NDLI: Three-level hysteresis current control strategy for three-phase four-switch shunt active filters

Content Provider	IET Digital Library
Author	Biricik, Samet Komurcugil, Hasan
Abstract	In this study, a three-level hysteresis current-control (HCC) strategy is proposed for three-phase four-switch shunt active power filters. The four-switch topology which utilises four switching devices together with two series connected capacitors is able to reduce the cost, switching losses and improve the reliability of system. In this topology, when the current control of phases A and B is achieved successfully, the current control of phase C which is connected to the midpoint of the series connected capacitors is achieved automatically. The current control is achieved by using a three-level HCC strategy. An important consequence of using this control strategy is that it enables access to the zero level of the input voltage of active filter so that a switching device is only switched when the current error is negative, while it remains off when the current error is positive. Furthermore, the imbalance in the capacitor voltages is eliminated by adding a feedback term (the difference in the capacitor voltages multiplied by a suitable gain) to the current control. The proposed control strategy offers a reduced switching frequency, losses and cost. The steady-state and dynamic performance of the proposed control strategy is verified through simulations and experimental studies.
Starting Page	1732
Ending Page	1740
Page Count	9
ISSN	17554535
Volume Number	9
e-ISSN	17554543
Issue Number	Issue 8, Jun (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/9/8
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2015.0764
Journal	IET Power Electronics
Publisher Date	2016-06-29
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Active Filter Capacitor Voltage Control of Electric Power System Cost Reduction Current Control Dynamic Performance Electric Current Control Four-switch Topology Harmonic Distortion Harmonics IEEE-519 Standard Other Power Apparatus And Electric Machine Power Harmonic Filter Power Supply Quality Reduced Switching Frequency Reliability RT-LAB Real-time Platform Series-connected Capacitor Source Current Steady-state Performance Switching Loss System Reliability Improvement Three-level HCC Strategy Three-level Hysteresis Current Control Strategy Three-phase Four-switch Shunt Active Power Filter Total Harmonic Distortion
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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