A new transformer‐less common grounded five‐level grid‐tied inverter with leakage current elimination and voltage boosting capability for photovoltaic applications

Due to serious Concerns such as air pollution, global warming, and fossil fuels shortcoming, renewable energy sources photovoltaic applications are dramatically being integrated into the power generation systems all of world. Here, a new switched-capacitor-based transformer-less grid-tied inverter has been proposed. By applying series–parallel switching technique utilized switched-capacitor module, voltage boosting capability obtained. implementing common ground technique, high overall efficiency leakage current elimination have Since proposed provides multi-level output voltage, total harmonic distortion injected grid is reduced. The introduced control strategy implemented both active reactive powers generate switches pulses. Therefore, quality adjusted grid. This requires single source input DC source. comprehensive description its performance with design considerations presented. structure compared several similar structures obtained results investigated. To evaluate inverter, 620 W laboratory prototype assembled experimental analyzed.