Lower current at higher speed?
Lower current at higher speed?
(OP)
In a vector controlled drive with speed regulation mode, is it possible that drive draws lower current in high speed than in low speed at steady state and with same load conditions?





RE: Lower current at higher speed?
RE: Lower current at higher speed?
The total current magnitude is the vector sum of the orthogonal direct and quadrature currents. I suppose that for very low torque levels, the reduction in direct current can more than compensate for the required increase in quadrature current. But given that the direct current below base speed is only about 10-15% of the maximum quadrature current, the torque levels required for this to happen would have to be very low indeed.
Curt Wilson
Delta Tau Data Systems
RE: Lower current at higher speed?
Curt Wilson
Delta Tau Data Systems
RE: Lower current at higher speed?
I think in the field for all practical purposes, both have said the same thing! No change!
Or am I missing something here?