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Journal article 566 views

Time delay compensation-based fast current controller for active power filters

Z Zhou, Y Liu, Zhongfu Zhou Orcid Logo

IET Power Electronics, Volume: 5, Issue: 7, Pages: 1164 - 1174

Swansea University Author: Zhongfu Zhou Orcid Logo

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Abstract

Despite potential application of modern control techniques, conventional proportional-integral (PI) control technique is still a prefer choice for active power filters because of its good dynamic properties. However, the performance of the PI current controller is influenced by sampling and computat...

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Published in: IET Power Electronics
ISSN: 1755-4535 1755-4543
Published: 2012
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa12569
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Abstract: Despite potential application of modern control techniques, conventional proportional-integral (PI) control technique is still a prefer choice for active power filters because of its good dynamic properties. However, the performance of the PI current controller is influenced by sampling and computation time delays under high di/dt operating conditions. In this study a conventional PI current controller is designed based on deadbeat control algorithm. The control system time delay is compensated by making use of a modified Smith predictor. The compensation of the reference current phase delay is also discussed in the study. Simulations have been carried out to demonstrate the performance of the designed active power filter with different control strategies. Experimental results show that the active power filter of the proposed current control scheme has achieved expected performance.
Keywords: reference current phase delay compensation, time delay compensation, fast current controller, active power filters, proportional-integral control technique, PI current controller technique, deadbeat control algorithm, control system time delay
College: College of Engineering
Issue: 7
Start Page: 1164
End Page: 1174