Finite Set MPC Algorithm for Achieving Thermal Redistribution in a Neutral-Point-Clamped Converter

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Abstract

The three level neutral-point clamped (3L-NPC) topology is one of the most widely used multilevel topologies in the low and medium voltage applications and also one of the most commercialized topologies. Although it offers many benefits compared to the conventional two level topology, it suffers from a considerable unequal loss distribution among the inner and outer switches and the clamping diodes. To solve this problem, we are proposing a control algorithm based on the finite control set model predictive control (FCS-MPC) that can provide a more balanced stress distribution. For implementing the proposed control algorithm no additional measurements are required nor thermal models of the semiconductor devices. The algorithm benefits are even more noticeable during low voltage ride through (LVRT) scenarios when the output voltage level of the converter is low and the current amplitude is high. Obtained simulation results confirm the positive effects on the thermal redistribution and also the junction temperatures of the most stressed devices are reduced. Effects of the algorithm are also verified on an experimental set-up.
Original languageEnglish
Title of host publicationProceedings of IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society
Number of pages7
PublisherIEEE Press
Publication dateOct 2018
Pages5290-5296
ISBN (Print)978-1-5090-6685-8
ISBN (Electronic)978-1-5090-6684-1
DOIs
Publication statusPublished - Oct 2018
Event44th Annual Conference of the IEEE Industrial Electronics Society - Omni Shoreham Hotel, Washington, United States
Duration: 21 Oct 201823 Oct 2018
http://www.iecon2018.org/

Conference

Conference44th Annual Conference of the IEEE Industrial Electronics Society
LocationOmni Shoreham Hotel
CountryUnited States
CityWashington
Period21/10/201823/10/2018
Internet address
SeriesProceedings of the Annual Conference of the IEEE Industrial Electronics Society
ISSN1553-572X

Fingerprint

Topology
Electric potential
Model predictive control
Semiconductor devices
Stress concentration
Diodes
Switches
Hot Temperature
Temperature

Cite this

Novak, M., Dragicevic, T., & Blaabjerg, F. (2018). Finite Set MPC Algorithm for Achieving Thermal Redistribution in a Neutral-Point-Clamped Converter. In Proceedings of IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society (pp. 5290-5296). IEEE Press. Proceedings of the Annual Conference of the IEEE Industrial Electronics Society https://doi.org/10.1109/IECON.2018.8591148
Novak, Mateja ; Dragicevic, Tomislav ; Blaabjerg, Frede. / Finite Set MPC Algorithm for Achieving Thermal Redistribution in a Neutral-Point-Clamped Converter. Proceedings of IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society. IEEE Press, 2018. pp. 5290-5296 (Proceedings of the Annual Conference of the IEEE Industrial Electronics Society).
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abstract = "The three level neutral-point clamped (3L-NPC) topology is one of the most widely used multilevel topologies in the low and medium voltage applications and also one of the most commercialized topologies. Although it offers many benefits compared to the conventional two level topology, it suffers from a considerable unequal loss distribution among the inner and outer switches and the clamping diodes. To solve this problem, we are proposing a control algorithm based on the finite control set model predictive control (FCS-MPC) that can provide a more balanced stress distribution. For implementing the proposed control algorithm no additional measurements are required nor thermal models of the semiconductor devices. The algorithm benefits are even more noticeable during low voltage ride through (LVRT) scenarios when the output voltage level of the converter is low and the current amplitude is high. Obtained simulation results confirm the positive effects on the thermal redistribution and also the junction temperatures of the most stressed devices are reduced. Effects of the algorithm are also verified on an experimental set-up.",
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Novak, M, Dragicevic, T & Blaabjerg, F 2018, Finite Set MPC Algorithm for Achieving Thermal Redistribution in a Neutral-Point-Clamped Converter. in Proceedings of IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society. IEEE Press, Proceedings of the Annual Conference of the IEEE Industrial Electronics Society, pp. 5290-5296, 44th Annual Conference of the IEEE Industrial Electronics Society, Washington, United States, 21/10/2018. https://doi.org/10.1109/IECON.2018.8591148

Finite Set MPC Algorithm for Achieving Thermal Redistribution in a Neutral-Point-Clamped Converter. / Novak, Mateja; Dragicevic, Tomislav; Blaabjerg, Frede.

Proceedings of IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society. IEEE Press, 2018. p. 5290-5296 (Proceedings of the Annual Conference of the IEEE Industrial Electronics Society).

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

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AB - The three level neutral-point clamped (3L-NPC) topology is one of the most widely used multilevel topologies in the low and medium voltage applications and also one of the most commercialized topologies. Although it offers many benefits compared to the conventional two level topology, it suffers from a considerable unequal loss distribution among the inner and outer switches and the clamping diodes. To solve this problem, we are proposing a control algorithm based on the finite control set model predictive control (FCS-MPC) that can provide a more balanced stress distribution. For implementing the proposed control algorithm no additional measurements are required nor thermal models of the semiconductor devices. The algorithm benefits are even more noticeable during low voltage ride through (LVRT) scenarios when the output voltage level of the converter is low and the current amplitude is high. Obtained simulation results confirm the positive effects on the thermal redistribution and also the junction temperatures of the most stressed devices are reduced. Effects of the algorithm are also verified on an experimental set-up.

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Novak M, Dragicevic T, Blaabjerg F. Finite Set MPC Algorithm for Achieving Thermal Redistribution in a Neutral-Point-Clamped Converter. In Proceedings of IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society. IEEE Press. 2018. p. 5290-5296. (Proceedings of the Annual Conference of the IEEE Industrial Electronics Society). https://doi.org/10.1109/IECON.2018.8591148