A Coreless Permanent-Magnet Machine for a Magnetically Levitated Shaft-Less Flywheel

Anvari, Bahareh; Li, Xiaojun; Toliyat, H.A.; Palazzolo, Alan

doi:10.1109/tia.2018.2839747

Cited by 15 publications

(5 citation statements)

References 14 publications

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“…In addition, the application of bearingless PMSMs in FESSs has been studied. This includes the analysis of static electromagnetic attributes of internal bearingless PMSMs (IBPMSMs) with V-shaped PMs for electric vehicle FESSs and the conception of an ironless PM motor for magnetically levitated shaftless flywheels [47,48].…”

Section: Permanent-magnet Motors For Flywheel Energy Storage Systemsmentioning

confidence: 99%

A Review of Flywheel Energy Storage System Technologies

Xu,

Guo,

Lei

et al. 2023

Energies

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The operation of the electricity network has grown more complex due to the increased adoption of renewable energy resources, such as wind and solar power. Using energy storage technology can improve the stability and quality of the power grid. One such technology is flywheel energy storage systems (FESSs). Compared with other energy storage systems, FESSs offer numerous advantages, including a long lifespan, exceptional efficiency, high power density, and minimal environmental impact. This article comprehensively reviews the key components of FESSs, including flywheel rotors, motor types, bearing support technologies, and power electronic converter technologies. It also presents the diverse applications of FESSs in different scenarios. The progress of state-of-the-art research is discussed, emphasizing the use of artificial intelligence methods such as machine learning, digital twins, and data-driven techniques for system simulation, fault prediction, and life-assessment research. The article also addresses the challenges related to current research and the application of FESSs. It concludes by summarizing future directions and trends in FESS research, offering valuable information for further advancement and improvement in this field.

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Section: Permanent-magnet Motors For Flywheel Energy Storage Systemsmentioning

confidence: 99%

A Review of Flywheel Energy Storage System Technologies

Xu,

Guo,

Lei

et al. 2023

Energies

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“…A permanent magnet synchronous machine (PMSM) has high torque density and efficiency. They are popular choices for FESS [41,42,43,44,45]. Design considerations include magnet size, grade, number of poles.…”

Section: Permanent Magnet Synchronous Machinementioning

confidence: 99%

A review of flywheel energy storage systems: state of the art and opportunities

Palazzolo

2022

Journal of Energy Storage

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165

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“…i n and θ n are the amplitude and angle of n-order harmonic. So, PM eddy current loss can be calculated by (12),…”

Section: A 1-d Model (Equivalent Magnetic Circuit) Of Pmsmmentioning

confidence: 99%

“…But the rotor loss has not been analyzed with features and flux distribution of PMSM. Bahareh Anvari's paper [12] analyzed EM with FEM and consider the harmonic PWM Converter but not in no-load operation. Jang-Ho Seo's paper [13] analyzed and optimized loss of PMSM under high-speed of operation condition.…”

Section: Introductionmentioning

confidence: 99%

Equivalent Magnetic Circuit Reluctance Optimization for Rotor Loss Reduction in Permanent Magnet Synchronous Motor for UPS-FESS

Wang

2020

IEEE Access

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Due to poor heat dissipation of rotor, especially in flywheel energy storage system (FESS) for uninterruptible power supply (UPS), there is a higher risk of irreversible demagnetization by rotor temperature rising. Irreversible demagnetization of permanent magnets by rotor loss always is a critical problem of high-speed permanent magnet synchronous machine (PMSM). The stabilization and efficiency can be increased by reduction of rotor loss. By Finite Element Method simulations with experiment date, the rotor temperature rising of the prototype PMSM mainly comes from rotor loss induced by time harmonic. The distribution and components of prototype rotor loss are given. Rotor loss is analyzed by equivalent magnetic circuit with considering time harmonic magnetomotive force in this paper. According to analysis of rotor loss, this paper presents a method to reduce rotor loss without changing stator structure and winding current. This rotor structure optimization will not affect output performance of PMSM. The method has been proved to be available by the no-load experiment finally. It can greatly reduce the rotor loss in no-load operation when PMSM is driven in high-speed operation zone. INDEX TERMS Permanent magnet synchronous machine, rotor loss, magnetic field harmonic, permanent magnet eddy current loss.

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A Coreless Permanent-Magnet Machine for a Magnetically Levitated Shaft-Less Flywheel

Cited by 15 publications

References 14 publications

A Review of Flywheel Energy Storage System Technologies

A Review of Flywheel Energy Storage System Technologies

A review of flywheel energy storage systems: state of the art and opportunities

Equivalent Magnetic Circuit Reluctance Optimization for Rotor Loss Reduction in Permanent Magnet Synchronous Motor for UPS-FESS

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