Single-ended Resonant Inverter for Photovoltaic Applications

The Single-Ended (SE) resonant microinverter is a type of class E parallel resonant inverter and popularly used in many applications due to its lower cost structure and relatively high efficiency. However, its maximum power rating should be limited because the resonant voltage of SE resonant inverter increases as its power increases. Consequently, the maximum power rating of SE resonant inverter should be limited up to around 2 kW. This paper proposes an interleaved single-ended resonant inverter for the photovoltaic applications. The proposed inverter can provide two times higher output power than the conventional single-ended resonant inverter. A burst mode control enhances the power control range from very light load to full load and can improve efficiency.