Title:
PERMANENT MAGNET SYNCHRONOUS MOTOR STARTING METHOD, DEVICE, POWER SYSTEM AND UNMANNED AERIAL VEHICLE
Document Type and Number:
WIPO Patent Application WO/2018/099266
Kind Code:
A1
Abstract:
A method for starting a permanent magnet synchronous motor, a device power system and an unmanned aerial vehicle, the method comprising: obtaining a current motor rotation speed and motor position information of the permanent magnet synchronous motor (S101); determining whether the current motor rotation speed is less than a pre-set minimum rotation speed, if yes, use the preset minimum rotation speed as a feedback rotation speed; otherwise, use the current motor rotation speed as the feedback rotation speed (S102); and performing closed-loop control of the permanent magnet synchronous motor according to the feedback rotation speed and the motor position information (S103). By presetting the preset minimum rotation speed, when the calculated current motor rotation speed is less than the preset minimum rotation speed, the preset minimum rotation speed is used as the feedback rotation speed, and when the calculated current motor rotation speed is greater than the preset minimum rotation speed, the current motor rotation speed is used as the feedback rotation speed, thereby achieving direct closed-loop control, abandoning the cumbersome state switching, too many parameter adjustments and other aspects in the prior art, simplifying the permanent magnet synchronous motor starting method including three steps of positioning, open-loop control and closed-loop control in the prior art, and making the starting method easier. At the same time, hidden failures under various conditions in the prior art are avoided, and the reliability of the startup process is effectively improved.
Inventors:
CHEN YIDONG (CN)
Application Number:
PCT/CN2017/111017
Publication Date:
June 07, 2018
Filing Date:
November 15, 2017
Export Citation:
Assignee:
AUTEL ROBOTICS CO LTD (CN)
International Classes:
H02P6/20
Foreign References:
| CN106385208A | 2017-02-08 | |||
| CN105610354A | 2016-05-25 | |||
| CN102739148A | 2012-10-17 | |||
| CN104980066A | 2015-10-14 | |||
| CN103746619A | 2014-04-23 | |||
| US20020021106A1 | 2002-02-21 |
Other References:
See also references of EP 3550717A4
Attorney, Agent or Firm:
AFD CHINA INTELLECTUAL PROPERTY LAW OFFICE (CN)
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