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Proceedings of the Second International Energy 2030 Conference,
November 4-5, 2008, Abu Dhabi, U.A.E.

An Improved Power Converter for ADNOC Solar Power Supply

Abdul Rahiman Beig

The Petroleum Institute, UAE

Majid Postan

The Petroleum Institute, UAE

Abstract
Solar energy is a non-conventional source of energy; it is environment friendly and available abundantly. Power converter circuits are required to convert the solar energy from available form (dc) to the required form (normally ac). At present the cost of solar power is too high, hence the power converters should be highly efficient, reliable and cost effective. In this paper, a novel power converter circuit which has improved efficiency, reliability and low cost over conventional circuits is proposed. The proposed circuit is based on cascaded H-bridge inverter topology in which higher voltages can be synthesized using devices of lower voltage rating. A 15-level cascaded H-Bridge inverter configuration is used. This results in sinusoidal output voltages with very low THD with the devices switching at fundamental frequency. The low switching frequency results in reduced switching losses, simple power and gate circuit. MOSFETs with low on state resistance help in keeping the conduction loss at low levels.




 

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