(Pdf) electromagnetic field analysis of 3d structure of axial-flux solid-rotor induction motor gas in dogs stomach


Using a dual air-gap structure in a disc-type motor is an effective solution to eliminate undesirable axial force between stator and rotor, by which higher power density can be achieved, too. Furthermore, some of the performance characteristics such as pulsating torque may be improved greatly by adjusting the existing extra selective design parameters in a dual air-gap motor. Accordingly, in this study gasset y ortega filosofia, a widespread design consideration is carried out on rotor skewing arrangements of a dual rotor (DR) axial flux induction motor with the aim of pulsating torque reduction ortega y gasset. The studied scenarios include when the slots of both rotors are skewed exactly similar with different skew angles, the slots of both rotors are skewed similarly but in the opposite directions and the slots of both rotors are not skewed but one rotor is mounted on the shaft by some shift angle relative to the other. The last one is introduced as an alternative to skewed rotors, which is easily z gas el salvador precios executable in small and large size motors with DR topology. Moreover, an algorithm is proposed to determine the appropriate shift angle. Three-dimensional time stepping finite element analysis is employed electricity merit badge requirements in all cases for verification.

This paper proposes a novel dual stator solid rotor axial flux induction motor (DSSRAFIM) for a low-cost flywheel energy storage system. To simplify the analysis of its 3-D electromagnetic field distribution (EFD), a novel multi-slice and multi-layer method is applied. By this analytical method, DSSRAFIM is equivalent to a finite set of double primary steel secondary linear power per kwh induction motors (DSSLIMs), and the steel secondary in each DSSLIM is divided into a finite set of layers with equal height. The EFD in each layer is obtained by solving Maxwell’s equations. The EFD calculated by this novel analytical method is in good agreement with those analyzed by the finite-element method (FEM). Compared with the FEM, this novel analytical method is time saving, resulting in that it is suitable electricity journal for the optimized design. According to the EFD in DSSRAFIM, an equivalent circuit model (ECM) of DSSRAFIM is derived, which is an effective approach to predict the performance. The electromagnetic torque, efficiency, and power factor of a 5 kW, 7100 r/min prototype calculated by the ECM, FEM, and experimental test verify the validity of the ECM.

The paper presents the results of an experimental and theoretical investigation of a disc-geometry homopolar synchronous machine with field excitation on the primary side. The unlaminated thermal electricity how it works mild-steel rotor contained no windings and was brushless. The prototype machine produced approximately 75 kW of mechanical output at 3000 rev/min, with a product of power factor and efficiency greater than 0.7. The construction of the stator core was unusual and incorporated both laminated and unlaminated gas nozzle icon portions. The magnetic circuit was also arranged to minimise the axial force between the stator and rotor. A novel rotor design which achieved a reduced quadrature-axis reactance is shown experimentally to be superior to the conventional homopolar rotor. A three-dimensional magnetostatic computer program `GFUN¿ is shown to predict closely the flux densities prevailing q gastrobar leblon in the machine. The quadrature-axis reactances calculated from these results also agreed well with measurements. An analytical method of calculating the axial force in the machine is validated by comparison with experimental data. The method uses the principle of Maxwell’s stresses, and is based on the two-axis model of the machine. Prediction of the steady-state synchronous performance of the electricity merit badge pamphlet machine is also shown to be possible, using the two-axis model, provided that the assumptions implicit in that model are valid for the operating conditions of the machine. However, it was found that the output of the machine could be improved by a substantial amount by producing a degree of saturation in the magnetic circuit by means of the field winding. Under these conditions, the output of the machine exceeded predictions.

A method for the analysis of induction motors is presented. The analysis is based on the combined solution of the magnetic field gas 101 equations and the circuit equations of the windings. The equations are discretized by the finite element method. The magnetic field mp electricity bill payment online bhopal is assumed to be two-dimensional. The general time-dependence of the field and the motion of the rotor are modelled correctly in a step-by-step solution. The amount of computation is reduced significantly if the time-dependence is assumed to be sinusoidal and phasor quantities are used in the solution. The method is applied to the calculation of a cage rotor motor and of a solid rotor motor. The sinusoidal approximation gives z gas cd juarez telefono good results in the computation of steady-stage locked-rotor quantities, but it does not model the motion of the rotor properly. The step-by-step method is used for computing machine quantities in steady and transient states. For instance the operation of the solid rotor motor supplied by a static frequency converter is simulated. The results obtained by the method agree well with the measured ones.