TMS320F28054: RhF value is negative during the motor identification stage with FOC

Ellis Nguyen

Part Number: TMS320F28054

Running the InstaSpin- FOC with an ACIM, during the RS stage, the result of the Rhf is negative. That doesn't sound right to me. please assist.

over 5 years ago

0 Sean Bigley over 5 years ago

TI__Genius 17175 points

Which board are you using? A TI EVM or a custom board? If it's a custom board, this may be an indicator that the current sampling is not correct.

Sean

0 Ellis Nguyen over 5 years ago in reply to Sean Bigley

Prodigy 120 points

I am using a custom board. I agree with your statement about the current sampling. Would you describe alittle more about the current sampling and its roles with the instaFoc

0 Ellis Nguyen over 5 years ago in reply to Sean Bigley

Prodigy 120 points

I am using a custom board. I agree with your statement about the current sampling. Would you describe alittle more about the current sampling and its roles with the instaFoc

0 Sean Bigley over 5 years ago in reply to Ellis Nguyen

TI__Genius 17175 points

Sorry for the delay in response. Please see section 5.2 of the InstaSPIN User's Guide located here: http://www.ti.com/lit/spruhj1g

Sean

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F28054: RhF value is negative during the motor identification stage with FOC