Sudarshan B S

@acharya.ac.in

Assistant Professor, Department of Electrical and Electronics Engineering
Acharya Institute of Technology

Sudarshan B S


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https://researchid.co/sudarshanbs

EDUCATION

M.Tech

RESEARCH, TEACHING, or OTHER INTERESTS

Electrical and Electronic Engineering, Energy Engineering and Power Technology
9

Scopus Publications

48

Scholar Citations

3

Scholar h-index

2

Scholar i10-index

Scopus Publications

  • Single-Input Multi-Isolated-Output SEPIC-Ćuk Converter for E-Bike Charging: Modeling, Design, and Prototype Implementation
    B. S. Sudarshan, G. Arunkumar, Gokull Sridhar, Kashish Mittal
    Energy Storage, 2025
    As the global automotive industry shifts towards greater electric vehicle (EV) adoption, developing countries have also increased their funding for EV infrastructure development. As more charging stations are built, it also becomes critical to ensure that the waiting time before charging is reduced. Reducing waiting times will be crucial in promoting EV adoption. The majority of individuals prefer using electric two‐wheelers, such as electric bikes (e‐bikes). The e‐bikes use low‐voltage batteries, which need low power. Therefore, it is crucial to implement chargers that are suited to charge low‐voltage, low‐power EVs. This study proposes a single‐input multi‐output (SIMO) modified SEPIC‐Ćuk Combined Isolated DC‐DC Converter for charging low‐ and medium‐voltage batteries with varying power levels. The modes of operation are described in detail with the pertinent dynamic equations. The non‐ideal modeling of the proposed converter parts is detailed. Calculations of the currents and voltages of the components are provided after presenting the converter design for the considered specifications. A detailed design of the high‐frequency transformer is provided with the corresponding design equations. The criteria for the selection of components are described, along with the importance of testing the transformer frequency range. Simulation results are provided to validate the calculations, and the converter hardware prototype is implemented to validate the operation and novelty. The high frequency of MOSFET switching ensures a reduced size of inductors and capacitors, leading to a reduced converter size. The proposed converter is a novel isolated DC‐DC converter that can be used to charge three EV batteries of different voltage levels simultaneously for low‐ and medium‐power EV applications.
  • Analysis of Power Managment in a Grid Connected PV System with Energy Storage Device
    S D Sandeep, B S Sudarshan, Pratap Sekhar Puhan
    1st International Conference on Sustainable Energy Technologies and Computational Intelligence Towards Sustainable Energy Transition Setcom 2025, 2025
    Power management analysis in microgrid system is one of the important research areas in the recent age. In this paper, a PV integrated Grid sytem with energy storage back up is developed to analyze the power management. All the generating units and the battery is interconnected through different types of converters. The battery is used as backup enrgy source and it is operated when solar fails to generate and in the condition of low power generation. To keep the system stable and of high quality, an inverter controller must be used. To extract maximum power, the Maximum Power Point Tracking (MPPT) approach is also used. The suggested system uses the power management technique to control the correct operation of every unit and the power distribution between the grid and battery. It also effectively monitors the battery’s charge level while it is operating. To regulate the power flow, a bidirectional converter is linked to the battery. With the aid of an inverter, the DC output from the PV and battery is supplied to the grid and load. After the reference current is generated using PMA and a proportional integral controller (PI), all of the related converters switch. Through simulation, the suggested work’s efficacy is confirmed.
  • Modeling, design and validation of DC-DC landsman converter for low-power electric vehicle battery charging applications
    Kuldip Bag, Mohit Pankaj Mundra, Patil Swarup Sadashiv, Sudarshan B S, Arunkumar G
    Engineering Research Express, 2024
    As the world moves towards sustainable development, the reduction of air pollution is considered an important factor. Consequently, the transportation sector is moving from conventional internal combustion engine vehicles to electric vehicles (EVs). To encourage EV usage, governments are working towards installing more public charging systems. These systems invariably use a DC-DC converter to ensure the supply of an appropriate voltage to charge the battery. In developing countries, the majority of users prefer electric bikes and electric rickshaws, which require low power. Therefore, it becomes necessary to use low-power converters suitable to charge these batteries. In such systems, non-isolated DC-DC converters play an important role. This work is intended to explore the use of the Landsman converter for EV battery charging. The motivation behind the work is explained, and the state of the art of EV battery charging research is reviewed to show the research gap. The operation of the proposed converter is explained in detail with its dynamic loop and nodal equations. The gain equation and the memory elements design are detailed with the corresponding equations. The model of the proposed converter is provided with the loss calculation. The system is simulated on MATLAB R2022b software, and the simulation results are provided to show the behavior of voltage and current in each component. To validate the design, a 100 W hardware prototype is implemented using discrete components to supply a resistive load, and to charge a 48 V Li-ion battery. The corresponding results are provided to validate the design and operation. A comparison of the proposed converters’ performance parameters with other non-isolated converters is provided. The topology is seen to provide an instantaneous efficiency of 88% during the prototype testing for resistive load, and an efficiency of 89.6% while charging a 48 V Li-ion battery, wherein, the efficiency magnitudes are the experimental values obtained through real-time measurements on Keysight IntegraVision Power Analyzer PA2203A, during the testing of the hardware prototype, as presented in section 8. Consequently, Landsman converter is seen to be an attractive converter for EV battery charging applications.
  • Experimental Analysis of Quasi Z Source Resonant Converter at Fixed Frequency Phase Shift Modulation
    Santoshkumar M. Hunachal, Arunkumar G, Pulipaka Srikanth, Sudarshan B S
    Proceedings of the International Conference on Power Electronics Drives and Energy Systems for Industrial Growth Pedes, 2024
