Int. J. Power Electronics, Vol. 4, No. 5, 2012 479 Copyright © 2012 Inderscience Enterprises Ltd. Design and control of an LCL series parallel resonant converters using bacterial foraging optimisation Ehab H.E. Bayoumi Department of Electrical and Electronics Engineering Technology, Abu Dhabi Men’s College (ADMC), Higher Colleges of Technology, P.O. Box 25035, Abu Dhabi, UAE E-mail: ehab.bayoumi@gmail.com Abstract: The paper introduces a design technique for robust PID controllers for inductance capacitance inductance-T network (LCL-T) series parallel resonant converts. AC analysis and stability analysis for LCL-T series parallel converter are premeditated. The converter controllers’ designs are based on bacterial foraging optimisation (BFO). A BFO algorithm is utilised in order to obtain the controller parameters and guarantee superior step response performance criterion. Simulation results of the designed controllers are compared with that of conventional controllers whose parameters are tuned by using will known Ziegler-Nichols technique. Results imply the perfection of the proposed technique over the conventional method. Experimental measurements of system performance validate the proposed technique and emphasise its feasibility. Keywords: resonant converter; bacterial foraging optimisation; BFO; PID controller. Reference to this paper should be made as follows: Bayoumi, E.H.E. (2012) ‘Design and control of an LCL series parallel resonant converters using bacterial foraging optimisation’, Int. J. Power Electronics, Vol. 4, No. 5, pp.479–504. Biographical notes: Ehab H.E. Bayoumi obtained his BS from Helwan University and MS from Ain Shams University, Egypt in 1988 and 1996, respectively. He earned his PhD from Cairo University, Egypt in collaboration with Lappeenranta University of Technology (LUT), Finland in 2001. He has been with Electronic Research Institute (ERI) Egypt since 1990. From 2000 to 2001, he joined LUT, Finland as a Visiting Researcher. He was appointed as an Assistant Professor at Chalmers University of Technology (CTH), Sweden from 2003 to 2005. He is an Associate Professor at ERI, Egypt, and currently on leave to Abu Dhabi Men’s college (ADMC), United Arab Emirates. His research interests include high performance AC machines, power quality, switching power converters, DSP-based control applications, and non-linear control applications in power electronics and electric drive systems.