A Simple-to-Implement Fault Diagnosis Method for Open Switch Fault in Wind System PMSG Drives without Threshold Setting

Tan Yanghong, Zhang Haixia and Zhou Ye
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Tan Yanghong: College of electrical and information engineering, Hunan University, Changsha 410082, China
Zhang Haixia: College of electrical and information engineering, Hunan University, Changsha 410082, China
Zhou Ye: NARI Group Corporation/State Grid Electric Power Research Institute, Nanjing 210003, China

Energies, 2018, vol. 11, issue 10, 1-18

Abstract: The conversion system is a major contributor to failure rates. These faults lead to time and cost consuming. Fault diagnosis capabilities pay as a solver to achieve a steady system. This paper presents a full analysis of permanent magnet synchronous generator wind system (PMSGWS) and proposes a special RMS voltage-based fault diagnosis method. The full analysis presents a comprehensive knowledge of faulty behaviors especially under arm current flowing or cutting off. Due to enough knowledge of faulty behaviors, the implementation of the detection method without threshold setting is contributed by the special RMS voltage. Its sample period is set longer than the time of the maximum pulse width ratio (MPR) and shorter than the fault show time of lower tube voltage. Due to this, the detection speed and robustness are achieved. By these simple settings for the fault diagnosis method, the faulty switch is detected in less than 1/4 of the period. Simulation and experimental results confirm the validity and feasibility of the new proposed fault detection method.

Keywords: permanent magnet synchronous generator (PMSG); fault diagnosis; faulty operation analysis; pulse-width modulation (PWM); current analysis; RMS; diagnosis of synchronous machines (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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