Reading your post.: https://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1271711/mcf8315a-speed-control-issue
Try to understand the max Motor Speed vs Back EMF.
We have a motor, the back EMF is 12Vrms/KRPM. and the number of poles is 4. DClink is 270V. The max speed would be 12990 RPM. However, the OEM said, the motor can run to 16000RPM without field weakening.
Where is the problem for this calcuation?
DCLINK | 270 | V |
SQRT(3) | 1.732050808 | |
Back EMF (RMS) | 12 | Vrms/KRPM |
Back EMF (RMS) | 0.012 | Vrms/RPM |
Back EMF (RMS) | 360 | mV/HZ |
Max E Speed | 433 | HZ |
Max Speed RPM | 12990 | RPM |