Active power filter method and apparatus

Details Active power filter method and apparatus Active power filter method and apparatus

2011-05-24

2011-05-24

Le, Dinh T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

Unwanted signal suppression

C327S558000, C363S131000, C323S207000

Reexamination Certificate

active

07948306

ABSTRACT:
This disclosure provides active power filter methods and apparatus to control the PF, harmonics and/or ripple current associated with powering electrical devices. According to one exemplary aspect, an active power filter is configured to measure the momentary ac line output current, measure the momentary ac line input current and switch an energy buffer to provide additional current to the ac line output or draw current from the ac line input to control the PF associated with the device.

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