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This paper is aimed at improving the efficiency of synchronous reluctance motor (SynRM) and PM assisted SynRM (PMSRM) by optimizing flux barriers on hybrid rotors. Numerous designs are simulated, and results are presented for best possible PMSRM design with high performance by using FEM techniques. The paper reviews analytical methods on SynRM and PMSRM and then focus on SynRM FEM simulation. Two...
In this paper, a nonlinear magnetic circuit network model for the analysis of a three-phase 12-stator-slot/10-rotor-pole flux-switching permanent-magnet (FSPM) motor is proposed considering localized saturation effect, which enables the predictions of open-circuit air-gap field distributions, phase flux-linkage, phase back-electro-motive-force (back-EMF) and winding inductances waveforms. Further,...
Prediction of hybrid stepping motor performance is made possible using an analytical model based on the motor's equivalent magnetic circuit. The motor's static torque behaviour can be determined by drawing the energy balance of the magnetic circuit. Circuit elements consist of magnetomotive forces induced by the permanent magnet and the stator's windings as well as permeances for iron parts and air...
This paper deals with the design of a surface-mounted permanent magnet (SPM) motor operating in a propulsion system of a small ship. The SPM motor is installed in a submersed bulb provided of a propeller. The particular location of the motor together with the very high torque-to-volume ratio required by this application need an accurate coupled magnetic and thermal analysis. The analysis uses both...
Thanks to evolution of permanent magnet, synchronous motors are more and more efficient. Based on an extensive bibliographical research new structures appearing in scientific literature have been studied. Except transverse flux permanent magnet machine, novel structures are principally double air-gaps permanent magnet machines. Their main advantages consist in an increase of torque or power and a...
This paper presents the design and electromagnetic characteristics analysis of a permanent magnet linear synchronous motor (PMLSM). The PMLSM is composed of a primary stator and a secondary mover, which are made up of three-phase copper windings and permanent magnets, respectively. The technical and economic targets of linear motor are directly related to the electromagnetic characteristics. However,...
This paper deals with a design to improve operating characteristic of spoke type BLDC motor. By reason of variation magnetic field, cogging torque is generated. Cogging torque of Spoke type motor is bigger than other type permanent magnet motor. So, this paper presents a design notch on stator and variation rotor shape to reduce cogging torque of Spoke Type motor. Through Fourier formulation of magnetic...
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