Gautam Rituraj, Ph.D.-Webpage

Education

Indian Institute of Technology Guwahati, India

Doctor of Philosophy [July 2013 - February 2021]

Power Electronics & Electromagnetics

Course Work CGPA: 8.5

Thesis Title: Coupling Efficiency Improvement and Power Transfer Enhancement in Wireless Power Transfer System for Electric Vehicle Charging Applications

Thesis Supervisor: Dr. ing. Praveen Kumar, Professor, Dept. of EEE, IIT Guwahati.

Gautam Buddh Technical University Lucknow, India

Bachelor of Technology [July 2008 - June 2012]

Electrical Engineering

Percentage: 77.78%, First class with Hons.

Thesis Title: Smart Grid Technology based on Wireless Monitoring of Loads and Faults

Work Experience

Postdoctoral Researcher [June 2021 - Present]

DC Systems, Energy conversion & Storage (DCE&S) group , Department of Electrical Sustainable Energy, Technische Universiteit Delft (TU Delft), the Netherlands

Led the activity in 1 national (out of 2) and 1 international (out of 3) projects and worked with 6 industry partners, working in hardware and software solutions.
Developed a customer energy manager (CEM) software in Rust using S2 communication standards to integrate the hybrid energy storage systems.
Collaborated with PhD candidates within the DCE&S group to help them build hardware and simulations.
Published 1 journal, 4 conference papers, 1 IEA research report, and developed CEM software.

Research Fellow [July 2013 - February 2021]

E-Mobility Lab, Department of Electronics and Electrical Engineering (EEE), IIT Guwahati, Assam, India

Led the hardware, analytical, and simulation (ANSYS Maxwell and MATLAB) research on wireless power transfer systems, focusing on electromagnetic simulations for coil design, prototyping, and testing.
Developed prototypes of 1.1 kW WPT coils (with and without ferrites) and high frequency (~ 200 kHz) inverter using Si and SiC devices and used FPGA for their operation.
Collaborated with Design and EEE researchers to advance solar PV home system research and develop WPT analytical models, integrating electrical and computational expertise to optimize performance.
Led end-to-end scientific research activities and knowledge dissemination, driving innovation and contributing to 6 journal publications, 8 conference papers, 1 book chapter, and 1 granted patent.

Research Projects

National Research Project (RVO): Intelligent flexibility through integrated energy storage (FLEXINet) [2023 - Present]

Industry partners worked with: Heliox-PRE Power Developers, Dr Ten, and Summerheat.
- Built a digital twin of Summerheat’s thermal storage system to verify their resource manager (RM) functionality.
- Developed a hybrid energy storage integration software in Rust, known as customer energy manager (CEM), which uses S2 (communication standards for energy flexibility). CEM can handle multiple RMs (PRE, Summerheat, and Dr Ten), store data in a SQL database, and simultaneously exchange information with the Energy Management Algorithm (EMA, in Julia) through API.
- Developed a Rust–Julia API for EMA to connect with CEM and exchange JSON messages.
- Proposed and currently executing the test cases for the system integration.
International Research Project (Horizon 2020): Delivering renewal and innovation to mass vehicle electrification enabled by V2X technologies (Drive2X) [2023 - Present]

Industry partners worked with: PRE Power Developers.
- Implemented an off-grid 3-phase inverter for the unbalanced load for a 10 kW off-grid EV charging system in MATLAB (hardware implementation is in progress in collaboration with PRE and a PhD candidate).
International Research Project (IEA PVPS Task 18): Off-Grid and Edge-of-Grid photovoltaic (PV) systems [2022 - 2024]

