A Reduced-Order Observer-Based Method for Simultaneous Diagnosis of Open-Switch and Current Sensor Faults of a Grid-Tied NPC Inverter
This paper presents a reduced-order observer-based simultaneous diagnosis strategy for grid-tied neutral point clamped (NPC) inverters subjected to open-switch and current sensor faults. First, the augmented descriptor system is constructed for the NPC inverter to transfer the current sensor fault i...
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| Veröffentlicht in: | IEEE transactions on power electronics 2023-07, Vol.38 (7), p.1-14 |
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| creator | Xu, Shuiqing Huang, Wenzhan Huang, Darong Chen, Hongtian Chai, Yi Ma, Mingyao Zheng, Wei Xing |
| description | This paper presents a reduced-order observer-based simultaneous diagnosis strategy for grid-tied neutral point clamped (NPC) inverters subjected to open-switch and current sensor faults. First, the augmented descriptor system is constructed for the NPC inverter to transfer the current sensor fault into a generalized state vector. Then, the matrix transformations are applied to decouple the open-switch fault from the inverter system state and the current sensor fault. Subsequently, a reduced-order observer is developed for the transformed augmented descriptor system to achieve simultaneous precise estimation of the phase current and the current sensor fault. Finally, using the estimation results, a diagnosis algorithm with an adaptive threshold is proposed, which can not only distinguish between current sensor faults and open-switch faults, but also locate the faulty power switch and estimate different types of current sensor faults. Experimental results and comparisons are provided to verify the robustness and effectiveness of the proposed fault diagnosis algorithm. |
| doi_str_mv | 10.1109/TPEL.2023.3268666 |
| format | Article |
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First, the augmented descriptor system is constructed for the NPC inverter to transfer the current sensor fault into a generalized state vector. Then, the matrix transformations are applied to decouple the open-switch fault from the inverter system state and the current sensor fault. Subsequently, a reduced-order observer is developed for the transformed augmented descriptor system to achieve simultaneous precise estimation of the phase current and the current sensor fault. Finally, using the estimation results, a diagnosis algorithm with an adaptive threshold is proposed, which can not only distinguish between current sensor faults and open-switch faults, but also locate the faulty power switch and estimate different types of current sensor faults. Experimental results and comparisons are provided to verify the robustness and effectiveness of the proposed fault diagnosis algorithm.</description><identifier>ISSN: 0885-8993</identifier><identifier>EISSN: 1941-0107</identifier><identifier>DOI: 10.1109/TPEL.2023.3268666</identifier><identifier>CODEN: ITPEE8</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Adaptive algorithms ; Augmented descriptor system ; Circuit faults ; Current measurement ; current sensor fault ; Estimation ; Fault diagnosis ; Fault location ; Faults ; grid -tied neutral point clamped (NPC) inverter ; Insulated gate bipolar transistors ; Inverters ; Mathematical analysis ; Observers ; open-switch fault ; Phase current ; reduced-order observer ; Sensors ; State vectors</subject><ispartof>IEEE transactions on power electronics, 2023-07, Vol.38 (7), p.1-14</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 2023</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c294t-2ba4209906b5a1fe0729497fe1e33e670e16bfcf52c732df16054b3d4e16af1a3</citedby><cites>FETCH-LOGICAL-c294t-2ba4209906b5a1fe0729497fe1e33e670e16bfcf52c732df16054b3d4e16af1a3</cites><orcidid>0000-0001-9907-4832 ; 0000-0002-0572-5938 ; 0000-0002-8637-8682 ; 0000-0002-5068-5162 ; 0000-0003-3081-3726 ; 0000-0002-8600-9668 ; 0000-0002-5741-5501</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/10106006$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,776,780,792,27901,27902,54733</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/10106006$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Xu, Shuiqing</creatorcontrib><creatorcontrib>Huang, Wenzhan</creatorcontrib><creatorcontrib>Huang, Darong</creatorcontrib><creatorcontrib>Chen, Hongtian</creatorcontrib><creatorcontrib>Chai, Yi</creatorcontrib><creatorcontrib>Ma, Mingyao</creatorcontrib><creatorcontrib>Zheng, Wei