Unit Conversion: How to Find Volts/kRPM for Motor Modeling with 245 RPM/Kv Value

[Blues_MTA]

For a motor modeling project I am trying to find a value that is measured in Volts/kRPM (Voltage constant) , in the motor specs that I am given i have a value in RPM/Kv,

If the value for RPM/Kv given is 245, how can i find Volts/KRPM, or is that even possible

Thanks!

 

[rock.freak667]

I assume K means 10³

so 245 rpm/kV = 0.245 rpm/V


So now dividing by 1000, 0.245(10^-3)krpm/V.

Just invert now to get the units of V/krpm.

 

[Blues_MTA]

So, it would be 1/0.245(10^-3)?

That comes to 408, which is a ridiculously high voltage constant, or at least from what I've seen anyway

 

[cjl]

My guess is that your second value is in kRPM/V, not RPM/kV. Very few motors run on thousands of volts, so RPM/kV wouldn't make sense as a unit.