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Open-Circuit Fault-Tolerant Control for Nonsinusoidal Back EMF Five-Phase PMSM With Copper Loss Reduction (2023)
Journal Article
Wang, H., Gu, C., Zhao, W., Wang, S., Zhao, H., Buticchi, G., Gerada, C., & Zhang, H. (2024). Open-Circuit Fault-Tolerant Control for Nonsinusoidal Back EMF Five-Phase PMSM With Copper Loss Reduction. IEEE Transactions on Industrial Electronics, 71(7), 6524-6533. https://doi.org/10.1109/TIE.2023.3299025

Due to the different design optimization, five-phase electrical machines can have a nonnegligible distortion in their back electromotive force (EMF) waveform. Most fault-tolerant control methods for this machine used extra fundamental and third-order... Read More about Open-Circuit Fault-Tolerant Control for Nonsinusoidal Back EMF Five-Phase PMSM With Copper Loss Reduction.

A Concentrated-Flux-Type PM Machine With Irregular Magnets and Iron Poles (2023)
Journal Article
Xiang, P., Yan, L., Guo, Y., He, X., Gerada, C., & Chen, I.-M. (2024). A Concentrated-Flux-Type PM Machine With Irregular Magnets and Iron Poles. IEEE/ASME Transactions on Mechatronics, 29(1), 691-702. https://doi.org/10.1109/TMECH.2023.3293505

Most industrial applications concern output torque, rotor mass, and utilization of rare Earth permanent-magnet (PM) material of electrical machines. Generally, it is challenging to improve these aspects simultaneously. The objective of this article i... Read More about A Concentrated-Flux-Type PM Machine With Irregular Magnets and Iron Poles.

Nonintrusive Parameter Identification of IoT-Embedded Isotropic PMSM Drives (2023)
Journal Article
Brescia, E., Massenio, P. R., Di Nardo, M., Cascella, G. L., Gerada, C., & Cupertino, F. (2023). Nonintrusive Parameter Identification of IoT-Embedded Isotropic PMSM Drives. IEEE Journal of Emerging and Selected Topics in Power Electronics, 11(5), 5195-5207. https://doi.org/10.1109/JESTPE.2023.3292526

This article proposes a nonintrusive parameter identification procedure suitable for Internet-of-Things (IoT)-embedded isotropic permanent magnet synchronous machines (PMSMs). The method is designed for scenarios where only measurements collected wit... Read More about Nonintrusive Parameter Identification of IoT-Embedded Isotropic PMSM Drives.

Model adaptive collision detection for flexible joint manipulator based on state observer (2023)
Journal Article
Shipeng, C., Yiwei, L., Yongjun, S., & Gerada, C. (2023). Model adaptive collision detection for flexible joint manipulator based on state observer. International Journal of Hydromechatronics, 6(3), 242-257. https://doi.org/10.1504/IJHM.2023.132298

In this paper, a novel collision detection method for flexible joint manipulator, which calculates the difference between theoretical control torque of regression model and measured control torque, is proposed. As the core of the collision detection... Read More about Model adaptive collision detection for flexible joint manipulator based on state observer.

Optimal Design of Bearingless Multi-Three Phases Permanent Magnet Synchronous Machines (2023)
Presentation / Conference Contribution
Di Nardo, M., Ilkhani, M. R., Wang, M., Degano, M., Gerada, C., Gallicchio, G., Cupertino, F., Gartner, M., Brecher, C., & Hoppert, M. (2023, May). Optimal Design of Bearingless Multi-Three Phases Permanent Magnet Synchronous Machines. Presented at 2023 IEEE International Electric Machines & Drives Conference (IEMDC), San Francisco, CA, USA

This paper addresses the design of a multi-three phases sectorial permanent magnet synchronous machine for bearingless applications. After a brief description of the mathematical model of this machine topology along with some preliminary design consi... Read More about Optimal Design of Bearingless Multi-Three Phases Permanent Magnet Synchronous Machines.

Common DC-Link Capacitor Harmonic Current Minimization for Cascaded Converters by Optimized Phase-Shift Modulation (2023)
Journal Article
Zhou, X., Choy, W. J., Alcaide, A. M., Wang, S., Guenter, S., Leon, J. I., Monopoli, V. G., Franquelo, L. G., Liserre, M., Galea, M., Gerada, C., & Buticchi, G. (2023). Common DC-Link Capacitor Harmonic Current Minimization for Cascaded Converters by Optimized Phase-Shift Modulation. Energies, 16(5), Article 2098. https://doi.org/10.3390/en16052098

This paper investigates the influence of a constant carrier phase shift on the DC-link capacitor harmonic current of cascaded converters used in fuel-cell and mild-hybrid electric vehicles. In these applications, a DC-DC converter can be adopted betw... Read More about Common DC-Link Capacitor Harmonic Current Minimization for Cascaded Converters by Optimized Phase-Shift Modulation.

