Maximum Power Point Tracking Control of Photovoltaic System by using Current Solar Cell

태양전지 전류에 의한 계통연계형 태양광발전시스템의 최대출력 제어법

A step down chopper and PWM current source inverter is used for the connection between the PV array and the utility. This paper proposes chopper is controlled for the dc reactor decrease and PWM current source inverter is controlled to keep the output power at the maximum point for the PV. The PV current only is measured and employed for the power calculation combining the control parameter of the PWM current source inverter.