A Highly Efficient 200 000 RPM Permanent Magnet Motor System

Zhao, Limei; Ham, Chan; Zheng, Ling; Tie-jun, WU; Sundaram, Kalpathy B.; Kapat, Jayanta; Chow, L. C.

doi:10.1109/tmag.2007.893523

Cited by 76 publications

(20 citation statements)

References 7 publications

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“…The objective function is chosen to be the total power losses shown in (2). This is an indirect way to take into account the thermal aspect of the motor.…”

Section: A Optimization Processmentioning

confidence: 99%

Very-High-Speed Slotless Permanent-Magnet Motors: Analytical Modeling, Optimization, Design, and Torque Measurement Methods

Pfister

Perriard

2010

IEEE Trans. Ind. Electron.

184

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Abstract-This paper presents a very-high-speed (VHS) slotless permanent-magnet motor design procedure using an analytical model. The model is used to design the optimal prototype (target: 200 kr/min, 2 kW). The multiphysics analytical model allows a quick optimization process. The presented model includes the magnetic fields, the mechanical stresses in the rotor, the electromagnetic power losses, the windage power losses, and the power losses in the bearings. VHS machines need a new torque measurement method. This paper presents the developed method. It also presents a ball bearing friction torque measurement method designed particularly for VHS machines. Remarkably, the method allowed us to design a prototype which operates beyond the target of speed and power. The results given by the model are compared with the measurements of the prototype.

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“…The objective function is chosen to be the total power losses shown in (2). This is an indirect way to take into account the thermal aspect of the motor.…”

Section: A Optimization Processmentioning

confidence: 99%

Very-High-Speed Slotless Permanent-Magnet Motors: Analytical Modeling, Optimization, Design, and Torque Measurement Methods

Pfister

Perriard

2010

IEEE Trans. Ind. Electron.

184

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“…4.5). Rotors of small high-speed PM generators consist sometimes, though, only of a solid magnet enclosed with a sleeve [29,81] (i.e. r Fe = 0): the configuration that renders lower stress in the magnet, as shown in the previous section.…”

Section: Mechanical Stress In a Pm Rotormentioning

confidence: 92%

“…Nevertheless, sensorless vector control methods require a lot of computation while the processing power of standard microcontrollers and DSPs constrain their complexity when sample periods become very low. Therefore, very powerful or even dual DSPs are needed for realization of sensorless, close-loop control [29] and their price and complexity outweigh benefit that they bring [196].…”

Section: Introductionmentioning

confidence: 99%

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Limits, Modeling and Design of High-Speed Permanent Magnet Machines

Borisavljevic¹

2013

Springer Theses

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“…19. 100W 500,000 rpm PM machine [46] Zhao et al [48], [49] present the design of a 2kW 200,000rpm PM motor for a reverse-turbo Brayton cycle cryocooler. Similarly to [47] a slotless stator is used, and a solid magnet is fit inside a hollow shaft.…”

Section: B High Speed Permanent Magnet Machinesmentioning

confidence: 99%

High-Speed Electrical Machines: Technologies, Trends, and Developments

Gerada

Mebarki

Brown

et al. 2014

IEEE Trans. Ind. Electron.

815

256

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A note on versions:The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription.For more information, please contact eprints@nottingham.ac.ukAbstract-This paper reviews the current technologies used in high speed electrical machines, through an extensive survey of different topologies developed and built in industry as well as in academia for several applications. Developments in materials and components including electrical steels and copper alloys are discussed, and their impact on the machines' operating physical boundaries is investigated. The main application areas pulling the development of high speed machines are also reviewed in an effort to better understand the typical performance requirements.Index Terms-high speed electrical machines, high frequency electrical machines, high strength electrical steels, high frequency electrical steels, copper alloys, thermal modeling, mechanical modeling.

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A Highly Efficient 200 000 RPM Permanent Magnet Motor System

Cited by 76 publications

References 7 publications

Very-High-Speed Slotless Permanent-Magnet Motors: Analytical Modeling, Optimization, Design, and Torque Measurement Methods

Very-High-Speed Slotless Permanent-Magnet Motors: Analytical Modeling, Optimization, Design, and Torque Measurement Methods

Limits, Modeling and Design of High-Speed Permanent Magnet Machines

High-Speed Electrical Machines: Technologies, Trends, and Developments

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