公开(公告)号：WO1995006351A1

公开(公告)日：1995-03-02

申请号：PCT/US1994009254

申请日：1994-08-16

Applicant: REM TECHNOLOGIES, INC.

Inventor： REM TECHNOLOGIES, INC. ,  CHEN, Keming

IPC: H02H07/122

CPC classification number: H02M1/34 ,  H02M1/4216 ,  H02M3/158 ,  H02M7/2173 ,  H02M2001/342 ,  H03K17/08142 ,  H03K17/08148 ,  Y02B70/126 ,  Y02B70/1491

Abstract: A snubber network (32) for a power conversion circuit (30) operated in discontinuous conduction mode includes a snubber capacitor (C), an isolation diode (D2) and an active reset circuit (S2, L, D3). The snubber capacitor (C) connected to the output of the isolation diode (D2), are connected across a main switch (S1) of the power conversion circuit (30). The active reset circuit (S2, L, D3), connected between the input and output of the isolation diode (D2) and the input and output of a boost diode (D1), is responsive to a reset signal for resetting the snubber capacitor within the normal boost cycle of the power conversion circuit (30). Upon receipt of the reset signal, energy in the snubber capacitor (C) is recovered and transferred to the output of the power conversion circuit (30) with turn-off of the main switch (S1). Soft switching is provided for both the main switch (S1) and a snubber switch (S2) within the active reset circuit (S2, L, D3).

Abstract translation: 用于以不连续导通模式操作的功率转换电路（30）的缓冲器网络（32）包括缓冲电容器（C），隔离二极管（D2）和有源复位电路（S2，L，D3）。 连接到隔离二极管（D2）的输出的缓冲电容器（C）跨越电力转换电路（30）的主开关（S1）连接。 连接在隔离二极管（D2）的输入和输出与升压二极管（D1）的输入和输出之间的有源复位电路（S2，L，D3）响应用于复位缓冲电容器的复位信号 电源转换电路（30）的正常升压周期。 在接收到复位信号时，缓冲电容器（C）中的能量被恢复并且通过主开关（S1）的关断传送到电力转换电路（30）的输出端。 在主动复位电路（S2，L，D3）内为主开关（S1）和缓冲开关（S2）提供软开关。