DRV10987EVM: EVM GUI phase-to-phase resistances inductor

David chen

Expert 1200 points

Part Number: DRV10987EVM

when I test my motor the three phase-to-phase resistances inductors are different. They are:

Ru-v = 3.441 ohm;Lu - v = 1535 uh

Ru-w = 3.502 ohm;Lu - w = 1735 uh

Rv-w = 2.296 ohm;Louis vuitton - w = 1296 uh

But EVM GUI can only fill in one, how to correspond?thank you

over 4 years ago

0 Sanmesh Udhayakumar over 4 years ago

TI__Expert 6065 points

Inductances can be different because of saliency in the motor. Just pick the minimum one.

What might be more concerning is the changing resistance phase to phase. There is a big difference in Rv-w than the other phase to phase resistances. Please see if you can confirm this is just the natural motor resistor imbalance or is it some extra wire cabling.

0 Sanmesh Udhayakumar over 4 years ago in reply to Sanmesh Udhayakumar

TI__Expert 6065 points

Were you able to follow up if my suggestions or fix your issue?

0 Sanmesh Udhayakumar over 4 years ago in reply to Sanmesh Udhayakumar

TI__Expert 6065 points

I will close this thread for now. If you want a followup, please reply to this thread or start a new thread

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DRV10987EVM: EVM GUI phase-to-phase resistances inductor