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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.

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.

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.

Novel Parameter Identification Method for Lithium-Ion Batteries Based on Curve Fitting (2020)
Conference Proceeding
Lukic, M., Giangrande, P., Klumpner, C., & Galea, M. (2020). Novel Parameter Identification Method for Lithium-Ion Batteries Based on Curve Fitting. In 2020 IEEE Vehicle Power and Propulsion Conference (VPPC). https://doi.org/10.1109/vppc49601.2020.9330955

This paper describes a new curve-fitting lithium-ion battery parameter identification method for equivalent circuit models. The current pulse/relaxation test is carried out and the corresponding terminal voltage is used for extracting the battery mod... Read More about Novel Parameter Identification Method for Lithium-Ion Batteries Based on Curve Fitting.

Integrating a Single Z-Source Network with a Modular Multilevel Converter for Voltage Boosting (2019)
Conference Proceeding
Khera, F. A., Wheeler, P. W., & Klumpner, C. (2019). Integrating a Single Z-Source Network with a Modular Multilevel Converter for Voltage Boosting

This paper proposes the integration of a Z-source network with the modular multilevel converter (MMC) to add voltage boosting capability to a voltage step down converter. To limit the increase in complexity, the proposed Z-source modular multilevel c... Read More about Integrating a Single Z-Source Network with a Modular Multilevel Converter for Voltage Boosting.

Analysis of Energy Storage System Requirements for Aircraft Electric Taxiing Operations (2019)
Conference Proceeding
Lukic, M., Giangrande, P., Klumpner, C., & Galea, M. (2019). Analysis of Energy Storage System Requirements for Aircraft Electric Taxiing Operations. . https://doi.org/10.1109/IECON.2019.8926797

This paper focuses on evaluating the energy and power requirements of a specific aircraft on-board electric taxiing (ET) system. The developed model of the investigated system is used to determine the requisites for a typical taxiing profile mission... Read More about Analysis of Energy Storage System Requirements for Aircraft Electric Taxiing Operations.

An Exploration of Design Options for Integrated Residential PV-ESS (2019)
Conference Proceeding
Panagiotou, K., Klumpner, C., Sumner, M., & Georghiou, G. E. (2019). An Exploration of Design Options for Integrated Residential PV-ESS. In Proceedings: IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society (4721-4726). https://doi.org/10.1109/IECON.2019.8927217

The behind-the-meter integration of the distributed energy sources and the energy storage systems (ESSs) presents one of the key solutions for the 21st century energy and power challenges. A comprehensive design and development procedure, which integ... Read More about An Exploration of Design Options for Integrated Residential PV-ESS.

Modelling and Analysis of an Aircraft On-board Electric Taxiing System (2019)
Conference Proceeding
Lukic, M., Giangrande, P., Klumpner, C., & Galea, M. (2019). Modelling and Analysis of an Aircraft On-board Electric Taxiing System. In Proceedings of 2019 22nd International Conference on Electrical Machines and Systems (ICEMS) (1-6). https://doi.org/10.1109/ICEMS.2019.8921709

This paper presents a model that enables analysis and design validation of an aircraft on-board electric taxiing system. A detailed model, which includes power electronics, electrical machine and mechanical drivetrain, is first developed and discusse... Read More about Modelling and Analysis of an Aircraft On-board Electric Taxiing System.

Design Considerations to Optimise Supercapacitor-based Energy Storage Systems for Aerospace Applications (2018)
Conference Proceeding
Fares, A., Klumpner, C., & Rashed, M. (2018). Design Considerations to Optimise Supercapacitor-based Energy Storage Systems for Aerospace Applications. In 2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC) (1-8). https://doi.org/10.1109/ESARS-ITEC.2018.8607796

© 2018 IEEE. This paper investigates the design optimization of a supercapacitor-based energy storage system for aerospace applications which may be needed to complement the operation of a high power pulsed load such as electromechanical actuators ha... Read More about Design Considerations to Optimise Supercapacitor-based Energy Storage Systems for Aerospace Applications.

Design and Evaluation of a Power Converter for an Energy Storage System for Aircrafts (2018)
Conference Proceeding
Klumpner, C., & Rashed, M. (2018). Design and Evaluation of a Power Converter for an Energy Storage System for Aircrafts. In Proceedings - 2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC) (1-8). https://doi.org/10.1109/ESARS-ITEC.2018.8607274

This paper presents the design and evaluation of a power converter to be used in an energy storage system for aircrafts that is be able to control the 270V dc bus voltage during large load disturbances and regeneration. A study is conducted in order... Read More about Design and Evaluation of a Power Converter for an Energy Storage System for Aircrafts.

