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TMDSHVMTRINSPIN: BLDC washer machine Motor tuning

amir Ibrahim
Intellectual 260 points
Part Number: TMDSHVMTRINSPIN
Other Parts Discussed in Thread: MOTORWARE

hello all , i have the HV kit  TMDSHVMTRINSPIN and i have some questions please

1-am trying to run a BLDC washer machine motor , on InstaFOC , i notice the RPM showing in the instaFOC is not true , i measured with a Tachometer , the instaFOC shows 2500 RPM but the real speed is 415 RPM 

2-how can i make the motor turn faster than 415 RPM ? the Vbus is 163 V see below 

please give me some hints how to tune to get the best performance of the motor .what parameter that i can change and check the results ?

 

  • 0
    TI__Genius 17175 points
    Did you identify the motor using the InstaSPIN-FOC Universal GUI? Is your goal to use InstaSPIN-MOTION for sensored control? Or is your application sensorless? Typically issues with speed feedback are related to an incorrect number of pole pairs in the user.h

    Sean
  • 0 in reply to Sean Bigley
    Intellectual 260 points
    @sean yes see the pic above, am trying to use instaFOC and the pole at 12 is the same result as at 4 if you please can answer my 2 question would be great
  • 0 in reply to amir Ibrahim
    TI__Guru** 109810 points
    You need to change the pole pairs in user.h according to your motor, and rebuild the project file for the GUI to spin the motor. The pole pairs and motor parameters can't be changed in GUI. And you may try to increase the "Motor Max Current" to see what happen.

    Btw, you might use CCS project in motorWare to debug your project directly, the GUI is much better only to demo the instaSPIN solution, not for further development. And as Sean mentioned, you'd better use InstaSPIN-FOC Universal GUI if you didn't use instaSPIN-motion for motor drive.
  • 0 in reply to Yanming Luo
    Intellectual 260 points

    @Yanming Luo

    i was never able to use the universal with the USB on side of the 24v power socket i only was able to use the instaFOC and Motion , i was able to spin the motor fast with the weakaining Manual ID A to -4 , iwas spining like 2500 RPM 

  • 0 in reply to amir Ibrahim
    TI__Guru** 109810 points
    Please check if there is a reducing mechanism between the motor and the washing machine drum, and make sure that the value you measured is the motor running speed.

    You might use CCS to debug the motor using the correct lab project that might help you to find the question if you still have speed issue. You may run lab02b to identify the motor first, and then run lab05b or lab10a to implement speed loop control. The detailed operation could be found in instaSPIN lab guide that is in the folder of motorWare. And you may monitor the frequency of current using a probe and check if it's a right relationship to the feedback speed. Motor speed (rpm)=electrical frequency(Hz)*60/(pole pairs).