Hi,

I am not entierly sure how to correctly enter my motor parameters, and which effect they have, can anyone check if I am doing this correctly (sensorless operation with cordic startup, no extra features like flux weakening, bus voltage sensing):

- max rated speed: used for fault detection only, correct?

- nominal current: used for torque limitation, correct?

- nominal dc voltage: what is this value used for?

- Rs: this is meant per leg, so I measure the DC resistance between two phases and divide this by two

- Ls: same as Rs, measured at 100Hz

- demagnetizing current: what is this value used for?

- B-EmfConstant: I drive the motor externally, measure the AC voltage between two legs, calculate the RMS from that, divide this by used RPM, multiply with 1000

Any help is appreciated.

Regards

Frank

I am not entierly sure how to correctly enter my motor parameters, and which effect they have, can anyone check if I am doing this correctly (sensorless operation with cordic startup, no extra features like flux weakening, bus voltage sensing):

- max rated speed: used for fault detection only, correct?

- nominal current: used for torque limitation, correct?

- nominal dc voltage: what is this value used for?

- Rs: this is meant per leg, so I measure the DC resistance between two phases and divide this by two

- Ls: same as Rs, measured at 100Hz

- demagnetizing current: what is this value used for?

- B-EmfConstant: I drive the motor externally, measure the AC voltage between two legs, calculate the RMS from that, divide this by used RPM, multiply with 1000

Any help is appreciated.

Regards

Frank

- max rated speed is used to set the limit of target speeds (target greater are skipped), is used to scale the internal BEMF measurement, to calculate the PI parameters of the PLL (not for your case)

- nominal current is used for current limitation (yes)

- nominal DC voltage is used to caluclate the PI parameters of the current regulators, the parameters for the State Observer, very important for your case whit bus voltage measurement disabled

- Rs, Ls, B-EmfConstant (seems correct) phase to phase divided by 2 for Rs, Ls not for Bemf ((Peak to zero / 1.414)/(RPM/1000))

- Demagnetizing current is used by the Flux Weakening algorithm (usually can set the same value of nominal current)

Ciao

Gigi