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This paper investigates the static demagnetization behavior of flux-switching permanent magnet (FSPM) machines during normal operating conditions. A combination of spatial harmonic analysis, magnetic equivalent circuits, and finite element (FE) analysis has been used to study the flux paths associated with the stator windings and their interaction with the permanent magnets (PMs) located on the stator...
This paper presents a promising technique for estimating the cores losses of a fractional-slot concentrated-winding (FSCW) interior permanent magnet (IPM) machine using a simplified lumped-parameter magnetic circuit model (MCM). This model incorporates several key nonlinear phenomena including (i) magnetic saturation; (ii) cross-saturation effects between the d- and q-axes affecting both flux linkages...
In order to improve the wind energy utilization factor of wind-power generation system, a new type of Permanent Magnet Synchronous Generator(PMSG) with Opposite-rotation Dual Rotors(ODR) has been proposed in this paper, mechanical structure and operation mechanism have been discussed. Magnetic field has been analyzed by FEM and circuit method. Magnetic flux, flux density and EMF are calculated to...
This paper presents a numerical analysis of magnetic noise and torque ripples, caused by radial and tangential magnetic forces respectively, in split-phase induction motors. The computation method is based on a magnetic equivalent circuit (MEC) coupled with an electrical circuit and has been developed in the (frequency, spatial order)-domain, such that the effects of the various factors determining...
In this paper there are presented the experimental results for the average power three-phase synchronous generator, connected successively on a controlled bridge rectifier, also on a half-controlled one. There are taken into account the electrical quantities to the generator windings terminals, the damping winding bars currents and the field in different portions of the magnetic circuit. The results...
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