IGBT串聯用的有源電壓控制技術

摘要：IGBT有源電壓控制技術（Active Voltage Control，簡稱AVC），是在IGBT控制過程中引入多重閉環反饋，使IGBT開通和關斷過程中集電極-發射極電壓VCE的軌跡始終跟隨預先設定的參考信號，實現高壓應用時IGBT器件直接串聯的同步工作和有效均壓。本文介紹了有源電壓控制技術的基本概念，串聯IGBT的實驗波形和相應的損耗計算。 敘詞：IGBT 串聯 驅動 均壓 有源電壓控制 Active Voltage Control Abstract：The so-called IGBT AVC technology is something that during the IGBT control process, various layers of closed loop reaction is introduced to ensure that the pathway of collector-emitter voltage VCE　during the process of On-Off of the IGBT follows the predefined referential signal, to realize synchronous function and effective voltage-sharing when IGBT components are connected in series with the high-voltage application. The article introduces basic concepts of AVC, experimental wave of IGBT connected in series and related loss calculation. Keyword：IGBT, Connection in series, Drive, Voltage sharing, Active voltage control