Adaptive Switching Frequency Selection Based on Two-Step Efficiency Optimization for Grid-Connected Inverters

A two-step efficiency optimization of a three-phase voltage source inverter with series R damped LCL filter is proposed. The first optimization step aims to find the optimal parameters of the series R damped LCL filter at rated load conditions. The objective function of step-one is to minimize the v...

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Autores principales:	Ahmed Koran, Saher Albatran, Doaa Alshorman
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2021
Materias:	Voltage source inverter (VSI) passive filters teaching-learning-based optimization (TLBO) core losses Electrical engineering. Electronics. Nuclear engineering TK1-9971
Acceso en línea:	https://doaj.org/article/4943b3e1a953411f924e3b1a2f064993
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spelling	oai:doaj.org-article:4943b3e1a953411f924e3b1a2f0649932021-11-17T00:00:51ZAdaptive Switching Frequency Selection Based on Two-Step Efficiency Optimization for Grid-Connected Inverters2169-353610.1109/ACCESS.2021.3126378https://doaj.org/article/4943b3e1a953411f924e3b1a2f0649932021-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9606681/https://doaj.org/toc/2169-3536A two-step efficiency optimization of a three-phase voltage source inverter with series R damped LCL filter is proposed. The first optimization step aims to find the optimal parameters of the series R damped LCL filter at rated load conditions. The objective function of step-one is to minimize the values of the passive elements of the filter-stage. Afterward, the magnetic cores of inductors are thoroughly designed using soft magnetic powder materials. This design is proposed to specify the smallest core-size required based on the value of the inductance found in step-one of the optimization. The second optimization step aims to optimally select the switching frequency of the inverter-stage considering load variations. This optimization is based on the optimized filter-stage parameters. The proposed objective function of step-two aims to minimize the power losses in the inverter-stage and filter-stage while limiting the harmonic-levels at the point of common coupling. Detailed loss-formulation including filter-stage core and copper losses is thoroughly presented. Teaching-learning-based optimization algorithm is adopted to perform the optimization problem. Experiment and simulation are done to justify the proposed optimization procedure.Ahmed KoranSaher AlbatranDoaa AlshormanIEEEarticleVoltage source inverter (VSI)passive filtersteaching-learning-based optimization (TLBO)core lossesElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENIEEE Access, Vol 9, Pp 151741-151752 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Voltage source inverter (VSI) passive filters teaching-learning-based optimization (TLBO) core losses Electrical engineering. Electronics. Nuclear engineering TK1-9971
spellingShingle	Voltage source inverter (VSI) passive filters teaching-learning-based optimization (TLBO) core losses Electrical engineering. Electronics. Nuclear engineering TK1-9971 Ahmed Koran Saher Albatran Doaa Alshorman Adaptive Switching Frequency Selection Based on Two-Step Efficiency Optimization for Grid-Connected Inverters
description	A two-step efficiency optimization of a three-phase voltage source inverter with series R damped LCL filter is proposed. The first optimization step aims to find the optimal parameters of the series R damped LCL filter at rated load conditions. The objective function of step-one is to minimize the values of the passive elements of the filter-stage. Afterward, the magnetic cores of inductors are thoroughly designed using soft magnetic powder materials. This design is proposed to specify the smallest core-size required based on the value of the inductance found in step-one of the optimization. The second optimization step aims to optimally select the switching frequency of the inverter-stage considering load variations. This optimization is based on the optimized filter-stage parameters. The proposed objective function of step-two aims to minimize the power losses in the inverter-stage and filter-stage while limiting the harmonic-levels at the point of common coupling. Detailed loss-formulation including filter-stage core and copper losses is thoroughly presented. Teaching-learning-based optimization algorithm is adopted to perform the optimization problem. Experiment and simulation are done to justify the proposed optimization procedure.
format	article
author	Ahmed Koran Saher Albatran Doaa Alshorman
author_facet	Ahmed Koran Saher Albatran Doaa Alshorman
author_sort	Ahmed Koran
title	Adaptive Switching Frequency Selection Based on Two-Step Efficiency Optimization for Grid-Connected Inverters
title_short	Adaptive Switching Frequency Selection Based on Two-Step Efficiency Optimization for Grid-Connected Inverters
title_full	Adaptive Switching Frequency Selection Based on Two-Step Efficiency Optimization for Grid-Connected Inverters
title_fullStr	Adaptive Switching Frequency Selection Based on Two-Step Efficiency Optimization for Grid-Connected Inverters
title_full_unstemmed	Adaptive Switching Frequency Selection Based on Two-Step Efficiency Optimization for Grid-Connected Inverters
title_sort	adaptive switching frequency selection based on two-step efficiency optimization for grid-connected inverters
publisher	IEEE
publishDate	2021
url	https://doaj.org/article/4943b3e1a953411f924e3b1a2f064993
work_keys_str_mv	AT ahmedkoran adaptiveswitchingfrequencyselectionbasedontwostepefficiencyoptimizationforgridconnectedinverters AT saheralbatran adaptiveswitchingfrequencyselectionbasedontwostepefficiencyoptimizationforgridconnectedinverters AT doaaalshorman adaptiveswitchingfrequencyselectionbasedontwostepefficiencyoptimizationforgridconnectedinverters
_version_	1718426045329178624

Adaptive Switching Frequency Selection Based on Two-Step Efficiency Optimization for Grid-Connected Inverters

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