EAN: 9789811087073

ADVANCED THEORY OF FRACTIONAL-SLOT CONCENTRATED...

This book focuses on the analytical modeling of fractional-slot concentrated-wound (FSCW)
interior permanent magnet (IPM) machines and establishes a basis for their magnetic and
electrical analysis. Aiming at the precise modeling of FSCW IPM machines' magnetic and
electrical characteristics  it presents a comprehensive mathematical treatment of the stator
magneto-motive force (MMF)  the IPM rotor non-homogeneous magnetic saturation  and its airgap
flux density. The FSCW stator spatial MMF harmonics are analytically formulated  providing a
basis on which a novel heuristic algorithm is then proposed for the design of optimal winding
layouts for multiphase FSCW stators with different slot pole combinations. In turn  the
proposed mathematical models for the FSCW stator and the IPM rotor are combined to derive
detailed mathematical expressions of its operational inductances  electromagnetic torque 
torque ripple and their respective subcomponents  as a function of the machine geometryand
design parameters. Lastly  the proposed theories and analytical models are validated using
finite element analysis and experimental tests on a prototype FSCW IPM machine.

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