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This paper proposes the optimal design process to effectively reduce the cogging torque considering the torque and efficiency in constant torque region and constant power region by maximum torque control in spoke type interior permanent magnet synchronous motor (IPMSM). For an increase in torque and efficiency in constant power region, the saliency ratio is increased more than initial model. The two...
In recent years, interior permanent magnet synchronous motor (IPMSM) with concentrated windings has been interested as a smaller and higher-efficient motor than that with distributed windings. In this paper we have been analyzed the load characteristics of the eighteen IPMSM models with the various pole-slot combinations and the pole-arc angles using finite element method. The analyzed characteristics...
This paper dealt with the design and analysis of the outer rotor type interior permanent magnet synchronous motor (IPMSM) for an electric bicycle. To reduce cogging torque in IPMSM, we designed the optimal shapes of rotor core and magnet. Using the finite element method (FEM), performances of the proposed motor were analyzed and compared. The prototype motor was made for verifying the actual performance...
Generally, cogging torque derives from motor using permanent magnet such as interior permanent magnet synchronous motor (IPMSM) and surface permanent magnet synchronous motor (SPMSM). The cogging torque works for smoothness in rotation of the rotor, but it is a kind of root cause mechanical vibration and acoustic noise. Consequently, cogging torque must be reduced by all manner of means. There are...
This paper describes the better shape design of the permanent magnet to improve the efficiency in the outer rotor type of IPMSM. Using the finite element method, characteristics of the modified motors are analyzed and compared with those of the basic motor. As a result, we have found the better shape design of the permanent magnet.
This paper investigates an interior permanent magnet synchronous motor with 8 rotor poles and nonuniform (6+6) stator slots and concentrated windings fed with trapezoidal currents, in order to maximize the pole flux, while keeping a minimal level of cogging torque simultaneously. Dimensioning procedure of the proposed solution was done based on experience and it was validated using Finite Element...
In these days, the choice of the right motor topology for industrial applications and household electrical appliances is a challenging quest. Since universal motors can not meet the ever-growing standards of electrical equipment design, new generations of electric machines compete to conquer this market. For industrial applications and home appliances, PMSMs seem to be the most fitted solution, especially...
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