公开(公告)号：US10340822B2

公开(公告)日：2019-07-02

申请号：US15961063

申请日：2018-04-24

Applicant: Delta Electronics, Inc.

Inventor： Hong-Cheng Sheu ,  Chien-Yu Lai ,  I-Wen Tsai

IPC: H02K3/12 ,  H02P6/08 ,  H02P25/18

Abstract: A motor control system includes an electric motor and inverter. The electric motor includes a stator, rotor, and winding structure. The stator includes an iron core with a plurality of slots formed therein along a radial direction of the stator. The winding structure has a plurality of hairpin wires with pins disposed in the slots. The winding structure is configured to provide a plurality of phase windings and each phase winding includes a plurality of motor windings. The inverter includes a switching controller configured to control the turning-on and turning-off of the motor windings of each phase winding of the winding structure. When the electric motor operates in a high-speed mode, the switching controller controls the turning-on and turning-off of the motor windings of each phase winding such that a number of the phase windings turned-on is ⅓ less than a number of all the phase windings.