Monitor temperature individually for all rotor poles to get early detection of damage / wear.
Reduce downtime caused by damage and corrective maintenance. Improve ability to do preventive maintenance.
Inputs
Quality
How
Rotor temperature
Phase
Resolution up to 2000Hz20-200Hz
Pressure sensor 4-20mA
Results
Plot 1: Mean peak temperature for all rotor poles
Plot 2: The 2 poles (pole number) with largest deviation in peak temperature (in each direction) from mean.
(Plot 3-x: Peak temperature for each rotor pole)
Increased temperature for a rotor pole can indicate breakdown of pole winding insulation. Increased pole temperature can affect material expansion for the different parts of the rotor pole that leads to an increase in material stress and possibly deformation.
The phase sensor keeps track of which rotor pole is in front of the temperature sensor at any given time. The temperature sensor is mounted in a stator ventilation hole where the sensor tip is flush with the inside of the stator.
Measured rotor pole temperature can be based on a time interval or a number of revolutions.
