公开(公告)号：EP1439633A1

公开(公告)日：2004-07-21

申请号：EP02705457.6

申请日：2002-03-22

申请人： KABUSHIKI KAISHA YASKAWA DENKI SEISAKUSHO

发明人： KUME, Tsuneo, c/o KABUSHIKI KAISHA YASKAWA DENKI ,  MAHESH, Swamy, c/o KABUSHIKI KAISHA YASKAWA DENKI

IPC分类号： H02P7/36

CPC分类号： H02P25/188 ,  H02P23/06

摘要： It is an object to provide a winding switching device of a three-phase AC motor having a small size at a low cost in which a time required for switching a winding is shortened and the number of semiconductor switch units is decreased as much as possible.
In a winding switching device of a three-phase AC motor including an AC motor in which a winding having each phase is formed by a plurality of windings and a connecting terminal connecting the windings to each other and both terminals of the winding having the phase are provided on an outside of a motor, winding switching means for properly switching the connecting terminal, and a variable frequency power source for supplying a variable voltage having a variable frequency to the AC motor, the winding switching means is constituted by a plurality of three-phase rectifying means connecting one of ends of the winding having the phase to the variable frequency power source and connecting the other end and the connecting terminal to an input terminal on an AC side of the three-phase rectifying means for each phase, and a semiconductor switch provided to open and close both ends on a DC output side of the three-phase rectifying means.

摘要翻译： 本发明的目的是提供一种具有小成本的三相交流电动机的绕组开关装置，其成本较低，其中绕组切换所需的时间缩短并且半导体开关单元的数量尽可能地减少。 在包括交流电动机的三相AC电动机的绕组开关装置中，其中每个相的绕组由多个绕组形成，并且连接端子将绕组彼此连接，并且绕组的两个端子 具有相位设置在电动机的外部，用于适当地切换连接端子的绕组开关装置和用于向AC电动机提供具有可变频率的可变电压的可变频率电源，所述绕组切换装置由 多个三相整流装置将具有相位的绕组的一端连接到可变频率电源，并将另一端和连接端连接到三相整流装置的AC侧的输入端，用于每相 以及设置成在三相整流装置的DC输出侧开闭两端的半导体开关。