Professor DAVID GERADA's Outputs (138)

Advancements in Electrical Machines for Aircraft Propulsion (2025)
Journal Article
Gerada, D., Zhang, F., Jiang, J., Zhang, X., Zou, T., Xu, Z., & Gerada, C. (2025). Advancements in Electrical Machines for Aircraft Propulsion. IEEJ Journal of Industry Applications, https://doi.org/10.1541/ieejjia.24010320

Electrical machines are at the center of future aircraft propulsion architectures, and their improvement is key in increasing the market uptake of cleaner transport. This paper investigates recent/ongoing improvements within the constituent technolog... Read More about Advancements in Electrical Machines for Aircraft Propulsion.

Optimization and Comparison of 1MW-Class PM Motors for Aircraft Propulsion Using Litz Wire and Hairpin Windings (2025)
Journal Article
Huynh, A. T., Huang, H., Jiang, J., Zou, T., Gerada, D., Yang, T., & Gerada, C. (2025). Optimization and Comparison of 1MW-Class PM Motors for Aircraft Propulsion Using Litz Wire and Hairpin Windings. IEEE Transactions on Magnetics, https://doi.org/10.1109/tmag.2025.3547237

Choosing the right winding technology is key to maximizing power density and efficiency in electric aircraft propulsion. This paper presents a two-level optimization strategy to evaluate Litz wire and hairpin winding configurations in two 1 MW-class... Read More about Optimization and Comparison of 1MW-Class PM Motors for Aircraft Propulsion Using Litz Wire and Hairpin Windings.

Comprehensive Investigation of Thermal and Mechanical Loads on Stator Winding Insulation in Non-salient Synchronous Generator under RISC fault (2025)
Journal Article
Sun, K., He, Y.-L., Chen, H.-C., Wu, X.-W., Yang, J.-W., Tang, G., Zhang, F., & Gerada, D. (2025). Comprehensive Investigation of Thermal and Mechanical Loads on Stator Winding Insulation in Non-salient Synchronous Generator under RISC fault. IEEE Transactions on Instrumentation and Measurement, 74, Article 1502017. https://doi.org/10.1109/tim.2025.3542101

Current studies on frequent rotor interturn short circuits (RISC) primarily focus on fault diagnosis. However, the detrimental effect of RISC on the fragile stator winding insulation of synchronous generators is overlooked. Consequently, this article... Read More about Comprehensive Investigation of Thermal and Mechanical Loads on Stator Winding Insulation in Non-salient Synchronous Generator under RISC fault.

PDIV Modeling for Rectangular Wire Turn-to-Turn Insulation of Inverter-Fed Motors at Different Cruising Altitudes (2024)
Presentation / Conference Contribution
Naderiallaf, H., Gerada, C., Degano, M., & Gerada, D. (2024, September). PDIV Modeling for Rectangular Wire Turn-to-Turn Insulation of Inverter-Fed Motors at Different Cruising Altitudes. Presented at 2024 International Conference on Electrical Machines (ICEM), Torino, Italy

This study develops a predictive model for partial discharge inception voltage (PDIV) in turn-to-turn insulation of form-wound windings for inverter-fed motors considering a range of altitudes, from ground to cruise levels. Emphasis is placed on the... Read More about PDIV Modeling for Rectangular Wire Turn-to-Turn Insulation of Inverter-Fed Motors at Different Cruising Altitudes.

Design Strategies for Scalable and Modular Aerospace Electrical Machines (2024)
Presentation / Conference Contribution
Darmani, M. A., Murataliyev, M., Gerada, D., & Gerada, C. (2024, September). Design Strategies for Scalable and Modular Aerospace Electrical Machines. Presented at 2024 International Conference on Electrical Machines (ICEM), Torino, Italy

In his study, innovative design approaches for scalable and modular inverter-fed electrical machines, tailored for aerospace applications, are explored with the primary goal of achieving unparalleled power density within powertrain systems. Three dis... Read More about Design Strategies for Scalable and Modular Aerospace Electrical Machines.

