Outputs (13)

An Interleaved Soft-Switching Bidirectional Converter for EV Application (2025)
Journal Article
Chen, Q., Li, Y., Klumpner, C., & Ahmed, R. (2025). An Interleaved Soft-Switching Bidirectional Converter for EV Application. IEEE Transactions on Power Electronics, https://doi.org/10.1109/TPEL.2025.3595650

This article presents an interleaved unbalanced capacitor voltage bidirectional soft-switching DC-DC converter to achieve a wide soft-switching range and high power density for EV applications. In the proposed circuit, an auxiliary circuit comprising... Read More about An Interleaved Soft-Switching Bidirectional Converter for EV Application.

Optimization of MMX relative quasi-satellite transfer trajectories using primer vector theory (2024)
Journal Article
Pushparaj, N., Baresi, N., & Kawakatsu, Y. (2024). Optimization of MMX relative quasi-satellite transfer trajectories using primer vector theory. Acta Astronautica, 225, 390-401. https://doi.org/10.1016/j.actaastro.2024.09.031

Quasi-satellite orbits (QSO) are stable retrograde parking orbits around Phobos that are currently being considered for JAXA’s upcoming robotic sample return mission Maritan Moons Exploration (MMX). During the proximity operations o... Read More about Optimization of MMX relative quasi-satellite transfer trajectories using primer vector theory.

Non-reacting Numerical Simulation of Axisymmetric Trapped Vortex Combustor (2023)
Presentation / Conference Contribution
DAKKA, S., Singh, K., Jefferson-Loveday, R., & Serhat, H. (2023, December). Non-reacting Numerical Simulation of Axisymmetric Trapped Vortex Combustor. Presented at ICAAAE 2023: 17. International Conference on Aeronautical and Aerospace Engineering, London

This paper will focus on suitability of trapped vortex combustor as a candidate for gas turbine combustor objective to minimize pressure drop across combustor and investigating aerodynamic performance. Non-reacting simulation of axisymmetric cavity t... Read More about Non-reacting Numerical Simulation of Axisymmetric Trapped Vortex Combustor.

A multi-vector community energy system integrating a heating network, electricity grid and PV production to manage an electrified community (2022)
Journal Article
Han, M. E., Alston, M., & Gillott, M. (2022). A multi-vector community energy system integrating a heating network, electricity grid and PV production to manage an electrified community. Energy and Buildings, 266, Article 112105. https://doi.org/10.1016/j.enbuild.2022.112105

Electrification in energy supply–demand plays a critical role in domestic heating and road transport, delivering an electrified community to reduce carbon emissions. This solution, however, places a significant power demand increase on the distributi... Read More about A multi-vector community energy system integrating a heating network, electricity grid and PV production to manage an electrified community.

Numerical Analysis of Aerospike Engine Nozzle Performance at Various Truncation Lengths (2021)
Journal Article
Dakka, S., & Dennison, O. (2021). Numerical Analysis of Aerospike Engine Nozzle Performance at Various Truncation Lengths. International Journal of Aviation, Aeronautics, and Aerospace, 8(2), Article 12. https://doi.org/10.15394/ijaaa.2021.1601

The aerospike engine was first devised in the early 1960s where it provided new means of reaching orbit in a single stage. The paper aimes to demonstrate the viability of the technology by showcasing the increased nozzle thrust efficiency over the co... Read More about Numerical Analysis of Aerospike Engine Nozzle Performance at Various Truncation Lengths.

Voltage Oriented Controller based Vienna Rectifier for Electric Vehicle Charging Stations (2021)
Journal Article
Rajendran, G., Vaithilingam, C. A., Misron, N., Naidu, K., & Ahmed, M. R. (2021). Voltage Oriented Controller based Vienna Rectifier for Electric Vehicle Charging Stations. IEEE Access, 9, 50798-50809. https://doi.org/10.1109/ACCESS.2021.3068653

Vienna rectifiers have gained popularity in recent years for AC to DC power conversion for many industrial applications such as welding power supplies, data centers, telecommunication power sources, aircraft systems, and electric vehicle charging sta... Read More about Voltage Oriented Controller based Vienna Rectifier for Electric Vehicle Charging Stations.

Performance Characteristics Design of Pulsed Plasma Thrusters for Drag Counter-Reacting (2020)
Journal Article
Dakka, S. (2020). Performance Characteristics Design of Pulsed Plasma Thrusters for Drag Counter-Reacting. International Journal of Aviation, Aeronautics, and Aerospace, 7(4), Article 1. https://doi.org/10.15394/ijaaa.2020.1530

Determining the performance characteristics of off the shelf pulsed plasma thrusters to enhance the life time of low earth orbiting platforms was investigated theoretically. Pulsed plasma thruster analysis was accomplished through development of corr... Read More about Performance Characteristics Design of Pulsed Plasma Thrusters for Drag Counter-Reacting.

