Electric power conversion systems – Current conversion – With means to introduce or eliminate frequency components
Patent
1992-10-30
1994-09-27
Voeltz, Emanuel T.
Electric power conversion systems
Current conversion
With means to introduce or eliminate frequency components
363 71, 363 98, 323207, H02M 112, H02M 540, G05F 170
Patent
active
053511786
ABSTRACT:
An improved active power line conditioner with fast dynamic response is disclosed. The active power line conditioner includes a series inverter coupled to an energy input source, and a parallel inverter coupled to a non-linear load. The non-linear load is powered by a three phase load current which includes fundamental components and harmonic components.
An energy storage element is electrically connected between the series inverter and the parallel inverter. The load current fundamental signal is derived and is multiplied by a derived voltage output/input ratio to render a current reference product. The current reference product may be further modified by a user-set displacement power factor correction ratio. The current reference product is applied to the series inverter for fast dynamic response within the active power line conditioner.
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Brennen Michael B.
Moran Steven A.
Electric Power Research Institute Inc.
Voeltz Emanuel T.
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