Induction Motors – Operation from 50/60 Hz Supply
1. Introduction
This chapter is concerned with how the induction motor behaves when connected to a supply of constant voltage and frequency. Despite the onward march of the inverter-fed motor, this remains the most widely used and important mode of operation, the motor running directly connected to a utility supply.
The key operating characteristics are considered, and we look at how these can be modified to meet the needs of some applications through detailed design. The limits of operation are investigated for the induction machine operating as both a motor and a generator. Methods of speed control which are not dependent on changing the frequency of the stator supply are also explored. ...
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