Investigation the Stability of Water in Oil Biofuel Emulsions Using Sunflower Oil (2020)
Journal Article
Sahota, R., & Dakka, S. M. (2020). Investigation the Stability of Water in Oil Biofuel Emulsions Using Sunflower Oil. ChemEngineering, 4(2), Article 36. https://doi.org/10.3390/chemengineering4020036

Targets to reduce CO2 emissions by 75% and NOx emissions by 90% by 2050 in aviation have been set by The Advisory Council for Aviation Research and Innovation in Europe. Sustainable fuels, e.g., emulsified biofuel, have demonstrated promise in reduci... Read More about Investigation the Stability of Water in Oil Biofuel Emulsions Using Sunflower Oil.

Ionic and Electronic Conduction in TiNb2O7 (2019)
Journal Article
Grey, C. P., Griffith, K. J., Seymour, I. D., Hope, M. A., Butala, M. M., Lamontagne, L. K., Preefer, M. B., Koçer, C. P., Henkelman, G., Morris, A. J., Cliffe, M. J., & Dutton, S. E. (2019). Ionic and Electronic Conduction in TiNb2O7. Journal of the American Chemical Society, 141(42), 16706–16725. https://doi.org/10.1021/jacs.9b06669

TiNb2O7 is a Wadsley–Roth phase with a crystallographic shear structure and is a promising candidate for high-rate lithium ion energy storage. The fundamental aspects of the lithium insertion mechanism and conduction in TiNb2O7, however, are not well... Read More about Ionic and Electronic Conduction in TiNb2O7.

Air-Cooling of a Hollow High-Speed Permanent Magnet Rotor (2019)
Presentation / Conference Contribution
Connor, P. H., La Rocca, A., Xu, Z., Degano, M., Eastwick, C. N., Pickering, S. J., & Gerada, C. (2019, May). Air-Cooling of a Hollow High-Speed Permanent Magnet Rotor. Presented at 2019 IEEE International Electric Machines and Drives Conference, IEMDC 2019, San Diego, USA

This paper presents a computational fluid dynamics conjugate heat transfer analysis of internal and external cooling paths for a hollow high-speed permanent magnet rotor. Extracting magnet losses from high-speed permanent magnet rotors is challenging... Read More about Air-Cooling of a Hollow High-Speed Permanent Magnet Rotor.

Anion-binding-induced electrochemical signal transduction in ferrocenylimidazolium: combined electrochemical experimental and theoretical investigation (2019)
Journal Article
Weng, T.-Q., Huang, Y.-F., Xue, L.-S., Cheng, J., Jin, S., Liu, S.-H., Wu, D.-Y., & Chen, G. Z. (2019). Anion-binding-induced electrochemical signal transduction in ferrocenylimidazolium: combined electrochemical experimental and theoretical investigation. Molecules, 24(2), Article 238. https://doi.org/10.3390/molecules24020238

Five ferrocene alkymethylimidazolium cations 1a–1d and 2 with different alkyl spacer lengths were reinvestigated using voltammetry and density functional theory (DFT) calculations. The voltammetric responses of ligand 2 toward various anions are desc... Read More about Anion-binding-induced electrochemical signal transduction in ferrocenylimidazolium: combined electrochemical experimental and theoretical investigation.

Cross-linked Ni(OH)₂/CuCo₂S₄/Ni networks as binder-free electrodes for high performance supercapatteries (2018)
Journal Article
Tang, N., You, H., Li, M., Chen, G. Z., & Zhang, L. (2018). Cross-linked Ni(OH)₂/CuCo₂S₄/Ni networks as binder-free electrodes for high performance supercapatteries. Nanoscale, 10(44), 20526-20532. https://doi.org/10.1039/c8nr05662e

The heterogeneous Ni(OH)2/CuCo2S4/Ni electrode is constructed by appropriately adjusting the time-dependent hydrothermal and electrodeposition process. A hybrid device exhibits 39.7 W h kg-1 of specific energy and 365.3 W kg-1 of specific power, with... Read More about Cross-linked Ni(OH)₂/CuCo₂S₄/Ni networks as binder-free electrodes for high performance supercapatteries.

Titanium carbide nanocube core induced interfacial growth of crystalline polypyrrole/polyvinyl alcohol lamellar shell for wide-temperature range supercapacitors (2014)
Journal Article
Weng, Y.-T., Pan, H.-A., Wu, N.-L., & Chen, G. Z. (2015). Titanium carbide nanocube core induced interfacial growth of crystalline polypyrrole/polyvinyl alcohol lamellar shell for wide-temperature range supercapacitors. Journal of Power Sources, 274, 1118-1125. https://doi.org/10.1016/j.jpowsour.2014.10.158

This is the first investigation on electrically conducting polymers–based supercapacitor electrodes over a wide temperature range, from −18 °C to 60 °C. A high-performance supercapacitor electrode material consisting of TiC nanocube core and conforma... Read More about Titanium carbide nanocube core induced interfacial growth of crystalline polypyrrole/polyvinyl alcohol lamellar shell for wide-temperature range supercapacitors.