PMSM (simscape) No load test

Hey guys,

I am trying to resolve my no load data out of my in simscape designed PMSM.

With load it is no problem and the motor is working properly. I am using a ideal torque source for my load simulation.

But when I type in 0 the motor is not working properly.

So how can I do a no load test with the PMSM.

A open circuit is not the right thing at this place because it uses high (inf) resistances and I am not able to get my no load current.

Maybe one of u tried this before... I hope so.

Best regards and thanks in advance.

[Shubham Khatri]

Hello, Can you please share what exactly you are trying ?

[Federico Manfrin]

I think you're using the PMSM as voltage/current generator, right?

[Mohammad]

Could you find the right answer for how to get torque in PMSM in no load?

Answer 1

[Joel Van Sickel]

If you are using specialized power systems, it can be very hard to model a no-load test without very small time steps. It might make more sense to use the simscape components (blue components) to model this. You can also use a large snubber resistor to get "almost" no load current. Esentially, the smaller your time step, or the lower your resistance, the easier it will be to get a value.