Maximizing power harvest in a distributed photovoltaic system

Yong Sin Kim; Sung Mo Kang; Roland Winston

doi:10.1109/ISCAS.2012.6271747

Maximizing power harvest in a distributed photovoltaic system

Yong Sin Kim, Sung Mo Kang, Roland Winston

Research output: Contribution to conference › Paper › peer-review

1 Citation (Scopus)

Abstract

In a conventional grid-tied distributed photovoltaic (PV) system, individual power optimizers are used for modules connected in series to maximize energy harvest from each module. However each power optimizer lacks information on the string voltage and thus an inverter is designed to control the string voltage. This scheme is not guaranteed to have the maximum energy harvest in a PV system since the efficiency of an inverter is dependent not only on the string voltage but also on the string current. To improve the overall system efficiency, this paper presents a dual power optimization scheme for grid-tied distributed PV systems. It uses a power optimizer with feedback from the output of an inverter which controls the string voltage dynamically. We compare the proposed conversion system with the conventional distributed system in view of efficiency using simulation of commercial products.

Original language	English
Pages	2275-2278
Number of pages	4
DOIs	https://doi.org/10.1109/ISCAS.2012.6271747
Publication status	Published - 2012
Externally published	Yes
Event	2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012 - Seoul, Korea, Republic of Duration: 2012 May 20 → 2012 May 23

Other

Other	2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012
Country/Territory	Korea, Republic of
City	Seoul
Period	12/5/20 → 12/5/23

ASJC Scopus subject areas

Hardware and Architecture
Electrical and Electronic Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1109/ISCAS.2012.6271747

Cite this

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title = "Maximizing power harvest in a distributed photovoltaic system",

abstract = "In a conventional grid-tied distributed photovoltaic (PV) system, individual power optimizers are used for modules connected in series to maximize energy harvest from each module. However each power optimizer lacks information on the string voltage and thus an inverter is designed to control the string voltage. This scheme is not guaranteed to have the maximum energy harvest in a PV system since the efficiency of an inverter is dependent not only on the string voltage but also on the string current. To improve the overall system efficiency, this paper presents a dual power optimization scheme for grid-tied distributed PV systems. It uses a power optimizer with feedback from the output of an inverter which controls the string voltage dynamically. We compare the proposed conversion system with the conventional distributed system in view of efficiency using simulation of commercial products.",

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year = "2012",

doi = "10.1109/ISCAS.2012.6271747",

language = "English",

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AU - Kim, Yong Sin

AU - Kang, Sung Mo

AU - Winston, Roland

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AB - In a conventional grid-tied distributed photovoltaic (PV) system, individual power optimizers are used for modules connected in series to maximize energy harvest from each module. However each power optimizer lacks information on the string voltage and thus an inverter is designed to control the string voltage. This scheme is not guaranteed to have the maximum energy harvest in a PV system since the efficiency of an inverter is dependent not only on the string voltage but also on the string current. To improve the overall system efficiency, this paper presents a dual power optimization scheme for grid-tied distributed PV systems. It uses a power optimizer with feedback from the output of an inverter which controls the string voltage dynamically. We compare the proposed conversion system with the conventional distributed system in view of efficiency using simulation of commercial products.

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T2 - 2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012

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Maximizing power harvest in a distributed photovoltaic system

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UN SDGs

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