Motor Electrical parameters Rs and Ls

[JackyCheung]

Posted on October 21, 2014 at 02:19

Gigi:

       I have a question, measured in workbench Motor Electrical parameters Rs and Ls. I see ST data is used RLC meter measurement frequency at 100 Hz, but the motor is running in the PWM 16K frequency, whether I used RLC meter frequency measurement of 10K or 100Hz? Because both the difference between the value of high. And RS is using a multimeter to measure, or with the corresponding RLC frequency?         Best Regards           Jacky

[Gigi]

Posted on October 22, 2014 at 09:04

Ciao Jacky

The point is that you need to measure the Ls at the electrical frequency of the motor (that usually is in the range of undreds of Hz) and not the Ls at the PWM frequency. Ciao Gigi

[JackyCheung]

Posted on October 23, 2014 at 06:34 Thanks you very much!