公开(公告)号：US11545882B2

公开(公告)日：2023-01-03

申请号：US16986532

申请日：2020-08-06

Applicant: ABB Schweiz AG

Inventor： Robert F. McElveen, Jr. ,  Richard J. Budzynski ,  Jukka T. Jarvinen

IPC: H02K19/10 ,  H02K3/28 ,  H02K21/02 ,  H02K21/12 ,  H02P1/46 ,  H02P25/18 ,  H02K1/12

Abstract: A synchronous electrical motor, which may operate poly-phase electrical power, is configured to operate at a rated flux configuration and a high flux configuration. To enable the high flux configuration, some coils wound about the stator of the electric motor can be designated bypass coils and can be selectively disconnected from the power source supplying the motor with electrical power. The remaining permanent coils continue to receive full line power and generate a rotating magnetic field with an increased magnetic flux. At startup from standstill conditions, the bypass coils are selectively disconnected so that a flux boost occurs and a corresponding increase in output torque of the electric motor.