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A novel dual-stator hybrid excitation synchronous motor (DSHESM) is proposed in this paper, which combines the advantages of both permanent-magnet (PM) and synchronous motors. The key is to locate the field control windings on the inner stator, and good field-weakening operation is realized. The novel structure can successfully extend the constant power speed range of the conventional surface PM motor...
A limited short circuit current PM motor is studied based on the segmentation of the rotor magnets. The principle is to reduce the magnetic flux by means of magnets subdivision and an increase of rotor pole number. The effect of magnet segmentation on machine characteristics is analyzed using finite element method (FEM). The short circuit current of designed fault tolerant machine is well limited...
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 describes a mathematical model to determine the equivalent circuit parameters of Axial Flux Disc Machines (AFDMs) of whatever configuration. Once fixed the dimensions of the machine (magnet width, winding lengths, axial thickness, etc.), the equivalent inductance and resistance and finally the current are calculated, for a generator operation mode. The model has been implemented in a software...
Due to their simplicity, robustness, high performances and reduced cost, the variable reluctance machines (VRM) occupy today a place of choice in the electromechanical conversion of energy. Hence the growing interest for the study and the design of a new structures more successful and better adapted to the new requirements. The purpose of this paper is to propose a useful and comprehensive design...
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