Gautam Rituraj, Ph.D.

Alumni of E-Mobility Lab, Department of EEE, IIT Guwahati-781039, Assam, India.

g.rituraj@alumni.iitg.ac.in, gautamrtrj91@gmail.com

I am a Postdoctoral Researcher at Technische Universiteit Delft, Netherlands, in DC systems, Energy Conversion and Storage group. Before joining TU Delft, I finished my PhD degree at the Electronics and Electrical Engineering (EEE) Department, IIT Guwahati, India. Here, I worked on various approaches to maximising the transmission efficiency and power transfer capability of the wireless power transfer (WPT) system for EV charging applications, which are well documented in my PhD thesis.

My current research interests include the design and analysis of off-grid EV chargers (plug-in) and standalone microgrid design. It also includes analysing and designing the wireless charging coils and developing the power electronic circuits in the WPT system for charging EVs. Besides that, it consists of the design and development of a smart solar home system with multiple charging strategies for rural areas in India.

Work Experience

Technische Universiteit Delft (TU Delft), Netherlands

Postdoctoral Researcher (June 2021 - present)

On-going and completed projects:

S2 implementation for the communication between the resource manager of various hardwares and customer energy mangaer (CEM) in a hybrid energy storage systems (in FLEXINet project) [in progress]
Digital twin of electrolyzer systems (part of IQ-GRID project by Shell) [in progress]
Implementation of an off-grid 3-phase inverter for the unbalanced load for a 10 kW off-grid EV charging systems (in collaboration with PRE Power Developers, part of Drive2X project) [in progress]
Comparison of standalone microgrid design software tools based on the definied criteira (leading this activity of IEA PVPS Task-18 project) [completed-2023]
A Review of Off-Grid and Hybrid Charging Systems for Electric Vehicles (funded by Innovate U.K. and TU Delft) [completed-2022]

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.

Other projects (collaborative):

Design and Analysis of Wireless Power Transfer System for Electric Vehicle Charging (2015 - 2019)
A Study of Design Intervention for Discrete Off-Grid Photovoltaic Home System in Rural Lifestyle Context (2017 - 2019)

Gautam Buddh Technical University Lucknow, India

Bachelor of Technology (July 2008 - June 2012)

Electrical Engineering

Percentage: 77.78%, First class with Hons.

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

Skills

Software

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

Documentation (Latex and Microsoft tools)
Web development (HTML)

Hardware

Prototype Development

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, and smart solar photovoltaic home system.

Professional Activities

Professional Memberships

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 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
IET Electric Power Applications
IET Power Electronics
Energies
Frontiers

since 2016

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

Awards & Achievements

Scholarship

GATE scholarship by Ministry of HRD, Government of India for PhD: July 2013-18.

In academics

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.
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.
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.
Placed among the top 10% in Part A of the Physics Olympiad Examination 2005-06 (class XII level) in district level.

In extracurricular activities

Attended webinar on the topic " Conductive Charging of Electrified Vehicles: Challenges and Opportunities," from Power Electronics And Renewable energies Laboratory (PEARL), ShanghaiTech 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.
Implementation of existing cycle into hybrid-cycle (electric+paddle) first time (April,2016) in the institute and it is working fine since then.
Worked as a member of core committee and Head of Public Relation team in ADVAYA 2015 (PG Cultural fest, IIT Guwahati).
Worked as a member of Event Management team in ADVAYA 2014 (PG Cultural fest, IIT Guwahati).
Received first prize in skits competition (participated in a group), in National Techfest, Arunima 2011, organized by BSACET Mathura.
Received first prize in model presentation (Smart Grid Technology) in Techfest RECKON 2011, organized by M.M. Agrawal group of Institutions.

Publications

Patent

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

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.

Chapter

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

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.