Industry partners worked with: Trama TecnoAmbiental (TTA) Spain, Global Sustainable Energy Solutions Pty Ltd Australia, and Ekistica Australia.
- Led the activity and wrote a research report (main author) on the evaluation of software tools for standalone microgrid design and optimization (SMDO).
- Proposed the criteria (quantitative and qualitative) for comparing the software tools that were publically available for SMDO.
- Simulated standalone microgrids in HOMER Pro and compared their results with experimental and iHOGA PRO+ simulation results based on the defined criteria.
National Research Project (Shell): Intelligent power electronics for high power quality of electricity in urban areas with high fraction of renewables (IQ-GRID) [2023]
- Equally contributed in developing digital twin simulation model of electrolyzer systems (using Dual Active Bridge converters) in OPAL-RT and its documentation.
International Research Project (Innovate UK): Hybrid mini-grid [2021 - 2022]
- Reviewed off-grid and hybrid charging systems for EVs in the literature to find current research trends, assumptions, and potential gaps for future research, published in IEEE-OJIES and it was selected as a featured article by the journal Editor-in-Chief.
PhD Thesis: Coupling Efficiency Improvement and Power Transfer Enhancement in Wireless Power Transfer System for Electric Vehicle Charging Applications (key contributions are highlighted below :) [2013 - 2021]
- Built the experimental setup of SP compensated WPT system with the battery as a load (used Si MOSFETs, high-frequency diodes, Litz wire (handmade), polypropylene capacitors, and FPGA board) and derived analytical expression of the optimum operating frequency to achieve the maximum transmission efficiency throughout the load variation in the charging process (CC and CV modes).
- Developed a 3-D analytical model for the conventional rectangular (and square) air-core coils (of any dimensions) to calculate the magnetic field densities, self- and mutual inductance, and coupling (k).
- Invented a novel unipolar coil arrangement method (UCAM) for improving k compared with conventional coils of the same self-inductance and outer dimensions (without flux-guiding materials) in WPT systems (also proposed its analytical model) [Indian patent no. 497323].
- Proposed a new and simple ferrite arrangement of the rectangular (and square) coil structures (conventional and proposed) to minimize the ferrite volume while maintaining the improvement in k obtained from traditional ferrite arrangement.
Collaborative research project with Design Department: A study of design intervention for discrete off-grid PV home system in rural lifestyle context [2017 - 2019]
- Developed a MATLAB simulation model to verify the proposed off-grid PV home system concept.
- Collaboratively developed and tested the hardware setup, fixed the bugs, and verified the proposed concept. Also contributed to its documentation.
Collaborative research project within the EEE Department: Design and analysis of wireless power transfer system for electric vehicle charging [2015 - 2019]
- Developed experimental setup of WPT systems to measure the B-field of the coil (with and without ferrites).
- Performed winding of the coil system to measure the self-and mutual inductances.
- Developed and performed electromagnetic simulations of the 2-D and 3-D models of the WPT coil system in ANSYS.
- Contributed in writing the original draft and revised version of the manuscripts.

Skills

Software

Electromagnetic design and simulation (ANSYS Maxwell)
MATLAB Simulink with real-time microcontroller interface
Altera Quartus II design software (for FPGA)
RT Lab (OPAL-RT)
PCB Design (Eagle), and familiar with Altium and OrCAD-PSpice
HOMER Pro® and iHOGA PRO+ (microgrid design and optimization software)

Documentation (Latex and Microsoft tools)
Visual studio code (for software development)
Web development (HTML)
Programming Language: RUST and Familiar with Python and Julia.

Hardware

Prototype Development

Digital twin (OPAL-RT)

Familiar with hand soldering (for SMD & through-hole components)

PCB fabrication with LPKF PCB machine

Familiar with ATmega328 microcontroller and FPGA (Altera Cyclone II)

Sensor interface and gate driver circuits design, three-phase inverter, high-frequency single-phase inverter, power supply for gate driver circuit, high-frequency inductor, charging coil, contactless battery charging system design, smart solar photovoltaic home system, and PLC.