Design Optimization of Spoke-type Flux-intensifying PM Motor with Asymmetric Rotor Configuration for Improved Performance (2024)
Journal Article
Hsieh, M.-F., Huynh, A. T., Do, V.-V., Gerada, D., & Gerada, C. (2024). Design Optimization of Spoke-type Flux-intensifying PM Motor with Asymmetric Rotor Configuration for Improved Performance. IEEE Transactions on Magnetics, 60(9), Article 8203905. https://doi.org/10.1109/tmag.2024.3428416

This article explores enhancing spoke-type flux-intensifying permanent magnet (SFI-PM) motor performance by strategically placing flux barriers (FBs) in the asymmetric rotor. Integrating multi-FBs into the conventional spoke-type PM (CSPM) rotor topo... Read More about Design Optimization of Spoke-type Flux-intensifying PM Motor with Asymmetric Rotor Configuration for Improved Performance.

Mechanical properties and insulation damage of PMSG stator end windings with eccentricity considerations (2024)
Journal Article
Dai, D. R., He, Y. L., Xu, M. X., Zhang, W., Fu, Z. X., & Gerada, D. (2024). Mechanical properties and insulation damage of PMSG stator end windings with eccentricity considerations. Alexandria Engineering Journal, 105, 156-169. https://doi.org/10.1016/j.aej.2024.06.090

The mechanical properties and insulation damage of stator end windings in permanent magnet synchronous generator (PMSG) are investigated by theoretical analysis, finite element analysis (FEA) and experiment verification. First, a theoretical model of... Read More about Mechanical properties and insulation damage of PMSG stator end windings with eccentricity considerations.

Investigation on the torsional property of hybrid composite/metal shafts at different service temperatures: Experimental and analytical study (2024)
Journal Article
Qi, W., Xu, Z., Wan, Y., Gerada, D., & Gerada, C. (2024). Investigation on the torsional property of hybrid composite/metal shafts at different service temperatures: Experimental and analytical study. Polymer Composites, 45(12), 11266-11275. https://doi.org/10.1002/pc.28564

Torsional tests were conducted to investigate the influence of service temperature on torsional property of composite/steel hybrid structures. In the experiment, two types of lightweight hybrid composite‐metal shafts were tested at both room temperat... Read More about Investigation on the torsional property of hybrid composite/metal shafts at different service temperatures: Experimental and analytical study.

PM Synchronous Motor with an Integrated Common-Mode Voltage Filter Considering Parasitic Capacitance Distribution (2024)
Presentation / Conference Contribution
Zhang, J., Zhang, X., Gu, C., Li, J., Ji, Y., Wang, H., Zhao, H., & Gerada, D. (2024, May). PM Synchronous Motor with an Integrated Common-Mode Voltage Filter Considering Parasitic Capacitance Distribution. Presented at 7th IEEE International Electrical and Energy Conference (CIEEC 2024), Harbin, China

The common-mode voltage (CMV) arises from the simultaneous imbalance in the three-phase voltage output of the inverter. It is coupled with parasitic capacitance within the machine structure, which is related to the physical structure of the machine.... Read More about PM Synchronous Motor with an Integrated Common-Mode Voltage Filter Considering Parasitic Capacitance Distribution.

A Review of Carbon Emissions from Electrical Machine Materials (2024)
Journal Article
Zhang, X., Gerada, D., Xu, Z., Zhang, F., & Gerada, C. (2024). A Review of Carbon Emissions from Electrical Machine Materials. Electronics, 13(9), Article 1714. https://doi.org/10.3390/electronics13091714

As the world embarks on a global mission to tackle climate change, reducing carbon represents a key challenge given the escalating global warming. The U.K. is among many other nations that are determined to decarbonise all sectors and strive to achie... Read More about A Review of Carbon Emissions from Electrical Machine Materials.

