SYNTHESIS OF HIGH SPEED HOMOPOLAR ALTERNATORS AND THEORY OF SOLID ROTOR ELECTRICAL MACHINES. PHASE DD, PART III. THEORY OF SOLID ROTOR MACHINES, APPROXIMATE ANALYSIS.
COLORADO UNIV BOULDER DEPT OF ELECTRICAL ENGINEERING
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The performance characteristics of high speed, aerospace induction motors is analyzed. In order to obtain an explicit solution, the magnetic characteristic is represented as a straight line whose slope is a tangent to the saturated region of the real characteristic. The line intersects the B axis so that there is an infinite permeability at zero magnetic intensity. Formulae are derived for the penetration of the magnetic flux in the nonlinear rotor iron, and the magnetic densities. The currents are then estimated in the rotor. From these the torque at a given slip is calculated. The method is checked with experimental results. These calculations are based on measured airgap flux densities and not on calculated ones. Under these conditions theoretical and experimental results agree within seventeen per cent. Author
- Electricity and Magnetism