Multi-segment fuzzy control for start-up optimizing of LCC-based high-voltage power supply

Widely applied in medical, industrial, and military fields, the high-voltage power supply based on LCC resonant converter (LCC) is ought to establish tens kilovolts of output voltage within milliseconds according to many standards. And any overshoot during this start-up process is not allowed becaus...

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Autores principales:	Jun Zhao, Lianghao Li, Zhenyu Li, Zheng Chen, Long Xiao, Guozhu Chen
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2022
Materias:	LCC resonant converter High-voltage power supply Optimized start-up Fuzzy algorithm Multi-segment Electrical engineering. Electronics. Nuclear engineering TK1-9971
Acceso en línea:	https://doaj.org/article/a116ea8016594305ab6ee68ff428e93c
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spelling	oai:doaj.org-article:a116ea8016594305ab6ee68ff428e93c2021-12-04T04:35:11ZMulti-segment fuzzy control for start-up optimizing of LCC-based high-voltage power supply2352-484710.1016/j.egyr.2021.11.166https://doaj.org/article/a116ea8016594305ab6ee68ff428e93c2022-04-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2352484721013135https://doaj.org/toc/2352-4847Widely applied in medical, industrial, and military fields, the high-voltage power supply based on LCC resonant converter (LCC) is ought to establish tens kilovolts of output voltage within milliseconds according to many standards. And any overshoot during this start-up process is not allowed because of the issue or even deadly consequence it may lead. Traditional linear control schemes are powerless to fulfill these two conflicting requirements, especially for the LCC with nonlinear gain characteristics. In this paper, a multi-segment fuzzy control is proposed to tackle this problem. Firstly, the nonlinear gain curve of LCC is piecewise linearized based on its large-signal model, and the control requirements for different segments are determined. Then the control parameters for each part are selected by an off-line fuzzy algorithm. The allowed minimum frequency during the start-up is also piecewise linearized so that the gain ability of LCC is utilized. Finally, the proposed control scheme is verified with an 80kW/150kV X-ray power supply. A low-cost controller is used to implement the start-up control scheme since the control parameters can be pre-calculated and stored in the controller. Compared with the commonly used linear PI control, the non-overshoot start-up time with the proposed control scheme is reduced by more than 60%.Jun ZhaoLianghao LiZhenyu LiZheng ChenLong XiaoGuozhu ChenElsevierarticleLCC resonant converterHigh-voltage power supplyOptimized start-upFuzzy algorithmMulti-segmentElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENEnergy Reports, Vol 8, Iss , Pp 552-559 (2022)
institution	DOAJ
collection	DOAJ
language	EN
topic	LCC resonant converter High-voltage power supply Optimized start-up Fuzzy algorithm Multi-segment Electrical engineering. Electronics. Nuclear engineering TK1-9971
spellingShingle	LCC resonant converter High-voltage power supply Optimized start-up Fuzzy algorithm Multi-segment Electrical engineering. Electronics. Nuclear engineering TK1-9971 Jun Zhao Lianghao Li Zhenyu Li Zheng Chen Long Xiao Guozhu Chen Multi-segment fuzzy control for start-up optimizing of LCC-based high-voltage power supply
description	Widely applied in medical, industrial, and military fields, the high-voltage power supply based on LCC resonant converter (LCC) is ought to establish tens kilovolts of output voltage within milliseconds according to many standards. And any overshoot during this start-up process is not allowed because of the issue or even deadly consequence it may lead. Traditional linear control schemes are powerless to fulfill these two conflicting requirements, especially for the LCC with nonlinear gain characteristics. In this paper, a multi-segment fuzzy control is proposed to tackle this problem. Firstly, the nonlinear gain curve of LCC is piecewise linearized based on its large-signal model, and the control requirements for different segments are determined. Then the control parameters for each part are selected by an off-line fuzzy algorithm. The allowed minimum frequency during the start-up is also piecewise linearized so that the gain ability of LCC is utilized. Finally, the proposed control scheme is verified with an 80kW/150kV X-ray power supply. A low-cost controller is used to implement the start-up control scheme since the control parameters can be pre-calculated and stored in the controller. Compared with the commonly used linear PI control, the non-overshoot start-up time with the proposed control scheme is reduced by more than 60%.
format	article
author	Jun Zhao Lianghao Li Zhenyu Li Zheng Chen Long Xiao Guozhu Chen
author_facet	Jun Zhao Lianghao Li Zhenyu Li Zheng Chen Long Xiao Guozhu Chen
author_sort	Jun Zhao
title	Multi-segment fuzzy control for start-up optimizing of LCC-based high-voltage power supply
title_short	Multi-segment fuzzy control for start-up optimizing of LCC-based high-voltage power supply
title_full	Multi-segment fuzzy control for start-up optimizing of LCC-based high-voltage power supply
title_fullStr	Multi-segment fuzzy control for start-up optimizing of LCC-based high-voltage power supply
title_full_unstemmed	Multi-segment fuzzy control for start-up optimizing of LCC-based high-voltage power supply
title_sort	multi-segment fuzzy control for start-up optimizing of lcc-based high-voltage power supply
publisher	Elsevier
publishDate	2022
url	https://doaj.org/article/a116ea8016594305ab6ee68ff428e93c
work_keys_str_mv	AT junzhao multisegmentfuzzycontrolforstartupoptimizingoflccbasedhighvoltagepowersupply AT lianghaoli multisegmentfuzzycontrolforstartupoptimizingoflccbasedhighvoltagepowersupply AT zhenyuli multisegmentfuzzycontrolforstartupoptimizingoflccbasedhighvoltagepowersupply AT zhengchen multisegmentfuzzycontrolforstartupoptimizingoflccbasedhighvoltagepowersupply AT longxiao multisegmentfuzzycontrolforstartupoptimizingoflccbasedhighvoltagepowersupply AT guozhuchen multisegmentfuzzycontrolforstartupoptimizingoflccbasedhighvoltagepowersupply
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Multi-segment fuzzy control for start-up optimizing of LCC-based high-voltage power supply

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