Analysis of Proximity Loss of Electrical Machines Using Mesh-Based Magnetic Equivalent Circuit (2024)
Journal Article
Yuan, Y., Ahmadi Darmani, M., Bao, Y., Zhang, X., Gerada, D., & Zhang, H. (2024). Analysis of Proximity Loss of Electrical Machines Using Mesh-Based Magnetic Equivalent Circuit. IEEE Transactions on Transportation Electrification, 10(4), 9467-9477. https://doi.org/10.1109/TTE.2024.3383845

In high power density machines, proximity loss presents an unavoidable obstacle due to its significant impact on thermal dissipation and insulation aging. To address the need for rapid and accurate proximity loss prediction, this study presents a nov... Read More about Analysis of Proximity Loss of Electrical Machines Using Mesh-Based Magnetic Equivalent Circuit.

Fillet Radius Impact of Rectangular Insulated Wires on PDIV for Turn-to-Turn Insulation of Inverter-Fed Motors (2024)
Journal Article
Naderiallaf, H., Degano, M., Gerada, C., & Gerada, D. (2024). Fillet Radius Impact of Rectangular Insulated Wires on PDIV for Turn-to-Turn Insulation of Inverter-Fed Motors. IEEE Transactions on Dielectrics and Electrical Insulation, 31(4), 2084-2093. https://doi.org/10.1109/tdei.2024.3355032

This contribution elucidates the impact of the fillet radius, a geometric feature of rectangular insulated wires not commonly considered, on the partial discharge inception voltage (PDIV) in low-voltage machine turn-to-turn winding insulation. Initia... Read More about Fillet Radius Impact of Rectangular Insulated Wires on PDIV for Turn-to-Turn Insulation of Inverter-Fed Motors.

Accurate FEA Modeling Approach for Calculating AC Copper Loss for Random Windings (2023)
Presentation / Conference Contribution
Dave, N., Gerada, D., Langlois, P., Lawton, A., Patel, R., & Gerada, C. (2023, November). Accurate FEA Modeling Approach for Calculating AC Copper Loss for Random Windings. Presented at 2023 26th International Conference on Electrical Machines and Systems (ICEMS), Zhuhai, China

With increased interest in transportation electrification, the accurate modelling and analysis technique of AC copper loss plays a crucial role in the design. The distributed wound stator is dominant in electric car motors due to their suitable chara... Read More about Accurate FEA Modeling Approach for Calculating AC Copper Loss for Random Windings.

Comparative Study on Stranded and Hairpin Windings for 350kW EV Traction Motor (2023)
Presentation / Conference Contribution
Jiang, J., Zou, T., Rocca, S. L., Gerada, D., & Gerada, C. (2023, November). Comparative Study on Stranded and Hairpin Windings for 350kW EV Traction Motor. Presented at 2023 26th International Conference on Electrical Machines and Systems (ICEMS), Zhuhai, China

Hairpin winding is a key technology for traction motors to meet the step-change requirements on power density and efficiency in electrical vehicle (EV) industry. This winding solution features inherently high slot fill factor and improved heat dissip... Read More about Comparative Study on Stranded and Hairpin Windings for 350kW EV Traction Motor.

A Taguchi-LHS-RSM Double-Staged Approach for Design Optimization of Self-Ventilated Cooling Systems Utilized in PMSMs (2023)
Presentation / Conference Contribution
Zhu, G., Xu, Z., Zhang, F., Gerada, C., & Gerada, D. (2023, November). A Taguchi-LHS-RSM Double-Staged Approach for Design Optimization of Self-Ventilated Cooling Systems Utilized in PMSMs. Presented at 26th International Conference on Electrical Machines and Systems (ICEMS), Zhuhai, China

Thermal management is critical for high-power-density permanent magnet synchronous machines (PMSMs). To realize the efficient and effective design optimization of self-ventilated air cooling systems for PMSMs, in this paper, a Taguchi-preconditioned... Read More about A Taguchi-LHS-RSM Double-Staged Approach for Design Optimization of Self-Ventilated Cooling Systems Utilized in PMSMs.

