Closed-Form solution for the slot leakage inductance of tooth-coil-winding permanent magnet machines

Carlos Madariaga, Werner Jara, Juan A. Tapia, Juha Pyrhönen, Pia Lindh, JAVIER ALEJANDRO RIEDEMANN AROS

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

This paper presents a methodology for the analytical computation of the slot leakage inductance of tooth-coil winding permanent magnet synchronous machines. Generalized equations for the slot leakage inductance of the whole phase are derived, suitable for several slot-pole combinations, and meant to be used during the machine design stage. For simplicity, self-and mutualinductance components are formulated using the classical method with detailed permeance determination for both horizontal and vertical distribution of coil sides in the slots, considering a straightline path for the flux leakage. Several slot-pole combinations were simulated by means of the finite element (FE) method in order to validate the analytical equations in both approaches, FE and analytical, showing adequate concordance.

Original languageEnglish
Article numberY
Pages (from-to)1572-1580
Number of pages9
JournalIEEE Transactions on Energy Conversion
Volume34
Issue number3
DOIs
StatePublished - Sep 2019
Externally publishedYes

Keywords

  • Electrical machines
  • Finite-element analysis inductance
  • Permanent magnet machines
  • Tooth coil windings.

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