sensorless control

reman130488 · ‎2010-05-12

Posted on May 12, 2010 at 21:07

sensorless control

Dino COSTANZO · ‎2011-05-17

Posted on May 17, 2011 at 10:20

Hello,

first of all, parameter file MC_PMSM_motor_param.h has different contents according to the MC library version (1.0 or 2.0). In particular, in version 1.0 (which I understand is the one you're using), it specifies:

1) motor basic parameters (minimum set to carry out FOC);

2) motor parameters for sensorless FOC;

3) parameters for flux weakening operations (here, in v1.0, the spreadsheet is needed).

Please, refer to the MC library UM @ sections 4.6.1, 4.6.2, 4.6.3 respectively, for more information about how to deal with each specific entry.

The voltage constant Ke is sometimes reported in the datasheet of the motor, otherwise it should be calculated: get your motor running (even turn it by hand, if feasible), unplug it from power source (if used), measure the voltage it produces and the related electrical speed, compute Ke (Volts/kRPM, phase to phase).

Best regards,

Dino

reman130488 · ‎2011-05-17

Posted on May 17, 2011 at 10:20

thanks for your info Mr. Dino

in my motor's datasheet, only know back-efm constant.

whether the same thing with Ke?

bille.stello · ‎2011-05-17

Posted on May 17, 2011 at 10:20

Yes, it is but be aware that in our FOGUI, Ke should be nmeasured in line-to-line Volt rms over krpm

Regards,

Billino