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Creating & Shares Epoch N Riding waves and chasing lights of solar power, Yingli Solar shines at SNEC

On May 26, the three-day annual International Photovoltaic Power Generation and Smart Energy Conference & Exhibition (SNEC) officially concluded. ....

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"A New Six-Level Transformer-Less Grid-Connected Solar Photovoltaic Inv" by Naser Vosoughi Kurdkandi, Milad Ghavipanjeh Marangalu et al.

This paper presents a novel structure of the transformer-less grid-connected inverters. The proposed inverter is combined with six power switches and two power diodes which can generate six voltage levels at the output. Furthermore, the proposed inverter can overcome the leakage current issue in the photovoltaic (PV) system, which is the major problem in grid-tied PV applications. Additional significant features include- reduced filter size, lower total harmonic distortion (THD) of the injected current to the grid, and voltage boosting ability. Moreover, the proposed topology provides full reactive power support to the grid. A control strategy is designed and implemented to provide a voltage boost ability without using any additional dc-dc boost converter. Finally, the performance of the proposed inverter is validated by the 770 W laboratory prototype. ....

Leakage Current Limitation , Photovoltaic Application , Ransformer Less Inverter , Oltage Boosting Ability ,