Electromagnetic Design Engineer

Motiur Reza Mohammed

+ Abu Dhabi, UAE # ****.******@*****.*** +971-********* Khalifa University ð LinkedIn Google Scholar Electromagnetic Design Engineer Electrical Machines, Transformer Design, Analytical, FEA, and High-Voltage Systems

Electrical Engineer with Ph.D.-level specialization and 7+ years of postdoctoral research experience in electromagnetic design, finite-element analysis, electric machines, power electronics, and high-voltage systems. Strong background in magnetic-field analysis, flux distribution, core saturation, loss evaluation, insulation-related high-voltage testing, and design optimization using ANSYS Maxwell, MATLAB/Simulink, and PLECS. Experienced in electric machine design, converter hardware, EV charging systems, high-voltage switching, pulsed-power generators, laboratory prototyping, troubleshooting, and experimental validation. Brings transferable expertise to power-transformer engineering, including magnetic-circuit analysis, winding and field-distribution understanding, efficiency-focused design, high-voltage awareness, technical documentation, and cross-functional engineering collaboration. Professional Experience

Postdoctoral Research Fellow, Khalifa University – Abu Dhabi, UAE Apr 2019 – Present

• Developed, analysed, and tested high-gain, bidirectional, common-ground, and multiport DC–DC converter topologies for EVs, fuel-cell systems, renewable-energy interfaces, and electrified transportation applications.

• Investigated switching resonance, voltage oscillations, semiconductor-device stress, current ripple, electromagnetic interference, and power-quality issues in switched-inductor and switched-capacitor converter networks, and implemented topology-level improvements.

• Designed and experimentally validated EV charging converter concepts, including single-phase on-board and off-board chargers, integrated charging systems using motor windings and inverter hardware, and bidirectional charging architectures.

• Developed high-voltage power-electronic switching systems, including single-gate-driven series-connected semiconductor switches, voltage-balancing techniques, advanced gate-driver circuits, high-voltage switch design, and power-electronics-based pulsed-power generators.

• Designed, modelled, and optimized high-performance asymmetrical PMSM machines for EV traction. Conducted electric-machine design trade studies involving topology selection, material utilization, geometric optimization, electromagnetic loading, torque quality, efficiency, power density, and manufacturability.

• Supported motor-drive system integration through modelling, simulation, and control of inverter-fed PMSM and induction-machine drives using field-oriented control, direct torque control, and closed-loop drive-control strategies.

• Developed mathematical models and simulation frameworks for electromechanical systems, power converters, EV charging systems, motor drives, and high-voltage switching circuits using MATLAB/Simulink, PLECS, ANSYS Maxwell.

• Designed and validated closed-loop control strategies for voltage regulation, converter control, and motor-drive applications.

• Conducted hardware prototyping, experimental testing, troubleshooting, and data-driven performance refinement using dSPACE, OPAL-RT, TI C2000, Altium Designer, KiCad, and laboratory measurement platforms.

• Led and co-authored IEEE Transactions papers, conference publications, patent applications, research proposals, technical reports, and experimental studies on power electronics converters and machine design. Education

Indian Institute of Technology (IIT), Varanasi, India 2013 – 2018 Ph.D. in Electrical Engineering Specialization: Electrical Machine Analysis and Design College of Engineering Pune (CoEP), Pune, India 2010 – 2012 M.Tech. in Electrical Engineering Specialization: Control Systems SASTRA University, Thanjavur, India 2005 – 2009

B.Tech. in Electrical & Electronics Engineering

Technical Skills

Electromagnetic Analysis: ANSYS Maxwell, ANSYS Multiphysics, Analytical Electromagnetic Modelling, Finite-Element Analysis, Electromagnetic Field Analysis.

Electric Machines: PMSM, IPM, Axial-flux Machines, Linear Induction Motors, Linear PMSM, Dual-Stator & Dual-Rotor PMSM, Skewed-Magnet Topologies.

Power Electronics & EV Charging: High-gain DC–DC converters, Bidirectional Converters, Fuel-Cell Converters, EV Chargers, DAB Converters, AC–AC Converters, Multiport Converters, Gate Driver Design. Modelling & Simulation: MATLAB, Simulink, PLECS, LTspice, System Identification. Motor Drives & Control: FOC, DTC, Inverter-fed Machine Analysis, Drive-Cycle Oriented Design, Stability Analysis. Hardware / Real-Time Platforms: Altium Designer, KiCad, OPAL-RT, TI C2000, dSPACE. Programming & Documentation: MATLAB, Python, C, C++, FORTRAN, LaTeX Selected Projects

Linear Induction Motor for Railway Traction and Adhesion Control Electric Machines / Traction

• Led electromagnetic design and analysis of a linear induction motor for railway traction and adhesion control under magnetic saturation conditions.

