Читать книгу Integration of Renewable Energy Sources with Smart Grid - Группа авторов - Страница 47

PV directly converts solar energy into electricity. When certain semiconductor materials are exposed to light, they absorb photons and release free electrons. This phenomenon is called the photoelectric effect. Direct current (DC) is produced by the PV effect based on the principle of photoelectric effect [12].

Solar cells or PV cells convert sunlight into DC electricity. But a large amount of electricity cannot be produced by single PV cell. Therefore, several PV cells are electrically connected to form a PV module or solar panel. Solar panels range from several hundred watts up to a few kilowatts and are also available in different sizes. Solar panels or modules produce current which is directly dependent on the incident light. Since most of the applications require AC power, the solar power system consists of an inverter too [13].