A Nonintrusive IGBT Open-Circuit Fault and Current Sensor Fault Diagnosis Method for Grid-Tied Three-phase Three-Wire Inverter with Two Current Sensors

Li, Zhan; Wheeler, Pat; Watson, Alan; Costabeber, Alessandro; Bai, Zhihong; Zhang, Xin; Zhao, Bohui; Ma, Hao

Abstract

© 2019 IEEE. In some cases, only two current sensors are available in three-phase three-wire (3P3W) inverters. This occurs when one of three sensors is faulty, or the inverter is equipped with only two sensors to save cost. There has been no method addressing the diagnosis of both IGBT open-circuit faults and current sensor faults in the 3P3W inverter with only two current sensors. In order to solve this problem, a nonintrusive method based on average output voltage deviations is proposed. The deviations between the measured and estimated output line and phase voltages are utilized to detect and locate the fault. With average model, this method can diagnose the fault fast with only signals available in the controller. Therefore, no extra sampling or diagnosing circuits are needed. Besides, the error-adaptive thresholds are adopted to ensure the robustness. Finally, experimental results verified the effectiveness.

Citation

Li, Z., Wheeler, P., Watson, A., Costabeber, A., Bai, Z., Zhang, X., …Ma, H. (2019). A Nonintrusive IGBT Open-Circuit Fault and Current Sensor Fault Diagnosis Method for Grid-Tied Three-phase Three-Wire Inverter with Two Current Sensors. In 2019 IEEE Energy Conversion Congress and Exposition (ECCE) (2963-2967). https://doi.org/10.1109/ECCE.2019.8912813

• Conference Name: 2019 IEEE Energy Conversion Congress and Exposition (ECCE)
• Conference Location: Baltimore, MD, USA
• Start Date: Sep 29, 2019
• End Date: Oct 3, 2019
• Acceptance Date: Mar 1, 2019
• Online Publication Date: Nov 28, 2019
• Publication Date: 2019-09
• Deposit Date: Mar 27, 2020
• Publicly Available Date: Mar 27, 2020
• Pages: 2963-2967
• Series ISSN: 2329-3748
• Book Title: 2019 IEEE Energy Conversion Congress and Exposition (ECCE)
• ISBN: 978-1-7281-0396-9
• DOI: https://doi.org/10.1109/ECCE.2019.8912813
• Public URL: https://nottingham-repository.worktribe.com/output/3660296
• Publisher URL: https://ieeexplore.ieee.org/document/8912813
• Additional Information: © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.