• Investigated entry/end effects, edge effects, and saturation-induced field distortion using analytical methods and finite-element simulations.

• Developed compensating winding approaches to mitigate longitudinal end effects and improve field distribution and traction performance.

• Evaluated propulsion force characteristics and machine behaviour relevant to high-load traction environments. Linear Tubular Permanent-Magnet Actuator Actuation / FEA

• Designed a linear tubular permanent-magnet actuator and performed electromagnetic analysis for force production and field quality.

• Studied entry/exit effects, demagnetization risk, harmonic content, and force ripple.

• Applied magnet-shaping methods to reduce ripple and improve smooth force output.

• Built analytical and FEA models for geometry comparison and design optimization. Asymmetric Permanent-Magnet Motor Design for EV Propulsion EV Propulsion

• Performed electromagnetic design and analysis of permanent-magnet and asymmetric machine topologies for electric vehicle propulsion.

• Evaluated air-gap flux density, back-EMF, torque ripple, cogging torque, and losses using ANSYS Maxwell and JMAG.

• Investigated geometry and topology changes to improve torque quality, efficiency, and traction-oriented performance. Power-Electronics-Based 100 kV Pulsed-Power Generator for Cable Insulation Testing Pulsed Power / High Voltage

• Developed a power-electronics-based 100 kV pulsed-power generator for cable insulation and dielectric withstand testing applications.

• Designed high-voltage switching stages using single-gate-driven series-connected semiconductor switches, including voltage-balancing, gate-driver isolation, snubber design, and device-protection considerations.

• Built simulation models and supported prototype-oriented validation of switching performance, device stress, insulation coordination, waveform quality, and high-voltage test reliability. High- Voltage Gain DC–DC Converter for EV and Fuel-Cell Applications Power Electronics / EV

• Designed and analyzed high-gain DC–DC converter topologies for EV and fuel-cell power interfaces.

• Evaluated voltage gain, device stress, current ripple, and conversion efficiency using MATLAB/Simulink, PLECS, and hardware-oriented analysis.

• Investigated voltage oscillation and resonance mechanisms in switched-inductor converter networks and implemented improvements for stable operation.

• Supported electrified powertrain integration by aligning converter performance with wide input-voltage operation and reduced source-current ripple requirements.

EV Charger Development and Motor-Winding-Based Power Transfer EV Charging

• Contributed to the design and experimental validation of single-phase on-board and off-board EV charger topologies for high-efficiency charging applications.

• Investigated power-transfer concepts using motor windings and inverter-based architectures for integrated charging functionality in electric vehicles.

• Evaluated converter operation with emphasis on efficiency, power quality, current ripple reduction, and safe high-power operation.

• Supported prototype-oriented development through simulation, laboratory testing, and performance verification. Advanced Permanent-Magnet Machine Topologies PM Machines

• Investigated axial-flux, dual-stator dual-rotor, and skewed-magnet permanent-magnet machines for high torque density and reduced cogging torque.

• Developed semi-analytical methods for skew modelling, slot-shift optimization, and cogging-torque reduction in permanent-magnet machines.

Power Transformer Design and Material Selection Power Transformer

• Analytical and FEA-based power-transformer design studies aligned with required voltage regulation, operating duty, loss minimisation, and all-day efficiency objectives.

• Evaluated winding-section, core-section, and insulation-system choices, including conductor sizing, current density, winding arrangement, leakage reactance, core material, flux-density optimisation. Power Transformer Fault Identification from Dissolved Gas Data Condition Monitoring

• Applied data-driven diagnostic methods for identifying incipient power-transformer faults from dissolved gas analysis

(DGA) data.

• Used feature-selection concepts, including Recursive Feature Elimination, to identify the most informative gas features for fault classification and asset-health assessment.

• Connected diagnostic outputs with condition-based maintenance decisions and root-cause investigation of power-transformer assets.

Patents

• Balanthi Abdul R. Beig, Motiur Reza Mohammed, Khalifa Hassan Al Hosani, and Khaled Al Jaafari, “Bidirectional DC–DC Converter,” U.S. Patent US 12,640,651 B2, issued May 26, 2026.

• B. N. Chaudhari, G. Priyanka, and Motiur Reza Mohammed, “Double Stator Double Rotor Permanent Magnet Synchronous Machine with Claw Pole Arrangement for Inner Rotor,” Application No. 209/MUM/2014 A. Selected Publications

Selected Journal Articles

• M. R. Mohammed, V. Khadkikar, B. Zahawi and O. Alzaabi, "Hybrid ASL-SC Converter with High Gain and Near Zero Input Current Ripple for Fuel Cell Vehicles," in IEEE Transactions on Power Electronics, doi: 10.1109/TPEL.2026.3703778.

