Method-Specific Significance of Field Components in Three Methods of Torque Estimation

Show simple item record Kumar, Naveen E. Ragavan, K 2019-12-03T14:21:43Z 2019-12-03T14:21:43Z 2019-12
dc.identifier.citation Kumar, Naveen E. and Ragavan, K.,"Method-specific significance of field components in three methods of torque estimation", IEEE Transactions on Magnetics, DOI: 10.1109/TMAG.2019.2945905, vol. 55, No. 12, Dec. 2019. en_US
dc.identifier.issn 0018-9464
dc.description.abstract Magnetic field distribution in the airgap of rotating machines, consisting of tangential and normal components, determines the instantaneous value of torque. Lorentz force (LF), Maxwell stress tensor (MST), and virtual work (VW) methods are commonly used to estimate its value. In their well-known forms, as used by design engineers of rotating machines, these three methods reflect distinct significance for field components. The LF method does not require the distribution of tangential field components to compute torque, whereas in MST and VW, it is required. In this article, torque expression-based equivalence of LF, MST, and VW methods is presented, starting from a simple two-coil conceptual system. Using this equivalence as a basis, certain indicative factors are derived, which provide insights on the typical significance of the tangential component in average and ripple torque. The analysis presented here helps designers obtain a better overview of the method-specific significance of field components and flux paths in instantaneous torque, from a numerical perspective.
dc.description.statementofresponsibility by E. Naveen Kumar and K. Ragavan
dc.format.extent vol. 55, No. 12
dc.language.iso en_US en_US
dc.publisher Institute of Electrical and Electronics Engineers en_US
dc.subject Comparison en_US
dc.subject leakage flux en_US
dc.subject Lorentz force (LF) en_US
dc.subject Maxwell stress tensor (MST) en_US
dc.subject permanent magnet (PM) motor en_US
dc.subject torque estimation en_US
dc.title Method-Specific Significance of Field Components in Three Methods of Torque Estimation en_US
dc.type Article en_US
dc.relation.journal IEEE Transactions on Magnetics

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