An Improved Control Strategy of PM-Assisted Synchronous Reluctance Machines Based on an Extended State Observer (2022)
Presentation / Conference Contribution
Li, D., Gu, C., Wang, S., Zhang, H., Gerada, C., Camilleri, R., & Zhang, Y. (2022, October). An Improved Control Strategy of PM-Assisted Synchronous Reluctance Machines Based on an Extended State Observer. Presented at 2022 IEEE Transportation Electrification Conference and Expo, Asia-Pacific (ITEC Asia-Pacific), Haining, China

PM-Assisted synchronous reluctance machines (PMSynRM) show large speed fluctuations and poor dynamic response when encountering a large disturbance. Additionally, the PI controller is not capable of eliminating steady-state errors when disturbances a... Read More about An Improved Control Strategy of PM-Assisted Synchronous Reluctance Machines Based on an Extended State Observer.

Sensorless control of IPMSM using a discrete-time super twisting observer by high-frequency current injection in low speed region (2022)
Journal Article
Xu, Z., & Gerada, C. (2022). Sensorless control of IPMSM using a discrete-time super twisting observer by high-frequency current injection in low speed region. Energy Reports, 8(Suppl 15), 650-657. https://doi.org/10.1016/j.egyr.2022.10.166

Control of interior permanent magnet synchronous motors (IPMSMs) has been extensively attempted without any position sensor. At extremely low speeds, sensorless operation would not rely on the fundamental model-based sensorless methods since the situ... Read More about Sensorless control of IPMSM using a discrete-time super twisting observer by high-frequency current injection in low speed region.

Dynamic power decoupling for low-voltage ride-through of grid-forming inverters (2022)
Journal Article
Ji, F., Xu, Z., & Gerada, C. (2022). Dynamic power decoupling for low-voltage ride-through of grid-forming inverters. Energy Reports, 8(Supplement 15), 247-258. https://doi.org/10.1016/j.egyr.2022.10.083

In grid-forming technologies, the power controllers emulate the operation of synchronous generator. The frequency regulation, power-decoupling and virtual inertia are mostly achieved on the basis of small-signal models. However, the transient power a... Read More about Dynamic power decoupling for low-voltage ride-through of grid-forming inverters.

Mitigation of AC Winding Losses for Aircraft Propulsion Motors (2022)
Presentation / Conference Contribution
Hebala, A., Nuzzo, S., Connor, P. H., Volpe, G., Gerada, C., & Galea, M. (2022, October). Mitigation of AC Winding Losses for Aircraft Propulsion Motors. Presented at IECON 2022 – 48th Annual Conference of the IEEE Industrial Electronics Society, Brussels, Belgium

In this paper, the AC copper losses are investigated and mitigated for different permanent magnet synchronous motor designs. AC copper losses can represent a substantial share of the total loss in electrical machines. In an application such as aerosp... Read More about Mitigation of AC Winding Losses for Aircraft Propulsion Motors.

Magnetic Field and Radial Force Analysis of Six-Phase Rotary Machine (2022)
Journal Article
Dong, Z., Yan, L., & Gerada, C. (2022). Magnetic Field and Radial Force Analysis of Six-Phase Rotary Machine. Guidance, Navigation and Control, 02(03), Article 2250011. https://doi.org/10.1142/s273748072250011x

Six-phase permanent magnet synchronous machine and the control system are also widely used in industry, precision instruments and aerospace. However, most PMSMs employ magnet patterns either in alternatively radial magnetization or Halbach array, whi... Read More about Magnetic Field and Radial Force Analysis of Six-Phase Rotary Machine.

Electromechanical Characteristics Analysis under DSISC Fault in Synchronous Generators (2022)
Journal Article
He, Y.-L., Qiu, M.-H., Yuan, X.-H., He, X.-L., Wang, H.-P., Jiang, M.-Y., Gerada, C., & Wan, S.-T. (2022). Electromechanical Characteristics Analysis under DSISC Fault in Synchronous Generators. Machines, 10(6), Article 432. https://doi.org/10.3390/machines10060432

This paper studies the electromechanical characteristics of synchronous generators under dynamic stator interturn short circuit (DSISC). First, the air gap magnetic flux density (MFD) of the generator under normal and DSISC fault was obtained. Then,... Read More about Electromechanical Characteristics Analysis under DSISC Fault in Synchronous Generators.

