An Analytical Approach for Determining Torque-Speed Curve of Induction Motor Including Deep-Bar Effects Using Manufacturer Data

Torque-speed curves are an essential characteristic of induction motors. Often, there is a need for a quick and straightforward determination of these curves. Typically, an analytical approach is employed to establish the relationship between motor speed and torque. Such an approach has previously been introduced for single-cage induction motor in existing literature. Hence, in this paper, the analytical approach is extended to account for deep-bar or skin effects. The torque curves derived from the proposed method are then compared to those obtained from the field measurement data reported in the published data. Good agreements can be observed.