    A single-stage conversion topology called a quasi-z source resonant converter (QZSRC) was designed for dual port charging to overcome multistage power conversion in the conventional multiport resonant converter. Using varied magnetizing inductance ratios, the suggested QZSRC work analyzes power sharing and efficiency for even and uneven voltage levels. The proposed converter can charge two batteries at a fixed frequency with a conventional PWM. However, the overall efficiency is affected by conventional PWM. This employed fixed frequency phase shift modulation (FFPSPWM) to the quasi z source resonant converter-based dual port charger to solve this problem. The proposed converter steady state analysis has been discussed, and experimentally testing a 400 W laboratory prototype on both chargers yielded a 91.8% efficiency.
  • SiC switch-based isolated DC-DC converter for simultaneous charging of Li-ion batteries of different voltage ratings for low- and medium-power electric vehicle battery charging application
    Sudarshan B S, Arunkumar G
    International Journal of Circuit Theory and Applications, 2023
    SummaryThe use of electric vehicles (EVs) has gained traction in recent years. With the widespread use of EVs in the future, the waiting time before charging will be high due to the use of slow chargers in developing countries. This work proposes a novel DC‐DC converter based on an isolated single‐ended primary inductor converter (SEPIC) and isolated Ćuk converter to enable simultaneous charging of batteries of low‐ and medium‐power EVs. The proposed converter operates without spikes in input and output currents, even during a sudden source disturbance. It can charge one battery at the output voltage level and simultaneously charge two batteries at half the output voltage. Simulation results for open‐loop and closed‐loop operations are provided to validate the converter operation and the simplicity of control. The proposed converter operation has been experimentally validated using a scaled‐down prototype by charging one 48 V lithium‐ion battery and then simultaneously charging two 24 V lithium‐ion batteries. The converter's response is provided to present the novelty and advantages of the proposed converter. The proposed converter uses fewer switches, diodes, inductors, and capacitors. The size of the system is reduced due to the high switching frequency operation of SiC devices. A low‐side gate driver is sufficient for driving the MOSFET, and the control is simple. The proposed converter offers a new and simple converter to charge multiple low‐ and medium‐power EV batteries of different ratings simultaneously with a low component count.
  • Isolated DC-DC Power Converters for Simultaneous Charging of Electric Vehicle Batteries: Research Review, Design, High-Frequency Transformer Testing, Power Quality Concerns, and Future
    Srinath Belakavadi Sudarshan, Gopal Arunkumar
    Sustainability Switzerland, 2023
    The transportation industry is transitioning from conventional Internal Combustion Engine Vehicles (ICVs) to Electric Vehicles (EVs) due to the depletion of fossil fuels and the rise in non-traditional energy sources. EVs are emerging as the new leaders in the industry. Some essential requirements necessary for the widespread adoption of EVs include sufficient charging stations with numerous chargers, less to no wait time before charging, quick charging, and better range. To enable a quicker transition from ICVs to EVs, commercial organizations and governments would have to put in a mammoth effort, given the low number of installed chargers in developing nations such as India. One solution to lower the waiting time is to have multiple vehicles charging simultaneously, which might involve charging two- and four-wheelers simultaneously, even though their battery voltage ratings differ. This paper begins by providing the details of the power sources for EV charging, the charging levels and connector types, along with the specifications of some of the commercial chargers. The necessity of AC-DC converters in EV charging systems is addressed along with the power quality concerns due to the increased penetration of EVs. Next, a review of the existing research and technology of isolated DC-DC converters for simultaneous charging of EV batteries is provided. Further, several potential isolated DC-DC converter topologies for simultaneous charging are described with their design and loss estimation. A summary of the existing products and projects with simultaneous charging features is provided. Finally, insight is given into the future of simultaneous charging.
  • Power Loss Analysis and Validation of the SEPIC-Ćuk Combined Isolated DC-DC Converter
    Sudarshan B S, Arunkumar G
    2023 Innovations in Power and Advanced Computing Technologies I Pact 2023, 2023
    In developing countries where majority of the population depends on petrol-and diesel-based vehicles, Electric Vehicles (EVs) will play a major role in carbon footprint reduction. One of the primary requirements for encouraging EVs is to increase the number of charging stations. However, the issue related to waiting time before charging often gets neglected. This work proposes a novel DC-DC conversion system that combines the Single Ended Primary Inductor Converter (SEPIC) and Ćuk topologies. The operation and design of the proposed topology has been provided and the calculation of the losses in the various components of the circuit has been detailed for the specifications considered. Hardware results for charging of one 48 V Li-ion battery has been presented to compare the overall loss for validation. The proposed topology is derived to charge one EV battery at the design output voltage level and to simultaneously charge two batteries at half the output voltage, and is specifically suited for low-voltage, low-power e-bikes and e-rickshaw battery charging. The system uses fewer switches, thus making the control simple. High switching frequency operation leads to reduction in size and weight.
  • Experimental Analysis of Power Sharing in a Single-Input-Dual-Output-based Quasi-Z Source Resonant Converter
    Santoshkumar M. Hunachal, G Arunkumar, B S Sudarshan, P R Shankar
    2023 11th National Power Electronics Conference Npec 2023, 2023
    Conventional multiport resonant converters operate in two-stage power conversion, and frequency modulation is the mainstay of conventional load regulation techniques for traditional resonant converters. This paper proposes and analyzes the simultaneous charging of the batteries at equal and unequal magnetizing inductances of the high-frequency transformers (HFTs) operating with dual tank LLC Resonant in a single stage. The Quasi-Z source network (QZSN) was added with an LLC resonant converter named Quasi-Z source resonant converter (QZSRC) to achieve single-stage operation. The First Harmonic Approximation (FHA) method was employed in order to determine the parameters of the dual tank resonant circuit (DTRC) design. The impact of the magnetizing inductance-to-inductance ratio between two HFTs operated in parallel on the shifting of peak magnetizing current ad power-sharing was analyzed. All experiments are carried out at a constant frequency for wide load variations. Design details are discussed, and theoretical and experimental loss calculations are tabulated in detail.
  • Maximum power point tracking techniques for photovoltaic systems-A comprehensive review from real-time implementation perspective
    Smart Grids and Green Energy Systems, 2022

