태양광 발전용 양방향 인버터를 이용한 독립계통의 설계 및 구축

This paper presents the way of off-grid system design and establishment using bi-directional inverter which has the features of both charger and inverter. The bi-directional inverter acts as a grid forming voltage source for off-grid system and also, can act as a current source to feed power to the off-grid when parallel operation is necessary with generator. These features of bi -directional inverter make it possible each components of the off-grid are coupled to AC and contributes more flexibility to the off-grid system design.