Equivalent temperature estimation‐based FCS‐MPC for thermal stress balance of 3L‐NPC traction inverter

Abstract This paper proposes an equivalent temperature estimation‐based finite control set model predictive control (ETE‐FCS‐MPC) method to balance the thermal stress among transistors in three level neutral point clamp (3L‐NPC) traction inverters, which can be used to prolong the whole service life...

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Main Authors: Tao Peng, Yansong Xu, Chao Yang, Feiran Xie, Hongwei Tao, Chunhua Yang
Format: Article
Language:English
Published: Wiley 2021-11-01
Series:IET Power Electronics
Subjects:
Online Access:https://doi.org/10.1049/pel2.12182
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author Tao Peng
Yansong Xu
Chao Yang
Feiran Xie
Hongwei Tao
Chunhua Yang
author_facet Tao Peng
Yansong Xu
Chao Yang
Feiran Xie
Hongwei Tao
Chunhua Yang
author_sort Tao Peng
collection DOAJ
description Abstract This paper proposes an equivalent temperature estimation‐based finite control set model predictive control (ETE‐FCS‐MPC) method to balance the thermal stress among transistors in three level neutral point clamp (3L‐NPC) traction inverters, which can be used to prolong the whole service life and improve the reliability of the traction inverter. Compared with other methods, the proposed ETE‐FCS‐MPC method requires lesser calculation without additional sensor. Firstly, an energy loss‐based equivalent temperature estimation method is proposed to avoid the complexity of junction temperature prediction. Secondly, an energy variance‐based thermal stress balance control objective is introduced. Then, a normalized evaluation function is established to select the optimal switching state. Finally, the effectiveness of this method is verified on hardware‐in‐the‐loop tests.
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spelling doaj.art-5d3afec6777f4c8f95d13602d2cd3dbd2022-12-22T04:33:21ZengWileyIET Power Electronics1755-45351755-45432021-11-0114142314232310.1049/pel2.12182Equivalent temperature estimation‐based FCS‐MPC for thermal stress balance of 3L‐NPC traction inverterTao Peng0Yansong Xu1Chao Yang2Feiran Xie3Hongwei Tao4Chunhua Yang5School of Automation Central South University Changsha ChinaSchool of Automation Central South University Changsha ChinaSchool of Automation Central South University Changsha ChinaSchool of Automation Central South University Changsha ChinaSchool of Automation Central South University Changsha ChinaSchool of Automation Central South University Changsha ChinaAbstract This paper proposes an equivalent temperature estimation‐based finite control set model predictive control (ETE‐FCS‐MPC) method to balance the thermal stress among transistors in three level neutral point clamp (3L‐NPC) traction inverters, which can be used to prolong the whole service life and improve the reliability of the traction inverter. Compared with other methods, the proposed ETE‐FCS‐MPC method requires lesser calculation without additional sensor. Firstly, an energy loss‐based equivalent temperature estimation method is proposed to avoid the complexity of junction temperature prediction. Secondly, an energy variance‐based thermal stress balance control objective is introduced. Then, a normalized evaluation function is established to select the optimal switching state. Finally, the effectiveness of this method is verified on hardware‐in‐the‐loop tests.https://doi.org/10.1049/pel2.12182Power electronics, supply and supervisory circuitsControl of electric power systemsPower convertors and power supplies to apparatusOptimal control3L‐NPC traction inverterenergy loss
spellingShingle Tao Peng
Yansong Xu
Chao Yang
Feiran Xie
Hongwei Tao
Chunhua Yang
Equivalent temperature estimation‐based FCS‐MPC for thermal stress balance of 3L‐NPC traction inverter
IET Power Electronics
Power electronics, supply and supervisory circuits
Control of electric power systems
Power convertors and power supplies to apparatus
Optimal control
3L‐NPC traction inverter
energy loss
title Equivalent temperature estimation‐based FCS‐MPC for thermal stress balance of 3L‐NPC traction inverter
title_full Equivalent temperature estimation‐based FCS‐MPC for thermal stress balance of 3L‐NPC traction inverter
title_fullStr Equivalent temperature estimation‐based FCS‐MPC for thermal stress balance of 3L‐NPC traction inverter
title_full_unstemmed Equivalent temperature estimation‐based FCS‐MPC for thermal stress balance of 3L‐NPC traction inverter
title_short Equivalent temperature estimation‐based FCS‐MPC for thermal stress balance of 3L‐NPC traction inverter
title_sort equivalent temperature estimation based fcs mpc for thermal stress balance of 3l npc traction inverter
topic Power electronics, supply and supervisory circuits
Control of electric power systems
Power convertors and power supplies to apparatus
Optimal control
3L‐NPC traction inverter
energy loss
url https://doi.org/10.1049/pel2.12182
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