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Effect of timing and voltage dependency on inverter sizing

The effects of environmental data time steps and inverter’s voltage dependency on optimum inverter sizing are investigated in this paper. Three sites in the Europe with the specific climates and two detailed inverter characteristics including its dependence on the DC voltage during the operation are...

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Main Authors: Jiang Zhu, Jyotirmoy Roy, Roland Brundlinger, Antoine Guerin de Montgareuil, Mathieu David, Thomas Muhlberger, Thomas R. Betts, Ralph Gottschalg
Format: Default Conference proceeding
Published: 2008
Subjects:
Online Access:https://hdl.handle.net/2134/5206
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author Jiang Zhu
Jyotirmoy Roy
Roland Brundlinger
Antoine Guerin de Montgareuil
Mathieu David
Thomas Muhlberger
Thomas R. Betts
Ralph Gottschalg
author_facet Jiang Zhu
Jyotirmoy Roy
Roland Brundlinger
Antoine Guerin de Montgareuil
Mathieu David
Thomas Muhlberger
Thomas R. Betts
Ralph Gottschalg
author_sort Jiang Zhu (1253214)
collection Figshare
description The effects of environmental data time steps and inverter’s voltage dependency on optimum inverter sizing are investigated in this paper. Three sites in the Europe with the specific climates and two detailed inverter characteristics including its dependence on the DC voltage during the operation are taken into account to demonstrate the differences in the inverter sizing required to allow for the site and inverter specifics. A model of a PV system linked to an inverter is developed to assess and optimise how the different factors influence the correct sizing of a given PV system. The environmental data with time resolution higher than 10 minutes is recommended since low frequency data (hourly data), which might ignore the irradiance peaks and underestimate up to 2.7% of total annual energy at high irradiances, cannot guarantee the correct sizing ratio of inverter. Inverter efficiencies change up to 1 to 3% as a function of input voltage which needs to be considered in inverter sizing. The overall inverter behaviour is also crucial in order to size appropriately. It is shown that some inverters perform better with undersizing, some better with oversizing.
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Conference proceeding
id rr-article-9546128
institution Loughborough University
publishDate 2008
record_format Figshare
spelling rr-article-95461282008-01-01T00:00:00Z Effect of timing and voltage dependency on inverter sizing Jiang Zhu (1253214) Jyotirmoy Roy (1257567) Roland Brundlinger (7205465) Antoine Guerin de Montgareuil (7205468) Mathieu David (7205471) Thomas Muhlberger (7205474) Thomas R. Betts (7164998) Ralph Gottschalg (1247661) Mechanical engineering not elsewhere classified Inverter Sizing Optimization Voltage dependency Time resolution Mechanical Engineering not elsewhere classified The effects of environmental data time steps and inverter’s voltage dependency on optimum inverter sizing are investigated in this paper. Three sites in the Europe with the specific climates and two detailed inverter characteristics including its dependence on the DC voltage during the operation are taken into account to demonstrate the differences in the inverter sizing required to allow for the site and inverter specifics. A model of a PV system linked to an inverter is developed to assess and optimise how the different factors influence the correct sizing of a given PV system. The environmental data with time resolution higher than 10 minutes is recommended since low frequency data (hourly data), which might ignore the irradiance peaks and underestimate up to 2.7% of total annual energy at high irradiances, cannot guarantee the correct sizing ratio of inverter. Inverter efficiencies change up to 1 to 3% as a function of input voltage which needs to be considered in inverter sizing. The overall inverter behaviour is also crucial in order to size appropriately. It is shown that some inverters perform better with undersizing, some better with oversizing. 2008-01-01T00:00:00Z Text Conference contribution 2134/5206 https://figshare.com/articles/conference_contribution/Effect_of_timing_and_voltage_dependency_on_inverter_sizing/9546128 CC BY-NC-ND 4.0
spellingShingle Mechanical engineering not elsewhere classified
Inverter
Sizing
Optimization
Voltage dependency
Time resolution
Mechanical Engineering not elsewhere classified
Jiang Zhu
Jyotirmoy Roy
Roland Brundlinger
Antoine Guerin de Montgareuil
Mathieu David
Thomas Muhlberger
Thomas R. Betts
Ralph Gottschalg
Effect of timing and voltage dependency on inverter sizing
title Effect of timing and voltage dependency on inverter sizing
title_full Effect of timing and voltage dependency on inverter sizing
title_fullStr Effect of timing and voltage dependency on inverter sizing
title_full_unstemmed Effect of timing and voltage dependency on inverter sizing
title_short Effect of timing and voltage dependency on inverter sizing
title_sort effect of timing and voltage dependency on inverter sizing
topic Mechanical engineering not elsewhere classified
Inverter
Sizing
Optimization
Voltage dependency
Time resolution
Mechanical Engineering not elsewhere classified
url https://hdl.handle.net/2134/5206