reach 95.6% and the power factor value is 0.956 at the maximum output power.

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