An analytical method which predicts the temperature rise of the rotor and stator packets, and the associated endwindings of an induction motor is presented. The method also enables the prediction of the temperature rise of the coolant at discrete points in its flow path through the motor. © 1988 Springer-Verlag.

Biswajit Banerjee

V. M.K. Sastri

Electric motors

Temperature distribution

COOLANT TEMPERATURE RISE

NETWORK ANALOGY

ROTOR PACKETS

STATOR PACKETS

Electric machinery

IIT Madras is a public technical and research university located in Chennai, Tamil Nadu. Founded in 1959, it is recognised as an Institute of National Importance.

IIT Madras has been ranked as the top engineering institute in India for four years in a row by the National Institutional Ranking Framework of the MHRD

It currently offers undergraduate, postgraduate and research degrees across 16 disciplines in Engineering, Sciences, Humanities and Management. About 596 faculty belonging to science and engineering departments and centres of the Institute are engaged in teaching, research and industrial consultancy.

IIT Madras

Digital solution of temperature distribution in an electrical machine using network analogy

Wäarme- und Stoffübertragung

Experimental investigations are carried out for the determination of transient heat transfer coefficients between parallel co-rotating and concentrically stationary disks with internal heat generation. The experimental model simulates a typical induction motor with unequal losses in the stator and rotor at the start-up condition. The data collected cover a range of Taylor numbers for various heat inputs. Quantitative assessment is made for the increase in heat transfer with speed of rotation under free convective ambient conditions. Temperatures along the axial, radial and tangential directions are measured. Unsteady heat transfer coefficients to the ambient air are evaluated in the radially diverging section. The results of the corresponding R-C network are obtained on a digital computer. The predicted values of temperatures at the corresponding nodal points are compared with the measured values and found to be in good agreement. The results are potentially very useful in the thermal design of electrical machines, more specifically, radially ventilated induction motors. © 1990.

Journal	Data powered by TypesetWäarme- und Stoffübertragung
Publisher	Data powered by TypesetSpringer-Verlag
ISSN	00429929
Open Access	No