태양전지 모듈의 온도변화에 의한 출력특성

Abstract

The recent advancement of industrial life and industrialization is causing such problems as the depletion of fossil fuels, temperature rising by the destroyed ozone layer, and environmental pollutions. As a result, the importance of new and renewable energies is being spotlighted. In particular, interest in clean energy using sunlight is increasing and photovoltaic systems are becoming popular because they have an infinite energy source and has concern for environmental pollution compared to thermal power and atomic power systems which use fossil fuels. With the activation of the domestic market for photovoltaic systems, many studies are being conducted in various areas to improve their maximum power generation performance. The power demand is sharply increasing with the accelerating industrialization across the world. Especially in South Korea, an energy crisis is expected in the future due to excessive consumption of energy. Photovoltaic power generation is to convert solar energy to electric energy through solar cells. Unlike the thermal and atomic power generation using fossil fuels, it is environment-friendly with no environmental pollutions or noises, and it has no concern for depletion because the energy source is infinite. Furthermore, it can be used to convert solar energy to electrical energy in any place where there is sunlight, and it is an advanced technology that generates no carbon dioxide emissions. Due to the long life-span, photovoltaic systems are easy to install and manage, reducing maintenance costs. Solar cells are semiconductor devices that convert the solar energy to electrical energy, and they are also referred to as solar batteries, solar cell modules, solar cell array, etc. Recently, the term photovoltaic cell is used more often. The core element of a photovoltaic system is solar cell. Solar cell uses a semiconductor device technology that absorbs sunlight into a solar cell and converts it into electrical energy. It has the same basic structure and material characteristics in general as those of laser, thermocouple, and LED devices which convert electrical energy to light energy; only the direction is reversed. In this study, the power generation amount was measured with a solar cell module having a Pmax value of 65[W]. Furthermore, how the electrical characteristics of the solar cell module such as output current, output voltage, and output characteristic curve were influenced by various factors module temperature variation, ambient temperature, solar radiation, etc. was examined.