Cover Image

Methodology To Determine Photovoltaic Inverter Conversion Efficiency For The Equatorial Region

Photovoltaic inverter conversion efficiency is closely related to the energy yield of a photovoltaic system. Usually, the peak efficiency (ηmax) value from the inverter data sheet is used, but it is inaccurate because the inverter rarely operates at the peak power. The weighted efficiency is a prefe...

Full description

Saved in:
Bibliographic Details
Main Authors: Ab Rahman, Azhan, Salam, Zainal, Shaari, Sulaiman, Ramli, Mohd zulkifli
Format: Article
Language:English
Published: MDPI AG 2020
Online Access:http://eprints.utem.edu.my/id/eprint/24233/2/APPLSCI-10-00201-V2.PDF
http://eprints.utem.edu.my/id/eprint/24233/
https://www.mdpi.com/2076-3417/10/1/201
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.utem.eprints.24233
record_format eprints
spelling my.utem.eprints.242332020-07-30T10:42:18Z http://eprints.utem.edu.my/id/eprint/24233/ Methodology To Determine Photovoltaic Inverter Conversion Efficiency For The Equatorial Region Ab Rahman, Azhan Salam, Zainal Shaari, Sulaiman Ramli, Mohd zulkifli Photovoltaic inverter conversion efficiency is closely related to the energy yield of a photovoltaic system. Usually, the peak efficiency (ηmax) value from the inverter data sheet is used, but it is inaccurate because the inverter rarely operates at the peak power. The weighted efficiency is a preferable alternative as it inherently considers the power conversion characteristics of the inverter when subjected to varying irradiance. However, since the weighted efficiency is influenced by irradiance, its value may not be appropriate for different climatic conditions. Based on this premise, this work investigates the non-suitability of the European weighted efficiency (ηEURO) for inverters installed in the Equatorial region. It utilizes a one year data from the Equatorial irradiance profile to recalculate the value of ηEURO (ηEURO_recal) and to compare it with the original ηEURO. Furthermore, a new weighted efficiency formula for the Equatorial climate (ηEQUA) is proposed. Validation results showed that calculated energy yield with ηEQUA closely matched the real energy yield of 3 kW system with only 0.16% difference. It is envisaged that the usage of ηEQUA instead of ηmax or ηEURO will results in a more accurate energy yield and return of investment calculations for PV systems installed in Equatorial regions. MDPI AG 2020-12 Article PeerReviewed text en http://eprints.utem.edu.my/id/eprint/24233/2/APPLSCI-10-00201-V2.PDF Ab Rahman, Azhan and Salam, Zainal and Shaari, Sulaiman and Ramli, Mohd zulkifli (2020) Methodology To Determine Photovoltaic Inverter Conversion Efficiency For The Equatorial Region. Applied Sciences, 10 (1). pp. 1-16. ISSN 2076-3417 https://www.mdpi.com/2076-3417/10/1/201 10.3390/app10010201
institution Universiti Teknikal Malaysia Melaka
building UTEM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknikal Malaysia Melaka
content_source UTEM Institutional Repository
url_provider http://eprints.utem.edu.my/
language English
description Photovoltaic inverter conversion efficiency is closely related to the energy yield of a photovoltaic system. Usually, the peak efficiency (ηmax) value from the inverter data sheet is used, but it is inaccurate because the inverter rarely operates at the peak power. The weighted efficiency is a preferable alternative as it inherently considers the power conversion characteristics of the inverter when subjected to varying irradiance. However, since the weighted efficiency is influenced by irradiance, its value may not be appropriate for different climatic conditions. Based on this premise, this work investigates the non-suitability of the European weighted efficiency (ηEURO) for inverters installed in the Equatorial region. It utilizes a one year data from the Equatorial irradiance profile to recalculate the value of ηEURO (ηEURO_recal) and to compare it with the original ηEURO. Furthermore, a new weighted efficiency formula for the Equatorial climate (ηEQUA) is proposed. Validation results showed that calculated energy yield with ηEQUA closely matched the real energy yield of 3 kW system with only 0.16% difference. It is envisaged that the usage of ηEQUA instead of ηmax or ηEURO will results in a more accurate energy yield and return of investment calculations for PV systems installed in Equatorial regions.
format Article
author Ab Rahman, Azhan
Salam, Zainal
Shaari, Sulaiman
Ramli, Mohd zulkifli
spellingShingle Ab Rahman, Azhan
Salam, Zainal
Shaari, Sulaiman
Ramli, Mohd zulkifli
Methodology To Determine Photovoltaic Inverter Conversion Efficiency For The Equatorial Region
author_facet Ab Rahman, Azhan
Salam, Zainal
Shaari, Sulaiman
Ramli, Mohd zulkifli
author_sort Ab Rahman, Azhan
title Methodology To Determine Photovoltaic Inverter Conversion Efficiency For The Equatorial Region
title_short Methodology To Determine Photovoltaic Inverter Conversion Efficiency For The Equatorial Region
title_full Methodology To Determine Photovoltaic Inverter Conversion Efficiency For The Equatorial Region
title_fullStr Methodology To Determine Photovoltaic Inverter Conversion Efficiency For The Equatorial Region
title_full_unstemmed Methodology To Determine Photovoltaic Inverter Conversion Efficiency For The Equatorial Region
title_sort methodology to determine photovoltaic inverter conversion efficiency for the equatorial region
publisher MDPI AG
publishDate 2020
url http://eprints.utem.edu.my/id/eprint/24233/2/APPLSCI-10-00201-V2.PDF
http://eprints.utem.edu.my/id/eprint/24233/
https://www.mdpi.com/2076-3417/10/1/201
_version_ 1675330916723982336
score 13.211869

Similar Items