公开(公告)号：US20190068094A1

公开(公告)日：2019-02-28

申请号：US16111288

申请日：2018-08-24

申请人： Johnson Electric International AG

发明人： Chiping Sun ,  Shinghin Yeung ,  Haibo Jiang ,  Guodong Liu ,  Shujuan Huang

IPC分类号： H02P6/28 ,  H02P6/16 ,  H02P6/15 ,  H02P25/026

摘要： A motor, a driving circuit thereof and a driving method thereof are provided. The motor driving method includes: during a motor starting stage, when a detected rotor magnetic field is a first polarity and a polarity of an AC power source is positive, or the detected rotor magnetic field is a second polarity and the polarity of the AC power source is negative after a zero voltage crossing point of the AC power source, instantly sending a trigger pulse to a controllable bidirectional AC switch connected in series with a motor winding at both ends of the AC power source; during a motor operating stage, after the zero voltage crossing point of the AC power source, sending a trigger pulse to the controllable bidirectional AC switch after a delay time after the zero voltage crossing point. This method can provide a large torque during the motor starting stage.

公开(公告)号：US10707787B2

公开(公告)日：2020-07-07

申请号：US16111288

申请日：2018-08-24

申请人： Johnson Electric International AG

发明人： Chiping Sun ,  Shinghin Yeung ,  Haibo Jiang ,  Guodong Liu ,  Shujuan Huang

IPC分类号： H02P6/28 ,  H02P25/026 ,  H02P6/15 ,  H02P6/16 ,  H02P1/46 ,  H02P25/03 ,  H02P6/30 ,  H02P29/032

摘要： A motor, a driving circuit thereof and a driving method thereof are provided. The motor driving method includes: during a motor starting stage, when a detected rotor magnetic field is a first polarity and a polarity of an AC power source is positive, or the detected rotor magnetic field is a second polarity and the polarity of the AC power source is negative after a zero voltage crossing point of the AC power source, instantly sending a trigger pulse to a controllable bidirectional AC switch connected in series with a motor winding at both ends of the AC power source; during a motor operating stage, after the zero voltage crossing point of the AC power source, sending a trigger pulse to the controllable bidirectional AC switch after a delay time after the zero voltage crossing point. This method can provide a large torque during the motor starting stage.

公开(公告)号：US10340824B2

公开(公告)日：2019-07-02

申请号：US15803229

申请日：2017-11-03

申请人： JOHNSON ELECTRIC INTERNATIONAL AG

发明人： Chiping Sun ,  Qiubao Wang ,  Ken Wong ,  Enhui Wang ,  Haibo Jiang ,  Shujuan Huang

IPC分类号： H02P6/17 ,  H02P6/06 ,  F04D13/06 ,  G01D5/14 ,  G11B21/08 ,  H02K11/04 ,  H02P1/22 ,  H02P6/22 ,  H02P23/00

摘要： A motor-driven integrated circuit comprises a plurality of position comparators, a timer and a central processing. Each of the plurality of position comparators receives a pole detection signal denoted a position of a rotor of a motor. The timer receives a timing interrupt signal output by the plurality of position comparators when a predetermined edge of the pole detection signal is generated and records a time of the predetermined edge. The central processing unit obtains a rotation speed of the motor according to a time difference between two predetermined edges.