諧振轉換器傳統上多為電壓模式控制，因而無法迅速反應輸入電壓變化，本論文提出應用於半橋諧振轉換器之新型電流模式控制器，利用非直流阻隔型分壓器將諧振電容電壓回授至電流迴路，並將鋸齒波加入電流迴路以維持穩定度。本論文首先探討半橋諧振轉換器之操作原理，再分析本論文提出之控制器並與現有電流模式控制器比較，最後實作半橋諧振轉換器，額定輸出功率為180 W、輸出電壓為12 V且輸入電壓範圍為350 至 410 V，並由數位信號處理器實現本論文提出之控制器。實驗結果顯示輸出電壓誤差最大為2.7%，而最高系統效率為93.5%，且能迅速反應輸入電壓變化。

Conventionally, resonant converters are voltage mode controlled and are unable to achieve prompt line regulation. In this thesis, a novel current mode controller for a half-bridge resonant converter is proposed which feeds forward the current loop signal through a non-DC-blocking voltage divider. Furthermore, a sawtooth wave is added into the current loop feedback for stability. First, the operating principles and analyses of the half-bridge resonant converter are described in detail. Subsequently, the proposed controller is analyzed and compared to the presented current mode controller. Finally, a prototype of half-bridge resonant converter is implemented with an output voltage of 12 V, rated power of 180 W and input voltage range from 350 V to 410 V. The MCU is adopted to realize the proposed current mode control algorithm. The experimental results reveal that the output voltage regulation is within 2.7% and the highest system efficiency is 93.5%, as well as the proposed controller has the ability to rapidly respond to input voltage variation.

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