온도 측정을 기반으로 한 태양광발전의 MPPT 제어

The characteristics of I-V and P-V of solar cell nonlinearly changes according to irradiation, temperature and load. Therefore, to use efficiently PV system, operating point must be always operating at maximum power point. Also, PV system is semiconductor, so it generates loss by temperature. But because of conventional MPPT methods are not considering temperature, it has problem which decrease efficiency. This paper proposes novel MPPT algorithm using temperature coefficient based optimal voltage. It analyzes characteristics of solar cell according to irradiation and temperature and conventional MPPT methods. The novel MPPT algorithm proposed in this paper is compared and analyzed conventional MPPT methods. The validity of this paper proves using this result.