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An Analytical-Numerical Approach to Model and Analyse Squirrel Cage Induction Motors (2020)
Journal Article
Marfoli, A., Papini, L., Bolognesi, P., & Gerada, C. (2021). An Analytical-Numerical Approach to Model and Analyse Squirrel Cage Induction Motors. IEEE Transactions on Energy Conversion, 36(1), 421-430. https://doi.org/10.1109/tec.2020.3007385

Nowadays, finite element analysis represents the most accurate tool to analyse electrical machines. However, the time domain resolution of electromagnetic problem, in some cases, requires long simulation time due to the induced nature of the currents... Read More about An Analytical-Numerical Approach to Model and Analyse Squirrel Cage Induction Motors.

Torque Ripple Investigation in Squirrel Cage Induction Machines (2019)
Conference Proceeding
Marfoli, A., Sala, G., Papini, L., Bolognesi, P., & Gerada, C. (2019). Torque Ripple Investigation in Squirrel Cage Induction Machines. In 2019 IEEE International Electric Machines & Drives Conference (IEMDC) (140-146). https://doi.org/10.1109/IEMDC.2019.8785364

Low torque ripple of electrical machines is an important requirement for many different applications. The causes of torque fluctuations in squirrel cage asynchronous induction motors might be a challenging task due to the complex phenomena raised by... Read More about Torque Ripple Investigation in Squirrel Cage Induction Machines.

Single-Phase Open-Circuit Fault Operation of Bearingless Multi-Sector PM Machines (2019)
Conference Proceeding
Wen, Z., Valente, G., Formentini, A., Papini, L., Zanchetta, P., & Gerada, C. (2019). Single-Phase Open-Circuit Fault Operation of Bearingless Multi-Sector PM Machines. In Proceedings of 2019 IEEE International Electric Machines & Drives Conference (IEMDC) (1087-1092). https://doi.org/10.1109/IEMDC.2019.8785111

This paper investigates the single-phase open-circuit fault of a bearingless multi-sector PM synchronous machine. The mathematical model of the suspension force and torque generation is developed for both healthy and faulty conditions. The model is w... Read More about Single-Phase Open-Circuit Fault Operation of Bearingless Multi-Sector PM Machines.

A Holistic Electrical Machine Design Tool for More-Electric and Hybrid-Electric Aircraft (2018)
Conference Proceeding
Golovanov, D., Xu, Z., Gerada, D., Gerada, C., & Papini, L. (2018). A Holistic Electrical Machine Design Tool for More-Electric and Hybrid-Electric Aircraft. In 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.2018.8607715

The power density of electrical machines required for more-electric and hybrid-electric aircraft has become a critical aspect and target of optimization. This paper looks at the development aspects of a multi-domain tool to aid for system-level optim... Read More about A Holistic Electrical Machine Design Tool for More-Electric and Hybrid-Electric Aircraft.

Open-circuit fault tolerant study of bearingless multi-sector permanent magnet machines (2018)
Conference Proceeding
Valente, G., Papini, L., Formentini, A., Gerada, C., & Zanchetta, P. (2018). Open-circuit fault tolerant study of bearingless multi-sector permanent magnet machines. . https://doi.org/10.23919/IPEC.2018.8507470

This paper presents a fault tolerant study of a multiphase sectored permanent magnet synchronous machine involving a tripel three-phase winding. The machine electromagnetic model is written in a general way so that it can be extended and applied to a... Read More about Open-circuit fault tolerant study of bearingless multi-sector permanent magnet machines.

Performance Improvement of Bearingless Multisector PMSM With Optimal Robust Position Control (2018)
Journal Article
Valente, G., Formentini, A., Papini, L., Gerada, C., & Zanchetta, P. (2019). Performance Improvement of Bearingless Multisector PMSM With Optimal Robust Position Control. IEEE Transactions on Power Electronics, 34(4), 3575-3585. https://doi.org/10.1109/TPEL.2018.2853038

© 2018 IEEE. Bearingless machines are relatively new devices that consent to suspend and spin the rotor at the same time. They commonly rely on two independent sets of three-phase windings to achieve a decoupled torque and suspension force control. I... Read More about Performance Improvement of Bearingless Multisector PMSM With Optimal Robust Position Control.

