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Analytical calculations of electromagnetic quantities for wound rotor salient-pole synchronous machines

Zohreh Delirani (Department of Electrical and Electronic Engineering, Shiraz University of Technology , Shiraz, Islamic Republic of Iran)
Akbar Rahideh (Department of Electrical and Electronic Engineering, Shiraz University of Technology , Shiraz, Islamic Republic of Iran)
Mohammad Mardaneh (Department of Electrical and Electronic Engineering, Shiraz University of Technology , Shiraz, Islamic Republic of Iran)

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering

ISSN: 0332-1649

Article publication date: 15 February 2021

Issue publication date: 20 August 2021

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Abstract

Purpose

This paper aims to present an analytical electromagnetic model for wound rotor synchronous machines with a salient-pole rotor structure based on the two-dimensional subdomain technique.

Design/methodology/approach

The machine is divided into five active sub-regions: stator slots, stator slot openings, air gap, rotor slots and rotor slot openings. For each sub-region, the governing partial differential equations are derived and solved analytically.

Findings

The magnetic flux density distributions in all active sub-regions are analytically computed and other quantities such as back-emf, inductances, electromagnetic torque and unbalanced magnetic forces are also analytically calculated. The results of the analytical model are compared to those obtained from the finite element analysis to show the accuracy of the proposed model.

Originality/value

The two-dimensional analytical model of a wound rotor salient-pole synchronous machine using the sub-domain technique is the main contribution of the research.

Keywords

Citation

Delirani, Z., Rahideh, A. and Mardaneh, M. (2021), "Analytical calculations of electromagnetic quantities for wound rotor salient-pole synchronous machines", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 40 No. 3, pp. 325-357. https://doi.org/10.1108/COMPEL-03-2020-0115

Publisher

:

Emerald Publishing Limited

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