Optimal Tuning of PI Controller using Bacterial Foraging Algorithms for Power Electronic Converter
B. Achiammal1, R.Kayalvizhi2
1B.Achiammal, Professor of Electronics and Instrumentation Engineering, Annamalai University, India
2Dr. R.Kayalvizhi, Professor of Electronics and Instrumentation Engineering, Annamalai University, India.
Manuscript received on October 28, 2013. | Revised Manuscript received on November 04, 2013. | Manuscript published on November 05, 2013. | PP: 235-239 | Volume-3 Issue-5, November 2013. | Retrieval Number: E1946113513/2013©BEIESP
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© The Authors. Published By: Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: DC-DC converters are widely used in application such as computer peripheral power supplies, car auxiliary power supplies and medical equipments. Positive output element Luo converter performs the conversion from positive source voltage to positive load voltage. Due to the time- varying and switching nature of the power electronic converters, their dynamic behaviour is highly non-linear. Conventional controllers are incapable of providing good dynamic performance and hence optimized techniques have been developed to tune the PI parameter. In this work, Bacterial Foraging (BF) algorithm and Modified Bacterial Foraging (MBF) algorithm are developed for PI optimization. Simulation results show that the performances of BF-PI and MBF-PI controllers are better than those obtained by the classical ZN-PI controller.
Keywords: PID controller, DC-DC converter, positive elementary Luo converter, Bacterial Foraging Algorithm, Modified Bacterial Foraging Algorithm.