NDLI: High-performance unified power quality conditioner using command generator tracker-based direct adaptive control strategy

Content Provider	IET Digital Library
Author	Patjoshi, Rajesh Kumar Mahapatra, Kamalakanta
Abstract	This study proposes a command generator tracker-based direct adaptive control technique (CGT-DAC) in a three-phase three-wire unified power quality conditioner (UPQC). This proposed CGT-DAC improves the PQ issues such as current and voltage harmonics, sag/swell and voltage unbalance in the power system distribution network. CGT is a model reference control law for a linear time-invariant system with known coefficients and is formulated for the generation of reference signals for both shunt and series inverter. Furthermore, CGT can adaptively regulate the DC-link capacitor voltage without utilising additional controller. Moreover, DAC is designed to track a linear reference model to reduce the tracking error between model reference output and measured signal to be controlled. Therefore, the proposed CGT-DAC approach provides more robustness, flexibility and adaptability in all operating conditions of the power system over a conventional proportional–integral (PI) controller. This proposed control strategy of UPQC is validated through MATLAB/SIMULINK followed by the experimental system of real-time-hardware-in the loop-based OPAL-RT system and adequate results are reported after a comparative assessment with the conventional PI-controller.
Starting Page	1267
Ending Page	1278
Page Count	12
ISSN	17554535
Volume Number	9
e-ISSN	17554543
Issue Number	Issue 6, May (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/9/6
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2015.0439
Journal	IET Power Electronics
Publisher Date	2016-05-18
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	CGT-DAC Command Generator Tracker-based Direct Adaptive Control Strategy Control of Electric Power System Current Harmonics DC-link Capacitor Voltage Regulation Distribution Network Harmonics High-performance A Three-phase Three-wire Unified Power Quality Conditioner Invertors Linear Reference Model Linear System Linear Time-invariant System MATLAB Model Reference Adaptive Control System Model Reference Control Law Other Power Apparatus And Electric Machine PI Control Power Capacitor Power Distribution Control Power Supply Quality Power System Distribution Network Power System Harmonics Proportional-integral Controller Real-time-hardware-in The Loop-based OPAL-RT System Reference Signal Generation Sag Self Adjusting Control System Series Inverter Shunt Inverter SIMULINK Swell Tracking Error Reduction UPQC Voltage Control Voltage Harmonics Voltage Unbalance
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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