公开(公告)号：US20140313627A1

公开(公告)日：2014-10-23

申请号：US14242288

申请日：2014-04-01

Applicant: ABB Research Ltd

Inventor： Tin-Ho LI ,  Ngai-Man Ho ,  Gerardo Escobar ,  Jonathan Bradshaw

IPC: H02M1/34

CPC classification number: H02M1/34 ,  H02M2001/342 ,  Y02B70/1491

Abstract: Exemplary embodiments are directed to an snubber circuit and a power converter having an active circuit. The snubber circuit includes a series connection of a first diode and a first inductor connected between a first interfacing point and a first connection point, a second diode connected between a second connection point and a second interfacing point, a series connection of a third diode and a second inductor between a third interfacing point and the second connection point, a switching device connected between the first connection point and the third interfacing point, and a first capacitor connected between the first connection point and the second connection point. The first, the second, and the third diode are forward-biased along a path between the first interfacing point and the second interfacing point and through the third interfacing point.

Abstract translation: 示例性实施例涉及具有有源电路的缓冲电路和功率转换器。 缓冲电路包括连接在第一接口点和第一连接点之间的第一二极管和第一电感器的串联连接，连接在第二连接点和第二接口点之间的第二二极管，第三二极管的串联连接和 在第三接口点和第二连接点之间的第二电感器，连接在第一连接点和第三接口点之间的开关装置，以及连接在第一连接点和第二连接点之间的第一电容器。 第一，第二和第三二极管沿着第一接口点和第二接口点之间的路径并通过第三接口点被正向偏置。