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MOTORWARE: How to improve the utilization ratio of voltage?

user4880607
Prodigy 60 points
Part Number: MOTORWARE

Hi all,

        I ues proj_lab09 and enable the field weaken ,but the current is  too big that I wanna raise the utilization ratio of  voltage!

here's how I modified lab09  to reduce current.but the current is still  too big, could you have any advices to improve the utilization ratio of  voltage?

I  have tried to use lab10a over modulation ,but the current was worst and the speed was  not up to the requirements.

  • 0
    TI__Guru** 111070 points
    Was the number of current sensor used in your application? The current reconstruction for over modulation can't work well if the number of current sensor is 2.
    It seems the motor will run in field weakening control for high speed, what's the reference voltage for entering field weakening?
    Increasing USER_MAX_VS_MAG_PU will improve voltage utility ratio, but you'd better to use current reconstruction if the USER_MAX_VS_MAG_PU is higher than 0.5.