Professional Activities

Professional Membership

Member, IEEE

[2022 - 2024]

Invited Reviewer of the Journals

IEEE Transactions on Power Electronics
IEEE Transactions on Transportation Electrification
IEEE Transactions on Industrial Electronics
IEEE Transactions on Circuits and Systems-I
IEEE Transactions on Circuits and Systems-II: Express Briefs
IEEE Journal of Emerging and Selected Topics in Power Electronics
IEEE Journal of Emerging and Selected Topics in Industrial Electronics
IEEE Transactions on Microwave Theory and Techniques
IEEE Power Electronics Letters
IEEE Transactions on Smart Grid
IEEE Open Journal of Vehicular Technology
IEEE Open Journal of Industrial Electronics Society
IEEE Open Journal of Power Electronics
IET Electric Power Applications
IET Power Electronics
Journal of Cleaner Production
Frontiers

[2016 - Present]

Teaching Assistantship

EE-381: Electrical Machines Laboratory - Autumn 2014, 2015, 2016, and 2017.
EE-102: Basic Electronics Laboratory - Spring 2015, 2016, 2017, and 2018.
Mentor in Pear Assisted Learning (PAL) program for EE-101: Basic Electrical - Spring 2016 and 2018.

[2014 - 2018]

Extracurricular

Serving as a track chair for the wireless charging topic in track-13 (Battery Chargers: Onboard, Wireless, Fast, & Ultra-Fast) of ITEC-2025, Anaheim, California, USA (IEEE’s premier conference on transportation electrification).
Attended the fifth International PV Systems Summar School (PVSSS) held online between the third and the eighth of July 2022, organized by Delft University of Techonology.
Attended webinar on the topic " Conductive Charging of Electrified Vehicles: Challenges and Opportunities," from Power Electronics And Renewable energies Laboratory (PEARL), Shanghai Tech University; organized by IEEE Transportation Electrification Community, August 2020.
Attended webinar on the topic "Wireless Charging for Autonomous Electrified Micro-mobility Devices: A Real-world Solution for Smart Cities to be Pandemic-ready," from STEER group, ASSET laboratory, Onterio Tech University, Canada; organized by IEEE Transportation Electrification Community, July 2020.
Attended webinar on the topic " Energy Storage and Electric Vehicle Technology," from The Hong Kong Polytechnic University; organized by IEEE Transportation Electrification Community, June 2020.
Attended webinar on the topic "Smart Battery Energy Management and Health Conscious Fast Charging for Future Transport," from STEER group, ASSET laboratory, Onterio Tech University, Canada; organized by IEEE Transportation Electrification Community, June 2020.
Attended webinar on the topic "High Efficiency Wireless Charging of Electric Vehicles," from Department of Electrical and Computer Engineering, San Diego State University; organized by IEEE Transportation Electrification Community, May 2019.
Attended webinar on the topic "120 kW High-Power Wireless Charging System Development," from Oak Ridge National Laboratory; organized by IEEE Transportation Electrification Community, Feb 2019.
Contributed (mainly in the lab experiments) in the Faculty development programme on "Power Electronics" jointly organized by Electronics & ICT Academies and supported by Ministry of Electronics and Information Technology (MeitY), Government of India, held from 11th–20th December, 2017.
Contributed as a member of core committee and Head of Public Relation team in ADVAYA 2015 (PG Cultural fest, IIT Guwahati).
Contributed as a member of Event Management team in ADVAYA 2014 (PG Cultural fest, IIT Guwahati).

