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Patent Searching and Data


Title:
POWER SUPPLY SYSTEM FOR MAGNETIC BEARING AND CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/091297
Kind Code:
A1
Abstract:
A power supply system for a magnetic bearing and a control method therefor. The system comprises: a rectifying and filtering circuit (1) for performing rectifying and filtering processing on an alternating-current input power source, so as to obtain a first direct-current bus voltage and then divide same into two paths, wherein one path of the first direct-current bus voltage supplies power to a motor controller (5) of an eclectic motor (6) that a magnetic bearing (3) belongs to; a power acquisition circuit (9) for acquiring power from the other path of the first direct-current bus voltage, so as to obtain a second direct-current bus voltage, wherein the second direct-current bus voltage is within an allowable input voltage range of a DC-DC power source (2); and the DC-DC power source (2) for converting the second direct-current bus voltage into a third direct-current bus voltage and supplying power to a bearing controller (4) of the magnetic bearing (3). The power supply system for a magnetic bearing and the control method therefor can overcome the defects in the prior art, such as a poor power supply stability, a complex structure and poor reliability.

Inventors:
GUO, Weilin (West Jinji Road, QianshanZhuhai, Guangdong 0, 519070, CN)
HE, Yongling (West Jinji Road, QianshanZhuhai, Guangdong 0, 519070, CN)
WANG, Fan (West Jinji Road, QianshanZhuhai, Guangdong 0, 519070, CN)
HU, Daofu (West Jinji Road, QianshanZhuhai, Guangdong 0, 519070, CN)
Application Number:
CN2018/112306
Publication Date:
May 16, 2019
Filing Date:
October 29, 2018
Export Citation:
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Assignee:
GREE GREEN REFRIGERATION TECHNOLOGY CENTER CO., LTD. OF ZHUHAI (Science and Technology Building, No.789 Qianshan Jinji RoadZhuhai, Guangdong 5, 519015, CN)
International Classes:
F16C32/04
Foreign References:
CN108167330A2018-06-15
CN106849789A2017-06-13
CN202721450U2013-02-06
CN203691301U2014-07-02
CN103701336A2014-04-02
CN202679265U2013-01-16
CN101510098A2009-08-19
US5917297A1999-06-29
EP0430009A11991-06-05
Attorney, Agent or Firm:
BEIJING XURUN LAW FIRM (Room B-1605, Caizhi International BuildingNo.18 Zhongguancun East Road, Haidian District, Beijing 3, 100083, CN)
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