how to calculate the dimensions of an interior permanent magnet motor given it’s torque speed profile?
December 1, 2009 in Engineering
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Sidewinder questioned:
Hi I’m a mechanical engineering adjust apprentice effective in the area of hybrid gripping vehicles. My information in gripping apparatus isn’t very excellent, as I’ve only recently ongoing compelling courses on them. We are tiresome to top a hybrid car in our academe and we have been able to calculate the optimum torque-speed profile for the vehicle but want to know how huge and heavy it would be to see if it would fit by the book in our car. Even if you grant correlations that give approximate answers, it would be fine, even if we would like privileged suitability. The torque speed profile looks like this – the peak torque T1 is obtained from 0 rpm to N1 rpm where the torque is continuous and potential increases. Form N1 rpm to the max. rpm the torque decreases in inverse family member to speed providing continuous potential. My question – are here correlation unfilled to calculate motor dimensions and consequence from T1, N1 and max rpm?
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Not the magic bullet pledge you’re looking for, but you may want to try discussion with the engineers here and at additional motor manufacturers, found by Googling “motor sizing”:
You’re in quest of a “formula” to calculate the size agreed a couple of rating numbers. I’m worried here is not one self who can pledge your question.
Your best bet is to friend some manufacturers or at smallest amount try out out websites and online catalogs to figure out the best motor for your application. You will find that here are a number of motors which may meet your requirements. You can brilliant the one with most favorable dimensions.
For estimating purposes, I reflect that you can start with the dimensions of a ordinary 3-phase induction motor with a horsepower rating copy to your continuous potential rating and a speed copy to your N1. The boost in RPM privileged than N1 must not chat the dimensions very much. I have looked at a technological paper that suggests that the maximum RPM for continuous potential surgical course of action of an IPM motor can be as much as 7.5 era N1.
You can find ordinary motor dimensions in the NEMA motor ordinary MG1. A condensed translation is unfilled as a free download:
I don’t reflect you will get a satisfactory pledge to this.