Achievements & Awards

Our article (by G. Rituraj, G. R. Chandra Mouli, and P. Bauer) entitled, "A Comprehensive Review on Off-Grid and Hybrid Charging Systems for Electric Vehicles," has been recommended by the Editor-in-Chief of IES IEEE Open Journal of the Industrial Electronics Society as a featured article and promoted in the March 2023 issue of the eNewsletter at IES online publication IE Technology News (ITeN) website.
Received the SRISTI-GYTI APPRECIATION 2021 for one of the PhD works titled "A Unipolar Coil Arrangement Method for Improving the Coupling Coefficient without Ferrite Material in Wireless Power Transfer Systems" on 23 June 2022.
Received best model award for model competition in the RESEARCH CONCLAVE 2016, organized by Students’ Academic Board, IIT Guwahati.
Implementation of existing cycle into hybrid-cycle (electric+paddle) first time (April 2016) in the institute and it is working fine since then.
An article related to a work titled "Wireless charging system for Electric Vehicles: Analysis & Design" was published in Autocar Professional Magazine, April 2016 issue .
A prototype on "Wireless charging system for EVs" was selected for exhibition in MAKE IN INDIA WEEK 2016 held at Mumbai.
GATE scholarship by Ministry of HRD, Government of India for PhD: July 2013-18.
Received first prize in model presentation (Smart Grid Technology) in Techfest RECKON 2011, organized by M.M. Agrawal group of Institutions.
Successfully completed one month training in the field of "Manufacturing Process of Insulator and Ceralin Bends" during June 22 to July 21, 2011 at BHEL Jagdishpur.
Received first prize in skits competition (participated in a group), in National Techfest, Arunima 2011, organized by BSACET Mathura.
Placed among the top 10% in Part A of the Physics Olympiad Examination 2005-06 (class XII level) in district level.

Publications

Patent (01)

G. Rituraj and P. Kumar, "Unipolar coil arrangement method for improving the coupling factor and reducing the electromagnetic emissions in wireless power transfer systems and a coil thereof," Indian Patent Application 201931003386, filed on 28 Jan 2019, published on 01 Mar 2019, granted on 10 Jan 2024, patent number 497323 (support provided by Patent Information Centre - ASTEC Guwahati - Assam).

Journals (08)

R. S. Deshmukh, G. Rituraj, P. Bauer, and H. Vahedi "Real-time digital twin implementation of power electronics-based hydrogen production system,'' in Energy Reports, vol. 13, pp. 5006-5015, ISSN 2352-4847, June 2025.
G. Rituraj, G. R. Chandra Mouli, and P. Bauer, "A Comprehensive Review on Off-Grid and Hybrid Charging Systems for Electric Vehicles,'' in IEEE Open Journal of the Industrial Electronics Society, vol. 3, pp. 203-222, April 2022.
G. Rituraj and P. Kumar, "A New Magnetic Structure of Unipolar Rectangular Coils in WPT Systems to Minimize the Ferrite Volume while Maintaining Maximum Coupling,” in IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 68, no. 6, pp. 2072-2076, June 2021.
B. K. Kushwaha, G. Rituraj, and P. Kumar, "A Subdomain Analytical Model of Coil System with Magnetic Shields of Finite Dimensions and Finite Permeability for Wireless Power Transfer Systems," in IEEE Transactions on Magnetics, vol. 56, no. 12, pp. 1-11, December 2020.
G. Rituraj, B. K. Kushwaha, and P. Kumar, "A Unipolar Coil Arrangement Method for Improving the Coupling Coefficient without Ferrite Material in Wireless Power Transfer Systems,'' in IEEE Transactions on Transportation Electrification, vol. 6, no. 2, pp. 497-509, June 2020.
B. K. Kushwaha, G. Rituraj, P. Kumar, and P. Bauer, "Mathematical Model for the Analysis of Series-Parallel Compensated Wireless Power Transfer System for Different Misalignments,'' in IET Circuits, Devices & Systems, vol. 13, no. 7, pp. 970-978, October 2019.
G. Rituraj, B. K. Kushwaha, and P. Kumar, "Contactless Power Transfer System for Sealed Lead Acid Battery Charging," in Wireless Power Transfer, Cambridge University Press, vol. 5, no. 1, pp. 20–26, March 2018.
B. K. Kushwaha, G. Rituraj, and P. Kumar, " 3-D Analytical Model for Computation of Mutual Inductance for Different Misalignments With Shielding in Wireless Power Transfer System," in IEEE Transactions on Transportation Electrification, vol. 3, no. 2, pp. 332-342, June 2017.

Research Report (01)

G. Rituraj, J. Oritz, N. Ficarelli, G. R. Chandra Mouli, P. Rodden, C. Martell, X. Vallve, and P. Bauer Evaluation of Software Tools for Standalone Microgrid Design and Optimization, International Energy Agency, pp. 1-72, ISBN(electronic) 978-3-907281-45-1, March 2024.

