Method and device for measuring the temperature of a brushless d-c motor
 A method for determining the temperature of a brushless d-c motor with a permanent-magnet rotor and an at least three-phase winding with electronic commutation including determining the curve of an EMF induced in a winding during one phase wherein the winding is in currentless condition, and evaluating the temperature therefrom. 
Heidelberger Druckmaschinen AG
H G H H
H02P G01K H02P H02H
inventional inventional inventional inventional
Helmut Jurgen
Meyer Seeberger