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Patent Searching and Data


Title:
INSULATION MONITORING CIRCUIT FOR MOTOR CONTROLLER
Document Type and Number:
WIPO Patent Application WO/2019/192296
Kind Code:
A1
Abstract:
An insulation monitoring circuit for a motor controller, comprising: a first voltage sampling circuit and a second voltage sampling circuit. The first voltage sampling circuit is connected to a bus input positive electrode (+VBUS), a bus input negative electrode (PGND) and a bus voltage sampling signal (HV_VDC) line, the bus voltage sampling signal (HV_VDC) being connected to a motor controller; and the second voltage sampling circuit is connected to the bus input positive electrode (+VBUS), the bus input negative electrode (PGND) and an insulated voltage sampling signal (HV_VISO) line, the insulated voltage sampling signal (HV_VISO) being connected to the motor controller. The motor controller compares the bus voltage value acquired by the first voltage sampling circuit with the insulated voltage value acquired by the second voltage sampling circuit, and sends an insulation monitoring alarm signal when the bus voltage value is inconsistent with the insulated voltage value. The insulation monitoring circuit for the motor controller is simple and practical, has low cost, and satisfies actual needs.

Inventors:
QU, Yuxia (Building 7, Putianshiye Technology park No. 5 Jiangtai Road, Chaoyang District Beijing 6, 100016, CN)
WAN, Fuxiang (Building 7, Putianshiye Technology park No. 5 Jiangtai Road, Chaoyang District Beijing 6, 100016, CN)
TAN, Lingling (Building 7, Putianshiye Technology park No. 5 Jiangtai Road, Chaoyang District Beijing 6, 100016, CN)
Application Number:
CN2019/077979
Publication Date:
October 10, 2019
Filing Date:
March 13, 2019
Export Citation:
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Assignee:
JING-JIN ELECTRIC TECHNOLOGIES CO., LTD. (Building 7, Putianshiye Technology park No. 5 Jiangtai Road, Chaoyang District Beijing 6, 100016, CN)
International Classes:
G05B23/02; G01R31/14
Foreign References:
CN108445870A2018-08-24
CN208077003U2018-11-09
CN103308755A2013-09-18
CN203894326U2014-10-22
CN106405354A2017-02-15
CN103389436A2013-11-13
CN104422825A2015-03-18
JP2002122629A2002-04-26
Attorney, Agent or Firm:
BEIJING LONGAN LAW FIRM (Room 188, Beijing International Club21 Jianguomenwai Street, Chaoyang District, Beijing 0, 100020, CN)
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