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Grid integration of wind-solar hybrid renewables using AC/DC converters as DG power sources

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3 Author(s)
Saeed Jahdi ; Power and Energy Systems laboratory, City University London, UK ; Loi Lei Lai ; Daniel Nankoo

Renewable Energy Resources are best practices possible today to stand against increasingly risk of climate changes and global warming of the world and the most important sources of such types of resources of energies can be Wind and Solar energies which are most the efficient relatively. These clean power resources are used as in Distributed Generation (DGs) units technology to be defined as newer sources of power, which are in direct relation with the use of micro and smaller in capacity power generating units that are installed in distribution part of each power combined system or all the possible locations that loads and energy consumers are concentrated. Hybrid systems are of different states. One of the practices possible to provide these hybrids is combination of grid connected wind turbines and solar photovoltaic generators that together each could sit instead of the other one in a grid connection state when one of them cannot generate the required electricity for consumption by load properly. Moreover, Solar cells can generate the electricity required in the day while wind turbines can compensate the needs in the night by wind energy. This is exclusively where solar cells have gained more important effects in electricity generation of the world. They are consisting of a sort of assembly of different cells together to form a flat photovoltaic system to absorb the photons and generate electricity by electrons energized in the circuit. On the other hand, Systems for conversion of energy of wind, use Permanent Magnet Synchronous Generators that are usually installed to generate electricity. Recently, wind turbines are even improved to VSD drives from constant speed generators which provides the machine the ability of generation based on cases that rotational speed varies with changes in speed of wind and that means better contributions for flexibility. These simplified hybrid systems are provided and Simulations are done to confirm expectation outcomes of this - onnection.

Published in:

Sustainable Technologies (WCST), 2011 World Congress on

Date of Conference:

7-10 Nov. 2011