Design of Hairpin Winding and Random Winding Stators for High Speed Heavy-Duty Traction Motor (2023)
Presentation / Conference Contribution
Jiang, J., Zou, T., La Rocca, A., La Rocca, S., Liu, C., Xu, Z., Gerada, C., Zhu, S., Paciura, K., & Gerada, D. (2023, October). Design of Hairpin Winding and Random Winding Stators for High Speed Heavy-Duty Traction Motor. Presented at 2023 IEEE Vehicle Power and Propulsion Conference (VPPC), Milan, Italy

Hairpin winding with rectangularly shaped conductors are gradually replacing random winding wound with stranded wires in electric vehicle (EV) industry. As the newgeneration winding technology, hairpin winding features high electromagnetic and therma... Read More about Design of Hairpin Winding and Random Winding Stators for High Speed Heavy-Duty Traction Motor.

Experimental Simulation and Electromechanical Characterization of Dynamic Air Gap Eccentricity Faults in PMSG (2023)
Journal Article
He, Y., Dai, D., Xu, M., Zhang, W., Liu, X., Li, Y., Xing, Y., Zheng, W., & Gerada, D. (2023). Experimental Simulation and Electromechanical Characterization of Dynamic Air Gap Eccentricity Faults in PMSG. IEEJ Transactions on Electrical and Electronic Engineering, 18(12), 1903-1913. https://doi.org/10.1002/tee.23924

This paper presents a designed experimental simulation scheme for dynamic air gap eccentricity (DAGE) faults in permanent magnet synchronous generator (PMSG), along with the testing of their electromechanical characteristics. Unlike previous studies,... Read More about Experimental Simulation and Electromechanical Characterization of Dynamic Air Gap Eccentricity Faults in PMSG.

Analysis on Rotor Vibration Characteristics under Dynamic Rotor Interturn Short Circuit Fault in Synchronous Generators (2023)
Journal Article
He, Y., Jiang, M., Sun, K., Qiu, M., & Gerada, D. (2023). Analysis on Rotor Vibration Characteristics under Dynamic Rotor Interturn Short Circuit Fault in Synchronous Generators. Energies, 16(18), Article 6585. https://doi.org/10.3390/en16186585

A dynamic rotor interturn short circuit fault may occur during synchronous generator operation. However, there is no method to analyze the generator’s characteristics under the dynamic rotor interturn short circuit fault and identify the fault. In or... Read More about Analysis on Rotor Vibration Characteristics under Dynamic Rotor Interturn Short Circuit Fault in Synchronous Generators.

Research on the Effect of Heat Pipe Inclination Angle on Temperature Distribution in Electrical Machines (2023)
Journal Article
Zhao, H., Zhang, X., Li, J., Zhang, F., Zhang, Y., Yan, H., Zhu, X., Niu, Z., & Gerada, D. (2023). Research on the Effect of Heat Pipe Inclination Angle on Temperature Distribution in Electrical Machines. IEEE Transactions on Industry Applications, 59(6), 6745-6755. https://doi.org/10.1109/tia.2023.3310977

Due to high equivalent thermal conductivity with lightweight and small size, heat pipes (HPs) are being extensively applied in the motor cooling system to improve its thermal performance. However, when practically installed in electrical machines, th... Read More about Research on the Effect of Heat Pipe Inclination Angle on Temperature Distribution in Electrical Machines.

Parameter study for oil spray cooling on endwindings of electric machines via Eulerian–Lagrangian simulation (2023)
Journal Article
Zhao, A., Duwig, C., Liu, C., Gerada, D., & Leksell, M. (2023). Parameter study for oil spray cooling on endwindings of electric machines via Eulerian–Lagrangian simulation. Applied Thermal Engineering, 235, Article 121281. https://doi.org/10.1016/j.applthermaleng.2023.121281

The demand for larger power density and torque for the power traction motors used in electrified transportation puts forward a requirement for better thermal management methods. Spray cooling is a promising direct liquid cooling technique that has be... Read More about Parameter study for oil spray cooling on endwindings of electric machines via Eulerian–Lagrangian simulation.