Synchronization of active power filter current reference to thenetwork
Nedeljkovic, D.
Nastran, J.
Voncina, D.
Ambrozic, V.
Fac. of Electr. Eng., Ljubljana Univ.;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: Apr 1999
Volume: 46,
Issue: 2
On page(s): 333-339
ISSN: 0278-0046
References Cited: 14
CODEN: ITIED6
INSPEC Accession Number: 6221685
Digital Object Identifier: 10.1109/41.753772
Current Version Published: 2002-08-06
Abstract
This paper presents an improved method of current reference
determination for a parallel active power filter. To insure sinusoidal
line currents, thus reducing reactive power, an integrative method of
reference calculation is applied. As a result, satisfactory response of
line current to the load change is achieved. One of the major problems,
the synchronization to the net voltage, is also considered. Classical
solution is based on zero-cross detection of line voltage. Since this
approach is very sensitive to the voltage distortions, a new method is
suggested, relying on voltage fundamental harmonic calculation. These
ideas were tested on a three-phase active power filter, controlled by
32-bit microcontroller
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