TMS320F28377S: FCL Motor Bemf constant

Eric Ma

Intellectual 2630 points

Part Number: TMS320F28377S

Hi C2000 champion

In the FCL example, there is a motor Bemf constant parameter, as below:

FCL_Pars.BemfK = 0.8;

Customer want to know what is meaning of this BemfK, their motor have a similar parameters, Ke = 32 V/KRPM.

Eric

over 8 years ago

0 Ramesh Ramamoorthy over 8 years ago

TI__Mastermind 27240 points

This is in normalised scale or in per unit. In other words, when the motor runs at full speed and rated flux, this motor generates a bemf of about 80%, while the remaining 20% is lost in motor resistance and inductance. Btw, this is an approximate value but close to the actual one. Minor difference may not impact the end result.

0 Eric Ma over 8 years ago in reply to Ramesh Ramamoorthy

TI__Intellectual 2630 points

Hi Ramesh,

Thanks for your comments.

Seems the value 0.8 didn't need to change in customer motor.

Eric

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TMS320F28377S: FCL Motor Bemf constant