• S. Kumar, A. Kumar, M. Reza and F. Blaabjerg, "A Common-Grounded D2 -Based High-Gain Converter With Zero Current Ripple Cell and Reduced Device Stress," in IEEE Journal of Emerging and Selected Topics in Industrial Electronics, doi: 10.1109/JESTIE.2026.3698823.

• M. R. Mohammed, A. S. Al-Sumaiti, and A. R. Beig, “Hybrid active switched inductor DC–DC converter with common ground and suppressed voltage oscillation for fuel cell vehicles,” IEEE Transactions on Transportation Electrification, vol. 11, no. 1, pp. 3204–3214, 2025. DOI: 10.1109/TTE.2024.3434710.

• M. R. Mohammed, V. Khadkikar, B. Zahawi, and O. Alzaabi, “Improved triple-switch triple mode DC–DC converter with suppressed voltage oscillations,” IEEE Transactions on Power Electronics, vol. 39, no. 10, pp. 13442–13455, 2024. DOI: 10.1109/TPEL.2024.3430552.

• M. R. Mohammed, A. S. Al-Sumaiti, A. R. Beig, K. Al Hosani, and C. Wang, “A common grounded voltage quadrupler ASL/PSC hybrid converter with reduced voltage stress,” IEEE Transactions on Industrial Electronics, vol. 71, no. 5, pp. 4773–4784, 2024. DOI: 10.1109/TIE.2023.3285980.

• M. Reza, K. Avneet, and X. Pan, “A low stress, high voltage, switched capacitor and active switched inductor DC– DC converter,” International Journal of Circuit Theory and Applications, vol. 53, no. 4, pp. 1975–1999, 2024. DOI: 10.1002/cta.4190.

• A. Kumar, S. Kumar, X. Pan, M. R. Mohammed, and D. Bao, “A common grounded non-isolated ASISC high gain DC–DC converter with oscillation mitigation across switches,” IEEE Journal of Emerging and Selected Topics in Industrial Electronics, pp. 1–9, 2023. DOI: 10.1109/JESTIE.2024.3485174.

• A. Ahmad, M. R. Reza, A. R. Beig, J. Y. Alsawalhi, and K. A. Jaafari, “High voltage gain switched-Z-source bidirectional DC–DC converter,” IEEE Access, vol. 10, pp. 53560–53577, 2022. DOI: 10.1109/ACCESS.2022.3175874.

• A. Kumar, X. Xiong, X. Pan, M. Reza, A. R. Beig, and K. A. Jaafari, “A wide voltage gain bidirectional DC–DC converter based on quasi Z-source and switched capacitor network,” IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 68, no. 4, pp. 1353–1357, 2021. DOI: 10.1109/TCSII.2020.3033048.

• M. Reza et al., “High gain quasi-switched boost inverter with optimal performance parameters,” IEEE Transactions on Transportation Electrification, vol. 6, no. 2, pp. 554–567, 2020. DOI: 10.1109/TTE.2020.2984159.

• A. Kumar, M. Raghuram, S. K. Singh, X. Xiong, and M. Reza, “Analysis and control of enhanced switched boost inverters for wide duty cycle operation,” IEEE Access, vol. 7, pp. 45427–45439, 2019. DOI: 10.1109/ACCESS.2019.2908972.

• A. Kumar, Y. Wang, X. Pan, X. Xiong, M. Reza, and K. Al Jaafari, “Modified A-source converter operating at lower voltage stress,” IEEE Access, vol. 7, pp. 179670–179678, 2019. DOI: 10.1109/ACCESS.2019.2958373.

• P. Kumar, M. R. Motiur, and R. K. Srivastava, “Analytical method for calculation of cogging torque reduction due to slot shifting in a dual stator dual rotor permanent magnet machine with semi-closed slots,” Progress In Electromagnetics Research M, vol. 70, pp. 99–108, 2018.

• M.M. Reza and R. K. Srivastava, “Cogging reduction in permanent magnet machines via skewed slot opening and its analytical modeling,” Progress In Electromagnetics Research M, vol. 70, pp. 167–176, 2018.

• M. M. Reza and R. K. Srivastava, “Semi-analytical model for skewed magnet axial flux machine,” Progress In Electromag- netics Research M, vol. 68, pp. 109–117, 2018.