Xing</creatorcontrib><title>A Reduced-Order Observer-Based Method for Simultaneous Diagnosis of Open-Switch and Current Sensor Faults of a Grid-Tied NPC Inverter</title><title>IEEE transactions on power electronics</title><addtitle>TPEL</addtitle><description>This paper presents a reduced-order observer-based simultaneous diagnosis strategy for grid-tied neutral point clamped (NPC) inverters subjected to open-switch and current sensor faults. First, the augmented descriptor system is constructed for the NPC inverter to transfer the current sensor fault into a generalized state vector. Then, the matrix transformations are applied to decouple the open-switch fault from the inverter system state and the current sensor fault. Subsequently, a reduced-order observer is developed for the transformed augmented descriptor system to achieve simultaneous precise estimation of the phase current and the current sensor fault. Finally, using the estimation results, a diagnosis algorithm with an adaptive threshold is proposed, which can not only distinguish between current sensor faults and open-switch faults, but also locate the faulty power switch and estimate different types of current sensor faults. Experimental results and comparisons are provided to verify the robustness and effectiveness of the proposed fault diagnosis algorithm.</description><subject>Adaptive algorithms</subject><subject>Augmented descriptor system</subject><subject>Circuit faults</subject><subject>Current measurement</subject><subject>current sensor fault</subject><subject>Estimation</subject><subject>Fault diagnosis</subject><subject>Fault location</subject><subject>Faults</subject><subject>grid -tied neutral point clamped (NPC) inverter</subject><subject>Insulated gate bipolar transistors</subject><subject>Inverters</subject><subject>Mathematical analysis</subject><subject>Observers</subject><subject>open-switch fault</subject><subject>Phase current</subject><subject>reduced-order observer</subject><subject>Sensors</subject><subject>State vectors</subject><issn>0885-8993</issn><issn>1941-0107</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNpNkEFu2zAQRYkiBeqkOUCBLgh0TXeGlChx6Th2asCtg9hZC5Q4TBTEkktKKXqA3Lt0nUVWA3z89wd4jH1BmCKC-b67XaynEqSaKqlLrfUHNkGToQCE4oxNoCxzURqjPrHzGJ8AMMsBJ-x1xu_IjQ05sQmOAt_UkcILBXFlIzn-k4bH3nHfB75t9-PzYDvqx8ivW_vQ9bGNvPd8c6BObP-0Q_PIbef4fAyBuoFvqYsJXNrE_S9afhNaJ3ZtWv51O-erLn0aKHxmH719jnT5di_Y_XKxm_8Q683Naj5bi0aabBCytpkEY0DXuUVPUKTYFJ6QlCJdAKGufeNz2RRKOo8a8qxWLku59WjVBft22j2E_vdIcaie-jF06WUlS8y1SV4wtfDUakIfYyBfHUK7t-FvhVAdbVdH29XRdvVmOzFfT0xLRO_6CBpAq3-1yXty</recordid><startdate>20230701</startdate><enddate>20230701</enddate><creator>Xu, Shuiqing</creator><creator>Huang, Wenzhan</creator><creator>Huang, Darong</creator><creator>Chen, Hongtian</creator><creator>Chai, Yi</creator><creator>Ma, Mingyao</creator><creator>Zheng, Wei Xing</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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First, the augmented descriptor system is constructed for the NPC inverter to transfer the current sensor fault into a generalized state vector. Then, the matrix transformations are applied to decouple the open-switch fault from the inverter system state and the current sensor fault. Subsequently, a reduced-order observer is developed for the transformed augmented descriptor system to achieve simultaneous precise estimation of the phase current and the current sensor fault. Finally, using the estimation results, a diagnosis algorithm with an adaptive threshold is proposed, which can not only distinguish between current sensor faults and open-switch faults, but also locate the faulty power switch and estimate different types of current sensor faults. 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| subjects | Adaptive algorithms Augmented descriptor system Circuit faults Current measurement current sensor fault Estimation Fault diagnosis Fault location Faults grid -tied neutral point clamped (NPC) inverter Insulated gate bipolar transistors Inverters Mathematical analysis Observers open-switch fault Phase current reduced-order observer Sensors State vectors |
| title | A Reduced-Order Observer-Based Method for Simultaneous Diagnosis of Open-Switch and Current Sensor Faults of a Grid-Tied NPC Inverter |
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