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

Borisavljevic, A.

doi:10.1007/978-3-642-33457-3

Cited by 57 publications

(54 citation statements)

References 112 publications

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“…En las máquinas eléctricas de alta velocidad se utilizan diferentes tipos de rodamientos: mecánicos, de aire (o de fluido líquido) y magnéticos (Borisavljevic, 2011). Para las velocidades de rotación más elevadas, los rodamientos magnéticos o de aire constituyen la mejor elección.…”

Section: Rodamientosunclassified

Generadores Síncronos de Alta Velocidad: Una Evaluación Crítica

Martínez

Andrada

2017

Inf. tecnol.

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ResumenConsiderando que existen restricciones electromagnéticas, mecánicas y térmicas que condicionan el diseño de las máquinas eléctricas de alta velocidad, se establecen los criterios que conducen a una adecuada selección de la máquina. Además, teniendo en cuenta el estado actual de la tecnología, se presentan los valores críticos en la relación (potencia de salida)/(velocidad de rotación). El artículo se centra en los generadores síncronos de alta velocidad, especialmente en los generadores con imanes permanentes, los alternadores inductores y los alternadores con conmutación de flujo, haciendo hincapié en sus fundamentos constructivos y en sus ventajas e inconvenientes. El análisis se completa con una evaluación crítica que los clasifica, de acuerdo con unos requisitos previamente definidos. Aunque la decisión de la elección final está muy condicionada por la aplicación de interés, puede afirmarse que, en general, los generadores síncronos con imanes permanentes en el rotor constituyen la mejor opción. Palabras clave: máquinas eléctricas de alta velocidad; generadores síncronos; alta frecuencia; alternadores inductores High-Speed Synchronous Generators. A Critical Assessment AbstractConsidering that there are electromagnetic, mechanical and thermal constraints that determine the design of high-speed electrical machines, the criteria that lead to adequate selection of the machine are established in this work. Moreover, taking into account the current state of technology, the critical values in the ratio (output power)/(rotation speed), are presented. The paper focuses on the high-speed synchronous generators, especially in permanent magnet generators, inductor alternators and flux switching alternators, emphasizing their constructive fundamentals and their advantages and disadvantages. The analysis is completed with a critical assessment that classifies them according to previously defined requirements. Although the decision of the final choice is largely determined by the application of interest, it can be said that, in general, synchronous generators with permanent magnets in the rotor are the best option.

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Section: Rodamientosunclassified

Generadores Síncronos de Alta Velocidad: Una Evaluación Crítica

Martínez

Andrada

2017

Inf. tecnol.

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“…In the existing applications different metallic materials such as titanium [13], stainless steel [3], and Inconel [28] can be found. In many high-speed applications metallic sleeves are used for the torque transfer to the shaft, since high-speed PM rotors are often made with solid PM cylinders without the inner shaft in order to avoid high values of stress appearing at inner bore of hollow magnet cylinders [29].…”

Section: B Retaining Sleeve Materialsmentioning

confidence: 99%

“…Topology T3 uses a full pitch overlapping winding with six slots. Beside use of this winding pattern in slotless PM machines in so called toroidal structure [29], [31]; it is also suggested for use in slotted machines [32]. Eventually, topology T4 utilizes 12 slot overlapping winding.…”

Section: Rotor Losses In High-speed Pm Machines With Different Wmentioning

confidence: 99%

Comparative analysis of rotor losses in high-speed permanent magnet machines with different winding configurations considering the influence of the inverter PWM

Merdzan

Paulides

Lomonova

2015

2015 Tenth International Conference on Ecological Vehicles and Renewable Energies (EVER)

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. (2015). Comparative analysis of rotor losses in high-speed permanent magnet machines with different winding configurations considering the influence of the inverter PWM. In Proceedings of the 10th IEEE International Conference on Ecological Vehicles and Renewable Energies (EVER 2015), March 31 -April 2, 2015. Piscataway: Institute of Electrical and Electronics Engineers (IEEE). General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal ? Take down policyIf you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. Abstract-Due to development in fields of materials and power electronics, use of high-speed electrical machines has boosted significantly in recent decades. They are widely used in number of applications, such as electrically assisted turbochargers, flywheel energy storage systems, spindle applications, turbo molecular pumps, micro gas turbines. In applications where high efficiency and high power density are required, the most suitable machine type for high-speed operations is a permanent magnet (PM) machine. In this paper the performance of several different topologies of high-speed PM machines required for use in a micro-gas turbine application are evaluated. Different winding topologies, retaining sleeve materials and magnetization patterns are considered, where the main criterion for the machine performance are eddy current losses in the rotor. Influence of time harmonics in stator currents caused by the inverter Pulse Width Modulation (PWM) is incorporated in the calculation.

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“…For an isotropic steel material, the shear modulus, G, is usually around 80 GPa since G = E/2 (1 + ν) [34]. For a laminated material, its value is slightly lower in the {x, y} radial plane where it has been measured at 79.3 GPa in [29], 55 GPa in [27] and 25 GPa in [33].…”

Section: Effect Of Stator Core Laminationsmentioning

confidence: 99%

Influence of Slots and Rotor Poles Combinations on Noise and Vibrations of Magnetic Origins in `U'-Core Flux-Switching Permanent Magnet Machines

Verez¹,

Barakat²,

Amara³

2014

PIER B

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Abstract-This paper deals with the computation of vibrations and noise of electromagnetic origin for 'U'-shaped stator core flux switching permanent magnet (FSPM) machines. The investigation concerns a family of FSPM stator/rotor configurations with 12 slots and 10, 11, 13, and 14 rotor poles. More precisely, the study focuses on the influence of different number of rotor poles on the sound power level of U-core FSPM machines. Electromagnetic forces acting on the stator frame inner surface are calculated with the Maxwell stress tensor thanks to 2-D finite element (FE) simulations. The local magnetic force density serves then as a boundary condition to the 3-D finite element vibrational simulations of the whole stator frame with housing. Finally, obtained displacements help the authors to conduct the acoustic computations using a dedicated 3-D FE analysis model. The obtained vibro-acoustic spectra help electric machines designers to make appropriate choice of stator/rotor pole combination with respect to specifications at early stages of the design process.

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

Cited by 57 publications

References 112 publications

Generadores Síncronos de Alta Velocidad: Una Evaluación Crítica

Generadores Síncronos de Alta Velocidad: Una Evaluación Crítica

Comparative analysis of rotor losses in high-speed permanent magnet machines with different winding configurations considering the influence of the inverter PWM

Influence of Slots and Rotor Poles Combinations on Noise and Vibrations of Magnetic Origins in `U'-Core Flux-Switching Permanent Magnet Machines

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