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Professor CHRISTOPHER GERADA's Outputs (461)

Optimised Design of Permanent Magnet Assisted Synchronous Reluctance Machines for Household Appliances (2021)
Journal Article
Degano, M., Murataliyev, M., Shuo, W., Barater, D., Buticchi, G., Jara, W., Bianchi, N., Galea, M., & Gerada, C. (2021). Optimised Design of Permanent Magnet Assisted Synchronous Reluctance Machines for Household Appliances. IEEE Transactions on Energy Conversion, 36(4), 3084-3095. https://doi.org/10.1109/tec.2021.3076675

This paper is focused on the design, optimisation and control of a permanent magnet assisted synchronous reluctance machine (PMaSynRel) for low cost high efficiency household appliances, in particular a motor for washing machine. The design and optim... Read More about Optimised Design of Permanent Magnet Assisted Synchronous Reluctance Machines for Household Appliances.

Permanent Magnet Reduction by Current Harmonics Injection for Surface Permanent Magnet Machines (2021)
Presentation / Conference Contribution
De Gaetano, D., Sala, G., Degano, M., & Gerada, C. (2021, April). Permanent Magnet Reduction by Current Harmonics Injection for Surface Permanent Magnet Machines. Presented at 2021 IEEE Workshop on Electrical Machines Design, Control and Diagnosis (WEMDCD 2021), Modena, Italy

This paper presents the analysis of multi-harmonic current injection in multi-three phase surface permanent magnet (SPM) machines. An analytical model, extended to a generic harmonic order, is used to describe and determine the no load flux density,... Read More about Permanent Magnet Reduction by Current Harmonics Injection for Surface Permanent Magnet Machines.

Torque Ripple Suppression for IPMSM using FEA- based Model Predictive Direct Torque Control (2021)
Presentation / Conference Contribution
Nasr, A., Gu, C., Zhao, W., Bozhko, S., & Gerada, C. (2021, April). Torque Ripple Suppression for IPMSM using FEA- based Model Predictive Direct Torque Control. Presented at IEEE Workshop on Electrical Machines Design, Control and Diagnosis (WEMDCD 2021), Modena, Italy

The interest in model predictive direct torque control (MP-DTC) for high-performance dynamic control of electric drives has been growing. Unlike the conventional direct torque control (DTC), MP-DTC can achieve optimal voltage selection by predicting... Read More about Torque Ripple Suppression for IPMSM using FEA- based Model Predictive Direct Torque Control.

Improved Propulsion Motor Design for a Twelve Passenger All-Electric Aircraft (2021)
Presentation / Conference Contribution
Hebala, A., Nuzzo, S., Connor, P. H., Giangrande, P., Gerada, C., & Galea, M. (2021, April). Improved Propulsion Motor Design for a Twelve Passenger All-Electric Aircraft. Presented at IEEE Workshop on Electrical Machines Design, Control and Diagnosis (WEMDCD 2021), Modena, Italy

This paper investigates the design of a 12-seater aircraft electric propulsion motor (ProMo). The design procedures aim to improve the performance of a previously designed motor, while adding further restrictions to the electrical and thermal boundar... Read More about Improved Propulsion Motor Design for a Twelve Passenger All-Electric Aircraft.

A Novel Current Limitation Technique Exploiting the Maximum Capability of Power Electronic Inverter and Bearingless Machine (2021)
Journal Article
Wen, Z., Valente, G., Formentini, A., Papini, L., Gerada, C., & Zanchetta, P. (2021). A Novel Current Limitation Technique Exploiting the Maximum Capability of Power Electronic Inverter and Bearingless Machine. IEEE Transactions on Industry Applications, 57(6), 7012-7023. https://doi.org/10.1109/tia.2021.3069149

This article presents a current limitation technique for a multiphase bearingless machine featuring a combined winding system. This winding structure allows the machine to produce both suspension force and motoring torque. The main challenges with th... Read More about A Novel Current Limitation Technique Exploiting the Maximum Capability of Power Electronic Inverter and Bearingless Machine.

4-MW Class High-Power-Density Generator for Future Hybrid-Electric Aircraft (2021)
Journal Article
Golovanov, D., Gerada, D., Sala, G., Degano, M., Trentin, A., Connor, P. H., Xu, Z., Rocca, A. L., Galassini, A., Tarisciotti, L., Eastwick, C. N., Pickering, S. J., Wheeler, P., Clare, J., Filipenko, M., & Gerada, C. (2021). 4-MW Class High-Power-Density Generator for Future Hybrid-Electric Aircraft. IEEE Transactions on Transportation Electrification, 7(4), 2952-2964. https://doi.org/10.1109/TTE.2021.3068928

This article describes the underpinning research, development, construction, and testing of a 4-MW multithree phase generator designed for a hybrid-electric aircraft propulsion system demonstrator. The aim of the work is to demonstrate gravimetric po... Read More about 4-MW Class High-Power-Density Generator for Future Hybrid-Electric Aircraft.

