Adaptive controller for d-statcom in the stationary...

Details Adaptive controller for d-statcom in the stationary... Adaptive controller for d-statcom in the stationary...

2005-03-01

2005-03-01

Patel, Rajnikant B. (Department: 2838)

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

C323S207000, C307S105000

Reexamination Certificate

active

06862199

ABSTRACT:
A controller (130) for compensating reactive power and selected current load harmonics in an unbalanced multi-phase power distribution system. Control current is injected from a multi-phase voltage source inverter (118) into the multi-phase power distribution system as a function of the voltage and current provided by the source inverter118. The injected current is operative to balance the load seen by the power distribution system including non-linear/distorted and unbalanced loads in each phase. The controller includes an inner loop control processor (216), an outer loop control processor, and an adaptation processor. The adaptation processor (238) is operative to estimate a selected set of predetermined harmonic components in the periodic disturbance which is a function of the unknown system parameters, the source current, the source voltage, and their time derivatives in stationary coordinates.

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patent: 5642007 (1997-06-01), Gyugyi et al.
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