RECENT SCHOLAR PUBLICATIONS

  • Single‐Input Multi‐Isolated‐Output SEPIC‐Ćuk Converter for E‐Bike Charging: Modeling, Design, and Prototype Implementation
    BS Sudarshan, G Arunkumar, G Sridhar, K Mittal
    Energy Storage 7 (4), e70176 , 2025
    2025
    Citations: 1
  • Analysis of Power Managment in a Grid Connected PV System with Energy Storage Device
    SD Sandeep, BS Sudarshan, PS Puhan
    2025 International Conference on Sustainable Energy Technologies and … , 2025
    2025
    Citations: 1
  • Experimental Analysis of Quasi Z Source Resonant Converter at Fixed Frequency Phase Shift Modulation
    SM Hunachal, G Arunkumar, P Srikanth, BS Sudarshan
    2024 IEEE International Conference on Power Electronics, Drives and Energy … , 2024
    2024
  • Experimental Analysis of Power Sharing in a Single-Input-Dual-Output-based Quasi-Z Source Resonant Converter
    H Santoshkumar Mahadev, A Gopal, S Belakavadi Srinath, ...
    2023 11th National Power Electronics Conference (NPEC), 1-6 , 2024
    2024
  • Experimental analysis of power sharing in a single-input-dual-output-based quasi-z source resonant converter
    SM Hunachal, G Arunkumar, BS Sudarshan, PR Shankar
    2023 11th National Power Electronics Conference (NPEC), 1-6 , 2023
    2023
    Citations: 3
  • Power Loss Analysis and Validation of the SEPIC-Ćuk Combined Isolated DC-DC Converter
    BS Sudarshan, G Arunkumar
    2023 Innovations in Power and Advanced Computing Technologies (i-PACT), 1-7 , 2023
    2023
    Citations: 4
  • SiC switch-based isolated DC-DC converter for simultaneous charging of Li-ion batteries of different voltage ratings for low- and medium-power electric vehicle battery charging …
    S B S, A G
    International Journal of Circuit Theory and Applications 51 (11), 5348-5400 , 2023
    2023
    Citations: 12
  • Isolated DC-DC power converters for simultaneous charging of electric vehicle batteries: research review, design, high-frequency transformer testing, power quality concerns …
    SB Sudarshan, G Arunkumar
    Sustainability 15 (3), 2813 , 2023
    2023
    Citations: 24
  • Maximum power point tracking techniques for photovoltaic systems-A comprehensive review from real-time implementation perspective
    BS Sudarshan, A Chitra, WR Sultana, PR Chandrasekhar, T Ganguli, ...
    Smart Grids and Green Energy Systems, 159-196 , 2022
    2022
    Citations: 3
  • REACTIVE POWER COMPENSATION AND VOLTAGE-STABILIZATION FOR WIND POWER IN A WEAK DISTRIBUTION NETWORK
    H Anantwar, S B S, S T R, VS Gurung, AL Chakravarthy
    International Journal of Electrical and Electronics Engineering 2 (3) , 2014
    2014

