公开(公告)号：US20200076333A1

公开(公告)日：2020-03-05

申请号：US16121130

申请日：2018-09-04

Applicant: ABB Schweiz AG

Inventor： Robert F. McElveen, JR. ,  Jukka Jarvinen

IPC: H02P1/02 ,  H02P25/18 ,  F04D25/06

Abstract: Unique systems, methods, techniques and apparatuses of motor starters are disclosed. One exemplary embodiment is a synchronous machine including a plurality of stator phase windings, a rotor, a motor starter, and a controller. The motor starter includes a plurality of wye semiconductor switches and a plurality of delta semiconductor switches. The controller is structured to operate the plurality of wye semiconductor switches and the plurality of delta semiconductor switches so as to couple the plurality of stator phase windings in a delta configuration while an angular speed of the rotor is less than a synchronous speed, and structured to operate the plurality of wye semiconductor switches and the plurality of delta semiconductor switches so as to couple the plurality of stator phase windings in a wye configuration in response to the angular speed of the rotor being equal to the synchronous speed.

公开(公告)号：US10931212B2

公开(公告)日：2021-02-23

申请号：US16121130

申请日：2018-09-04

Applicant: ABB Schweiz AG

Inventor： Robert F. McElveen, Jr. ,  Jukka Jarvinen

IPC: H02P1/02 ,  F04D25/06 ,  H02P25/18

Abstract: Unique systems, methods, techniques and apparatuses of motor starters are disclosed. One exemplary embodiment is a synchronous machine including a plurality of stator phase windings, a rotor, a motor starter, and a controller. The motor starter includes a plurality of wye semiconductor switches and a plurality of delta semiconductor switches. The controller is structured to operate the plurality of wye semiconductor switches and the plurality of delta semiconductor switches so as to couple the plurality of stator phase windings in a delta configuration while an angular speed of the rotor is less than a synchronous speed, and structured to operate the plurality of wye semiconductor switches and the plurality of delta semiconductor switches so as to couple the plurality of stator phase windings in a wye configuration in response to the angular speed of the rotor being equal to the synchronous speed.