Hardware Implementation of Fuzzy Logic Controller for Triple-Lift Luo Converter
N. Dhanasekar1, R. Kayalvizhi2
1N. Dhanasekar, Associate Professor, Department of Electrical and Electronics Engineering, A.V.C College of Engineering, Mayiladuthurai, India.
2Dr. R. Kayalvizhi, Professor, Department of Electronics and Instrumentation Engineering, Annamalai University, India.
Manuscript received on April 22, 2017. | Revised Manuscript received on April 29, 2017. | Manuscript published on March 05, 2017. | PP: 17-21 | Volume-7 Issue-2, May 2017. | Retrieval Number: B2988057217/2017©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: Positive output Luo converters are a series of new DC-DC step-up (boost) converters, which were developed from prototypes using voltage lift technique. These converters perform positive to positive DC-DC voltage increasing conversion with high power density, high efficiency and cheap topology in simple structure. They are different from other existing DC-DC step-up converters with a high output voltage and small ripples. Triple lift LUO circuit is derived from positive output elementary Luo converter by adding the lift circuit three times. Due to the time varying and switching nature of the Luo converters, their dynamic behavior becomes highly non-linear.The classical control methods employed to design the controllers for Luo converters depend on the operating point so that it is very difficult to select control parameters because of the presence of parasitic elements, time varying loads and variable supply voltages. Conventional controllers require a good knowledge of the system and accurate tuning in order to obtain the desired performances. A Fuzzy Logic Controller(FLC) is a soft computing technique which neither requires a precise mathematical model of the system nor complex computations. Hence in this research work, design and hardware implementation of fuzzy logic controller have been carried out using TMS320C242 DSP for the Triple-lift Luo converter .The experimental results are presented and analyzed under line and load disturbances.
Keywords: Fuzzy Logic Controller, Triple-lift Luo converter, Digital Signal Processor (DSP).