Power Conversion System Operation Algorithm for Efficient Energy Management of Microgrids

This paper investigates the operation of each power conversion system (PCS) for efficient energy management systems (EMSs) of microgrids (MGs). When MGs are linked to renewable energy sources (RESs), the reduction in power conversion efficiency can be minimized. Furthermore, energy storage systems (...

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Autores principales:	Kwang-Su Na, Jeong Lee, Jun-Mo Kim, Yoon-Seong Lee, Junsin Yi, Chung-Yuen Won
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	microgrid (MG) energy management system (EMS) power conversion system (PCS) PV-DESS integrated module main energy storage system (MESS) Electronics TK7800-8360
Acceso en línea:	https://doaj.org/article/b6d9ac3bfe094cb88e9371e824dd3c29
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spelling	oai:doaj.org-article:b6d9ac3bfe094cb88e9371e824dd3c292021-11-25T17:24:41ZPower Conversion System Operation Algorithm for Efficient Energy Management of Microgrids10.3390/electronics102227912079-9292https://doaj.org/article/b6d9ac3bfe094cb88e9371e824dd3c292021-11-01T00:00:00Zhttps://www.mdpi.com/2079-9292/10/22/2791https://doaj.org/toc/2079-9292This paper investigates the operation of each power conversion system (PCS) for efficient energy management systems (EMSs) of microgrids (MGs). When MGs are linked to renewable energy sources (RESs), the reduction in power conversion efficiency can be minimized. Furthermore, energy storage systems (ESSs) are utilized to manage the surplus power of RESs. Thus, the present work presents a method to minimize the use of the existing power grid and increase the utilization rate of energy generated through RESs. To minimize the use of the existing power grid, a PCS operation method for photovoltaics (PV) and ESS used in MGs is proposed. PV, when it is directly connected as an intermittent energy source, induces voltage fluctuations in the distribution network. Thus, to overcome this shortcoming, this paper utilizes a system that connects PV and a distributed energy storage system (DESS). A PV-DESS integrated module is designed and controlled for tracking constant power. In addition, the DESS serves to compensate for the insufficient power generation of PV. The main energy storage systems (MESSs) used in MGs affect all aspects of the power management in the system. Because MGs perform their operations based on the capacity of the MESS, a PCS designed with a large capacity is utilized to stably operate the system. Because the MESS performs energy management through operations under various load conditions, it must have constant efficiency under all load conditions. Therefore, this paper proposes a PCS operation algorithm with constant efficiency for the MESS. Utilizing the operation algorithm of each PCS, this paper describes the efficient energy management of the MG and further proposes an algorithm for operating the existing power grid at the minimum level.Kwang-Su NaJeong LeeJun-Mo KimYoon-Seong LeeJunsin YiChung-Yuen WonMDPI AGarticlemicrogrid (MG)energy management system (EMS)power conversion system (PCS)PV-DESS integrated modulemain energy storage system (MESS)ElectronicsTK7800-8360ENElectronics, Vol 10, Iss 2791, p 2791 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	microgrid (MG) energy management system (EMS) power conversion system (PCS) PV-DESS integrated module main energy storage system (MESS) Electronics TK7800-8360
spellingShingle	microgrid (MG) energy management system (EMS) power conversion system (PCS) PV-DESS integrated module main energy storage system (MESS) Electronics TK7800-8360 Kwang-Su Na Jeong Lee Jun-Mo Kim Yoon-Seong Lee Junsin Yi Chung-Yuen Won Power Conversion System Operation Algorithm for Efficient Energy Management of Microgrids
description	This paper investigates the operation of each power conversion system (PCS) for efficient energy management systems (EMSs) of microgrids (MGs). When MGs are linked to renewable energy sources (RESs), the reduction in power conversion efficiency can be minimized. Furthermore, energy storage systems (ESSs) are utilized to manage the surplus power of RESs. Thus, the present work presents a method to minimize the use of the existing power grid and increase the utilization rate of energy generated through RESs. To minimize the use of the existing power grid, a PCS operation method for photovoltaics (PV) and ESS used in MGs is proposed. PV, when it is directly connected as an intermittent energy source, induces voltage fluctuations in the distribution network. Thus, to overcome this shortcoming, this paper utilizes a system that connects PV and a distributed energy storage system (DESS). A PV-DESS integrated module is designed and controlled for tracking constant power. In addition, the DESS serves to compensate for the insufficient power generation of PV. The main energy storage systems (MESSs) used in MGs affect all aspects of the power management in the system. Because MGs perform their operations based on the capacity of the MESS, a PCS designed with a large capacity is utilized to stably operate the system. Because the MESS performs energy management through operations under various load conditions, it must have constant efficiency under all load conditions. Therefore, this paper proposes a PCS operation algorithm with constant efficiency for the MESS. Utilizing the operation algorithm of each PCS, this paper describes the efficient energy management of the MG and further proposes an algorithm for operating the existing power grid at the minimum level.
format	article
author	Kwang-Su Na Jeong Lee Jun-Mo Kim Yoon-Seong Lee Junsin Yi Chung-Yuen Won
author_facet	Kwang-Su Na Jeong Lee Jun-Mo Kim Yoon-Seong Lee Junsin Yi Chung-Yuen Won
author_sort	Kwang-Su Na
title	Power Conversion System Operation Algorithm for Efficient Energy Management of Microgrids
title_short	Power Conversion System Operation Algorithm for Efficient Energy Management of Microgrids
title_full	Power Conversion System Operation Algorithm for Efficient Energy Management of Microgrids
title_fullStr	Power Conversion System Operation Algorithm for Efficient Energy Management of Microgrids
title_full_unstemmed	Power Conversion System Operation Algorithm for Efficient Energy Management of Microgrids
title_sort	power conversion system operation algorithm for efficient energy management of microgrids
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/b6d9ac3bfe094cb88e9371e824dd3c29
work_keys_str_mv	AT kwangsuna powerconversionsystemoperationalgorithmforefficientenergymanagementofmicrogrids AT jeonglee powerconversionsystemoperationalgorithmforefficientenergymanagementofmicrogrids AT junmokim powerconversionsystemoperationalgorithmforefficientenergymanagementofmicrogrids AT yoonseonglee powerconversionsystemoperationalgorithmforefficientenergymanagementofmicrogrids AT junsinyi powerconversionsystemoperationalgorithmforefficientenergymanagementofmicrogrids AT chungyuenwon powerconversionsystemoperationalgorithmforefficientenergymanagementofmicrogrids
_version_	1718412430511439872

Power Conversion System Operation Algorithm for Efficient Energy Management of Microgrids

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