Hello ,
I am trying to test out field weakening control of pmsm in the s32k144 evb. I modified the closed loop pmsm foc model by adding a pmsm field weakening controller block and tested and logged the values in freemaster. I was able to reach around 3200-3400 rpm with a 12v dc supply. I want to know what is the base speed of the linix motor attached with the s32k144 evb.
I also tested it out on a simulink example file provided by matlab. But there i am not able to match the data obtained from the freemaster. Is there anything i should change in the way i implement field weakening?.
I have added both the models for your ref.
nxp_cl_fw is the model based design model and the mcb pmsm foc is the simulation model provided by mathworks staff in which i added a pmsm fw controller.In this mathworks model i am able get around 4000 rpm (which is mentioned Nmax but when i increase the Nmax to 6000 and increase the current limits , I am not able to get more than 4000 rpm. For the motor used in the simul (linix) base speed is mentioned as 3296 rpm)
nxp_sim_fw is the model i modified from the MTPA field weakening example of the c2000 . Using this model i could reach upto 4700 rpm ( same motor and inverter parameters as the prev model) . i want to verify whether this approach is right
It would be helpful if you guys can compare both the models and see where i am going wrong. Thank you @stefanvlad
