계통연계형 Transformerless PV PCS 제어 고찰

The Power Conditioning System is Power Transfer System which make array DC current to the Grid sinusoidal current. These are Low Frequency Transformer Inverter Type, High Frequency Transformer Inverter Type and Transformerless Type. Low Frequency Transformer Type has a Excellent Isolation property, but doesn't have competitiveness in Size and Cost. Also High Frequency Transformer Type has a good Isolation property but there are many steps in Power transfer Switching. Now a days, Transformerless Type PCS change a transformer to DC/DC Converter which is small and cost effective. This paper deal with the DC/DC Converter MPPT Transformerless Type PCS. The Control Algorithm will be introduced and Simulation and Experiment was accomplished.