Conference Papers
Permanent URI for this collectionhttps://idr.nitk.ac.in/handle/123456789/28506
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Item PV Array Dynamic Reconfiguration by leveling the Solar Irradiance under Partial Shading Conditions(Institute of Electrical and Electronics Engineers Inc., 2022) Kumar, D.; Raushan, R.Solar photovoitaic (PV) energy generation system is the major part of renewable energy that can full-fill the growing demands and reduction in conventional energy at negligible op-erating cost with nil greenhouse gas emission. However, efficiency of Solar PV needs to be enhanced, and it can be achieved by PV array reconfiguration along with maximum power point tracking (MPPT). However, the reconfiguration based on physical relocation of the modules is time consuming and limited to known shading patterns and small PV energy generation systems. Therefore, PV Array Dynamic Reconfiguration by leveling the solar irradiance is proposed in this paper. After reconfiguration, the global maximum power point is tracked by the P and O optimization technique. The main advantage of the proposed technique is the reduction of the number of switches applied for the reconfiguration under partial shading conditions. © 2022 IEEE.Item A Novel Common Neutral Line Thirteen-Level Switched Capacitor Boost Inverter with Inductive load ability(Institute of Electrical and Electronics Engineers Inc., 2023) Kumar, D.; Raushan, R.In recent times, researchers have been trying to reduce the number of switches and boost the voltage gain in the multilevel inverter (MLI). It can be accomplished easily in mid-point switched capacitor MLI. However, while doing so, the voltage stress on the semiconductor devices increases significantly, which reduces the inverter's reliability. In addition, it is unable to reduce the leakage current in solar photovoltaic applications. Therefore, A novel single-source common neutral line thirteen-level switched capacitor boost inverter is proposed in this paper. It has lesser voltage stress on semiconductor devices, a sixfold voltage-boosting ability, and good reliability. Moreover, its common neutral line provides the features of a common grounding, which allows it to be used in solar PV systems, as it reduces leakage current significantly. To operate the proposed inverter, the nearest level control technique has been implemented in MATLAB/Simulink. The results have been analyzed and discussed to show the goodness of the inverter. The comparison analysis has also been included to strengthen the effectiveness of the proposed inverter. © 2023 IEEE.Item Neural Network-Based Sensorless Control of Flyback Converter for Cell Balancing(Institute of Electrical and Electronics Engineers Inc., 2025) Premarajan, P.; Raushan, R.; Bhushan, R.A conventional control system with an active clamp flyback converter uses a feedforward method that involves feeding the input to a mathematical model beforehand to adjust the duty cycle accordingly. The feedforward method uses a mathematical model that involves a lot of calculations to obtain an efficiency alike feedback system. Integrating a neural network trained with a feedback system data output can be used as a replacement for the mathematical model to have performance as par with the feedback system. Sensors are used to measure the voltages for the feedback circuit to work. This work investigates the potential of utilizing a neural network to enable sensorless operation within a feedforward control system to regulate the voltage input to the cell balancina system. © 2025 IEEE.Item Renewable Power Integration for Electric Vehicle Charging System: A Review(Institute of Electrical and Electronics Engineers Inc., 2025) Nirala, P.K.; Barik, A.K.; Bhushan, R.; Jagtap, K.M.; Raushan, R.This review paper accentuates on the conceivable integration of renewable based generations to the charging stations of Electric Vehicles (EVs) towards restraining the carbon emissions. The intensifying global demand for EVs in recent days puts stress on conventional grid with existing infrastructure, which could be relaxed by integration of renewable based power generations with ecological balance. The importance and feasibility of renewable integrations to charge the EVs are reviewed in this paper and suitable applications are reported to develop charging infrastructures for EVs. The importance of vehicle to grid (V2G) concept is also reviewed to facilitate ancillary support to future grid integrated with renewables. © 2025 IEEE.Item Digital Control System Based Isolated Totem Pole Converter for Electric Vehicle Onboard Chargers(Institute of Electrical and Electronics Engineers Inc., 2025) Das, A.K.; Raushan, R.; Kumar, P.The Totem-Pole converter is well-suited for lowpowered electric vehicle (EV) applications. The isolated configurations of such converters provide single-stage power conversion that overcomes the more conversion stages. A robust controller can satisfy the converter operations efficiently for on-board charging applications. In this paper, a modified digital control method for totem-pole PFC cascaded active flyback DC-DC converters functioning in discontinuous conduction mode (DCM) is proposed. The auxiliary switch and clamp capacitor are used to recycle the stored energy in the transformer to reduce the spike voltage. The main purpose of adding PFC is to obtain the input current in phase with the input voltage, keeping total harmonic distortion (THD) low to improve the efficiency of the converter. © 2025 IEEE.