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This paper introduces a design methodology of the zero-voltage switching (ZVS) inverter. Winding structure of the resonant inductor is investigated with finite element analysis (FEA) tool. Busbar structure of the ZVS inverter is discussed to obtain lower stray inductance of the crucial loop. A 30-kW prototype was built following proposed design methodology. The experimental results show that the highest...
The control of a PWM inverter is affected by variable inductance present in the power line of the grid. This paper presents a new implementation of grid-tied inverter with weighted-average-current feedback control (WAC) and an embedded online technique to determine the grid line impedance. By adding an inter-harmonic voltage periodically in the modulation of the PWM and measuring the current response,...
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