Dr RISHAD AHMED's Outputs (5)

An Unbalanced Capacitor Voltage Buck Converter With Wide Soft Switching Range (2023)
Journal Article
Chen, Q., Klumpner, C., & Ahmed, M. R. (2023). An Unbalanced Capacitor Voltage Buck Converter With Wide Soft Switching Range. IEEE Transactions on Industrial Electronics, 71(8), 8703-8713. https://doi.org/10.1109/tie.2023.3314856

DC–DC converters using soft switching technology have gained popularity in several industrial applications. Nevertheless, a wider soft switching range and a simpler structure are the holy grail for these converters. In this article, an innovative unb... Read More about An Unbalanced Capacitor Voltage Buck Converter With Wide Soft Switching Range.

Estimation of Leakage Inductance in High-frequency Three-Winding Transformers for Electric Vehicle On-board Chargers (2023)
Presentation / Conference Contribution
Kougioulis, I., Vannini, A., Pal, A., Wheeler, P., & Ahmed, M. R. (2023, September). Estimation of Leakage Inductance in High-frequency Three-Winding Transformers for Electric Vehicle On-board Chargers. Presented at 25th European Conference on Power Electronics and Applications: EPE’23 ECCE Europe, Aalborg, Denmark

This paper reviews several methods to estimate the equivalent circuit model parameters of high-frequency three-winding transformers, considering measurement accuracy and tolerance to measurement errors. First, several equivalent circuit models of the... Read More about Estimation of Leakage Inductance in High-frequency Three-Winding Transformers for Electric Vehicle On-board Chargers.

Impact of Grid Unbalances on Electric Vehicle Chargers (2023)
Journal Article
Alwahaibi, S., Wheeler, P., Rivera, M., & Ahmed, M. R. (2023). Impact of Grid Unbalances on Electric Vehicle Chargers. Energies, 16(17), Article 6201. https://doi.org/10.3390/en16176201

There is a global trend to reduce emissions from cars through the adoption of other alternatives, such as electric vehicles (EVs). The increasing popularity of EVs has led to a growing demand for electric vehicle chargers. EV chargers are essential f... Read More about Impact of Grid Unbalances on Electric Vehicle Chargers.

An Isolated Multiport DC–DC Converter for Integrated Electric Vehicle On-Board Charger (2023)
Journal Article
Kougioulis, I., Pal, A., Wheeler, P., & Ahmed, M. R. (2023). An Isolated Multiport DC–DC Converter for Integrated Electric Vehicle On-Board Charger. IEEE Journal of Emerging and Selected Topics in Power Electronics, 11(4), 4178-4198. https://doi.org/10.1109/jestpe.2023.3276048

This paper proposes an integrated on-board charger (IOBC) for Electric Vehicles (EVs) based on an isolated three-port DC-DC converter. The proposed architecture integrates the on-board charger (OBC) and the auxiliary power module (APM) in a single mu... Read More about An Isolated Multiport DC–DC Converter for Integrated Electric Vehicle On-Board Charger.

An Optimisation Tool for Hybrid-Electric Aircraft Propulsion Systems (2023)
Presentation / Conference Contribution
Walmsley, R., Ahmed, R., Klumpner, C., & Saleh, B. M. (2023, May). An Optimisation Tool for Hybrid-Electric Aircraft Propulsion Systems. Presented at IEEE International Electric Machines & Drives Conference (IEMDC 2023), San Francisco, CA, USA

The requirement for reductions in CO 2 , NO X and noise emissions from aviation have come under great assiduity. The use of electric and hybrid-electric propulsion systems within aircraft offer potential performance and efficiency improvements, throu... Read More about An Optimisation Tool for Hybrid-Electric Aircraft Propulsion Systems.