Chapter (01)

B. Dhiman, G. Rituraj, M. K. Chaudhury, D. Chakrabarti (2019) Design Optimization Tool for Development of Solar Photovoltaic System in Rural Household Context. In: Chakrabarti A. (eds) Research into Design for a Connected World. Smart Innovation, Systems and Technologies, vol 134. Springer, Singapore.

Conferences (12)

R. S. Deshmukh, G. Rituraj, H. Vahedi, A. Shekhar, and P. Bauer, "Impact of Electrolyzer on the Operation of a Dual Active Bridge Converter", IECON 2023 - 49th Annual Conference of the IEEE Industrial Electronics Society, Singapore, 2023, pp. 1-6.
R. S. Deshmukh, G. Rituraj, N. Lock, H. Vahedi, A. Shekhar, and P. Bauer, "Implementation of Real-Time Digital Twin of Dual Active Bridge Converter in Electrolyzer Applications", IECON 2023 - 49th Annual Conference of the IEEE Industrial Electronics Society, Singapore, 2023, pp. 1-6.
A. Shekhar, G. Rituraj, R. v. d. Sande, M. Ahmadi, R. S. Deshmukh, P. Bauer, V. Nougain, A. Leki', and P. Palensky, "Development of Reliable Power Electronic Systems using Real Time Digital Twin Based Power Hardware-in-the-Loop Testbed", in 2023 IEEE Belgrade PowerTech, Belgrade, Serbia, 2023, pp. 1-6.
G. Rituraj, N. Ficarelli, G. R. Chandra Mouli, C. Martell, X. Vallve, P. Rodden, and P. Bauer, "Evaluation of Standalone Microgrid Design Software Tools Based on the Defined Criteria", in 4th International Conference on Solar Technologies and Hybrid Mini-Grids to improve energy access , Palma (Mallorca), 26th to 28th April 2023 [presented the accepted abstract at UIB].
B. Dhiman, T. Kumar, G. Rituraj, K. Bhalla, and D. Chakrabarti "Study of small scale photovoltaic applications in rural Indian household context," CISBAT 2019 (Switzerland), Journal of Physics: Conference Series, 1343, 012095.
G. Rituraj, B. K. Kushwaha, and P. Kumar "3-D analytical modeling of magnetic field for air core rectangular coil in contactless power transfer system," IECON 2016 - 42nd Annual Conference of the IEEE Industrial Electronics Society, Florence, 2016, pp. 4459-4464.
B. K. Kushwaha, G. Rituraj, P. Kumar, and P. Bauer "Mathematical model of series-parallel compensation for contactless power transfer system," 2016 IEEE International Power Electronics and Motion Control Conference (PEMC), Varna, 2016, pp. 1020-1025.
E. R. Joy, B. K. Kushwaha, G. Rituraj, and P. Kumar "Analysis and comparison of four compensation topologies of contactless power transfer system," 2015 4th International Conference on Electric Power and Energy Conversion Systems (EPECS), Sharjah, 2015, pp. 1-6.
B. K. Kushwaha, G. Rituraj, and P. Kumar "Mathematical model of series-series compensation for contactless power transfer system," IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society, Yokohama, 2015, pp. 001321-001326.
B. K. Kushwaha, G. Rituraj and P. Kumar "Modeling and analysis of inductively coupled power transfer system," 2015 IEEE International Transportation Electrification Conference (ITEC), Chennai, 2015, pp. 1-4.
E. R. Joy, B. K. Kushwaha, G. Rituraj, and P. Kumar "Impact of circuit parameters in contactless power transfer system," 2014 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), Mumbai, 2014, pp. 1-6.
G. Rituraj, E. R. Joy, B. K. Kushwaha, and P. Kumar "Analysis and comparison of series-series and series-parallel topology of contactless power transfer systems," TENCON 2014 - 2014 IEEE Region 10 Conference, Bangkok, 2014, pp. 1-6.