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"A New Common Grounded Nine-Level Grid-Tied Inverter with Voltage Boost" by Naser Vosoughi Kurdkandi, Milad Ghavipanjeh Marangalu et al.

Common grounded voltage source inverters are become very attractive in the photovoltaic (PV) grid-connected applications. In this paper a novel single input common grounded nine-level grid-connected inverter is presented. The proposed grid-tied inverter consists of eight switches, two diodes and three self-balanced capacitors. The proposed inverter can provide the voltage boosting feature with the voltage gain factor of 4 using the switched-capacitor strategy. In the suggested topology the neutral of the power grid is tied to the negative polarity of the input power dc supply, directly. Therefore, common mode voltage is reduced and leakage current concern is solved. In order to handle both powers (active and reactive), the current control technique is applied. Therefore, the proposed inverter can inject a high quality sinusoidal current to the power grid. Finally, the experimental results of 770 W prototype validate the good performance of the recommended inverter. ....

Common Grounded Inverter , Grid Tied Inverter , Eakage Current Elimination , Witched Capacitor Based Inverter , Oltage Boosting Feature ,

"A New Common Grounded Quasi Z-Source DC-DC converter with Voltage Boos" by Ataollah Samadian, Milad Ghavipanjeh Marangalu et al.

This study presents a high step-up Quasi Z-source converter based on T-Type inverter. The proposed converter employs voltage multiplier cell and coupled inductors techniques with one magnetic core to create high voltage levels for inverter. The essential advantage of this converter is that the ground of input voltage source and grid is the same which eliminates the leakage current in Photovoltaic application. Also, the input current of this converter is continuous and the voltage stresses on main power switch and most of diodes are low. The mathematical analysis, operating principle, design consideration and comparison study for proposed converter are investigated and 730W PSCADE EMDCT software simulation results validate the accuracy of proposed converter. ....

Quasiz Source , Grid Tied Inverter , Eakage Current Elimination , Uasiz Source Network , T Type Inverter ,