High speed operation of electrical machines, a review on technology, benefits and challenges

Moghaddam, Reza Rajabi

doi:10.1109/ecce.2014.6954160

Cited by 70 publications

(27 citation statements)

References 30 publications

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“…Finally, J-and VS-machines maintain reasonable power factor values also at 50 krpm. In conclusion, as evidenced also in [12], above a certain speed (and fundamental frequency) limiting iron losses is crucial to improve machine performances. Material with lower magnetic properties but also reduced losses such as SiFe with high silicon content or ferrites may become a feasible choice in high-speed applications.…”

Section: A Optimal Geometriesmentioning

confidence: 71%

Design of high-speed synchronous reluctance machines

Cupertino

Palmieri

Pellegrino

2015

2015 IEEE Energy Conversion Congress and Exposition (ECCE)

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This paper considers the electromagnetic and structural co-design of synchronous reluctance (SyR) machines for high-speed applications, with the aid of optimization algorithms. The aim of this work is twofold. First, three commercial electrical steel grades are compared to establish quantitatively how steel properties influence the performance of high-speed SyR machines. The considered steel grades are two cobalt-iron alloys and a highgrade non-oriented silicon steel. Second, an original design method is proposed, targeting maximum power density. The results of the analysis show that for the considered machine output power grows with rotational speed up to 70 krpm. Over such speed limit, the performance degrades due to structural limitations. The proposed design procedure is implemented using open source software.

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Section: A Optimal Geometriesmentioning

confidence: 71%

Design of high-speed synchronous reluctance machines

Cupertino

Palmieri

Pellegrino

2015

2015 IEEE Energy Conversion Congress and Exposition (ECCE)

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“…Si hay un alto coeficiente de distorsión armónico en el inversor, se inducirán pérdidas adicionales en el generador. Cuando la frecuencia fundamental de la tensión del generador es muy alta, la modulación por ancho de pulso, (PWM), puede no ser adecuada (Moghaddam, 2014). Las estrategias de control y sus algoritmos también requieren de un mayor ancho de banda a altas frecuencias.…”

Section: Convertidor Electrónico De Potenciaunclassified

“…Así Moghaddam (2014) ha propuesto el denominado índice HS, (high speed), que es igual al producto de la potencia nominal, (MW), por la velocidad nominal de rotación, (krpm). El valor del índice HS resulta significativo respecto a las limitaciones en la potencia de salida como consecuencia de la alta velocidad de rotación.…”

Section: Consideraciones De Diseñounclassified

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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“…There has been growing and continued interest in highspeed and high specific power electrical machines. In [1], a survey of high-speed machines based on various application and machine topologies is reported as shown in Fig 1 and 2. Another survey has been presented in [2] highlighting the key technologies that go into highspeed machines, as well as some performance figure-of-merit (FoM).…”

Section: Section I Introductionmentioning

confidence: 99%

High specific power electrical machines: A system perspective

El-Refaie

Osama

2017

2017 20th International Conference on Electrical Machines and Systems (ICEMS)

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There has been a growing need for high specific power electrical machines for a wide range of applications. These include hybrid/electric traction applications, aerospace applications and Oil and Gas applications. A lot of work has been done to accomplish significantly higher specific power electrical machines especially for aerospace applications. Several machine topologies as well as thermal management schemes have been proposed. Even though there has been a few publications that provided an overview of high-speed and high specific power electrical machines [1-3], the goal of this paper is to provide a more comprehensive review of high specific power electrical machines with special focus on machines that have been built and tested and are considered the leading candidates defining the state-of-the art. Another key objective of this paper is to highlight the key "system-level" tradeoffs involved in pushing electrical machines to higher specific power. Focusing solely on the machine specific power can lead to a sub-optimal solution at the system-level.

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High speed operation of electrical machines, a review on technology, benefits and challenges

Cited by 70 publications

References 30 publications

Design of high-speed synchronous reluctance machines

Design of high-speed synchronous reluctance machines

Generadores Síncronos de Alta Velocidad: Una Evaluación Crítica

High specific power electrical machines: A system perspective

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