Active power conditioner for AC load characteristics

Details Active power conditioner for AC load characteristics Active power conditioner for AC load characteristics

2006-08-11

2008-11-04

Han, Jessica (Department: 2838)

Electricity: power supply or regulation systems

For reactive power control

Using converter

C323S266000

Reexamination Certificate

active

07446511

ABSTRACT:
An active power conditioner, connecting with a load and a power source in parallel, includes a DC power capacitor, a power converter, a high-frequency filter and a control circuit. The control circuit detects the voltage of the DC power capacitor and the current of the power source, thereby performing a closed loop control to stabilize the voltage of the DC power capacitor and performing a feed forward control to generate a driving signal for driving the power converter. The power converter actuates the DC power capacitor to supply a current via the high-frequency filter to reduce the reactive and harmonic components of load current. The load is converted to the linear resistance characteristic, observed from the power source side.

REFERENCES:
patent: 5321598 (1994-06-01), Moran
patent: 5329221 (1994-07-01), Schauder
patent: 5614770 (1997-03-01), Suelzle
patent: 5977660 (1999-11-01), Mandalakas et al.
patent: 6381157 (2002-04-01), Jensen
patent: 7183751 (2007-02-01), Wu et al.
patent: 7301787 (2007-11-01), Wu et al.

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