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Multifunctional grid-tied inverters (MFGTIs) have been paid much attention to handle the commonly concerned power quality issues of the microgrids. An MFGTI can not only interface the renewable energy resource into the utility grid, but also can compensate the harmonic and reactive current in the microgrid as an auxiliary service. However, the apparent capacity of an MFGTI for power quality compensation...
Virtual synchronous generator (VSG) in single-phase to interface distributed renewable energy is investigated in this paper. Mathematical models and numerical analysis are utilized to illustrate the features of the VSG. Enhanced control strategy is presented to ensure the performance of the VSG. Besides, a second order generalized integer (SOGI) is employed to calculate the instantaneous output power...
In this paper, virtual synchronous generator (VSG) theory is investigated and utilized to control parallel inverters in a micro-grid, which is capable of sharing the local loads without communication lines. The mathematical model of VSG is built to describe the electromagnetic and mechanical characteristics of a synchronous generator. To make the model suitable for parallel inverters application,...
Different CV curves of junction diode were observed in the MOSFET with 36nm MOS for the fist time. Traditional characterization results of source/body and drain /body junction diode from longer channel MOSFET and large diode are not the same as those in the shorter channel and small diode. In this paper we discussed the discrepancies of traditional diode characterization and proposed a new way for...
A novel multi-functional grid-connected inverter (MFGCI) is presented in this paper, which can enhance power quality at the point of common coupling (PCC), compensating the unbalanced, harmonic and reactive current simultaneously. To achieve comprehensive compensation, comprehensive indicators of power quality are proposed and a multi-objective optimal mathematical model is built with some constraints...
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