A Voltage-Based Hierarchical Diagnosis Approach for Open-Circuit Fault of Two-Level Traction Converters

This paper proposes a voltage-based hierarchical diagnosis approach for insulated gate bipolar transistors (IGBTs) open-circuit fault of two-level AC-DC-AC traction converters. The proposed approach can diagnose the open-circuit fault in the single-phase rectifier as well as in the three-phase inver...

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Main Authors:	Jingrong Zhang, Tao Peng, Chao Yang, Zhiwen Chen, Hongwei Tao, Chunhua Yang
Format:	Article
Language:	English
Published:	MDPI AG 2019-09-01
Series:	Electronics
Subjects:	open-circuit fault converter hierarchical diagnosis IGBTs voltage-based method
Online Access:	https://www.mdpi.com/2079-9292/8/9/992

id	doaj-2da1af61f6944061b4a4aac279d23582
record_format	Article
spelling	doaj-2da1af61f6944061b4a4aac279d235822020-11-25T02:42:47ZengMDPI AGElectronics2079-92922019-09-018999210.3390/electronics8090992electronics8090992A Voltage-Based Hierarchical Diagnosis Approach for Open-Circuit Fault of Two-Level Traction ConvertersJingrong Zhang0Tao Peng1Chao Yang2Zhiwen Chen3Hongwei Tao4Chunhua Yang5School of Automation, Central South University, Changsha 410083, ChinaSchool of Automation, Central South University, Changsha 410083, ChinaSchool of Automation, Central South University, Changsha 410083, ChinaSchool of Automation, Central South University, Changsha 410083, ChinaSchool of Automation, Central South University, Changsha 410083, ChinaSchool of Automation, Central South University, Changsha 410083, ChinaThis paper proposes a voltage-based hierarchical diagnosis approach for insulated gate bipolar transistors (IGBTs) open-circuit fault of two-level AC-DC-AC traction converters. The proposed approach can diagnose the open-circuit fault in the single-phase rectifier as well as in the three-phase inverter without extra sensors. Moreover, no mandatory control signal injection is required, which ensures safe operation. In addition, the different levels of diagnostic results are flexibly determined by the presented hierarchical diagnosis architecture, which depends on the market requirements of wide use of IGBT modules. To be specific, firstly, a mixed-logic-dynamic estimation model of DC-link voltage is established. Secondly, the diagnosis characteristic function (DCF) is constructed by way of a residual characteristic analysis under normal and various open-circuit fault cases. Thirdly, the vector angular similarity function (VASF) is calculated for leg-level diagnosis and the control signals switching matching method is used to locate the fault in the device-level. Finally, the experimental results show the effectiveness of the proposed approach.https://www.mdpi.com/2079-9292/8/9/992open-circuit faultconverterhierarchical diagnosisIGBTsvoltage-based method
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Jingrong Zhang Tao Peng Chao Yang Zhiwen Chen Hongwei Tao Chunhua Yang
spellingShingle	Jingrong Zhang Tao Peng Chao Yang Zhiwen Chen Hongwei Tao Chunhua Yang A Voltage-Based Hierarchical Diagnosis Approach for Open-Circuit Fault of Two-Level Traction Converters Electronics open-circuit fault converter hierarchical diagnosis IGBTs voltage-based method
author_facet	Jingrong Zhang Tao Peng Chao Yang Zhiwen Chen Hongwei Tao Chunhua Yang
author_sort	Jingrong Zhang
title	A Voltage-Based Hierarchical Diagnosis Approach for Open-Circuit Fault of Two-Level Traction Converters
title_short	A Voltage-Based Hierarchical Diagnosis Approach for Open-Circuit Fault of Two-Level Traction Converters
title_full	A Voltage-Based Hierarchical Diagnosis Approach for Open-Circuit Fault of Two-Level Traction Converters
title_fullStr	A Voltage-Based Hierarchical Diagnosis Approach for Open-Circuit Fault of Two-Level Traction Converters
title_full_unstemmed	A Voltage-Based Hierarchical Diagnosis Approach for Open-Circuit Fault of Two-Level Traction Converters
title_sort	voltage-based hierarchical diagnosis approach for open-circuit fault of two-level traction converters
publisher	MDPI AG
series	Electronics
issn	2079-9292
publishDate	2019-09-01
description	This paper proposes a voltage-based hierarchical diagnosis approach for insulated gate bipolar transistors (IGBTs) open-circuit fault of two-level AC-DC-AC traction converters. The proposed approach can diagnose the open-circuit fault in the single-phase rectifier as well as in the three-phase inverter without extra sensors. Moreover, no mandatory control signal injection is required, which ensures safe operation. In addition, the different levels of diagnostic results are flexibly determined by the presented hierarchical diagnosis architecture, which depends on the market requirements of wide use of IGBT modules. To be specific, firstly, a mixed-logic-dynamic estimation model of DC-link voltage is established. Secondly, the diagnosis characteristic function (DCF) is constructed by way of a residual characteristic analysis under normal and various open-circuit fault cases. Thirdly, the vector angular similarity function (VASF) is calculated for leg-level diagnosis and the control signals switching matching method is used to locate the fault in the device-level. Finally, the experimental results show the effectiveness of the proposed approach.
topic	open-circuit fault converter hierarchical diagnosis IGBTs voltage-based method
url	https://www.mdpi.com/2079-9292/8/9/992
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A Voltage-Based Hierarchical Diagnosis Approach for Open-Circuit Fault of Two-Level Traction Converters

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