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This paper presents a design methodology of a synchronous reluctance motor (SynRM) based on the equivalent electrical parameters model. The parameters of the model are calculated using FEM 2D simulations and corroborated with experimental results. In addition, the experimental test procedure applied to the prototype is presented.
An existing permanent magnet generator for a 10KW wind turbine application has been upgraded. The upgrading procedure has been addressed applying a design methodology which has been also described in detail in this paper. Finally the developed design has been prototyped and it has been validated experimentally in a test bench. This way it has been verified that the developed design fulfill all design...
This document reflects the work done to design a torque control strategy for an axial flux switched reluctance machine. The electrical model is first presented but as the switched reluctance machine behaves nonlinearly a finite element method characterization is performed. Once the machine is characterized a Simulink model is developed where a torque control strategy is proposed.
This paper is devoted to the outlines of a research project under a European Union Seventh Framework Programme grant. The Venus European project is working on developing an axial flux electrical machine for an electrical vehicle. Between different possible topologies a switched reluctance topology has been chosen. In order to validate the design tools for this uncommon topology a comparison between...
The design of Synchronous Reluctance Motor (SynRM) has a lot of variables. There are some difficulties to design proper rotor-flux barrier geometry. It is necessary obtain an optimized geometry to get the satisfactory results of torque ripple, average torque, etc. SynRM is a new motor topology but in electrical railway applications is not working yet. The mature topology in this application is Induction...
This work deals with the computation and analysis of the eddy current losses in fractional slot permanent magnet machines with solid back iron. Losses in the magnets and back iron are calculated for different combinations of slots and pole pairs by finite element simulations. From the comparison of the losses, how the losses change with respect to the combination is studied.
This paper analyses the eddy current losses induced in the permanent magnets and rotor back-iron which is made of a solid piece of mild steel. Time-stepping finite element method (FEM) is employed for simulation of fractional slot surface-mounted permanent magnet brushless machine having 12 slots/10 poles and concentrated windings when the magnets are isolated/non-isolated and magnetized/unmagnetized...
This work deals with flux weakening operation mode of surface permanent-magnet machines. Traditionally, the flux-weakening operation mode has been used to achieve speeds beyond the rated speed with the rated voltage. The same principle can be applied to reach torques higher than the rated one. In this work flux weakening in over-torque operation mode is explained. The stator resistance influence is...
Nowadays the majority of electric drives work at variable speeds. In this kind of drives the electrical machines are supplied by inverters which generate modulated voltages. It is widely known that these non sinusoidal voltages cause additional current harmonics dealing to higher iron losses than with sinusoidal voltages. The iron losses affect to several design constraints as the efficiency and the...
This work deals with the calculus of expressions for the complex winding factor from the star of slots directly obtained from the type of the fractional winding. Complex winding factor expressions have been obtained for Q slots and p pole pair combination and have been included in an analytical model based on spatial Fourier series. The model is achieved for a slotless stator and surface mounted permanent...
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