Active filter control

Details Active filter control Active filter control

1994-09-30

1997-07-15

Krishnan, Aditya

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

H02M 112

Patent

active

056488947

ABSTRACT:
A set of command signals is generated for application to the respective lines of a four-wire three phase power distribution system to compensate for harmonic distortion and neutral unbalance. A transform operation is performed upon a first set of signals, which collectively represent the uncompensated load current in each of the main transmission lines of the power distribution system, to generate a second set of signals which collectively represent the active and reactive components of the current in the system. Signal components at the fundamental frequency of the three phase system are removed from the active and reactive components to provide only harmonic active and reactive components. A reverse transform operation is performed upon the harmonic components to provide a set of command signals.

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