When modeling a Permanent Magnet Synchronous Machine in SimPowerSystems, how can I calculate Ld(H), Lq(H), Ra, Tm/Imax ratio from machine ratings?

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Philippe Martin

This is not sufficient information to get the parameters you want

Shrinath Kannan

what are all the parameters do I require?

If I understand correctly, you would like to determine Ld, Lq, R and Tm/Im from the data you provide?

yes Martín. How

can I go about it?

As I said, it is not possible from the data you provided.

so, what are the additional data required?

Precisely the data you want... For instance there is no way to know Ld and Lq just from the rated voltage and power.

Get the parameters for a motor with similar rated power from a manufacturer or from a paper. For example see data for a surface-mounred PMSM and an interiror-magnet PMSM in the attached link (this is by no means the only paper where there are data).

I don't find any link Martin. please do check about that. If you can provide manufacturer datasheet if you've any, it would be great help.

Sorry, the link didn't attach properly. It is not a datasheet, but a paper with experiments we ran ourselves.

Article Sensorless position estimation and control of Permanent-Magn...

thank you Martin