Active filtering of AC/DC switched converter input current

Details Active filtering of AC/DC switched converter input current Active filtering of AC/DC switched converter input current

1999-11-08

2000-10-10

Riley, Shawn

Electric power conversion systems

Current conversion

Using semiconductor-type converter

363 44, H02M 7217

Patent

active

061308323

ABSTRACT:
An active inductor for controlling transistor bridge switching carrier frequency current components in the power mains connected to a three-phase AC/DC switched bridge converter includes a transformer for each phase, each having a secondary between the AC main and the switched bridge, the primary of which is driven by a bridge switched at much higher frequency in response to a synthesized waveform which ideally will completely cancel the main power bridge switching current components. Reduction of the current carrying requirement of the active inductor is achieved by providing negative feedback of the fundamental power frequency from the primary of each transformer; deviations in the synthesized waveform from the ideal waveform, due to delays and distortions in real circuits and/or processing, are reduced by providing negative feedback from the resultant current (the secondary of the active filter transformer).

REFERENCES:
patent: 5567994 (1996-10-01), Davis et al.
patent: 5751138 (1998-05-01), Venkata et al.
patent: 6038152 (2000-03-01), Baker
H. Fujita & H. Akagi, "An Approach to Harmonic Current-Free AC/DC Power Conversion for Large Industrial Loads: The Integration of a Series Active Filter with a Double-Series Diode Rectifier", IEEE Trans. Ind. Applicat., vol. 33, pp. 1233-1240, Sep./Oct. 1997.

Affiliated with

Also associated with

Rating

Active filtering of AC/DC switched converter input current does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Active filtering of AC/DC switched converter input current, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Active filtering of AC/DC switched converter input current will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2261633