Tool/software: Code Composer Studio
Greetings,
I've designed a custom motor controller which runs great, and I've been using Lab 4 for current-mode control with great success.
Today, I switched over to a lower Kv motor (to draw less current to reach my max RPM), and of course as expected I've hit the "RPM barrier" where I need to implement either field weakening or over-modulation.
I currently have my USER_MAX_VS_MAG_PU set as 0.5, but then I noticed in the MOTOR_Vars_INIT of main.h, the default value of gMotorVars.VsRef is set as _IQ(0.8 * USER_MAX_VS_MAG_PU).
Can you explain the inclusion of this 0.8 scale factor? Is it arbitrary just to leave a "safety margin", or is this a necessary value? Is it catastrophic for me to increase this to 1.0?
Thanks!
Chris
