本文提出一種可用於將多個升壓型交直流轉換器輸入做串聯使用，且具有 功率因數校正 (PFC) 功能的控制方法，所採用的單位功因控制方法是以單週期 控制為主，這種控制方式使轉換器只需偵測輸入電流與直流端電壓即可獲得具 單位功因的輸入正弦電流。此簡單的控制策略不需回授輸入電源電壓，可減少 電路元件及簡化控制電路之設計。本文並針對兩負載不同時，提出了平衡穩壓 控制補償策略，最後並且實作兩組各500 W 的串級系統驗證所提理論為可行。

This paper proposes a control method that is suitable to the structure of multiple boost type’s power factor correctors in a series connection. The proposed control idea is based on one-cycle control, which has the advantage of obtaining the unity power factor function without detecting the input source voltage, thus resulting in a simple control circuit. This research also focuses on the compensation scheme used in the unbalanced loads conditions, and a prototype of two serial power factor correctors’ system with 500 W rating for each module is set to verify the control idea.