公开(公告)号：US09543878B2

公开(公告)日：2017-01-10

申请号：US15014288

申请日：2016-02-03

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Tomohiko Sanada ,  Koji Higashikawa ,  Tasuku Isobe ,  Aiko Higuchi ,  Fumiaki Ikeda ,  Kenji Yamada

IPC: H02P1/00 ,  H02P3/00 ,  H02P7/06 ,  H02P25/18 ,  H02P27/04 ,  H02P6/14 ,  H02M1/34

CPC classification number: H02P25/188 ,  H02M1/34 ,  H02P6/14 ,  H02P27/047 ,  H02P29/032

Abstract: A drive unit includes: an inverter; an electric motor that has a first winding connected to an output part of the inverter and a second winding connected to the first winding; a first semiconductor switch that has a first end connected to the first winding and a second end connected to the second winding; a second semiconductor switch that has a first end and a second end connected to the first winding and the first semiconductor switch; and a snubber circuit that is provided between the second end of the first semiconductor switch and the first end of the second semiconductor switch and has a capacitor and a diode.

Abstract translation: 驱动单元包括：逆变器; 电动机，其具有连接到所述逆变器的输出部的第一绕组和连接到所述第一绕组的第二绕组; 第一半导体开关，其具有连接到第一绕组的第一端和连接到第二绕组的第二端; 第二半导体开关，其具有连接到所述第一绕组和所述第一半导体开关的第一端和第二端; 以及缓冲电路，其设置在第一半导体开关的第二端和第二半导体开关的第一端之间，并具有电容器和二极管。