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TMDSCNCD280025C: Universal Motor Control Project on HV Kit with Own Motor

Part Number: TMDSCNCD280025C
Other Parts Discussed in Thread: TMDSADAP180TO100,

I am currently running our 1 HP motor on TI’s HV kit with the use of Universal Motor Control Project. We are facing one problem in Level 3 build.

Our observations are as follows:

  1. Motor is running at reference speed in open loop
  2. The estimated /feedback speed is not stable. The value of actual speed is fluctuating.
  3. Angle estimated by FAST Observer is also not stable.

P.S: Graph shows the Estimator Angle using the Data log feature. 

I request you to help us in resolving this issue. 

Note: I did went to Build Level 4 and tried to run motor but then module over current fault along with phase lost faults comes. This is must be due to bad feedback signal from observer.