A method that involves determining the maximum operating speed of an electric motor under varying torque conditions, specifically at speeds surpassing its rated speed. Initially, the motor is operated at its highest speed across different torque values, establishing a data set of real measurement points. These points illustrate the relationship between the maximum motor speed and the applied torque. A coefficient (COF), ranging from 0 to 1 and dependent on motor characteristics, is selected. Two curves are then established: the first for lower maximum speeds, represented byΩref=COFPnomTmeas,and the second for torques below a defined limit torque Tlim expressed asΩref=COFPnomf(Tmeas),where ƒ is a polynomial function derived from the measurement points. The appropriate curve is then used to ascertain the maximum motor speed for a given torque, based on whether the torque is greater or lesser than Tlim.
METHOD OF DETERMINING A MAXIMUM OPERATING SPEED OF AN ELECTRIC MOTOR
26.06.2025
Patent
Elektronische Ressource
Englisch
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