高頻移相全橋軟開關(guān)的實現(xiàn)

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摘  要：通過對PSFB移相全橋的電路結(jié)構(gòu)及動態(tài)性能分析，得到死區(qū)時間對軟開關(guān)范圍的影響，實現(xiàn)了PSFB的軟開關(guān)控制下的電壓移相調(diào)節(jié)。通過實驗驗證了軟開關(guān)控制的正確性及可行性。

關(guān)鍵詞：變換器;移相控制;軟開關(guān)

中圖分類號：TM46      文獻(xiàn)標(biāo)志碼：A          文章編號：2095-2945（2022）03-0042-03

Abstract： By analyzing the circuit structure and dynamic performance of the PSFB phase-shifting full bridge， the influence of the dead time on the soft switching range is obtained， and the voltage phase-shifting adjustment under the soft switching control of the PSFB is realized. The correctness and feasibility of soft switch control are verified through experiments.

Keywords： converter; phase shift control; soft switching

由于能夠?qū)崿F(xiàn)電氣的隔離、功率密度高、易實現(xiàn)軟開關(guān)降低功率損耗等優(yōu)點，ZVS-PSFB（移相全橋）變換器被廣泛應(yīng)用在各種大功率開關(guān)電源場合[1]。（剩余2203字）