Conference Papers
Permanent URI for this collectionhttps://idr.nitk.ac.in/handle/123456789/28506
Browse
5 results
Search Results
Item Renewable energy sources fed dual input full-bridge DC-DC converter for battery charging applications(Institute of Electrical and Electronics Engineers Inc., 2017) Kalpana, R.; Kiran, R.This paper proposes FPGA based dual input converter (DIC) for battery charging applications of 3 kW. The proposed system gives an alternative way of fusing the sources of DC in the magnetic form, instead of combining in the DC electrical form, by the addition of magnetic flux that is produced in the transformer magnetic core that works on the principle of flux additivity. A detailed design and the operation of the proposed dual input full-bridge DC-DC converter has been completely evaluated and presented in this paper. A constant frequency phase shifted PWM switching strategy has been preferred for the generation of gate pulses using FPGA controller board. The simulation analysis of the proposed converter has been executed utilizing MATLAB Simulink environment. A prototype of 1.5 kW has been developed and hardware results are presented to validate the theoretical waveform of the proposed dual input full-bridge DC-DC converter. © 2017 IEEE.Item Design and development of current source fed full-bridge DC-DC converter for (60V/50A)telecom power supply(Institute of Electrical and Electronics Engineers Inc., 2018) Kalpana, R.; Kiran, R.This paper addresses a dual input converter (DIC) for telecom power system of 3 kW using digital control algorithm. The proposed system gives an alternative way of fusing the sources of DC in magnetic form, instead of combining in the DC electrical form, by the addition of magnetic flux that is produced in the transformer magnetic core, which works on the principle of flux additivity. A detailed design, operation and control strategy of the proposed dual input isolated full-bridge step down DC-DC converter has been completely evaluated and presented in this paper. A constant frequency phase shifted PWM switching strategy have been preferred for the generation of gate pulses using FPGA controller board. The simulation analysis of the proposed converter has been executed utilizing MATLAB Simulink environment. A prototype for the proposed converter of 1.5 kW has been developed and experimental results are presented to validate the theoretical waveform of the proposed converter. © 2017 IEEE.Item Low Frequency Ripple Charging of Li-Ion Battery using Bidirectional Zeta DC-DC Converter to Improve Charge Transfer Efficiency(Institute of Electrical and Electronics Engineers Inc., 2018) Goud, J.S.; Kalpana, R.; Kiran, R.; Singh, B.Li-ion batteries are the most popular rechargeable batteries in applications like consumer electronics and electric vehicles in comparison with other rechargeable battery chemistries due to its high specific energy and longer life cycle. The reliability and life of the battery power devices depends on state of charge (SOC) and the charging protocol used for charging the battery. In this paper, low frequency ripple current (LFRC) charging of Li-Ion battery using the Zeta bi-directional DC-DC converter is presented. Charging the battery at the optimal frequency with ripple current results in improved charge transfer efficiency, improved charging time and thereby improves the life of the battery. To realize the LFRC charging technique, Zeta bidirectional converter and mathematical model of 48V, 4Ah Li-Ion battery is designed and simulated in MATLAB/ Simulink platform. Moreover, an experimental prototype is developed to validate the LFRC charging technique. © 2018 IEEE.Item Design and Development of Modular Dual-Input DC/DC Step Down Converter for Telecom Power Supply(Institute of Electrical and Electronics Engineers Inc., 2018) Kiran, R.; Kalpana, R.An isolated voltage source fed modular dual-input DC/DC converter with battery storage system for telecom load application is proposed in this paper. The proposed system has two individual inputs with rectifiers that are connected in parallel at secondary circuit for achieving constant voltage across the load. The proposed system integrates two energy sources resulting in an advantage of having compact structure with less number of components. Complete design of the proposed converter with FPGA based digital control strategy have been presented in this paper. The proposed control scheme aids in achieving stable current sharing of load current. Simple structure, current sharing of load and self-load regulation makes the converter configuration innovative for synchronized power management in dual-input telecom load application. The simulation analysis of the proposed converter has been executed utilizing MATLAB Simulink environment. A laboratory prototype has been developed and tested for 1.1 kW power. Simulation and hardware results validates the robustness of the proposed system under variable load as well as input voltage variation. © 2018 IEEE.Item Non-Isolated Multi-Port High Gain Interleaved Boost DC-DC Converter for Base Transceiver Station Application(Institute of Electrical and Electronics Engineers Inc., 2022) Smieee, K.R.; Smieee, S.P.P.; Fieee, B.S.; Kiran, R.; Ramya, A.S.This paper addresses a multi-port interleaved boost converter for base transceiver station (BTS) load with photovoltaic (PV) as a source and battery as backup energy storage device. The converter is designed to control the power flow from PV, battery and BTS load, and to regulate BTS load for 48V. In this paper, different modes of operations of converter are studied which depends on the availability of power from source and the battery. Further, steady state analysis and average state space equations of the proposed converter have been analysed. Furthermore, small signal modelling of the converter is carried out for the proposed converter. The MATLAB/SIMULINK based analysis has been carried out to verify the proper operation of the converter. © 2022 IEEE