Operation of a Seven-Level T-Type Active Neutral-Point-Clamped Converter With Modified Level-Shifted PWM
This article presents novel control strategies for a seven-level (7L) T-type active neutral-point-clamped (T-ANPC) converter based on the level-shifted pulse width modulation (LS-PWM) technique. Compared with classical 7L topologies, such as NPC, flying capacitor converter, and cascaded H-bridge con...
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| Veröffentlicht in: | IEEE transactions on industrial electronics (1982) 2021-11, Vol.68 (11), p.10970-10981 |
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| container_title | IEEE transactions on industrial electronics (1982) |
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| creator | Xu, Shuai Zhang, Jianzhong Ma, Guangtong Sun, Zhenyao Liu, Kang Yao, Chunxing |
| description | This article presents novel control strategies for a seven-level (7L) T-type active neutral-point-clamped (T-ANPC) converter based on the level-shifted pulse width modulation (LS-PWM) technique. Compared with classical 7L topologies, such as NPC, flying capacitor converter, and cascaded H-bridge converter, the 7L T-ANPC converter can reduce the device requirements while reserving the advantages of high redundancy and low conduction losses. Furthermore, the internal switching state redundancy provides freedom to balance the flying capacitor (FC) voltage and realize the fault-tolerant operation flexibly. The control strategy with modified LS-PWM technique is developed for the T-ANPC to obtain desired outputs under normal and switch open fault modes. The proposed control strategy considers the complete balancing of dc-link neutral-point voltage and FC voltages. The feasibility of the proposed 7L T-ANPC and control strategy is evaluated by simulations and experimental tests under steady-state and several typical transient operating conditions. |
| doi_str_mv | 10.1109/TIE.2020.3038067 |
| format | Article |
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Compared with classical 7L topologies, such as NPC, flying capacitor converter, and cascaded H-bridge converter, the 7L T-ANPC converter can reduce the device requirements while reserving the advantages of high redundancy and low conduction losses. Furthermore, the internal switching state redundancy provides freedom to balance the flying capacitor (FC) voltage and realize the fault-tolerant operation flexibly. The control strategy with modified LS-PWM technique is developed for the T-ANPC to obtain desired outputs under normal and switch open fault modes. The proposed control strategy considers the complete balancing of dc-link neutral-point voltage and FC voltages. The feasibility of the proposed 7L T-ANPC and control strategy is evaluated by simulations and experimental tests under steady-state and several typical transient operating conditions.</description><identifier>ISSN: 0278-0046</identifier><identifier>EISSN: 1557-9948</identifier><identifier>DOI: 10.1109/TIE.2020.3038067</identifier><identifier>CODEN: ITIED6</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Active neutral-point-clamped (ANPC) ; Capacitors ; Clamping ; Conduction losses ; Electric converters ; Electric potential ; Fault tolerance ; Fault tolerant systems ; flying capacitor ; hybrid multilevel converter ; Multilevel converters ; Pulse duration modulation ; Redundancy ; Switches ; T-type ; Topology ; Voltage ; voltage balancing control ; Voltage control</subject><ispartof>IEEE transactions on industrial electronics (1982), 2021-11, Vol.68 (11), p.10970-10981</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. 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Compared with classical 7L topologies, such as NPC, flying capacitor converter, and cascaded H-bridge converter, the 7L T-ANPC converter can reduce the device requirements while reserving the advantages of high redundancy and low conduction losses. Furthermore, the internal switching state redundancy provides freedom to balance the flying capacitor (FC) voltage and realize the fault-tolerant operation flexibly. The control strategy with modified LS-PWM technique is developed for the T-ANPC to obtain desired outputs under normal and switch open fault modes. The proposed control strategy considers the complete balancing of dc-link neutral-point voltage and FC voltages. The feasibility of the proposed 7L T-ANPC and control strategy is evaluated by simulations and experimental tests under steady-state and several typical transient operating conditions.</description><subject>Active neutral-point-clamped (ANPC)</subject><subject>Capacitors</subject><subject>Clamping</subject><subject>Conduction losses</subject><subject>Electric converters</subject><subject>Electric potential</subject><subject>Fault tolerance</subject><subject>Fault tolerant systems</subject><subject>flying capacitor</subject><subject>hybrid multilevel converter</subject><subject>Multilevel converters</subject><subject>Pulse duration modulation</subject><subject>Redundancy</subject><subject>Switches</subject><subject>T-type</subject><subject>Topology</subject><subject>Voltage</subject><subject>voltage balancing control</subject><subject>Voltage control</subject><issn>0278-0046</issn><issn>1557-9948</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNo9kM9rwjAUx8PYYM7tPtglsHNcfjRpcpTiNkGnYIfHUttXjNSmS6Pgf786ZZf3eI_vD_gg9MzoiDFq3tLpZMQppyNBhaYqvkEDJmVMjIn0LRpQHmtCaaTu0UPX7ShlkWRygLaLFnwerGuwq3COV3CEhsz6WeOUpKcW8LgI9gj4Cw7B5zVZOtsEktT5voUSJ645gg_g8dqGLZ670la2__8lkNXWVqG_luv5I7qr8rqDp-seou_3SZp8ktniY5qMZ6TghgUSCQ26lGA2MZgYNAUoypgzLXjON2XMuCmAcp4r2AhVCKO0UZUsK8G0ZFElhuj1ktt693OALmQ7d_BNX5lxKVVkqOrDhoheVIV3Xeehylpv97k_ZYxmZ55ZzzM788yuPHvLy8ViAeBfbriKlOLiF9O-cCs</recordid><startdate>20211101</startdate><enddate>20211101</enddate><creator>Xu, Shuai</creator><creator>Zhang, Jianzhong</creator><creator>Ma, Guangtong</creator><creator>Sun, Zhenyao</creator><creator>Liu, Kang</creator><creator>Yao, Chunxing</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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Compared with classical 7L topologies, such as NPC, flying capacitor converter, and cascaded H-bridge converter, the 7L T-ANPC converter can reduce the device requirements while reserving the advantages of high redundancy and low conduction losses. Furthermore, the internal switching state redundancy provides freedom to balance the flying capacitor (FC) voltage and realize the fault-tolerant operation flexibly. The control strategy with modified LS-PWM technique is developed for the T-ANPC to obtain desired outputs under normal and switch open fault modes. The proposed control strategy considers the complete balancing of dc-link neutral-point voltage and FC voltages. 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| subjects | Active neutral-point-clamped (ANPC) Capacitors Clamping Conduction losses Electric converters Electric potential Fault tolerance Fault tolerant systems flying capacitor hybrid multilevel converter Multilevel converters Pulse duration modulation Redundancy Switches T-type Topology Voltage voltage balancing control Voltage control |
| title | Operation of a Seven-Level T-Type Active Neutral-Point-Clamped Converter With Modified Level-Shifted PWM |
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