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How low is "low" inductance motors?

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shaman
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How low is "low" inductance motors?

I see the term low inductance being thrown around here and in the industry. What value of inductance is considered low?

Also I saw that the current filter being switched in and out by the VESC 6 plus is clamied to help with low inductance motor control. At what level of inductance does this current filter make a sigifiy difference?

TechAUmNu
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I personally would consider low as anything below about 1.5uH at that point its looking a lot more like a short than a motor.

frank
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yes

shaman
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I appreciate the answers @TechAUmNu and @frank!

frank
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We drove 0.7uH motors with the VESC 75/300. That's almost a short. 

perpetum
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Hi Frank,

I just posted a similar question in the forum.  My motor is measured 8uH and I was concerned it is too low but seems you beat that number by far.  Did you have to do any "tricks"?  For example, increase the PWM frequency?  I am using a Flipsky 4.2 and wanted to make sure before I blow the FETs!

Thanks,

Perpetum

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