Three-phase three-wire active power filter

Details Three-phase three-wire active power filter Three-phase three-wire active power filter

2006-08-15

2006-08-15

Riley, Shawn (Department: 2838)

Electricity: power supply or regulation systems

For reactive power control

Using converter

C363S040000, C307S105000

Reexamination Certificate

active

07091704

ABSTRACT:
A three-phase three-wire active power filter includes a dc power capacitor, a power converter, a filter inductor set, a reactive power compensating capacitor set, a combined capacitor/resistor filtering set and a control circuit. The dc power capacitor provides with a regulated voltage. The power converter includes a two-arm bridge power converter, and has a pair of ac terminals and a pair of dc terminals. A phase of the three-phase three-wire active power filter, without control of the power electronic switch set, directly connects with any one of the dc terminals. Consequently, the number of power electronic switches employed in the two-arm bridge power converter of the three-phase three-wire active power filter can be reduced.

REFERENCES:
patent: 5321598 (1994-06-01), Moran
patent: 5465203 (1995-11-01), Bhattacharya et al.
patent: 5567994 (1996-10-01), Davis et al.
patent: 5731965 (1998-03-01), Cheng et al.
patent: 5977660 (1999-11-01), Mandalakas et al.
patent: 6472775 (2002-10-01), Huang et al.
patent: 6717465 (2004-04-01), Chou et al.

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