A retrofit circuit to increase output power of PV system during partial shading condition
In a typical photovoltaic (PV) distributed generation system, when part of the PV module is shaded, the bypass diode (that is connected in parallel to it) is used to protect the module from hot-spot damages. However, by employing this diode, the output power is reduced significantly because the powe...
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my.utm.455082017-08-28T01:06:19Z http://eprints.utm.my/id/eprint/45508/ A retrofit circuit to increase output power of PV system during partial shading condition Salam, Zainal Ramli, M. Z. TK Electrical engineering. Electronics Nuclear engineering In a typical photovoltaic (PV) distributed generation system, when part of the PV module is shaded, the bypass diode (that is connected in parallel to it) is used to protect the module from hot-spot damages. However, by employing this diode, the output power is reduced significantly because the power generated from the shaded module is totally unusable. Furthermore, when the current flows through the bypass diode, conduction losses occur which further degrade the system efficiency. In this paper, a simple retrofit circuit is proposed to increase the output power of PV system under partial shading condition. The idea is to utilize the current generated by the shaded module, detour it to a power electronics circuit and then process it to become part of the output power. Consequently, the inclusion of the retrofit circuit enables to system to deliver more power compared to the bypass diode method. Simulation results show marked improvement in the efficiency, especially under heavy partial shading condition. 2011 Conference or Workshop Item PeerReviewed Salam, Zainal and Ramli, M. Z. (2011) A retrofit circuit to increase output power of PV system during partial shading condition. In: First IEEE-Pes Conference In Middle East On Innovative Smart Grid Technologies (ISGT 2011). http://dx.doi.org/10.1109/ISGT-MidEast.2011.6220795 |
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TK Electrical engineering. Electronics Nuclear engineering Salam, Zainal Ramli, M. Z. A retrofit circuit to increase output power of PV system during partial shading condition |
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In a typical photovoltaic (PV) distributed generation system, when part of the PV module is shaded, the bypass diode (that is connected in parallel to it) is used to protect the module from hot-spot damages. However, by employing this diode, the output power is reduced significantly because the power generated from the shaded module is totally unusable. Furthermore, when the current flows through the bypass diode, conduction losses occur which further degrade the system efficiency. In this paper, a simple retrofit circuit is proposed to increase the output power of PV system under partial shading condition. The idea is to utilize the current generated by the shaded module, detour it to a power electronics circuit and then process it to become part of the output power. Consequently, the inclusion of the retrofit circuit enables to system to deliver more power compared to the bypass diode method. Simulation results show marked improvement in the efficiency, especially under heavy partial shading condition. |
format |
Conference or Workshop Item |
author |
Salam, Zainal Ramli, M. Z. |
author_facet |
Salam, Zainal Ramli, M. Z. |
author_sort |
Salam, Zainal |
title |
A retrofit circuit to increase output power of PV system during partial shading condition |
title_short |
A retrofit circuit to increase output power of PV system during partial shading condition |
title_full |
A retrofit circuit to increase output power of PV system during partial shading condition |
title_fullStr |
A retrofit circuit to increase output power of PV system during partial shading condition |
title_full_unstemmed |
A retrofit circuit to increase output power of PV system during partial shading condition |
title_sort |
retrofit circuit to increase output power of pv system during partial shading condition |
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2011 |
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http://eprints.utm.my/id/eprint/45508/ http://dx.doi.org/10.1109/ISGT-MidEast.2011.6220795 |
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1643651761321279488 |
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13.188404 |