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JackyCheung
JackyCheung
Associate III
October 21, 2014
Question

Motor Electrical parameters Rs and Ls

  • October 21, 2014
  • 2 replies
  • 1308 views
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
This topic has been closed for replies.

2 replies

Gigi
Gigi
ST Employee
October 22, 2014
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
JackyCheungAuthor
Associate III
October 23, 2014
Posted on October 23, 2014 at 06:34

Thanks you very much!

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