Conference Papers
Permanent URI for this collectionhttps://idr.nitk.ac.in/handle/123456789/28506
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Item High Gain Modified Boost Converter for Electric Vehicle Battery Charging(Institute of Electrical and Electronics Engineers Inc., 2019) Darbha, L.T.S.; Parthiban, P.In this paper, a modified boost converter topology for electric vehicle charging from a photovoltaic source is proposed. The proposed topology offers higher voltage gain and lower ripple content over the conventional boost converter. Investigations into the characteristics of lithium battery load, selection of the photovoltaic panel rating are discussed. Simulation studies on the performance of conventional and modified boost converter are performed with a resistive load using MATLAB/ Simulink. Experimental results validate the simulation studies. The proposed topology has a single switch and results indicate higher voltage gain with a 22 V input stepped up to 51 V and higher output voltage with a 48 % moderate duty cycle. © 2019 IEEE.Item Modeling and Analysis of Average Torque Control Strategy on Switched Reluctance Motor for E-mobility(Institute of Electrical and Electronics Engineers Inc., 2021) Pillai, A.; Anuradha, S.; Gangadharan, K.V.; Umesht, P.; Bhaktha, S.This paper investigates the Average Torque Control (ATC) approach for an electric scooter application using a 250W, Outer-rotor type, 8/6 Switched Reluctance Motor (SRM). It also employs a search algorithm based on a multi-objective function to determine optimum excitation angles to increase SRM drive performance. The MATLAB/Simulink environment is used to model and analyze the SRM drive control system. The simulation results demonstrate the drive system's smooth efficiency with reduced torque ripple over a speed range due to the optimum turn-on and turn-off angle selection. The ATC technique is selected as an ideal alternative for the SRM drive control system against other control strategies due to the wide-speed range application in an electric scooter. © 2021 IEEE.Item A Fault Tolerant Nine-level Inverter Topology with Full DC Utilization for Electric Vehicle Application(Institute of Electrical and Electronics Engineers Inc., 2022) Aditya, K.; Yellasiri, Y.; Shiva Naik, B.S.; Nageswar Rao, B.N.In this study, a fault-tolerant nine-level inverter architecture for an electric vehicle application is presented. Although the importance of two-level inverters [1] is well-known in EV applications, it contains significant unwanted harmonics for generated voltage. As replacing a two-level inverter proliferates the quality of power with a multilevel inverter, it is considered one of the efficient ways. Even though multilevel inverters' essence considerably reduces total harmonic distortion. Eventually, the size of the filter requirement also will minimize. Because of the increased device count and capacitor voltage balance issues, we have a slew of reliability concerns. As a result, a fault-tolerant nine-level inverter built by cascading H-Bridge [2] and modified T-type voltage source inverters [3] and a bidirectional switch are presented. With the tiniest changes in the switching combinations, the provided inverter topology can sustain system faults caused by the failure of the source and/or switching devices. Subsequently, When compared to standard nine-level inverters, it features fewer switching devices. The results are observed and validated with a hardware platform while the suggested system is simulated in a MATLAB/Simulink environment under standard and malfunctioning settings. © 2022 IEEEItem Frequency Filtering in Ultracapacitor-Battery Energy Storage System in Electric Vehicles(Institute of Electrical and Electronics Engineers Inc., 2022) Raikar, S.B.; Saha, A.; Vittal, K.P.The Energy Storage System (ESS) of an Electric Vehicle (EV) needs to have both high-power density and high-energy density to fulfil the transient power requirement during vehicle accelerating and decelerating and also to have better driving range. Both of these goals can be achieved through the hybridization of energy sources. In this study, a battery and an Ultracapacitor (UC) combination is used to construct a fully-active Hybrid Energy Storage System (HESS). The HESS architecture is built using two bidirectional DC-DC converters, each one for the two energy sources, respectively, and a DC bus. HESS is sized using vehicle dynamic modelling considering the New European Driving Cycle (NEDC). A rule-based power sharing strategy is employed for the HESS. Further, two frequency filtering-based approaches, namely the Low Pass Filtering (LPF) approach and the Wavelet multilevel Haar Transform, have been