Induction machines – Motor Factory – Test environment

Apparent power and power factor are wrong with delta winding connection

For the test working point U,f,N in accurate mode, the apparent power is wrongly computed.

(ref.: SLVFXM-18071)

Efficiency map vector control – Bad computation for Ld

The computation of the d-axis and q-axis inductances has been implemented in the framework of the new test Effciency map – vector control U-I.The computation of Ld via the d-axis flux linkage response surface gives bad results (ref.: FXM-17679).

The computation of the efficiency map (U, I) with mechanical losses can fail.

This issue raises a null-pointer exception (ref.: FXM-16157).

The flux density is not displayed in accurate mode computation.

While computing a working point (U, f, N) for an induction machine with a skewed squirrel cage and outer rotor, the flux density inside the airgap is not displayed. (ref.: FXM-16154).

Error when exporting and solving a project in Flux Skew – Transient application.

This issue occurs when the user input “Represented coil conductors” is set to All phases (ref.: FXM-15877).

Scalar Maps or Efficiency map (U,f) tests fail with hairpin winding technology

Sometimes, the tests Scalar Maps and Efficiency map (U,f) are not correctly solved with a hairpin winding configuration, like for the Motor M1 of the reference catalog (ref.: FXM-15843).

Scalar maps test can provide bad results

Power balance of No-load working point

Sometimes, computation of the no-load working point (slip = 0.1%) leads to a NaN (Not a Number) result. The computed amount of iron losses is not consistent with the power balance (ref.: FXM-12600).

Issue while computing the efficiency map (scalar control – U, f or U, I)

This problem occurs when there are 3 poles represented for the periodic portion of the model under consideration (ref.: FXM-17150).

Issue while computing the efficiency map (scalar control – U,f or U,I) – IMSQ

The scalar model gives wrong results when hairpin winding technology is considered compared to results obtained with an equivalent classical winding (ref.: FXM-17183).

Torque slip curve

Test results are not continuously consistent over a torque slip curve. This occurs with the test Performance mapping T(Slip) - induction machines with a skewed squirrel cage. When the user targets a working point as an added value to be computed with the whole Torque-slip curve, sometimes this additional working point doesn't belong to the curve (ref.: FXM-12599).