Electromagnetic Torque Fluctuating Properties under Dynamic RISC Fault in Turbogenerators (2022)
Journal Article
He, Y., Qiu, M., Yuan, X., Wang, H., Jiang, M., Gerada, C., & Wan, S. (2022). Electromagnetic Torque Fluctuating Properties under Dynamic RISC Fault in Turbogenerators. Energies, 15(10), Article 3821. https://doi.org/10.3390/en15103821

This paper analyzes the electromagnetic torque (EMT) fluctuation characteristics in synchronous generators under rotor interturn short-circuit (DRISC) fault. The novelty of this paper is that the DRISC fault is proposed based on the intermittent inte... Read More about Electromagnetic Torque Fluctuating Properties under Dynamic RISC Fault in Turbogenerators.

A PMSM With Enhanced Anisotropic Rotor Configuration for Sensorless Operations (2021)
Journal Article
Xu, Z., Zhang, T., & Gerada, C. (2021). A PMSM With Enhanced Anisotropic Rotor Configuration for Sensorless Operations. IEEE Transactions on Energy Conversion, 36(4), 2872-2883. https://doi.org/10.1109/tec.2021.3069096

Sensorless control technologies based on rotor saliency may not operate well due to the effect of magnetic saturation. In this work, a rotor backend (RB) is attached to an existing rotor structure of a permanent magnet synchronous motor (PMSM) to enh... Read More about A PMSM With Enhanced Anisotropic Rotor Configuration for Sensorless Operations.

Control‑Based Stabilization of DC Microgrid for More Electric Aircraft (2021)
Journal Article
Yang, J., Buticchi, G., Gu, C., Wheeler, P., Zhang, H., & Gerada, C. (2021). Control‑Based Stabilization of DC Microgrid for More Electric Aircraft. Transactions of Nanjing University of Aeronautics and Astronautics, 38(5), 737-746. https://doi.org/10.16356/j.1005-1120.2021.05.003

Electrifying the on-board subsystems of aircraft becomes an inevitable process as being faced with the environmental pollution, along with the proposed concept called more electric aircraft (MEA). With the increasing number of on-board power electron... Read More about Control‑Based Stabilization of DC Microgrid for More Electric Aircraft.

Hybrid Recurrent Neural Network Architecture-Based Intention Recognition for Human-Robot Collaboration (2021)
Journal Article
Gao, X., Yan, L., Wang, G., & Gerada, C. (2021). Hybrid Recurrent Neural Network Architecture-Based Intention Recognition for Human-Robot Collaboration. IEEE Transactions on Cybernetics, 53(3), 1578 - 1586. https://doi.org/10.1109/tcyb.2021.3106543

Human–robot-collaboration requires robot to proactively and intelligently recognize the intention of human operator. Despite deep learning approaches have achieved certain results in performing feature learning and long-term temporal dependencies mod... Read More about Hybrid Recurrent Neural Network Architecture-Based Intention Recognition for Human-Robot Collaboration.

Modeling and analysis in trajectory tracking control for wheeled mobile robots with wheel skidding and slipping: Disturbance rejection perspective (2021)
Journal Article
Gao, X., Yan, L., & Gerada, C. (2021). Modeling and analysis in trajectory tracking control for wheeled mobile robots with wheel skidding and slipping: Disturbance rejection perspective. Actuators, 10(9), Article 222. https://doi.org/10.3390/act10090222

Wheeled mobile robot (WMR) is usually applicable for executing an operational task around complicated environment; skidding and slipping phenomena unavoidably appear during the motion, which thus can compromise the accomplishment of the task. This pa... Read More about Modeling and analysis in trajectory tracking control for wheeled mobile robots with wheel skidding and slipping: Disturbance rejection perspective.

Multi-objective optimisation of the HSPMM rotor based on the multi-physics surrogate model (2021)
Journal Article
Dai, R., Zhang, Y., Wang, T., Zhang, F., Gerada, C., & Zhang, Y. (2021). Multi-objective optimisation of the HSPMM rotor based on the multi-physics surrogate model. IET Electric Power Applications, 15(12), 1616-1629. https://doi.org/10.1049/elp2.12126

High-speed permanent magnetic machine (HSPMM) is attracting more attention due to its high power density, compact size, small rotating inertia, and rapid response capability. However, the design of the HSPMM rotor is a non-linear, multi-physics coupl... Read More about Multi-objective optimisation of the HSPMM rotor based on the multi-physics surrogate model.

Robust Adaptive Control Based on Variable Boundary for a Twin-Motor Cable-Driven System (2021)
Journal Article
Li, B., Yan, L., Gao, X., & Gerada, C. (2022). Robust Adaptive Control Based on Variable Boundary for a Twin-Motor Cable-Driven System. IEEE Transactions on Industrial Electronics, 69(7), 7054-7063. https://doi.org/10.1109/tie.2021.3097609

Cable-driven parallel mechanism has been widely studied due to its advantages of fast response and large workspace. The structural uncertainties in the system often introduce internal disturbance and unavoidably influence its motion precision. Genera... Read More about Robust Adaptive Control Based on Variable Boundary for a Twin-Motor Cable-Driven System.