모듈의 표면온도 보정에 따른 태양전지 출력특성 개선

Abstract

PV(Photovoltaic) power generation, which directly converters solar radiation into electricity, contains numerous significant advantages. It is inexhaustible and pollution-free, silent, contains no rotating parts. As the cost of PV generation systems continues to decrease, utility interactive systems are becoming more economically viable. Furthermore, increases in consumer awareness correspond to a willingness to pay a premium price for clean electrical energy generated using renewable energy resources. Renewable energy technologies, consequently, are playing an increasingly important role in supplying the world's electricity demands. PV generation system in particular are undergoing a rapid expansion showing an industrial growth of approximately 40% per year worldwide. As PV cell and system technology improve, new markets become increasingly accessible. However, the output power of PV generating system is not systematically tracked and influenced by various factors; solar irradiance, solar cell temperature and the connected load condition. The temperature of solar module should be minimised to increase electrical output. It is estimated that an average solar module operates at a temperature of up to 50°C above ambient temperature. This is estimated to be 10°C higher than that which could be achieved by better-informed design. This represents a performance loss of up to 5% on power produced, as well as increasing thermal cycling stresses and ageing processes. In this paper, authors suggest that solar module of new type for improved output efficiency can be obtained by reduced surface temperature of solar module. It is concluded that the proposed module produces better results than conventional module. The validity of proposed solar module is verified through computer-aided simulation and experimental results.