Title:
OVERCURRENT PROTECTION METHOD, OVERCURRENT PROTECTION SYSTEM, AND UNMANNED AERIAL VEHICLE
Document Type and Number:
WIPO Patent Application WO/2018/082524
Kind Code:
A1
Abstract:
An overcurrent protection method, comprising the following steps: sampling an input current provided by the direct current side (S10); filtering the sampled current (S11); determining whether the filtered current is larger than a threshold current (S12); if the filtered current is larger than the threshold current, sending an overcurrent control signal to an inverter (S14), so as to control the current outputted by the inverter to a permanent magnet synchronous motor. The invention enables precise discovery of an overcurrent of a permanent magnet synchronous motor, and timely control of the overcurrent, thereby guaranteeing the safety of the permanent magnet synchronous motor when an overcurrent occurs.
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Inventors:
CHEN YIDONG (CN)
YAN SHIZHI (CN)
YAN SHIZHI (CN)
Application Number:
PCT/CN2017/108386
Publication Date:
May 11, 2018
Filing Date:
October 30, 2017
Export Citation:
Assignee:
AUTEL ROBOTICS CO LTD (CN)
International Classes:
H02P29/02
Foreign References:
| CN204179642U | 2015-02-25 | |||
| KR20120061660A | 2012-06-13 | |||
| CN102923299A | 2013-02-13 | |||
| CN106655978A | 2017-05-10 | |||
| CN101492091A | 2009-07-29 |
Attorney, Agent or Firm:
AFD CHINA INTELLECTUAL PROPERTY LAW OFFICE (CN)
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