Title:
METHOD FOR CONTROLLING DIRECT CURRENT BUS DISCHARGE, DEVICE, EQUIPMENT AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2019/119871
Kind Code:
A1
Abstract:
Provided by the present invention is a method for controlling direct current bus discharge, comprising: receiving an active release command; obtaining a motor current signal according to the active release command; converting the motor current signal into a current signal in a stator coordinate system; outputting a voltage control signal in the stator coordinate system on the basis of the current signal in the stator coordinate system and a current reference command of a preset stator coordinate system, wherein the current reference command is a high-frequency alternating current; converting the voltage control signal in the stator coordinate system into a three-phase voltage control signal, and controlling the working state of a switching element according to the three-phase voltage control signal. The discharge method actively discharges a direct current bus by means of setting a preset high-frequency alternating current current reference command and by controlling the motor current in the stator coordinate system on the basis of the current reference command. The control process is carried out in the stator coordinate system, a rotor position sensor does not need to obtain rotor rotation angle information, and the process may still operate when the rotor position sensor fails.
Inventors:
XIA ZHULIANG (CN)
LIANG LINGWEI (CN)
CHENG SHU (CN)
ZHAO XIAOKUN (CN)
LIU XIUTIAN (CN)
HAN XIANG (CN)
LIANG LINGWEI (CN)
CHENG SHU (CN)
ZHAO XIAOKUN (CN)
LIU XIUTIAN (CN)
HAN XIANG (CN)
Application Number:
PCT/CN2018/103622
Publication Date:
June 27, 2019
Filing Date:
August 31, 2018
Export Citation:
Assignee:
GUANGZHOU AUTOMOBILE GROUP CO (CN)
International Classes:
H02P6/28; B60L3/00; H02P21/00
Foreign References:
| CN106230243A | 2016-12-14 | |||
| CN102223100A | 2011-10-19 | |||
| JP2012016234A | 2012-01-19 | |||
| CN105270182A | 2016-01-27 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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