• A. K. Chauhan, V. R. Vakacharla, M. M. Reza, M. Raghuram, and S. K. Singh, “Modified boost derived hybrid converter: Redemption using FCM,” IEEE Transactions on Industry Applications, vol. 53, no. 6, pp. 5893–5904, 2017. Selected Conference Proceedings and Other Publications

• M. R. Mohammed, V. Khadkikar, B. Zahawi, and O. Alzaabi, “Dual duty triple mode active switched inductors DC–DC converter with reduced switch voltage stress,” in 2025 IEEE North-East India International Energy Conversion Conference and Exhibition (NE-IECCE), 2025, pp. 1–6. DOI: 10.1109/NE-IECCE64154.2025.11183450.

• Q. Guanqun, K. Vinod, B. Zahawi, and M. R. Mohammed, “A novel multifunctional on-board charger for 800 V electric vehicles,” in 2025 IEEE International Conference on Sustainable Energy and Future Electric Transportation, 2024, pp. 1–5.

• M. R. Mohammed, V. Khadkikar, B. Zahawi, and O. Alzaabi, “Symmetrical ASL hybrid DC–DC converter with low voltage stress,” in 2024 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), 2024, pp. 1–6. DOI: 10.1109/PEDES61459.2024.10961820.

• Q. Guanqun, K. Vinod, M. R. Mohammed, and B. Zahawi, “Power transfer from 400 V charging piles to 800 V electric vehicles using motor winding and inverter,” in 2024 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), 2023, pp. 1–5. DOI: 10.1109/PEDES61459.2024.10961770.

• A. Kumar, M. R. Reza, A. Singh, S. K. Singh, and R. K. Behera, “A wide voltage gain active switched inductor and passive switched capacitor DC–DC converter with very low voltage stress,” in 2023 IEEE 3rd International Conference on Smart Technologies for Power, Energy and Control (STPEC), 2023, pp. 1–6.

• M. R. Mohammed, M. A. Haleem, A. Dekka, D. Ronanki, and A. R. Beig, “A novel high step-up voltage gain DC–DC converter with low source current ripple,” 2022.

• M. Raghuram et al., “SVM based multilevel Z-source matrix converter with reduced power devices,” 2020. DOI: 10.1049/icp.2021.1131.

• M. Reza, A. Verma, and R. Srivastava, “Semi-analytical model for skewed magnet axial flux machine,” 2018. DOI: 10.1109/IAS.2018.8544690.

• P. Kumar, M. Reza, and R. K. Srivastava, “Effect of cogging torque minimization techniques on performance of an axial flux permanent magnet machine,” 2017. DOI: 10.1109/ITEC-India.2017.8356963.

• M. Reza, A. Ahmad, P. Kumar, and R. K. Srivastava, “Semi-analytical model for triangular skewed permanent magnet axial flux machine,” 2017. DOI: 10.1109/ITEC-India.2017.8333843.

• A. K. Chauhan, M. M. Reza, M. Raghuram, and S. K. Singh, “High gain buck-boost matrix converter,” 2016. DOI: 10.1109/PEDES.2016.7914331.

• P. Kumar, M. R. Reza, and R. K. Srivastava, “Effect of relative phase-shift of magnetic field axes on armature reaction and performance of hybrid permanent magnet induction machine,” 2016. DOI: 10.1109/PEDES.2016.7914460.

• P. Kumar, M. R. Reza, and R. K. Srivastava, “Performance analysis and comparison of dual-rotor hybrid permanent magnet induction machine topologies for electric vehicle application,” 2016. DOI: 10.1109/PEDES.2016.7914403.

• M. M. Reza, A. K. Chauhan, S. Mahendra, and R. Srivastava, “No load magnetic field prediction of double-sided linear permanent magnet machines,” 2016. DOI: 10.1109/PEDES.2016.7914306.

• M. Reza, A. K. Chauhan, S. Mahendra, and R. Srivastava, “No-load magnetic field analysis of double-sided linear tubular permanent magnet synchronous machine,” 2016. DOI: 10.1109/PEDES.2016.7914296.

• V. R. Vakacharla, A. K. Chauhan, M. M. Reza, and S. K. Singh, “Boost derived hybrid converter: Problem analysis and solution,” 2016.

• M. Reza, P. Bastawade, A. Pramanik, and B. Chaudhari, “Magnetic field analysis of linear tubular permanent magnet machine,” 2014. DOI: 10.1109/RAECS.2014.6799552.

• P. Bastawade, M. M. Reza, A. Pramanik, and B. N. Chaudhari, “No-load magnetic field analysis of double stator double rotor radial flux permanent magnet generator for low power wind turbines,” 2012. DOI: 10.1109/PEDES.2012.6484410.

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