Active harmonic filter with time domain analysis

Details Active harmonic filter with time domain analysis Active harmonic filter with time domain analysis

1995-09-29

1996-10-22

Shoop, Jr., William M.

Electrical transmission or interconnection systems

With harmonic filter or neutralizer

363 39, 363 40, 363 41, 331 76, H02M 112

Patent

active

055679943

ABSTRACT:
A hybrid active filter shunts three-phase power with passive elements tuned to have low impedance at a frequency of harmonic distortion. The passive elements are in series with controlled voltages sources providing cancelling currents to the harmonic currents. Rapid determination of the harmonic currents is provided in real-time through the use of a Park transformation reducing the variables which need to be manipulated. Measured currents as transformed are used to model undistorted current based on an average power consumed by the load. When the undistorted current is subtracted from the actual current, a harmonic current signal is produced that may be used to drive the voltage sources. The time domain method requires rapidly computed running averages and thus may be performed in-between the acquisition of the measured current samples.

REFERENCES:
patent: 3883792 (1975-05-01), Ellert
patent: 4862342 (1989-08-01), Dhyanchand et al.
patent: 5001619 (1991-03-01), Nakajima
patent: 5063532 (1991-11-01), Takeda
patent: 5224028 (1993-06-01), Lipman
patent: 5327335 (1994-07-01), Maddali et al.
patent: 5377092 (1994-12-01), Rowand
patent: 5397927 (1995-03-01), Suelzle
patent: 5508623 (1996-04-01), Heydt
patent: 5513090 (1996-04-01), Bhattacharya

Affiliated with

Also associated with

Rating

Active harmonic filter with time domain analysis 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 harmonic filter with time domain analysis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Active harmonic filter with time domain analysis will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2360819