State of the Art of Electric Taxiing Systems (2018)
Conference Proceeding
Lukic, M., Hebala, A., Giangrande, P., Klumpner, C., Nuzzo, S., Chen, G., …Galea, M. (2018). State of the Art of Electric Taxiing Systems. In Proceedings - 2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC) (1-6). https://doi.org/10.1109/ESARS-ITEC.2018.8607786

The aviation industry represents an ever-expanding economy and the aircraft market forecast reveals an optimistic growth for the coming decades. New requirements and guidelines call for a more efficient, reliable, and environment friendly aircraft op... Read More about State of the Art of Electric Taxiing Systems.

Power Density Optimization of a DC/DC Converter for an Aircraft Supercapacitors Energy Storage (2018)
Conference Proceeding
Fritz, N., Rashed, M., & Klumpner, C. (2018). Power Density Optimization of a DC/DC Converter for an Aircraft Supercapacitors Energy Storage. In 2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC) (1-9). https://doi.org/10.1109/ESARS-ITEC.2018.8607774

This paper presents a computationally efficient design algorithm for a DC/DC converter, optimized for power density. Interleaving and series-connecting of several converter cells is included in the analysis. The choice of the converter design paramet... Read More about Power Density Optimization of a DC/DC Converter for an Aircraft Supercapacitors Energy Storage.

New modulation scheme for bidirectional quasi z-source modular multilevel converters (2018)
Conference Proceeding
Khera, F., Klumpner, C., & Wheeler, P. (2018). New modulation scheme for bidirectional quasi z-source modular multilevel converters.

This paper proposes a dedicated modulation scheme for a bidirectional quasi Z-source modular multilevel converter (BqZS-MMC). The operation principle and a suitable PWM method are proposed. The relation between the modulation index and shoot-through... Read More about New modulation scheme for bidirectional quasi z-source modular multilevel converters.

Sizing guidelines for grid-connected decentralised energy storage systems: single house application (2018)
Conference Proceeding
Panagiotou, K., Klumpner, C., & Sumner, M. (2018). Sizing guidelines for grid-connected decentralised energy storage systems: single house application.

Nowadays, the existing hierarchical, centrally controlled power grid faces new challenges due to the increase penetration of renewable sources, the need of implementing demand side management and the 2020 and 2050 environmental targets. A promising c... Read More about Sizing guidelines for grid-connected decentralised energy storage systems: single house application.

Design and evaluation of an energy storage system for helicopters (2018)
Conference Proceeding
Klumpner, C., & Rashed, M. (2018). Design and evaluation of an energy storage system for helicopters.

This paper presents the design and evaluation of an energy storage system (ESS) for helicopters with the aim to recover the kinetic energy in the rotor available after landing and to be able to control the 270V dc bus voltage during load disturbances... Read More about Design and evaluation of an energy storage system for helicopters.

Optimising the structure of a cascaded modular battery system for enhancing the performance of battery packs (2018)
Conference Proceeding
Fares, A., Klumpner, C., & Sumner, M. (2018). Optimising the structure of a cascaded modular battery system for enhancing the performance of battery packs.

The overall performance of battery packs may be affected by imbalances between the series connected cells which is more likely in packs with high number of cells needed to provide a high voltage as needed for example in electric vehicles. In this cas... Read More about Optimising the structure of a cascaded modular battery system for enhancing the performance of battery packs.

Operation principles of quasi Z-source modular multilevel converters (2018)
Conference Proceeding
Khera, F. A., Klumpner, C., & Wheeler, P. W. (2018). Operation principles of quasi Z-source modular multilevel converters. In Proceedings 2017 IEEE Southern Power Electronics Conference (SPEC) (1-6). https://doi.org/10.1109/SPEC.2017.8333617

This paper proposes the integration of a quasi Z-source network with a modular multilevel converter (MMC) to provide voltage boost capability. The proposed quasi-Z-source MMC uses two symmetrical networks of inductors and capacitors connected between... Read More about Operation principles of quasi Z-source modular multilevel converters.

Design recommendations for energy systems: a UK energy community study (2017)
Conference Proceeding
Panagiotou, K., Klumpner, C., Sumner, M., & Wheeler, P. (in press). Design recommendations for energy systems: a UK energy community study.

One of the key elements towards a decentralised energy sector is the consumers’ choice and participation, as the concept of energy prosumer is gaining more and more ground and energy community projects are spouting across UK. In order for the upcomin... Read More about Design recommendations for energy systems: a UK energy community study.