All Outputs (61)

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.

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.

An Optimisation Tool for Hybrid-Electric Aircraft Propulsion Systems (2023)
Presentation / Conference Contribution
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.

Minimizing the Energy Storage Size in a Full Solar EV Charging Station by Optimising the Size and Orientation of PV Panel Group Sets (2022)
Presentation / Conference Contribution
Putera, P., Klumpner, C., & Wheeler, P. (2022). Minimizing the Energy Storage Size in a Full Solar EV Charging Station by Optimising the Size and Orientation of PV Panel Group Sets. In 2022 IEEE 1st Industrial Electronics Society Annual On-Line Conference (ONCON) (372-377). https://doi.org/10.1109/oncon56984.2022.10127056

Analysis of Using a Thermoelectric Module for Power Electronics Cooling (2022)
Presentation / Conference Contribution
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)
Presentation / Conference Contribution
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.

Evaluation of inverter topologies for high power medium voltage aircraft applications (2020)
Presentation / Conference Contribution
Klumpner, C., & Khera, F. (2020, December). Evaluation of inverter topologies for high power medium voltage aircraft applications. Paper presented at 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020), Online

Future generation more electric aircrafts will require significantly larger power do be generated on board and for this reason, being able to identify which high power/medium voltage AC/DC power converter topologies would suit the best,is important.... Read More about Evaluation of inverter topologies for high power medium voltage aircraft applications.

Quasi Z-Source Hybrid Modular Multilevel Converter Controlled By Reduced Inserted Cells Modulation Technique For Medium Voltage Applications (2020)
Presentation / Conference Contribution
Khera, F., Klumpner, C., & Wheeler, P. (2020, December). Quasi Z-Source Hybrid Modular Multilevel Converter Controlled By Reduced Inserted Cells Modulation Technique For Medium Voltage Applications. Paper presented at 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020), Online

This paper presents a novel quasi Z-source Hybrid modular multilevel converter (qZS-HMMC) for medium voltage applications where the “hybrid” concept refers to the implementation of the MMC strings that consist of a mixture of half bridge sub-modules... Read More about Quasi Z-Source Hybrid Modular Multilevel Converter Controlled By Reduced Inserted Cells Modulation Technique For Medium Voltage Applications.

Analysing the converter requirements for a dual-fed induction machine based flywheel energy storage system (2020)
Presentation / Conference Contribution
Klumpner, C. (2020, December). Analysing the converter requirements for a dual-fed induction machine based flywheel energy storage system. Paper presented at 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020), Online

The Dual-fed Induction Machine was used very successfully in wind generators as it allowed full control of the power captured from the wind within a wide relevant rotational speed range around the synchronous speed needing only a low power rated roto... Read More about Analysing the converter requirements for a dual-fed induction machine based flywheel energy storage system.

Integrating a Single Z-Source Network with a Modular Multilevel Converter for Voltage Boosting (2019)
Presentation / Conference Contribution
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.

Experimental Validation of a quasi Z-Source Modular Multilevel Converter with DC Fault Blocking Capability (2019)
Journal Article
Khera, F., Klumpner, C., & Wheeler, P. (2021). Experimental Validation of a quasi Z-Source Modular Multilevel Converter with DC Fault Blocking Capability. IEEE Journal of Emerging and Selected Topics in Power Electronics, 9(2), 1951-1965. https://doi.org/10.1109/jestpe.2019.2955859

This paper considers the design methodology and the modulation of the quasi Z-source modular multilevel converter (qZS-MMC) with half bridge sub-modules and evaluates its performance in voltage boosting mode for medium voltage applications. The qZS-M... Read More about Experimental Validation of a quasi Z-Source Modular Multilevel Converter with DC Fault Blocking Capability.

An Exploration of Design Options for Integrated Residential PV-ESS (2019)
Presentation / Conference Contribution
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.

Design and evaluation of an energy storage system for helicopters (2019)
Presentation / Conference Contribution
Klumpner, C., & Rashed, M. (2018, April). Design and evaluation of an energy storage system for helicopters. Presented at 9th International Conference on Power Electronics, Machines and Drives (PEMD 2018), Liverpool

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 270 V DC bus voltage during load disturbance... Read More about Design and evaluation of an energy storage system for helicopters.

Sizing guidelines for grid-connected decentralised energy storage systems: single house application (2019)
Journal Article
Panagiotou, K., Klumpner, C., & Sumner, M. (2019). Sizing guidelines for grid-connected decentralised energy storage systems: single house application. Journal of Engineering, 2019(17), 3802-3806. https://doi.org/10.1049/joe.2018.8155

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.

New modulation scheme for bidirectional qZS modular multi-level converters (2019)
Journal Article
Khera, F. A., Klumpner, C., & Wheeler, P. W. (2019). New modulation scheme for bidirectional qZS modular multi-level converters. Journal of Engineering, 2019(17), 3836-3841. https://doi.org/10.1049/joe.2018.8020

This study proposes a dedicated modulation scheme for a bidirectional quasi-Z-source (qZS) modular multi-level converter. The operation principle and a suitable pulse-width modulation method are proposed. The relation between the modulation index and... Read More about New modulation scheme for bidirectional qZS modular multi-level converters.

Design and Evaluation of a Power Converter for an Energy Storage System for Aircrafts (2018)
Presentation / Conference Contribution
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.