公开(公告)号：US20140119088A1

公开(公告)日：2014-05-01

申请号：US14141162

申请日：2013-12-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Gouyi CHEN ,  Zhaoxue CUI ,  Tao ZHANG

IPC: H02M7/538

CPC classification number: H02M7/487

Abstract: The present application provides a three-level inverter and power supply equipment, including: a first IGBT, where a collector thereof is connected to a positive direct current bus, an emitter thereof is connected to a first connection point, and the collector and the emitter are bridge-connected to a first freewheeling diode; a second IGBT, where a collector thereof is connected to the first connection point, an emitter thereof is connected to a second connection point, and the collector and the emitter are bridge-connected to a second freewheeling diode; a third IGBT, where a collector thereof is connected to the second connection point, an emitter thereof is connected to a third connection point, and the collector and the emitter are bridge-connected to a third freewheeling diode; a fourth IGBT, where a collector thereof is connected to the third connection point, an emitter thereof is connected to a negative direct current bus.

Abstract translation: 本申请提供了一种三电平逆变器和电源设备，包括：第一IGBT，其集电极连接到正直流母线，其发射极连接到第一连接点，并且集电极和发射极 桥接到第一续流二极管; 第二IGBT，其集电极连接到第一连接点，其发射极连接到第二连接点，并且集电极和发射极桥连接到第二续流二极管; 第三IGBT，其集电极连接到第二连接点，其发射极连接到第三连接点，并且集电极和发射极桥连接到第三续流二极管; 第四IGBT，其集电极连接到第三连接点，其发射极连接到负直流母线。