Hello
I am running my AC induction motor using HVACI_Sensorless_F2833x project.
I have two questions to ask
1) When I run the motor without load the rotor speed given by ACI_SE(Speed estimation macro) is true. I have verified this using tachometer.
but when the load is applied to motor the estimated speed given by macro is inappropriate. The estimated speed is not same as actual rotor speed.
Instead of giving actual rotor speed the estimated speed is same as the estimated speed when motor running without load.
example:
Case 1: Motor is running without load (Speed reference = 500 RPM)
- estimated speed = actual rotor speed (Verified using tachometer) = 500 RPM
Case 2: Motor is running with load
- estimated speed = 500 RPM ≠ actual rotor speed (0 < rotor speed < 500 RPM)
Is this right scenario or estimated should be the actual rotor speed?
What can be Cause for this scenario?
2) The Elec theta we get from encoder is same as estimated theta flux? Are both the same thing or two different quantities?
I have this question because we are not using Elec theta from encoder in feedback for park/Inverse park input.
Please address my issue/doubts with technical elaboration.
Thanks in advance.
Regards.