developed to control the power flow between the energy sources of HESS and reduce overall battery stress during high transient power demand. For the same driving cycle, different power management strategies are compared in terms of battery status (current, SOC, energy) as well as the UC status (current, energy) followed by battery lifetime extension. The main goal of this study is to investigate the performance of an UC-battery HESS for EVs using the MATLAB/Simulink environment. © 2022 IEEE.Item Novel Nine-level Inverter Topology with Boosting Ability for Electric Vehicle Application(Institute of Electrical and Electronics Engineers Inc., 2023) Aditya, K.; Yellasiri, Y.; Shiva Naik, B.S.; Nageswar Rao, B.N.; Karunakaran, E.; Reddy, R.D.This paper proposes a new switched-capacitor (SC) based multilevel inverter (MLI) with a boosting gain of four for electric vehicle (EV) applications. The proposed SC-based ninelevel quadruple boost inverter (SC-NLQBI) topology consists of 13 semiconductor switches, three capacitors, and a single input DC supply. It generates nine level voltage waveform, which lessens the requirement for extra filters. Compared to the current nine-level inverter, the new SC-NLQBI topology is simple, compact, and requires fewer parts. Here, a simple triangular carrier signal-based sinusoidal pulse width modulation (SPWM) method is used to generate the required gating pulses. While the proposed topology is being modeled in a MATLAB/Simulation platform using both normal and problematic conditions, the results are analyzed. © 2023 IEEE.Item State and Parameter Estimation of Lithium-Ion Battery using Dual Extended Kalman Filter(Institute of Electrical and Electronics Engineers Inc., 2023) Kalpana, R.; Radhakrishnan, S.Electric vehicles (EVs) are becoming more popular around the world on a daily basis. Therefore, managing power flow in EVs requires efficient and cutting-edge battery management technologies. Accurate SOH and SOC measurement is essential for a successful BMS. The driver needs a precise estimate of the battery's State of Charge of the electric vehicle (EV) at the end of a journey. Range anxiety can be lessened and the trip can be planned with the use of this knowledge. Since the battery's SOC and SOH cannot be monitored directly, an accurate estimation of these quantities is required to provide a precise driving range. estimated accurately to provide an exact driving range. The goal of this work is to develop a Dual Extended Kalman-based approach for Lithium-ion battery State of Charge and State of Health determination that is accurate. © 2023 IEEE.Item Bipolar Duty Cycle Control for Dual Side LCC Compensated Inductive Power Transfer System for Wide Output Voltage Range(IEEE Computer Society, 2024) Kishan, D.; Chub, A.; Vinod, M.This paper proposes a hybrid phase shift control strategy for dual side inductor-capacitor-capacitor compensated inductive power transfer (IPT) system to achieve a wide output voltage regulation range. The first-order harmonic time domain model is used to compute the inverter output voltage. Then, models of system operation in constant voltage (CV) and constant current (CC) modes are developed to analyze the efficiency of the battery charging process. The designed controller loops are validated for a 1 kW MATLAB Simulink model. Results show that a maximum efficiency of 93.80% is achieved at full load conditions, and the proposed control strategy achieves zero voltage switching (ZVS) in more switches than the conventional control method. © 2024 IEEE.Item A Novel Orbirect Inductive Coil Structure for Wireless Inductive Power Transfer in Electric Vehicle Battery Charging Applications(IEEE Computer Society, 2025) Kishan, D.; Ghosh, S.; Chauhan, S.; Chub, A.Wireless battery charging systems for electric vehicles (EVs) are convenient, safe, and flexible against environmental hazards. Resonant inductive power transfer (RIPT) is the most common method for EV battery charging applications. The inductive coil structure is a major component of the RIPT system, and misalignment between inductive coils is a key issue. This paper proposes an improved, misalignment-tolerant, novel dual orbirect inductive coil structure. The proposed coil structure is designed using finite element modeling (FEM) and investigates magnetic parameters such as self and mutual inductance at various horizontal and vertical misalignment distances. Finally, based on the FEM analysis, the RIPT system is designed for 1 kW, and simulations were carried out in MATLAB. The presented results show that the output voltage exhibits minimal variation across 50% misalignment range. The peak efficiency achieved at full load conditions is 96.2%. © 2025 IEEE.