A Single-Loop Repetitive Voltage Controller with an Active Damping Control Technique

This paper proposes a single-loop repetitive voltage control strategy which incorporates the active damping control feature for single-phase uninterruptible power supply (UPS) applications. The proposed method reduces the effect of the LC resonant peak, which limits the control bandwidth and deterio...

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Main Authors: Younghoon Cho, Byeng-Joo Byen, Han-Sol Lee, Kwan-Yuhl Cho
Format: Article
Language:English
Published: MDPI AG 2017-05-01
Series:Energies
Subjects:
Online Access:http://www.mdpi.com/1996-1073/10/5/673
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author Younghoon Cho
Byeng-Joo Byen
Han-Sol Lee
Kwan-Yuhl Cho
author_facet Younghoon Cho
Byeng-Joo Byen
Han-Sol Lee
Kwan-Yuhl Cho
author_sort Younghoon Cho
collection DOAJ
description This paper proposes a single-loop repetitive voltage control strategy which incorporates the active damping control feature for single-phase uninterruptible power supply (UPS) applications. The proposed method reduces the effect of the LC resonant peak, which limits the control bandwidth and deteriorates the stability of the entire control loop by effectively increasing the damping component. Due to the increased stability margin, a repetitive controller working together with a proportional-resonant (PR) controller can be easily adopted. Moreover, the voltage error is minimized even under severe non-linear load conditions. It is confirmed that the proposed single-loop controller achieves excellent and stable voltage regulation performance by evaluating the entire loop-gain of the system and the output impedance. Both the simulation and the experimental results for a 1.5 kW UPS inverter show agree well with the analyses, and the excellence of the proposed method has been verified.
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spelling doaj.art-fefee04274524b4091dc731cb0672a9a2022-12-22T04:03:53ZengMDPI AGEnergies1996-10732017-05-0110567310.3390/en10050673en10050673A Single-Loop Repetitive Voltage Controller with an Active Damping Control TechniqueYounghoon Cho0Byeng-Joo Byen1Han-Sol Lee2Kwan-Yuhl Cho3Department of Electrical Engineering, Konkuk University, Seoul 05029, KoreaDepartment of Electrical Engineering, Konkuk University, Seoul 05029, KoreaDepartment of Control and Instrumentation Engineering, Korea University of Transportation, Chungju 27469, KoreaDepartment of Control and Instrumentation Engineering, Korea University of Transportation, Chungju 27469, KoreaThis paper proposes a single-loop repetitive voltage control strategy which incorporates the active damping control feature for single-phase uninterruptible power supply (UPS) applications. The proposed method reduces the effect of the LC resonant peak, which limits the control bandwidth and deteriorates the stability of the entire control loop by effectively increasing the damping component. Due to the increased stability margin, a repetitive controller working together with a proportional-resonant (PR) controller can be easily adopted. Moreover, the voltage error is minimized even under severe non-linear load conditions. It is confirmed that the proposed single-loop controller achieves excellent and stable voltage regulation performance by evaluating the entire loop-gain of the system and the output impedance. Both the simulation and the experimental results for a 1.5 kW UPS inverter show agree well with the analyses, and the excellence of the proposed method has been verified.http://www.mdpi.com/1996-1073/10/5/673uninterruptible power supply (UPS)repetitive voltage controlactive damping
spellingShingle Younghoon Cho
Byeng-Joo Byen
Han-Sol Lee
Kwan-Yuhl Cho
A Single-Loop Repetitive Voltage Controller with an Active Damping Control Technique
Energies
uninterruptible power supply (UPS)
repetitive voltage control
active damping
title A Single-Loop Repetitive Voltage Controller with an Active Damping Control Technique
title_full A Single-Loop Repetitive Voltage Controller with an Active Damping Control Technique
title_fullStr A Single-Loop Repetitive Voltage Controller with an Active Damping Control Technique
title_full_unstemmed A Single-Loop Repetitive Voltage Controller with an Active Damping Control Technique
title_short A Single-Loop Repetitive Voltage Controller with an Active Damping Control Technique
title_sort single loop repetitive voltage controller with an active damping control technique
topic uninterruptible power supply (UPS)
repetitive voltage control
active damping
url http://www.mdpi.com/1996-1073/10/5/673
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