NDLI: Fixed frequency current controller applied to shunt active filters with UPF control in four-wire power systems

Content Provider	IEEE Xplore Digital Library
Author	Abellan, A. Benavent, J.M. Garcera, G. Cerver, D.
Copyright Year	2002
Description	Author affiliation: Univ. Politecnica de Valencia, Spain (Abellan, A.; Benavent, J.M.; Garcera, G.; Cerver, D.)
Abstract	This paper presents a shunt active power filter for four-wire power systems with unity power factor control (UPF), which operates in unbalanced and nonsinusoidal conditions. In these power systems it is interesting to use four-branch voltage source inverters (VSI) because they are capable of compensating load currents of nonzero average value. Most four-branch VSI control methods are based on a space vector generalization using Clarke's transformation. The switches of these inverters operate at variable frequency with the well-known disadvantages that this supposes. Here a fixed frequency current controller applied to four-branch VSI is presented. It is based on an extension of the space vector modulation from two-dimensional space to three-dimensional space using Clarke's transformation. With it, a fixed switch switching frequency is obtained that causes line current ripples to have a fixed frequency. These current ripples can be easily attenuated by means of appropriate filters. This current controller also is able to decrease the relationship between DC and AC voltages at a greater rate than the one in and at a much greater rate than the ones in. For obtaining the reference currents starting from load currents the UPF control method based on the domain analysis is used.
Sponsorship	IEEE ice SICE Univ. Sevilla
Starting Page	780
Ending Page	785
File Size	492480
Page Count	6
File Format	PDF
ISBN	0780374746
DOI	10.1109/IECON.2002.1187607
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-11-05
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Control systems Power system control Frequency Active filters Power systems Power system harmonics Power harmonic filters Reactive power Switches Voltage
Content Type	Text
Resource Type	Article

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