Conference Papers
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Item Analysis and Design of a Three Phase Interleaved CLL Resonant Converter with Fixed Frequency Modified PWM Control(Institute of Electrical and Electronics Engineers Inc., 2021) Patil, U.; Nagendrappa, H.A Three-phase interleaved CLL resonant DC-DC converter with fixed frequency modified PWM gating pattern is presented in this paper. The main benefit of the interleaving technique of the converter is to achieve higher power level, while reducing the size of filters due to lower ripples. Three identical single-phase full bridge inverter circuits with CLL resonant tank are allied in parallel on the primary of the high-frequency (HF) transformer. The operating modes of the converter for different intervals are explained with the aid of key operating waveforms. The fundamental harmonic approximation (FHA) approach is used to carry out the steady-state analysis of the converter. A 600W converter is designed and the design method is explained. PSIM simulations are done to substantiate the calculated predictions of the converter for distinct operating conditions. © 2021 IEEE.Item Four-Phase Interleaved Bidirectional DC-DC Converter for Battery Energy Storage System(Institute of Electrical and Electronics Engineers Inc., 2023) Kumar, V.; Nagendrappa, H.This paper presents the operation of a DC-DC converter for bidirectional power transfer with battery energy storage system. The converter topology under study resolves the existing disadvantages of conventional buck - boost bidirectional converter and provides benefits in terms of reduced size with higher efficiency and lower input source ripple current. The performance of non-isolated 4-phase interleaved buck-boost bidirectional converter has been studied using MATLAB simulations. In order to get a better insight, this paper proposes a control method that takes the interaction of 4phase currents into account. In boost mode operation, battery is getting discharged while it maintains the DC bus voltage. In buck mode operation, battery is getting charged at constant current. The design of non-isolated four-phase interleaved bidirectional converter of 150 kW with simulation results are presented to validate the design and performance of the converter. © 2023 IEEE.