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Abstract
In this paper, a non-isolated inductor-capacitor-capacitor (LCC) topology based DC-DC converter for automotive application is practically implemented. The resonant tank with one inductor and two capacitors provides soft switching of the inverter switches and a voltage gain of 2. All possible LCC topologies are listed and categorized based on the order of their voltage gain expression. Based on the source/sink requirement for automotive application, some topologies are found to be realizable. For all these realizable topologies, voltage gain expressions are obtained and plotted against normalized frequency. From the voltage gain plots, one candidate topology is chosen and analyzed further. Expressions for current gain, stress across resonant tank elements, circulating reactive power and stored energy in the tank are obtained. The optimum value of Q which results in smallest possible resonant tank is determined and is found to be 0.545. The resonant tank is designed and implemented based on the optimum value of Q. Experimental results show that soft switching is achieved for a wide load range and is suitable for automotive application.
Additional information
Notes on contributors
M. Prabhakar
M. Prabhakar received his B.E. from University of Madras in the year 1998 and M.E from Bharathidasan University in the year 2000. He is currently pursuing his Ph.D in Anna University, Chennai. His areas of interest include DC - DC converters and power electronics. E-mail: [email protected]
V. Kamaraj
V. Kamaraj obtained his B.Tech. from Calicut university, M.E. and Ph.D. form Anna University. He has 20 years of teaching experience. His area of research includes networks and power electronics. E-mail: [email protected]