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Title: Matching of a dc motor to a photovoltaic generator using a step-up converter with a current-locked loop

Abstract

A photovoltaic (PV) generator is a nonlinear device having insolation-dependent volt-ampere characteristics. Because of its relatively high cost, the system designer is interested in optimum matching of the motor and its mechanical load to the PV generator so that maximum power is obtained during the entire operating period. However, since the maximum-power point varies with solar insolation, it is difficult to achieve an optimum matching that is valid for all insolation levels. In this paper it is shown that for maximum power, the generator current must be directly proportional to insolation. This remarkable property is utilized to achieve insolation-independent optimum matching. A shunt dc motor driving a centrifugal water pump is supplied from a PV generator via a step-up converter whose duty ratio is controlled using a current-locked feedback loop.

Authors:
 [1]
  1. (King Saud Univ., Riyadh (Saudi Arabia))
Publication Date:
OSTI Identifier:
7023504
Resource Type:
Journal Article
Journal Name:
IEEE Transactions on Energy Conversion (Institute of Electrical and Electronics Engineers); (United States)
Additional Journal Information:
Journal Volume: 9:1; Journal ID: ISSN 0885-8969
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; ELECTRIC MOTORS; PHOTOVOLTAIC POWER SUPPLIES; SIZING; CONTROL THEORY; PUMPS; ELECTRONIC EQUIPMENT; ENGINES; EQUIPMENT; MOTORS; POWER SUPPLIES; SOLAR EQUIPMENT; 140600* - Solar Energy- Photovoltaic Power Systems

Citation Formats

Alghuwainem, S.M.. Matching of a dc motor to a photovoltaic generator using a step-up converter with a current-locked loop. United States: N. p., 1994. Web. doi:10.1109/60.282492.
Alghuwainem, S.M.. Matching of a dc motor to a photovoltaic generator using a step-up converter with a current-locked loop. United States. doi:10.1109/60.282492.
Alghuwainem, S.M.. Tue . "Matching of a dc motor to a photovoltaic generator using a step-up converter with a current-locked loop". United States. doi:10.1109/60.282492.
@article{osti_7023504,
title = {Matching of a dc motor to a photovoltaic generator using a step-up converter with a current-locked loop},
author = {Alghuwainem, S.M.},
abstractNote = {A photovoltaic (PV) generator is a nonlinear device having insolation-dependent volt-ampere characteristics. Because of its relatively high cost, the system designer is interested in optimum matching of the motor and its mechanical load to the PV generator so that maximum power is obtained during the entire operating period. However, since the maximum-power point varies with solar insolation, it is difficult to achieve an optimum matching that is valid for all insolation levels. In this paper it is shown that for maximum power, the generator current must be directly proportional to insolation. This remarkable property is utilized to achieve insolation-independent optimum matching. A shunt dc motor driving a centrifugal water pump is supplied from a PV generator via a step-up converter whose duty ratio is controlled using a current-locked feedback loop.},
doi = {10.1109/60.282492},
journal = {IEEE Transactions on Energy Conversion (Institute of Electrical and Electronics Engineers); (United States)},
issn = {0885-8969},
number = ,
volume = 9:1,
place = {United States},
year = {1994},
month = {3}
}