Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.

I want to convert my Voltage Constant (Kv) of V/rad/s to V/Krpm, how do I do that?

April 26, 2017convert kV RAD

0

Posted

I want to convert my Voltage Constant (Kv) of V/rad/s to V/Krpm, how do I do that?

1 Answer

1

Posted

A. Most motors are rated in V/Krpm, Volts per 1000 rpm, so some calculation is needed to arrive at these units when you are given V/rad/s, Volts per Radians per second. If for example, the motor has a 0.49V/rad/sec, we need to first convert the radians to degrees. So we know that there is approximately 6.28 radians per revolution, we can say the Kv is 0.49V/(1/6.28 revolutions)/sec, or 0.49V/0.159revs/sec. Converting to rpm, we multiply the denominator by 60 results in 0.49V/9.58rpm. To get Krpm, we take 1000 and divide it by 9.58 rpm, which will be 104.4, and multiply this result times the numerator and denominator to get 51.15V/Krpm. You can now compare the voltage constants with other motors that use the same units.