Title: Optimal control topology-based efficiency improvement of single-stage three level resonant AC/DC converters
Authors: B. Perumal; I. Gnanambal
Addresses: Department of EEE, Adhiyamaan College of Engineering, Hosur, Tamil Nadu, India ' Department of EEE, Government College of Engineering, Salem, Tamil Nadu, India
Abstract: In this paper, an optimal control topology for improving the efficiency of AC-DC three level single stage power factor correction (SSPFC) converter using artificial bee colony (ABC) algorithm is proposed. ABC algorithm is one among the renowned algorithms that utilises the cleverness of swarm bees and it imitates the food searching nature as well as the dancing activities of actual bee colonies. The ABC algorithm optimises the gain parameters based on the converter's output load voltage variations. From the attained gain parameters, the minimum load voltage variation has been achieved. By using the proposed method, the converter's switching component stresses, high circulating current, total harmonic distortion (THD) and low efficiency has been reduced. In addition, the proposed optimal control topology is dependent on the converter's input value as well as the load value changes and it maintains constant conversion efficiency with improved power factor. The proposed circuit is implemented in the MATLAB/Simulink platform and the effectiveness is analysed by comparing it with the conventional techniques. The comparison results demonstrate the superiority of the proposed approach and confirm its potential to solve the problem.
Keywords: AC-DC converters; artificial bee colony; ABC; conversion efficiency; gain parameters; load voltage; total harmonic distortion; THD; power factor; metaheuristics; swarm intelligence; optimal control topology; single stage PFC; power factor correction; simulation.
International Journal of Automation and Control, 2017 Vol.11 No.3, pp.314 - 338
Received: 08 Jul 2016
Accepted: 28 Aug 2016
Published online: 24 Mar 2017 *