Design and testing of electromechanical actuator for aerospace applications (2018)
Conference Proceeding
Papini, L., Connor, P., Patel, C., Empringham, L., Gerada, C., & Wheeler, P. (2018). Design and testing of electromechanical actuator for aerospace applications. In 2018 25th International Workshop on Electric Drives: Optimization in Control of Electric Drives (IWED2018) - Proceedings (1-6). https://doi.org/10.1109/IWED.2018.8321392

Electromechanical actuators are gaining interest in the aerospace industry within the More Electrical Aircraft (MEA) architecture. The end-goal of fully electric aircraft includes Electromechanical actuation for flight control systems. The design and... Read More about Design and testing of electromechanical actuator for aerospace applications.

Space vectors and pseudo inverse matrix methods for the radial force control in bearingless multi-sector permanent magnet machines (2018)
Journal Article
Sala, G., Valente, G., Formentini, A., Papini, L., Gerada, D., Zanchetta, P., …Gerada, C. (2018). Space vectors and pseudo inverse matrix methods for the radial force control in bearingless multi-sector permanent magnet machines. IEEE Transactions on Industrial Electronics, 65(9), 6912-6922. https://doi.org/10.1109/TIE.2018.2795590

Two different approaches to characterize the torque and radial force production in a Bearingless Multi-Sector Permanent Magnet (BMSPM) machine are presented in this work. The first method consists of modelling the motor in terms of torque and force p... Read More about Space vectors and pseudo inverse matrix methods for the radial force control in bearingless multi-sector permanent magnet machines.

Radial force control of Multi-Sector Permanent Magnet machines considering radial rotor displacement (2017)
Conference Proceeding
Valente, G., Papini, L., Formentini, A., Gerada, C., & Zanchetta, P. (2017). Radial force control of Multi-Sector Permanent Magnet machines considering radial rotor displacement. In Proceedings - 2017 IEEE Workshop on Electrical Machines Design, Control and Diagnosis (WEMDCD) (140-145). https://doi.org/10.1109/WEMDCD.2017.7947737

A mathematical model enabling to predict the electromagnetic x-y forces and torque for a given input current in a Multi-Sector Permanent Magnet Synchronous (MSPMS) machine is presented. The rotor static eccentricity is also accounted and the analytic... Read More about Radial force control of Multi-Sector Permanent Magnet machines considering radial rotor displacement.

Position control study of a bearingless multi-sector permanent magnet machine (2017)
Conference Proceeding
Valente, G., Formentini, A., Papini, L., Zanchetta, P., & Gerada, C. (2017). Position control study of a bearingless multi-sector permanent magnet machine. In Proceedings IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society (8808-8813). https://doi.org/10.1109/IECON.2017.8217548

Bearingless motors combine in the same structure the characteristics of conventional motors and magnetic bearings. Traditional bearingless machines rely on two independent sets of winding for suspension force and torque production, respectively. The... Read More about Position control study of a bearingless multi-sector permanent magnet machine.

Radial force control of multi-sector permanent magnet machines for vibration suppression (2017)
Journal Article
Valente, G., Papini, L., Formentini, A., Gerada, C., & Zanchetta, P. (2018). Radial force control of multi-sector permanent magnet machines for vibration suppression. IEEE Transactions on Industrial Electronics, 65(7), 5395-5405. https://doi.org/10.1109/TIE.2017.2780039

Radial force control in electrical machines has been widely investigated for a variety of bearingless machines, as well as for the conventional structures featuring mechanical bearings. This paper takes advantage of the spatial distribution of the wi... Read More about Radial force control of multi-sector permanent magnet machines for vibration suppression.

Multi-domain optimization of high power-density PM electrical machines for system architecture selection (2017)
Journal Article
Golovanov, D., Papini, L., Gerada, D., Xu, Z., & Gerada, C. (2018). Multi-domain optimization of high power-density PM electrical machines for system architecture selection. IEEE Transactions on Industrial Electronics, 65(7), 5302-5312. https://doi.org/10.1109/TIE.2017.2772188

The power density of electrical machines for transport applications has become a critical aspect and target of optimization. This paper looks at the development of an intelligent, rapid, flexible, and multidomain tool to aid for system-level optimiza... Read More about Multi-domain optimization of high power-density PM electrical machines for system architecture selection.

