公开(公告)号：US20130221888A1

公开(公告)日：2013-08-29

申请号：US13746718

申请日：2013-01-22

Applicant: FANUC CORPORATION

Inventor： Shinichi HORIKOSHI ,  Hiroyasu SATO ,  Minoru KOBAYASHI

IPC: H02P27/06

CPC classification number: H02P27/06 ,  H02P3/22

Abstract: A motor drive apparatus includes an inverter which has an upper and lower arms each provided with a plurality of semiconductor switching devices and free-wheeling diodes connected in reverse parallel with respective ones of the plurality of semiconductor switching devices, wherein the semiconductor switching devices are controlled on and off to convert DC to AC, a short-circuiting unit which includes a selector switch between motor phase windings of a synchronous motor, the selector switch being opened and closed under the control of a command, and a dynamic braking control unit which, upon reception of a dynamic braking start command, performs control so as to turn on all of the semiconductor switching devices provided in either one of the upper and lower arms and to turn off all of the semiconductor switching devices provided in the other arm, and thereafter controls the short-circuiting unit so that the selector switch is closed.

Abstract translation: 一种电动机驱动装置，具备：逆变器，具有上臂和下臂，每个上臂和下臂都设置有多个半导体开关装置和与所述多个半导体开关装置中的相应的反向并联连接的续流二极管，其中半导体开关装置被控制 一个短路单元，它包括一个在同步电动机的电动机相绕组之间的选择开关，该选择开关在一个指令的控制下被打开和关闭;一个动态制动控制单元， 在接收到动态制动开始指令时，进行控制，以使得设置在上臂和下臂中的任一个中的所有半导体开关装置接通并关闭设置在另一臂中的所有半导体开关装置，之后 控制短路单元，使选择开关闭合。