公开(公告)号：US20180166937A1

公开(公告)日：2018-06-14

申请号：US15379374

申请日：2016-12-14

Applicant: ABB Schweiz AG

Inventor： Chenjie Lin ,  Ghanshyam Shrestha ,  Matthew Henriksen

IPC: H02K3/16 ,  H02K11/042 ,  H02K1/24

CPC classification number: H02K3/16 ,  H02K1/246 ,  H02K11/042 ,  Y02E10/725

Abstract: An assembly that can enhance the power factor of synchronous reluctance (SynRel) machines. The assembly can include one or more pickup coils that are at least proximally adjacent to an outer periphery of a rotor that are structured to harvest energy in an air gap between the rotor and a stator. The harvested energy can be supplied to a rectifier that is electrically coupled to the pickup coils, and which can convert the harvested energy into DC excitation current. The DC excitation current can be provided to one or more DC field windings that extend through the rotor, such as, for example, through flux barriers in the rotor. The flow of the DC excitation current through the DC field windings can generate a flux that can be put in a rotor axis to enhance the power factor and torque rating of the SynRel machine.

公开(公告)号：US11509202B2

公开(公告)日：2022-11-22

申请号：US16223971

申请日：2018-12-18

Applicant: ABB Schweiz AG

Inventor： Chenjie Lin ,  Matthew Henriksen ,  Ghanshyam Shrestha ,  Elio Alberto Perigo

IPC: H02K21/02 ,  H02K21/14 ,  H02K1/276 ,  H02K1/02 ,  H02P31/00 ,  H02P1/00

Abstract: A permanent magnet motor is provided that produces variable magnetic flux. The motor may include two different types of permanent magnets with different coercivities. The magnetic state of one of the magnets may be altered during use. In one state, the effective magnetic flux of the motor is greater, and in another state, the effective magnetic flux of the motor is less.