An investigation of dual stator winding induction machines

The simulation model of the dual stator winding induction machine with constant air gap in which the space harmonics are accounted for has been presented. The winding function method is used to calculate the inductances. Computer simulation results of the no-load starting transient were presented with the response of the machine for a change in the load torque. A novel approach has been proposed to generate the air gap flux density. Some measurements of no-load and full load flux densities confirm the computer simulation and FEA results.; An analysis method of a dual stator winding induction machine with a squirrel-cage rotor under static, dynamic and mixed rotor eccentricity conditions has been presented. A circuit simulation model has been set forth which accounts for rotor static, dynamic and mixed eccentricities. Computer simulation results for the machine are given to demonstrate the consequences of the rotor eccentricities.; Based on concepts the rotating-field and coupling magnetic circuit concepts, the field analysis method is applied to understand the operation of the dual stator winding squirrel-cage induction machine having two stator windings with dissimilar pole numbers.; The air-gap flux linkage of a dual stator winding squirrel cage induction machine has been explored using analytic, computer simulation, Finite Elements Analysis and some experimental results. Computer simulation results are validated by some experimental results.; The use of a dual stator winding squirrel-cage induction machine for generating do power using series or parallel connected ac-dc PWM rectifiers have been presented. The operating principles and constraints are explored using the steady-state model of machine and converter considering magnetizing flux saturation effects. Regulation of the do voltage are set forth and confirmed to be effective by computer simulation and experimental results.; A speed sensorless control scheme based on full-order flux observer using MRAS technique has been analyzed. The principles of input-output linearization have been applied to the control system design. The complete design methods for the controllers are presented. The proposed sensorless design scheme is validated by computer simulation results for operations in the motoring and generating modes.