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This paper introduces a novel system based on integration of solar power generator with grid for optimal utilization of energy by minimizing the power drawn from grid. A prototype grid integrated PV system comprising of PV module (2*75 Wp), battery bank (12 V, 2*80 Ah) as an energy storage device and an intelligent, adaptive inverter (300 W) has been developed and successfully implemented at site...
This paper proposes a current controller design based on H∞ and repetitive control techniques for grid-connected inverters to reduce current total harmonic distortion (THD). The repetitive control, based on the internal model principle, offers an alternative for voltage tracking, as it can deal with a very large number of harmonics simultaneously. This leads to low harmonics distortion and improved...
Anti-islanding is an indispensable protecting function in grid-connected photovoltaic (PV) systems. As one of islanding detection methods, active frequency drift with positive feedback (AFDPF) methods are widely used currently. Such methods, however, increase the grid current harmonics to a large extent. This paper proposes a modified AFDPF method which can effectively detect the islanding in due...
This paper presents a prototype voltage source power condition system (PCS) for superconducting magnetic energy storage (SMES). The topology of voltage source PCS is a voltage source converter (VSC) in series with a two-quadrant DC chopper. Based on VSC mathematical model created, the VSC active and reactive current decoupled feedback control is proposed. Under the cooperating control of VSC and DC...
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