Title :
Calculation of d- and q-axis inductances of PM brushless ac machines accounting for skew
Author :
Chen, Y.S. ; Zhu, Z.Q. ; Howe, D.
Author_Institution :
Coll. of Electr. Eng., Zhejiang Univ., Hangzhou, China
Abstract :
A hybrid two-dimensional (2-D) finite-element/analytical technique is described for predicting the d-axis and q-axis inductances of permanent magnet (PM) brushless ac machines, with due account for the influence of skew. Predicted inductances are compared with measured values for two machines having identical stators, which are skewed by one slot-pitch, but which have different rotor topologies, one having surface-mounted magnets and the other having interior magnets.
Keywords :
AC motors; brushless machines; electromagnetic induction; finite element analysis; inductance measurement; magnetic devices; permanent magnet machines; rotors; stators; PM brushless ac machines; finite element technique; inductances; interior magnets; permanent magnet machines; rotor topologies; skew; stators; surface-mounted magnets; AC machines; Finite element methods; Inductance; Machine windings; Magnetic analysis; Magnetic flux; Permanent magnets; Saturation magnetization; Stators; Two dimensional displays; Brushless machine; permanent magnet (PM); permanent magnet (PM) machine; winding inductance;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2005.854976
