Double and Triple Squirrel Cages for Polyphase Induction Motors [includes discussion]
- 1 January 1953
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Transactions of the American Institute of Electrical Engineers. Part III: Power Apparatus and Systems
- Vol. 72 (2) , 637-645
- https://doi.org/10.1109/aieepas.1953.4498680
Abstract
This paper presents a lumped circuit method of calculating the performance of multiple squirrel-cage motors. For convenience, the squirrel cage is represented by three parallel circuits, in place of the two circuits conventionally employed. In this way, allowance is made for eddy currents within the separate bars, as well as the division of currents between bars, with a minimum of mathematical analysis. The method permits convenient allowance for saturation effects, which change the reactances of the various circuit elements over the speed and current range of the motor. As an example, the method is applied to calculating the performance of a simple rectangular bar. The results are shown to compare favorably with those given by the conventional skin effect theory. As another example, the method is used to calculate the speed torque and current curves of a 4-pole 75-horsepower motor, with a cast aluminum double squirrel-cage winding.Keywords
This publication has 5 references indexed in Scilit:
- Report on Double-Cage Rotor Symposium [includes discussion]Transactions of the American Institute of Electrical Engineers. Part III: Power Apparatus and Systems, 1953
- Circuit Analysis Method for Determination of A-C Impedances of Machine ConductorsTransactions of the American Institute of Electrical Engineers, 1951
- A Contribution to the Theory of the Deep-Bar Induction MotorTransactions of the American Institute of Electrical Engineers, 1951
- Network analysis of A-C machine conductorsTransactions of the American Institute of Electrical Engineers, 1951
- Heat Losses in the Conductors of Alternating-Current MachinesTransactions of the American Institute of Electrical Engineers, 1921