Invention Application
US20160091556A1 FAULT DIAGNOSIS METHOD FOR FREEWHEELING DIODES OF DUAL-SWITCH POWER CONVERTER OF SWITCHED RELUCTANCE MOTOR
有权
故障诊断方法，用于自由切换开关电动机双开关电源转换器二极管
- Patent Title: FAULT DIAGNOSIS METHOD FOR FREEWHEELING DIODES OF DUAL-SWITCH POWER CONVERTER OF SWITCHED RELUCTANCE MOTOR
- Patent Title (中): 故障诊断方法，用于自由切换开关电动机双开关电源转换器二极管
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Application No.: US14351528Application Date: 2013-04-19
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Publication No.: US20160091556A1Publication Date: 2016-03-31
- Inventor: Hao Chen , Xing Wang
- Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
- Priority: CN201310030343.8 20130128
- International Application: PCT/CN13/74449 WO 20130419
- Main IPC: G01R31/26
- IPC: G01R31/26 ; G01R31/34 ; G01R31/40
Abstract:
A fault diagnosis method for freewheeling diodes of power converter of switched reluctance motor with two main switches per phase, in which two current sensors are arranged on a power converter with two main switches per phase, wherein, one current sensor LEM1 detects the total current of the main switches connected to the DC bus, and the other current sensor LEM2 detects the total feedback current of the freewheeling diodes connected to the DC bus. By controlling ON/OFF of the upper and lower main switch tubes, short circuit fault of the upper freewheeling diode, short circuit fault of the lower freewheeling diode, short circuit fault of both the upper freewheeling diode and the lower freewheeling diode, open circuit fault of the upper freewheeling diode, open circuit fault of the lower freewheeling diode, or open circuit fault of both the upper freewheeling diode and the lower freewheeling diode can be determined.
Public/Granted literature
- US09316682B1 Fault diagnosis method for freewheeling diodes of dual-switch power converter of switched reluctance motor Public/Granted day:2016-04-19
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