Flywheel Energy Storage System Description and Tests

Andrade, R. de; Sotelo, Guilherme Gonçalves; Ferreira, A.C.; Rolim, L.G.B.; Neto, J.L.S.; Stephan, R.M.; Suemitsu, W.I.; Nicolsky, R.

doi:10.1109/tasc.2007.899056

Cited by 44 publications

(9 citation statements)

References 7 publications

(7 reference statements)

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“…The system involves a vertical-axis flywheel supported by superconducting magnetic bearing (SMB) producing a levitation force to support the system vertically in a frictionless manner [36]. Another PM bearing (PMB) provides radial support to the rotating shaft and reduces load on the SMB.…”

Section: Variable Reluctance Machinesmentioning

confidence: 99%

Energy Storage in Flywheels: An Overview

Awadallah

Venkatesh

2015

Can. J. Electr. Comput. Eng.

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In a deregulated power market with increasing penetration of distributed generators and renewable sources, energy storage becomes a necessity. Renewable energy sources are characterized by a fluctuating and intermittent nature, which simply means that energy may be available when it is not needed, and vice versa. Energy storage devices can help rectify the mismatch between generation and demand at any loading condition. Such devices can also provide some ancillary services, such as frequency regulation, voltage support, power quality improvement, transmission congestion relief, and system upgrade deferral. This paper presents an overview of the flywheel as a promising energy storage element. Electrical machines used with flywheels are surveyed along with their control techniques. Loss minimization and bearing system development are introduced. In addition, power system applications of flywheels are summarized. Finally, some outstanding technical difficulties are recommended for future research work.Résumé-Dans un marché d'énergie libéralisée avec une augmentation de la pénétration des générateurs distribués et des sources renouvelables, le stockage de l'énergie est devenu une nécessité. Les sources d'énergie renouvelables sont caractérisées par leur fluctuation et leur intermittence, ce qui signifie tout que l'énergie peut être disponible quand il n'est pas nécessaire, et vice versa. Les dispositifs de stockage d'énergie peuvent aider à remédier à l'inadéquation entre la production et la demande pour toute condition de chargement. Ces dispositifs peuvent aussi fournir quelques services annexes, comme la régulation de la fréquence, la régulation de tension, l'amélioration de la qualité de l'alimentation, l'allègement de la congestion de transmission, et le report des mises à niveau. Cet article présente un aperçu du volant comme un élément de stockage d'énergie prometteur. Les machines électriques utilisées avec des volants ainsi que leurs techniques de contrôle sont examinées. La minimisation des pertes et le développement du système de palier sont introduits. En plus, les applications du système d'alimentation de volants sont présentées brièvement. Enfin, quelques défis techniques demeurent en suspens pour les futurs travaux de recherche.

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Section: Variable Reluctance Machinesmentioning

confidence: 99%

Energy Storage in Flywheels: An Overview

Awadallah

Venkatesh

2015

Can. J. Electr. Comput. Eng.

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“…The adoption of this machine is due to the fact that it is characterized by a very simple structure, robustness, provides a large starting torque and a large speed range, is rare-earth-material free, and presents a high efficiency. In this way, it has been adopted for many applications, such as in electric and hybrid vehicles [4][5][6], aircraft and aerospace systems [7][8][9][10], home appliances [11], industrial tools [12], wind generators [11][12][13][14][15][16], pumping systems [17][18][19], mining [20] and storage systems [21,22]. However, a very important aspect is that this machine requires a power electronic converter.…”

Section: Introductionmentioning

confidence: 99%

Fault-Tolerant Multilevel Converter to Feed a Switched Reluctance Machine

et al. 2022

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The switched reluctance machine (SRM) is one of the most interesting machines, being adopted for many applications. However, this machine requires a power electronic converter that usually is the most fragile element of the system. Thus, in order to ensure high reliability for this system, it is fundamental to design a power electronic converter with fault-tolerant capability. In this context, a new solution is proposed to give this capability to the system. This converter was designed with the purpose to ensure fault-tolerant capability to two types of switch faults, namely open- and short-circuit. Moreover, apart from this feature, the proposed topology is characterized by a multilevel operation that allows improvement of the performance of the SRM, taking into consideration a wide speed range. Although the proposed solution is presented for an 8/6 SRM, it can be used for other configurations. The operation of the proposed topology will be described for the two modes, fault-tolerant and normal operation. Another aspect that is addressed in this paper is the proposal of fault detection and diagnosis method for this fault-tolerant inverter. It was specifically developed for a multilevel SRM drive. The theoretical assumptions will be verified through two different types of tests, firstly by simulation and secondly by experiments with a laboratory prototype.

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“…Each motor has its own structural characteristics. They have their own advantages and disadvantages in flywheel energy storage systems [3,4] Asynchronous motors (also called induction motors) are widely used. It has mature manufacturing technology, sturdiness and durability, small maintenance workload and low manufacturing cost.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Design of High-Power and High-Speed Permanent Magnet Synchronous Motor Considering Loss Characteristics

Gao

et al. 2021

Energies

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The motor is an important part of the flywheel energy storage system. The flywheel energy storage system realizes the absorption and release of electric energy through the motor, and the high-performance, low-loss, high-power, high-speed motors are key components to improve the energy conversion efficiency of energy storage flywheels. This paper analyzes the operating characteristics of the permanent magnet synchronous motor/generator (PMSG) used in the magnetically levitated flywheel energy storage system (FESS) and calculates the loss characteristics in the drive and power generation modes. Based on this, the electromagnetic part of the motor is optimized in detail. Aiming at this design, this paper calculates the loss characteristics of driving and power generation modes in detail, including its winding loss, core loss, rotor eddy current loss and mechanical loss. The calculation results show that the design meets the loss requirements. It can reduce the no-load loss of the permanent magnet synchronous motor at high speed and improve the energy conversion efficiency, which gives this system practical application prospects.

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Flywheel Energy Storage System Description and Tests

Cited by 44 publications

References 7 publications

Energy Storage in Flywheels: An Overview

Energy Storage in Flywheels: An Overview

Fault-Tolerant Multilevel Converter to Feed a Switched Reluctance Machine

Electromagnetic Design of High-Power and High-Speed Permanent Magnet Synchronous Motor Considering Loss Characteristics

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