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24 results on '"Boynov, K."'

5. Slotless PM machines with skewed winding shapes: 3D electromagnetic modeling

Author

Jumayev, S., Boynov, K., Paulides, J.J.H., Lomonova, E., Pyrhonen, J., Electromechanics and Power Electronics, and Electromechanics Lab

Subjects
Physics::Atmospheric and Oceanic Physics
Abstract

The 3D modeling technique presented in this paper, predicts, with high accuracy, electromagnetic fields and corresponding dynamic effects in conducting regions for rotating machines with slotless windings, e.g. self-supporting windings. The presented modeling approach can be applied to a wide variety of slotless winding configurations, including skewing and/or different winding shapes. It is capable to account for induced eddy-currents in the conductive rotor parts, e.g. permanent magnet eddy-current losses, albeit not iron and winding AC losses. The specific focus of this paper is to provide the reader with the complete implementation and assumptions details of such a 3D semi-analytical approach, which allows model validations with relatively short calculation times. This model can be used to improve future design optimizations for machines with 3D slotless windings. It has been applied, in this paper, to calculate fixed parameter Faulhaber, Rhombic, and Diamond slotless PM machines to illustrate accuracy and applicability.

Published
2016

16. Comparative analysis of inductances of air-gap windings

Author

Jumayev, S., Borisavljevic, A., Boynov, K., Pyrhönen, J., Lomonova, E.A., Electromechanics and Power Electronics, and Electromechanics Lab

Subjects
Physics::Atmospheric and Oceanic Physics
Abstract

Inductance value of an electrical machine is important for high-speed electrical drives. In this paper, a comparative analysis of inductances of toroidal, skewed and concentrated air-gap windings has been performed. Analytical approach of inductance calculation, using Biot-Savart’s law and method of images, is applied to toroidal and concentrated windings. The analytical method of inductance calculation is verified by FEM 3D. Additionally, comparison of the conductor length of the windings is performed.

Published
2013

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