Loss Measurement of a Squirrel Cage Induction Motor

Student: Carol Li Ling, Lim

Supervisor: Geoffrey Walker

Category: Engineering Thesis Project - Power

This thesis investigates on measuring the losses of the squirrel cage induction motor drive. This experiment will be tested using a 5.5 KW, 415V, 10.5A, 3-Phase, 4-Pole, 50 Hz, at a rated speed: Ns of 1430rpm induction motor. This paper would emphasis on measurements of the losses and efficiencies of the induction motor. In terms of experimenting, the no load equivalent circuit parameters would be used. All calculations and readings measured for this thesis are placed into spreadsheets.

There is a significant improvement in efficiency when using copper as compared to aluminium in squirrel cages induction motors. Performance criteria such as current, power factor and torques may change. Measurement of losses will be carried out on the squirrel cage induction motor. These losses would come from Friction and Windage, Stator and Rotor Copper and Iron losses.

This paper will briefly discuss about various ways that can be used to reduce losses such as Friction and Windage, Iron, Total and Copper Stator and Rotor losses. Graphs and histograms will be plotted to show the efficiencies and losses of the motor. Discussions will also be made to compare the different efficiencies and losses. Readings and measurements can be found in the report itself and in Appendixes 2.

Thesis Document (PDF)

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