Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

The degrading performance of high frequency DC-DC converters due to Electro Magnetic Interference (EMI) must be encountered utterly. Use of chaotic PWM is an effective way to reduce the EMI, by which the entire energy can be completely spread out uniformly over the frequency band. Since, the generation of chaotic carrier in practical cases is comparatively difficult, here in this work, chaotic mapping is incorporated to convert the periodic saw tooth carrier into chaotic one. The primary sources of EMI such as di/dt and dv/dt due to rapid switching were controlled significantly by the soft switching technique which is combined with chaotic PWM to suppress electromagnetic interference. This combined approach also results in reduced switching losses and hence ameliorates the efficiency of the boost converter. © 2014 IEEE.

Department of Energy and Power Electronics

School of Electrical Engineering

Vellore Campus

VIT Unitversity

2014 International Conference on Advances in Electrical Engineering (ICAEE)

EMI mitigation in closed loop boost converter using soft switching combined with chaotic mapping

The aim of this paper is to optimize the system after restoring and reconfigure the faulted area in a distribution network after isolating the faulted block. Restoration involves changing the switch status to maximize the supply to loads that are left unsupplied after fault removal. After system optimization using reconfiguration, Field Programmable Gate Array (FPGA) is used in order to control the switches by generating the pulses for the stable configuration. In the proposed system restoration and reconfiguration process is achieved in 16 bus system and simultaneously load flow analysis is performed before and after the fault and the same is verified in MATLAB. Optimization using Binary Particle Swarm Optimization (BPSO) is done in order to get the most stable configuration for restoration process by minimizing the LBI (Load Balancing Index). © 2005 - 2012 JATIT &amp; LLS. All rights reserved.

Department of Electrical Engineering

Journal of Theoretical and Applied Information Technology

A new power system restoration and reconfiguration using field programmable Gate Array

Nowadays the electromagnetic interference (EMI) causes a major problem in power electronic circuits particularly in high frequency application, this problem is more severe. There are a lot of techniques to reduce the EMI. But in higher frequency application the efficiency of other methods are low. In order to reduce the EMI in high frequency application the special technique called Chaotic PWM control method is used. This paper deals with the suppression of EMI in Boost converter. The result of this paper shows that Peak of the EMI will be reduced by the entire frequency band and also it reduces the entire range of frequency band. Simulation results are compared for the normal traditional PWM converter and analogue method of chaotic PWM pulse converter. ORCAD/PSPICE simulation tools are used to simulate the circuit. Here dc-dc converters are made to operate in chaotic mode, so that it can generate the spread spectra, which are used to mitigate EMI effectively. To analyze the spectrum, Fast Fourier Transform (FFT) method is used. Finally, the different simulation models are presented and with this simulation, one can able to analyze the effectiveness of reducing EMI in Boost converter circuit.