The way we control the speed of fan motors or pump motors has tremendously changed in the past two decades with the introduction of variable-frequency drives (VFDs), aka variable-frequency controllers ...
The distribution system, a key subset of the overall electric grid, provides power to residential, commercial and industrial customers. Voltage and reactive power management and control have been done ...
ACCORDING TO THE American Wind Energy Association, by the end of 2001, an additional 2000 MW of wind power will be added in the U.S. This new capacity includes four new wind farms of 200 MW or more ...
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