Other Parts Discussed in Thread: TMDSHVMTRINSPIN, C2000WARE
Hi TI team,
I'm debugging the motor control with TMDSHVMTRINSPIN in C2000Ware_MotorControl_SDK_4_00_00_00. My motor's rated parameters are: 320V, 38A, 3000rmps, 200Hz. Now I'm trying to run the motor with lab7,before that I have run lab4/5 and got the motor parameters. However, I have met some questions based on the test results below. Thanks for your reply in advance!
- There is a big speed difference between the reference speed (calculated by 60f/P) and real tested speed. For example: The reference freq is 190Hz (2850rpm is expected), but we tested the real speed is about 2300rpm. The DC voltage given is 700V. Is that related to the EST or close loop PI parameters?
- The counter electromotive force will be generated and given to inverter even when we want to disable the PWMs. Is there any risk about this condition? Should we add relay between motor and inverter to disconnect them when we disable the PWMs.