Holistic electrical machine optimization for system integration (2017)
Conference Proceeding
Gerada, D., Golovanov, D., Xu, Z., Papini, L., Degano, M., Zhang, H., & Gerada, C. (2017). Holistic electrical machine optimization for system integration. In 2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia (IFEEC 2017 - ECCE Asia) (980-985). https://doi.org/10.1109/IFEEC.2017.7992174

The power density of electrical machines required for transport applications has become a critical aspect and target of optimization. This paper looks at the development aspects of a multi-domain tool to aid for system-level optimization of electrica... Read More about Holistic electrical machine optimization for system integration.

Analytical thermal model for fast stator winding temperature prediction (2017)
Journal Article
Sciascera, C., Giangrande, P., Papini, L., Gerada, C., & Galea, M. (2017). Analytical thermal model for fast stator winding temperature prediction. IEEE Transactions on Industrial Electronics, 64(8), 6116-6126. https://doi.org/10.1109/TIE.2017.2682010

This paper introduces an innovative thermal modelling technique which accurately predicts the winding temperature of electrical machines, both at transient and steady state conditions, for applications where the stator Joule losses are the dominant h... Read More about Analytical thermal model for fast stator winding temperature prediction.

Active Magnetic Bearing system design featuring a predictive current control (2016)
Conference Proceeding
Papini, L., Tarisciotti, L., Costabeber, A., Gerada, C., & Wheeler, P. (2016). Active Magnetic Bearing system design featuring a predictive current control. In IECON 2016 Proceedings - 42nd Annual Conference of the IEEE Industrial Electronics Society (3217-3222). https://doi.org/10.1109/IECON.2016.7793444

Active Magnetic Bearing (AMB) technology is becoming attractive for several reasons such as high speed operations, high reliability and vibrations exemption. Moreover, AMB can behave as active vibration dampers and provide a real-time control of the... Read More about Active Magnetic Bearing system design featuring a predictive current control.

High speed drives review: machines, converters and applications (2016)
Conference Proceeding
Abebe, R., Di Nardo, M., Gerada, D., Lo Calzo, G., Papini, L., & Gerada, C. (2016). High speed drives review: machines, converters and applications.

The development of new power electronic device and high performance magnetic materials are the main technological factors that have led both industries and research community to focus their attention on high speed electrical drives. Several papers ha... Read More about High speed drives review: machines, converters and applications.

Radial force control of multi-sector permanent magnet machines (2016)
Conference Proceeding
Valente, G., Papini, L., Formentini, A., Gerada, C., & Zanchetta, P. (2016). Radial force control of multi-sector permanent magnet machines.

The paper presents an alternative radial force control technique for a Multi-Sector Permanent Magnet machine (MSPM). Radial force control has been widely investigated for a variety of bearingless machines and can be also applied to conventional PMSM... Read More about Radial force control of multi-sector permanent magnet machines.

Demagnetisation analysis for Halbach array configurations in electrical machines (2015)
Journal Article
Galea, M., Papini, L., Zhang, H., Gerada, C., & Hamiti, T. (2015). Demagnetisation analysis for Halbach array configurations in electrical machines. IEEE Transactions on Magnetics, 51(9), https://doi.org/10.1109/TMAG.2015.2429645

This paper proposes and investigates an analytical method for assessing the risk of potential, irreversible demagnetisation in the PMs of electrical machines, equipped with n-stages, Halbach arrays. The higher risk of demagnetisation, synonymous with... Read More about Demagnetisation analysis for Halbach array configurations in electrical machines.

A high-speed permanent-magnet machine for fault-tolerant drivetrains (2013)
Journal Article
Papini, L., Tsarfidy, R., Gerada, D., & Gerada, C. (2013). A high-speed permanent-magnet machine for fault-tolerant drivetrains. IEEE Transactions on Industrial Electronics, 61(6), https://doi.org/10.1109/TIE.2013.2282604

This paper details the design considerations of a permanent magnet (PM), three phase, high speed, synchronous machine for fault tolerant operation. A multidisciplinary approach to the optimal design of the machine is adopted targeted at minimising th... Read More about A high-speed permanent-magnet machine for fault-tolerant drivetrains.