MOST CITED SCHOLAR PUBLICATIONS

  • Isolated DC-DC power converters for simultaneous charging of electric vehicle batteries: research review, design, high-frequency transformer testing, power quality concerns …
    SB Sudarshan, G Arunkumar
    Sustainability 15 (3), 2813 , 2023
    2023
    Citations: 24
  • SiC switch-based isolated DC-DC converter for simultaneous charging of Li-ion batteries of different voltage ratings for low- and medium-power electric vehicle battery charging …
    S B S, A G
    International Journal of Circuit Theory and Applications 51 (11), 5348-5400 , 2023
    2023
    Citations: 12
  • Power Loss Analysis and Validation of the SEPIC-Ćuk Combined Isolated DC-DC Converter
    BS Sudarshan, G Arunkumar
    2023 Innovations in Power and Advanced Computing Technologies (i-PACT), 1-7 , 2023
    2023
    Citations: 4
  • Experimental analysis of power sharing in a single-input-dual-output-based quasi-z source resonant converter
    SM Hunachal, G Arunkumar, BS Sudarshan, PR Shankar
    2023 11th National Power Electronics Conference (NPEC), 1-6 , 2023
    2023
    Citations: 3
  • Maximum power point tracking techniques for photovoltaic systems-A comprehensive review from real-time implementation perspective
    BS Sudarshan, A Chitra, WR Sultana, PR Chandrasekhar, T Ganguli, ...
    Smart Grids and Green Energy Systems, 159-196 , 2022
    2022
    Citations: 3
  • Single‐Input Multi‐Isolated‐Output SEPIC‐Ćuk Converter for E‐Bike Charging: Modeling, Design, and Prototype Implementation
    BS Sudarshan, G Arunkumar, G Sridhar, K Mittal
    Energy Storage 7 (4), e70176 , 2025
    2025
    Citations: 1
  • Analysis of Power Managment in a Grid Connected PV System with Energy Storage Device
    SD Sandeep, BS Sudarshan, PS Puhan
    2025 International Conference on Sustainable Energy Technologies and … , 2025
    2025
    Citations: 1
  • Experimental Analysis of Quasi Z Source Resonant Converter at Fixed Frequency Phase Shift Modulation
    SM Hunachal, G Arunkumar, P Srikanth, BS Sudarshan
    2024 IEEE International Conference on Power Electronics, Drives and Energy … , 2024
    2024
  • Experimental Analysis of Power Sharing in a Single-Input-Dual-Output-based Quasi-Z Source Resonant Converter
    H Santoshkumar Mahadev, A Gopal, S Belakavadi Srinath, ...
    2023 11th National Power Electronics Conference (NPEC), 1-6 , 2024
    2024
  • REACTIVE POWER COMPENSATION AND VOLTAGE-STABILIZATION FOR WIND POWER IN A WEAK DISTRIBUTION NETWORK
    H Anantwar, S B S, S T R, VS Gurung, AL Chakravarthy
    International Journal of Electrical and Electronics Engineering 2 (3) , 2014
    2014