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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, 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.

An Optimisation Tool for Hybrid-Electric Aircraft Propulsion Systems (2023)
Conference Proceeding
Walmsley, R., Ahmed, R., Klumpner, C., & Saleh, B. M. (2023). An Optimisation Tool for Hybrid-Electric Aircraft Propulsion Systems. In 2023 IEEE International Electric Machines & Drives Conference (IEMDC). https://doi.org/10.1109/iemdc55163.2023.10238919

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.

Sliding Mode Input Current Control of the Synchronous DC-DC Buck Converter for Electro-Mechanical Actuator Emulation in More Electric Aircrafts (2022)
Journal Article
Salimi, M., Klumpner, C., & Bozhko, S. (2022). Sliding Mode Input Current Control of the Synchronous DC-DC Buck Converter for Electro-Mechanical Actuator Emulation in More Electric Aircrafts. Energies, 15(24), Article 9628. https://doi.org/10.3390/en15249628

The main challenges of the input current control in synchronous DC-DC buck converters are the nonlinear model of the system, changes of the operating point in a wide range, and the need to use an input LC filter for current smoothing, which may resul... Read More about Sliding Mode Input Current Control of the Synchronous DC-DC Buck Converter for Electro-Mechanical Actuator Emulation in More Electric Aircrafts.

Analysis of Using a Thermoelectric Module for Power Electronics Cooling (2022)
Conference Proceeding
Abubakar, A., Klumpner, C., & Wheeler, P. (2022). Analysis of Using a Thermoelectric Module for Power Electronics Cooling. In 2022 IEEE 1st Industrial Electronics Society Annual On-Line Conference (ONCON) (909-914). https://doi.org/10.1109/oncon56984.2022.10126992

This paper aims to develop a PLECS equivalent circuit of a thermoelectric module to be used in power electronics cooling applications. The proposed model is built using elements from the PLECS thermal model block-set. To test this, a resistive c dev... Read More about Analysis of Using a Thermoelectric Module for Power Electronics Cooling.

A Novel Multiport DC-DC Converter for Enhancing the Design and Performance of Battery–Supercapacitor Hybrid Energy Storage Systems for Unmanned Aerial Vehicles (2022)
Journal Article
Fares, A. M., Klumpner, C., & Sumner, M. (2022). A Novel Multiport DC-DC Converter for Enhancing the Design and Performance of Battery–Supercapacitor Hybrid Energy Storage Systems for Unmanned Aerial Vehicles. Applied Sciences, 12(6), Article 2767. https://doi.org/10.3390/app12062767

This paper proposes an integrated multiport non-isolated DC–DC converter system for integrating battery–supercapacitor hybrid energy storage with photovoltaics for solar-powered unmanned aerial vehicles applications. Compared to the traditional topol... Read More about A Novel Multiport DC-DC Converter for Enhancing the Design and Performance of Battery–Supercapacitor Hybrid Energy Storage Systems for Unmanned Aerial Vehicles.

Development of a smart supercapacitor energy storage system for aircraft electric power systems (2021)
Journal Article
Fares, A. M., Kippke, M., Rashed, M., Klumpner, C., & Bozhko, S. (2021). Development of a smart supercapacitor energy storage system for aircraft electric power systems. Energies, 14(23), Article 8056. https://doi.org/10.3390/en14238056

This paper presents the development of a supercapacitor energy storage system (ESS) aimed to minimize weight, which is very important for aerospace applications, whilst integrating smart functionalities like voltage monitoring, equalization, and over... Read More about Development of a smart supercapacitor energy storage system for aircraft electric power systems.

Modeling and experimental evaluation of z-source modular multilevel converter using reduced inserted cells technique (2021)
Journal Article
Khera, F. A., Klumpner, C., & Wheeler, P. (2021). Modeling and experimental evaluation of z-source modular multilevel converter using reduced inserted cells technique. IEEE Access, 9, 133091-133101. https://doi.org/10.1109/ACCESS.2021.3115634

The integration of a Z-source network with a modular multilevel converter (MMC) to provide voltage step-up function is proposed in this paper. The proposed Z-source modular multilevel converter (ZS-MMC) uses a Z-source network connected between the D... Read More about Modeling and experimental evaluation of z-source modular multilevel converter using reduced inserted cells technique.

Comparison of Frequency Transform Methods for Condition Monitoring of a DC-Link Capacitor (2021)
Conference Proceeding
Raqib, A., Jahanger, H., Sumner, M., Cox, T., Klumpner, C., Agha, I., …Lonsdale, P. (2021). Comparison of Frequency Transform Methods for Condition Monitoring of a DC-Link Capacitor. In 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020) (621 – 626). https://doi.org/10.1049/icp.2021.1169

Electrolytic capacitors continue to be used for the DC-link in motor drive systems due to their high specific capacitance. The degradation of electrolytic capacitors can lead to increased equivalent series resistances (ESR) and reduction in capacitan... Read More about Comparison of Frequency Transform Methods for Condition Monitoring of a DC-Link Capacitor.

Trade-off Analysis of Energy Storage Systems for Helicopter Landing Gear Electromechanical Actuator (2021)
Conference Proceeding
Lukic, M., Giangrande, P., Klumpner, C., & Galea, M. (2021). Trade-off Analysis of Energy Storage Systems for Helicopter Landing Gear Electromechanical Actuator. . https://doi.org/10.1109/ISIE45552.2021.9576403

The aerospace industry is rapidly changing towards more electric aircraft initiative, trying to alleviate pollution problems and obey the authority bodies' strict rules. Not only should aircraft comply with this initiative but also helicopters (i.e.,... Read More about Trade-off Analysis of Energy Storage Systems for Helicopter Landing Gear Electromechanical Actuator.