Synthesis of Induction Motor Designs on a Digital Computer

Abstract

It is the engineer, then, who indicates the performance desired and the magnetic cores on which he desires the winding to be developed. The computer develops the most satisfactory winding that is possible within these prescribed limitations, and reports the predicted performance of the machine as predicted by the design analysis method. It also gives the winding which is needed in the machine. Considerable flexibility is allowed as indicated. Fig. 5 shows the computer room where the procedures discussed in this paper are in daily use. In addition, many mechanical design calculations are performed such as shaft and bearing loading, shaft deflections, critical speeds, commutator design. Much d-c design work is done here. This computer is the same Alwac III described in the author's earlier paper1 except for the addition of the high-speed papertape-handling console and off-line flexowriter which comes close to tripling the potential output of the computer. Fig. 6 shows additional engineering data computed on the example. These consist of half-voltage locked-rotor torque and amperes, performance over a range of loads to 150% and a speedtorque curve which takes into account the effect of saturation of the leakage flux paths.