Back-EMF of PMSM

Hi everyone,

I'm writing a thesis about PMSM (AC Permanent Magent motor ), in which I should control the regenerative energy during it's braking. I have been wodering for a week, how the Back-EMF of PMSM can be simulated in Simulink, but still can not find a solution. Can someone give me some advices for this matter. I'm very grateful for your help.

Answer 1

[KL]

If you're using Permanent Magnet Machine from Simscape library, I think, it has backemf as output signal. If you're building the machine model by yourself, you need to calculate it based on the rotor position and machine parameters

http://uk.mathworks.com/help/physmod/sps/powersys/ref/permanentmagnetsynchronousmachine.html

[hucy]

Hi Kandasamy,

Thank you for your answer. You are right, if I use the option trapezoidal Back-EMF in PMSM parameter block, i can get the Back-EMF. Problem here is, when I choose option sinusoidal Bback-EMF, I can only get the Hall-Sinals from the output of PMSM. Anyway, thanks again for your answer.

Best regards,

[ENGR SHEHROZ HASHIM MUHAMMAD HASHIM]

i need back emf based pmsm simulink model [e-mail]

[ENGR SHEHROZ HASHIM MUHAMMAD HASHIM]

Did you get your answer? I have also faced this question! I really appreciate it if you can help me with this issue

Answer 2

[Shang Ming-Zhe]

Brother,I think you can find the relationships in the Back-EMF in PMSM and its stator phase current then get the waveform of PMSM's Back-EMF.

[hucy]

Thanks very much for your advice. I will use your tipp for the next attempt.

Answer 3

[shoeib heydari]

Did you get your answer? I have also faced this question! I really appreciate it if you can help me with this issue.