Economic design of sleeve rotor induction motor using rotor ends

Abstract

<span>In this paper, the field analysis of the sleeve rotor induction motor (IM) is carried out taking the rotor ends into consideration. Here, the field system equations are derived using the cylindrical model with applying Maxwell's field equations. It is expected that, both starting and maximum torques will increase with taking the rotor ends than that without rotor ends. A simple model is used to establish the geometry of the rotor ends current density and to investigate the air gap flux density. The magnetic flux is assumed to remain radially constant through the very small air gap length between the sleeve and stator surfaces. Variation of the field in the radial direction is ignored and the skin effect in the axial direction is considered. The axial distributions of the air gap flux density, the sleeve current density components and the force density have been determined. The motor performance is carried out taking into account the effects of the rotor ends on the starting and normal operations. The sleeve rotor resistance and leakage reactance have been obtained in terms of the cylindrical geometry of the machine. These equivalent circuit parameters have been calculated and plotted as functions of the motor speed with and without the rotor ends.</span>

Analysis and comparison of single-phase induction motor operation from single- and two-phase power sources using MATLAB simulation results

“…The parameters of the machine, TPIM and SPIMCSCR, used in the steady-state analysis are taken from reference [17]- [25] and a single phase 120 V, 60 Hz, foure-pole two phase motor has the following equivalent circuit parameters: X1m=2.0 Ω, R1m=1.5 Ω , Rr'=1.5 Ω, Xm=48 Ω , X1a=2.0 Ω, R1a=1.5 Ω, Xr'=1.5 Ω, C=30 µF, a=1…”

“…The second method, the two winding are quite similar and The voltage applied on the two-phase is shifted by angle ninety electric degrees e.g. Vm = V, Va = V90 o , this case equivalent circuit is illustrated in Figure 2 The currents in the main and the auxiliary windings are as follows [14]- [17].…”

“…By solving the (5a) and (5b) we can be to obtain Im and Ia . the difference between the backward torque and the forward torque is known as the torque developed [14]- [17].…”

“…The induction motors have two stator windings in space quadrature. As a result of the unbalanced voltage applied to the two-phase motor, the currents in the two windings are unbalanced and the equation of rotating mmf is [14]- [17].…”

Finite element method based design and performance analysis of universal motor for agro applications

“…In recent years many researchers have done their practices to enhance the performance of universal motor present in the literature. The author economically designed motor for feasible applications using rotor ends by changing the magnetic flux density and material, to determine eddy current and loss analysis, there is enhancement in performance [6]- [9]. The author compared the performance of universal motor and BLDC motor drive using simulink for the grinder and mixer [10].…”