A Dataset of Electrical, Thermal, and Radial Shaft Force Measurements of a 1.1 kW Induction Motor with Static Rotor Eccentricity

A dataset is created of terminal voltages, phase currents, stator temperature and radial shaft forces of a rotor-eccentric 1.1 kW induction motor. The induction motor was modified to introduce static rotor eccentricity on the load-end of the motor in a controlled manner by radially displacing the load-side bearing. To achieve this, the motor bearing was externalised and an external flange construction allows a precise introduction of static rotor eccentricity.

By changing the flange plate on which the external bearing is mounted, three settings of static eccentricity are introduced: a centric rotor, a rotor with 25% air gap eccentricity at the load side, and a rotor with 50% air gap eccentricity at the load side. Note that while these displacements are present at the load side, the fan-side of the motor remains
centric. This means that the average rotor eccentricity is much lower than 25% and 50% of the air gap length. Additionally, the direction of the eccentricity is changed in increments of 90° by rotating the flange plate.

The temperature values can be used to infer the actual stator phase resistance as R = R_0 * (1 + k * (T - T_ref)), with the reference phase resistance R_0 = 3.99 ohm at the reference temperature 20°C, and the measured thermal coefficient k = 0.0043609.