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An analytical modelling technique to calculate the generated magneto-motive force (MMF) and back-EMF of fractional slot concentrated wound (FSCW) permanent magnet synchronous machines (PMSMs) is reported. The generated MMF of a FSCW stator is analyzed and modelled using a Fourier series technique. General expressions of the harmonic winding factors for FCSW stators with different slot-pole combinations...
The application of concentrated windings in interior permanent magnet (IPM) machines has been claimed to enhance high-speed performance by increasing flux- weakening capabilities of the machine. However this is at the expense of a higher cogging torque, decreased winding factor as well as saliency ratio. This paper illustrates the effects of implementing methods used to improve open circuit characteristics...
The use of concentrated windings in the interior permanent magnet (IPM) machine reduces its axial length and increases high-speed performance by enhancing flux- weakening capability although at the expense of higher cogging torque, decrease in winding factor and saliency ratio. In order to take full advantage of the concentrated winding in the IPM machine, optimization is required to minimize cogging...
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