Online motor resistance and inductance calculation

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lberezy
Posts: 2
Joined: 15 Dec 2015, 12:43
Location: Melbourne, Australia

Online motor resistance and inductance calculation

Postby lberezy » 06 Apr 2016, 05:33

This is probably more suited to the FOC subforum, but I thought I'd ask here.

Has there been any consideration for performing on-line stator resistance (and possibly inductance) calculations, such that the observer PI constants can be tuned on the fly as the motor heats/changes load? Perhaps it'd even be possible to achieve steady pole/zero calculation between the observer and outer control loops.
This is similar to what TI does with their InstaSpin technology for their FAST observer.
There's a paper here with some more information that you're probably very familiar with already too: http://www.ti.com/lit/an/sprt703/sprt703.pdf

jaroslavnovotny
Posts: 49
Joined: 16 Feb 2016, 13:10

Re: Online motor resistance and inductance calculation

Postby jaroslavnovotny » 06 Apr 2016, 07:28

I guess the bachelor thesis you linked to went well :) This is how it's done, not like the poor quality I see lately from universities..


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