Faculty Publications

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Author: search.filters.author.Gangashetty, P.A.

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    Multi-port Converter Topology for Simultaneous Power Conversion of Buck/Boost and Inversion operation
    (Institute of Electrical and Electronics Engineers Inc., 2022) Gangashetty, P.A.; Karthikeyan, K.
    Multiport converters are given more importance for different applications due to the advantages such as high efficiency, high power density and low cost. Each multiport converter topology has different number of power processing stages, different number of switches and different control techniques. This paper proposes a single-stage multiport power converter topology for integrating PV-Battery to the three phase ac load application. Power flow between all the three ports are managed using Finite Control Set Model Predictive technique. The proposed converter has reduced number of switches and conversion stages to connect PV and battery to the three phase ac load system compared to conventional switches. The converter topology is based on bidirectional simultaneous power conversion of dc/dc and dc/ac system. The topology allows the connection of a low voltage battery that acts as a buffer in the standalone system. Simulation results show the efficacy of the multiport bidirectional converter to manage the power flow between PV- Battery connected to three-phase ac load system. © 2022 IEEE.
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    Enhanced Power Management in Multiport Converter with SRF-PI Control and SVPWM for PV-Battery Standalone Systems
    (Springer, 2025) Gangashetty, P.A.; Karthikeyan, K.
    This paper presents a novel single-stage three-port power converter topology for standalone renewable energy systems that integrate photovoltaic (PV) generation and battery energy storage to supply a three-phase AC load. The proposed converter architecture combines a multi-phase bidirectional interleaved direct current-to-direct current (DC/DC) converter with a full-bridge inverter, forming a compact and modular power interface that reduces the number of conversion stages and minimizes component count and volume. A synchronous reference frame-based proportional–integral (SRF-PI) controller is employed for decoupled regulation of the DC-link and AC output voltages, while Space Vector Pulse Width Modulation (SVPWM) ensures fixed-frequency switching and optimal DC bus utilization. The control strategy enables effective power flow management between the PV, battery, and load under dynamic irradiance and load variations. Real-time implementation on an FPGA-based platform validates the feasibility and performance of the proposed control method, with a 300 W experimental prototype demonstrating practical applicability. The system is also modeled and simulated in MATLAB/Simulink to evaluate transient and steady-state behavior under different operating conditions. A comparative analysis with the Finite Control Set Model Predictive Control (FCS-MPC) technique highlights that the SRF-PI controller offers improved lower transient overshoot, reduced steady-state error, and superior power quality while significantly reducing the computational burden and implementation complexity. The proposed system offers a scalable, efficient, and hardware-friendly solution suitable for standalone PV-battery-based microgrids and rural electrification applications. © The Author(s), under exclusive licence to Springer Nature Singapore Pte Ltd. 2025.