Ok we can look from other dimentions.
Lets exam the simple Serial Resistor, Inductor and DC voltage circuits.(This is not real stepper motor model)
I = (V/R)(1-exp(-Rt/L)) current wave form equations. (Eq.1) (State 1)
Imax = V/R
Imax dont changes If you increase the value of V and R 2 times.
Imax = 2V/2R
but current waveform changes
I = Imax*(1-exp(-2Rt/L)) (Eq.2) (State 2)
Eq.2 Current waveform change faster than eq.1
You can see the second graphics area bigger than firs area.
That mean average current of second equations (state 2) higher than state 1.
Now we can said If you increase the voltage and Resistors same ratio
Average current increase, torque and speed increase power lost increase. (These are proportional by current)
Bulent UNALMIS |