Abstract

Reducing the size and cost and increasing the energy efficiency and optimal loading of the motor have a direct impact on the temperature rise of the motor. Motor needs to be operated such that its temperature rise is within the prescribed safe limit. Therefore, easy and precise temperature rise determination of motor becomes critical. Thermal models of motor are widely used for temperature determination. In this paper, a modified thermal model is proposed using which the temperature rise of induction motor fed from raw supply and inverter-fed supply is determined. The parameters of the thermal model are also determined.

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