A thermal modeling approach and experimental validation for an oil spray-cooled hairpin winding machine (2021)
Journal Article
Zhang, F., Gerada, D., Xu, Z., Liu, C., Zhang, H., Zou, T., Chong, Y. C., & Gerada, C. (2021). A thermal modeling approach and experimental validation for an oil spray-cooled hairpin winding machine. IEEE Transactions on Transportation Electrification, 7(4), 2914--2926. https://doi.org/10.1109/tte.2021.3067601

While the electromagnetic aspects of hairpin windings are actively being investigated and discussed in recent literature, including the design rules together with the loss calculation and reduction techniques, the thermal performance and modeling asp... Read More about A thermal modeling approach and experimental validation for an oil spray-cooled hairpin winding machine.

Enhanced Active Disturbance Rejection Current Controller for Permanent Magnet Synchronous Machines Operated at Low Sampling Time Ratio (2021)
Journal Article
Diab, A. M., Yeoh, S. S., Bozhko, S., Gerada, C., & Galea, M. (2022). Enhanced Active Disturbance Rejection Current Controller for Permanent Magnet Synchronous Machines Operated at Low Sampling Time Ratio. IEEE Journal of Emerging and Selected Topics in Industrial Electronics, 3, 230-241. https://doi.org/10.1109/JESTIE.2021.3063919

Recently, Active Disturbance Rejection Control (ADRC) Scheme has been widely used for current regulation in AC drive systems owing to its robustness to system uncertainties and its high disturbance-rejection capability. However, it has not been consi... Read More about Enhanced Active Disturbance Rejection Current Controller for Permanent Magnet Synchronous Machines Operated at Low Sampling Time Ratio.

The Novel Singular-Perturbation-Based Adaptive Control with σ-Modification for Cable Driven System (2021)
Journal Article
Li, B., Yan, L., & Gerada, C. (2021). The Novel Singular-Perturbation-Based Adaptive Control with σ-Modification for Cable Driven System. Actuators, 10(3), Article 45. https://doi.org/10.3390/act10030045

Due to their large working space and fast response, cable driven systems have been widely applied in manufacturing, robotics and motion simulators, etc. However, the cable is flexible and tends to resonate at high frequencies, which raises challenges... Read More about The Novel Singular-Perturbation-Based Adaptive Control with σ-Modification for Cable Driven System.

Open-Circuit Fault Control Techniques for Bearingless Multisector Permanent Magnet Synchronous Machines (2021)
Journal Article
Wen, Z., Valente, G., Formentini, A., Papini, L., Gerada, C., & Zanchetta, P. (2021). Open-Circuit Fault Control Techniques for Bearingless Multisector Permanent Magnet Synchronous Machines. IEEE Transactions on Industry Applications, 57(3), 2527-2536. https://doi.org/10.1109/tia.2021.3060368

This article presents three-phase and single-phase open-circuit fault-tolerant control strategies of radial suspension force and torque generation for bearingless multisector surface mounted permanent magnet synchronous machines. A combined winding t... Read More about Open-Circuit Fault Control Techniques for Bearingless Multisector Permanent Magnet Synchronous Machines.

Fast and Simple Tuning Rules of Synchronous Reference Frame Proportional-Integral Current Controller (2021)
Journal Article
Diab, A. M., Bozhko, S., Guo, F., Rashed, M., Buticchi, G., Xu, Z., Yeoh, S. S., Gerada, C., & Galea, M. (2021). Fast and Simple Tuning Rules of Synchronous Reference Frame Proportional-Integral Current Controller. IEEE Access, 9, 22156-22170. https://doi.org/10.1109/access.2021.3054845

Synchronous reference frame proportional-integral (PI) current controller (CC) is considered the most well-established solution for the current regulation in electrical drives. However, the gain selection of the PI CC is still regarded to be poorly r... Read More about Fast and Simple Tuning Rules of Synchronous Reference Frame Proportional-Integral Current Controller.

Improving the Saliency of a High Speed SynRel Rotor by using High Strength Martensitic Sleeve (2021)
Presentation / Conference Contribution
Ram Kumar, R. M., Vakil, G., La Rocca, A., Gerada, D., Gerada, C., & Fernandes, B. G. (2021, January). Improving the Saliency of a High Speed SynRel Rotor by using High Strength Martensitic Sleeve. Presented at 2021 International Conference on Sustainable Energy and Future Electric Transportation (SEFET), Hyderabad, India

High strength magnetic steel laminations are the invariable choice to achieve the power density demands of high speed electric machines required in the automotive industry. However, the cost competitive automobile market, favours the use of conventio... Read More about Improving the Saliency of a High Speed SynRel Rotor by using High Strength Martensitic Sleeve.

