A program to recognize and reward our most engaged community members
Hi everyone,
I would like to simulate the short-circuit of a brushless machine and obtain the maximum d-axis current to run demagnetization.
I saw a tutorial but I can't find it anywhere.
Hello Ciro;
you can make a 3 phases short circuit as described bellow:
Please take care to make a [Valid] function to modify the resistance value from 1E-4 to 1E4 when you switch on at time t (for instance here t=0.2s).
Then you can expect a current on the coils like bellow:
Which tutorial you are talking about ?
Regards
I forgot to ask you which short circuit you want to have, bi phase or three phase ?
Thank you Farid.
Yes I want to model the three-phase short circuit.
If I have a brushless motor with imposed currents with current generators, do I have to use the resistance as well?
You are wellcome !
It is better to use voltage sources, otherwise you to think how to insulate the current sources from the motor coils. I mean in this case instead of using resistances as shown previously, you have to use switchs in order to connect the current sources to another set of resistance for instance. This is to avoid the current sources to continue to supply the short circuit.
You are wellcome ! It is better to use voltage sources, otherwise you to think how to insulate the current sources from the motor coils. I mean in this case instead of using resistances as shown previously, you have to use switchs in order to connect the current sources to another set of resistance for instance. This is to avoid the current sources to continue to supply the short circuit. Regards
Would it be possible, as a workaround, to impose a zero current at the current sources when the fault happens?
Yes this is something you can try of course.
