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Microgrids are small reliable grids formed by clustering distributed sources and loads together. They can, in principle, operate at different voltages and frequencies like 50 Hz, 60 Hz, 400 Hz or even dc. Tying them either to the mains grid or among themselves would certainly require some interlinking power converters, whose active and reactive power flow control should preferably be done autonomously...
Microgrids comprise of emerging generation technologies such as fuel cell, solar PV, wind turbine generator, storage and loads. They can, in principle, operate at different voltages and frequencies. Tying them either to the mains grid or among themselves would certainly require some interlinking power converters, whose control should preferably be done autonomously without demanding communication...
In this paper, a mixed-frame and a stationary-frame time delay current controller are proposed for high precision reference tracking and disturbance rejection of power converters. In particular, the controllers use a proportional-resonant regulator in the stationary frame for regulating the positive and negative-sequence fundamental currents, which are known to directly influence the flow of active...
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