Lifetime Estimation of Enameled Wires Under Accelerated Thermal Aging Using Curve Fitting Methods (2021)
Journal Article
Khowja, M. R., Turabee, G., Giangrande, P., Madonna, V., Cosma, G., Vakil, G., Gerada, C., & Galea, M. (2021). Lifetime Estimation of Enameled Wires Under Accelerated Thermal Aging Using Curve Fitting Methods. IEEE Access, 9, 18993-19003. https://doi.org/10.1109/access.2021.3052058

Estimating the lifetime of enameled wires using the conventional/standard test method requires a significant amount of time that can endure up to thousands of testing hours, which could considerably delay the time-to-market of a new product. This pap... Read More about Lifetime Estimation of Enameled Wires Under Accelerated Thermal Aging Using Curve Fitting Methods.

Active Thermal Control for Modular Power Converters in Multi-Phase Permanent Magnet Synchronous Motor Drive System (2021)
Journal Article
Yan, H., Zhao, W., Buticchi, G., & Gerada, C. (2021). Active Thermal Control for Modular Power Converters in Multi-Phase Permanent Magnet Synchronous Motor Drive System. IEEE Access, 9, 7054-7063. https://doi.org/10.1109/access.2021.3049293

Modular winding structure has been employed in the Permanent Magnet SynchronousMotors (PMSMs) to increase the reliability and reduce the torque ripple. Nevertheless, the reliability ofthe motor system depends on the lifetime of the power semiconducto... Read More about Active Thermal Control for Modular Power Converters in Multi-Phase Permanent Magnet Synchronous Motor Drive System.

Optimization and Analysis of a High Power Density and Fault Tolerant Starter–Generator for Aircraft Application (2020)
Journal Article
Wang, B., Vakil, G., Liu, Y., Yang, T., Zhang, Z., & Gerada, C. (2021). Optimization and Analysis of a High Power Density and Fault Tolerant Starter–Generator for Aircraft Application. Energies, 14(1), Article 113. https://doi.org/10.3390/en14010113

Permanent magnet synchronous machines provide many dramatic electromagnetic performances such as high efficiency and high power density, which make them more competitive in aircraft electrification, whereas, designing a permanent magnet starter–gener... Read More about Optimization and Analysis of a High Power Density and Fault Tolerant Starter–Generator for Aircraft Application.

Analysis and Performance of Five-Phase Piecewise-Random-Switching-Frequency Space Vector Pulse Width Modulation (2020)
Journal Article
Bu, F., Liu, Q., Pu, T., Zhao, Y., Ma, B., Ma, C., Degano, M., & Gerada, C. (2021). Analysis and Performance of Five-Phase Piecewise-Random-Switching-Frequency Space Vector Pulse Width Modulation. IEEE Transactions on Energy Conversion, 36(3), 2339-2347. https://doi.org/10.1109/tec.2020.3046835

In order to better address the problem of many high-order harmonics' concentration in the output voltage, a novel five-phase piecewise-random-switching-frequency space vector pulse width modulation (PRSF-SVPWM) strategy is proposed for a five-phase v... Read More about Analysis and Performance of Five-Phase Piecewise-Random-Switching-Frequency Space Vector Pulse Width Modulation.

Electrical Machines for the More Electric Aircraft: Partial Discharges Investigation (2020)
Journal Article
Madonna, V., Giangrande, P., Zhao, W., Zhang, H., Gerada, C., & Galea, M. (2021). Electrical Machines for the More Electric Aircraft: Partial Discharges Investigation. IEEE Transactions on Industry Applications, 57(2), 1389-1398. https://doi.org/10.1109/TIA.2020.3046434

Modern electrical machines employed in transportation applications are required to provide high performance in terms of power (and torque) density. At the same time, being these applications safety-critical, a significant level of reliability and/or... Read More about Electrical Machines for the More Electric Aircraft: Partial Discharges Investigation.

Analysis and Design of Dual-Rotor Synchronous Reluctance Machine (2020)
Journal Article
Alani, M., Degano, M., Bianchi, N., Mahmoud, H., & Gerada, C. (2021). Analysis and Design of Dual-Rotor Synchronous Reluctance Machine. IEEE Journal of Emerging and Selected Topics in Power Electronics, 9(4), 4376-4383. https://doi.org/10.1109/jestpe.2020.3047404

To push the synchronous reluctance machine toward higher power densities to meet the requirement of automotive applications, a double-rotor (DR) synchronous reluctance topology has been thoroughly analyzed, designed, and investigated by means of fini... Read More about Analysis and Design of Dual-Rotor Synchronous Reluctance Machine.