we had a little more success making something function in the abc coordinates instead of using the park transform but then we end up with a lot of trouble with a huge long expression for torque and we're not certain whether we should use inductances of Ls or 3/2*Ls, and whether the coupling should be -0.5 or -1/3
-F

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Is anyone here good at physical modelling, because we're having a heck of a time getting a working model of a PMSM in LTspice

would be until monday before we can work on it much more but would appreciate tips on avoiding convergence issues, understanding what the correct numbers to put in off a real motor's datasheet are, and figuring out what the hell is going on that sometimes the model just decides every node is at 1e+26 volts
-F

I at last reached the end of my 2021 A-to-Z, with Zorn's Lemma:

nebusresearch.wordpress.com/20

I can't say what I'll do next, except it's probably sharing Pi Day themed comic strips.

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I did finally resume the Little 2021 Mathematics A-to-Z, after a pause necessitated by life being all too much. For the third-to-last letter, it's another T, Tangent Space:

nebusresearch.wordpress.com/20

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Happy new year! If you're the kind of person that other people ask "is there anything mathematical about this number?", you might find this useful: a 78-page collection of maths facts about 2022, by Inder J Taneja
zenodo.org/record/5805264#.YdA

Pondering how my mother could e-mail me a screenshot of the picture on her phone, instead of just the picture she wanted me to see.

Emblematic of how much I'm falling behind on things: here's the latest essay in my Little 2021 Mathematics A-to-Z, for a third letter A, Atlas:

nebusresearch.wordpress.com/20

The project's on a hiatus right now while I deal with ... just ... you know ... *everything*.

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I'm falling behind on myself again. For the letter 'S', and finishing off my spelling of the word 'Mathematics', it's Subtraction:

nebusresearch.wordpress.com/20

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reverse a string? you mean... put it back... into the keyboard?

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