Title:
NOVEL DUAL-STATOR COMPOSITE MOTOR SUITABLE FOR ROTOR ABSOLUTE POSITION SENSORLESS CONTROL
Document Type and Number:
WIPO Patent Application WO/2020/228297
Kind Code:
A1
Abstract:
A novel dual-stator composite motor suitable for rotor absolute position sensorless control, relating to the technical field of motor device manufacturing. An inner stator (5) is fixed on a stationary shaft (9), an outer stator (7) is concentric with the inner stator (5), and the components above constitute the stationary part of the motor; a rotor (6) is mounted between the outer stator (7) and the inner stator (5), and forms the rotating part of the motor by means of a front rotor support (4) and a moving shaft (1); the rotating part is isolated from a front end cover (2) by means of a front outer bearing (3), and is isolated from a rear end cover (14) by means of a rear outer bearing (11) after being connected to a rear rotor support (10); the moving shaft (1) and the stationary shaft (9) are isolated by means of an inner bearing (13). The motor radially integrates motor structures of different types and having different numbers of pole pairs; sensorless detection is performed on the electrical angle positions of two air gaps, and then the detected electrical angle positions of the two air gaps are demodulated to finally obtain the rotor absolute position. Therefore, the motor topology has the advantages such as high power density, high integration, and high reliability while implementing rotor absolute position sensorless detection.
Inventors:
NI RONGGANG (CN)
NIE SHUXIN (CN)
WU YAWEI (CN)
NIE SHUXIN (CN)
WU YAWEI (CN)
Application Number:
PCT/CN2019/121222
Publication Date:
November 19, 2020
Filing Date:
November 27, 2019
Export Citation:
Assignee:
UNIV QINGDAO (CN)
International Classes:
H02K16/04
Foreign References:
| CN110048574A | 2019-07-23 | |||
| CN104734440A | 2015-06-24 | |||
| CN104333197A | 2015-02-04 | |||
| CN107516986A | 2017-12-26 | |||
| CN106059225A | 2016-10-26 | |||
| JP2016077052A | 2016-05-12 |
Attorney, Agent or Firm:
QINGDAO GAOXIAO PATENT AGENCY (GENERAL PARTNERSHIPS) (CN)
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