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The construction and design of a new concept permanent magnet induction wind generator for direct grid-connection is proposed and evaluated in this paper. The use of non-overlap windings in this type of generator is proposed for the first time and analysed. Combined analytical and finite element calculation and design-optimisation methods are developed and used in the design of the generator. The...
In this paper, torque characteristics analysis of synchronous reluctance motor by winding function theory is described. The stator is same as one of the induction motor but rotor have two differential geometries of the flux barrier to reduce the torque ripple. The flux barriers were designed by optimization algorism considering torque ripple. Inductances for the separate part of the rotor were calculated...
Accurate calculation of the flux linkage characteristics is the basis of design and control of bearingless switched reluctance motor (BSRM). In this paper, flux linkage of main-and suspended windings for a BSRM were calculated by using 3D finite element method (FEM). A new subregional fitting algorithm was proposed and a novel mathematical model of flux linkage was built by using Fourier series and...
A novel twelve-stator-pole, twenty-two-rotor-pole (12/22) outer-rotor permanent-magnet flux-switching (PMFS) machine for electric propulsion in a lightweight electric vehicle is presented. Analytical equations are derived for the dimensioning of a 3-phase 5kW in-wheel motor. Optimisation techniques are employed to maximise the performance of the machine. The validity of the analytical equations is...
The application of concentrated windings in permanent magnet machines significantly reduces overall machine length, due to the elimination of end winding overlap making it more suitable for areas with space limitations. Efficiency is also increased due to the reduction of copper loss. In order to take full advantage of these benefits, optimization strategies have been implemented and its effects are...
Interior PM synchronous motors (IPMSMs) are used in many industrial and home appliance applications due to their advantages. However, the torque ripple and cogging torque of IPMSM are generally greater than those of surface permanent magnet synchronous motor. Furthermore, the IPMSM with concentrated winding is more disadvantageous than that with distributed winding in the respects. The problems are...
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