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Control 3 phase motor with STEVAL-IPM15b

221
Associate

Hello,

I am trying to drive a three-phase motor with the STEVAL-IPM15b, but it is not working properly. I applied 15V to Vcc and 125V or 150V to Vdc and tried testing, but the motor did not run. I checked TP5, TP12, TP6, and TP7 with an oscilloscope, and it seems that the gate signals are being generated. I have attached the waveform from the oscilloscope in the diagram.

The yellow line shows the signals in the following order: HU (high side U phase), LU (low side U phase), HV, and HW. Additionally, I have set the dead time to 4μs. On the J2 connector, pin 2 is GND, pins 3, 5, 7, 9, 11 and 13 have the respective phase PWM signals, and pin 25 is receiving 5V.If my usage is incorrect, I would appreciate it if you could let me know.

Thank you for your time and assistance.

Best regards,

Jiro Tyubu.​

 

 

I solved it.(2025/3/16)

 

gateSignal.png

1 REPLY 1
GMA
ST Employee

Hello @221,

Thank you for the update, and can you share your solution? It could help other community members.

If you agree with the answer, please accept it by clicking on 'Accept as solution'.
Best regards.
GMA