Dr RISHAD AHMED's Outputs (5)

On Accelerated Degradation of DC-Link Film Capacitors and Data-based Lifetime Estimation (2024)
Journal Article
Pena-Quintal, A., Mustafa, U., Gerada, C., & Ahmed, M. R. (2024). On Accelerated Degradation of DC-Link Film Capacitors and Data-based Lifetime Estimation. IEEE Access, 12, 177565-177575. https://doi.org/10.1109/access.2024.3474256

Methods to address the lifetime of film capacitors are a new trend, which have come about due to the importance of control algorithms relying on the stability and the reliability of this passive device for controlling ever-increasing power with optim... Read More about On Accelerated Degradation of DC-Link Film Capacitors and Data-based Lifetime Estimation.

On Optimized Modulation Strategies for Electric Vehicle Integrated On-board Chargers (2024)
Journal Article
Kougioulis, I., Zanchetta, P., Wheeler, P., & Ahmed, M. R. (2025). On Optimized Modulation Strategies for Electric Vehicle Integrated On-board Chargers. IEEE Transactions on Industry Applications, 61(1), 714-725. https://doi.org/10.1109/TIA.2024.3463610

Integration of the on-board charger (OBC) and auxiliary power module (APM) in electric vehicles (EVs) can reduce the overall weight, volume and cost of the on-board charging system, as well as increase efficiency. This paper proposes optimized modula... Read More about On Optimized Modulation Strategies for Electric Vehicle Integrated On-board Chargers.

Design Analysis of High-Frequency, High Power 3-Phase DAB Transformer for Electric Vehicle Charger Applications (2024)
Presentation / Conference Contribution
Mustafa, U., Kougioulis, I., Watson, A. J., Wheeler, P., & Ahmed, M. R. (2024, June). Design Analysis of High-Frequency, High Power 3-Phase DAB Transformer for Electric Vehicle Charger Applications. Presented at 2024 IEEE Transportation Electrification Conference and Expo (ITEC), Chicago, IL, USA

The power requirements for onboard chargers in Electric Vehicles are increasing due to the need for increased charging speeds. The 3-Phase Dual Active Bridge (DAB) DC-DC converter is an enabling topology for high-power onboard chargers (22kW). Howeve... Read More about Design Analysis of High-Frequency, High Power 3-Phase DAB Transformer for Electric Vehicle Charger Applications.

Novel converter-dynamic voltage restorer integration to mitigate voltage sags (2024)
Presentation / Conference Contribution
Alwahaibi, S., Wheeler, P., Rivera, M., & Ahmed, R. (2024, June). Novel converter-dynamic voltage restorer integration to mitigate voltage sags. Presented at 13th International Conference on Power Electronics, Machines and Drives (PEMD 2024), Nottingham, England

Voltage sag is common power quality issue that disturb load operation and need attention. The Dynamic Voltage Restorer (DVR) is an effective solution for voltage sags compensation. However, the conventional DVR, consisting of a DC source and an inver... Read More about Novel converter-dynamic voltage restorer integration to mitigate voltage sags.

Analysis and Experimental Evaluation of a Soft Switching Boost Converter with Unbalanced Capacitor Voltage (2024)
Journal Article
Chen, Q., Klumpner, C., Li, Y., & Ahmed, M. R. (2024). Analysis and Experimental Evaluation of a Soft Switching Boost Converter with Unbalanced Capacitor Voltage. IEEE Transactions on Power Electronics, 39(9), 11176 - 11186. https://doi.org/10.1109/TPEL.2024.3404260

This paper presents a novel unbalanced capacitor voltage (UCV) soft switching boost converter under full loads range with a simple control scheme. The topology consists of a half bridge switching-leg, filter inductor, and an auxiliary circuit contain... Read More about Analysis and Experimental Evaluation of a Soft Switching Boost Converter with Unbalanced Capacitor Voltage.