List of the main issues

1. All machines

  1. Null values are not well managed while designing the Frame and shaft

    Null values are allowed for designing the housing, bearing or shaft dimensions, but this leads to a wrong thermal analysis. It is highly recommended not to use null values for the considered inputs (ref.: FXM-14705).

  2. Error while opening a motor (2020.1) with null shaft extension

    Opening a motor built with the version 2020.1 (or older) and with a null shaft extension leads to an error. With new versions, a null shaft extension is forbidden (ref.: FXM-14684).

  3. The interwire space is not well defined.

    The value of the interwire space applied in the resulting finite element model is twice the value set in the user inputs (ref.: FXM-14672).

  4. Transient thermal computation

    Sometimes, there is an issue with nonlinear thermal resolution. The convergence criteria doesn't reach from a certain time iteration leading to non-physical results then making the physical properties interpolations impossible. This can occur for duty cycle inside of which there are a huge number of working points for instance (ref.: FXM-14570).

  5. Air material properties are wrong for high temperature

    This issue impacts our internal computation processes while transient thermal solving. Indeed, some iterations involve very high temperature (more than 3000 °K) according to Newton Raphson non-linear solving method. During the resolution, this can lead to negative conductivities which make the computation fail (ref.: FXM-14465).
    Note: in case of problem, we can provide you an “Air material” with the right parameters.
  6. Building and export of a report failed

    While adding multiple new tests, and simultaneously executing the previously saved tests (12) along with assigning material in the report and saved test (12) + Materials in the report, the building and the export of the resulting report can fail (ref.: FXM-11574) + (ref.: FXM-14117).
    Note: In that case it is recommended to increase the allocated memory for Motor Factory in the user’s preferences.
  7. Inner slots with 2 layers winding and a liner can be infeasible

    Rarely, while adding a liner inside an inner slot inside of which there are 2 layers can fail (ref.: FXM-14100).

  8. Internal optimization processes can crash

    Sometimes, when FluxMotor® launches an optimization in the back end with HyperStudy®, and if there is an error in the internal process (evaluation of the objective functions), this makes FluxMotor® crash.

    Moreover, without any log file to explain the issue one cannot understand the cause of system crash (ref.: FXM-13949).

  9. When an IO cannot be loaded, the test results are not accessible

    When an IO cannot be loaded, the whole process that loads all the test results is stopped. As a result, no test is visible although the issue may concern one result in a particular test (ref.: FXM-13941).

  10. A wedge and/or inter-coil insulation region leads to a wrong slot equivalent thermal conductivity

    The slot radial thermal conductivity, which is automatically provided by the FluxMotor® in "Cooling-Internal" context, and used in all thermal tests is wrong if the slot contains faces "wedge" or "inter-coil insulator" (ref.: FXM-13896).

  11. Bad management of sequential inputs in HyperStudy® connector

    Some configurations of parameterized topologies can be obtained manually in Motor Factory but cannot be created from HyperStudy® for some connectors (ref.: FXM-13612).

  12. Power electronics and coupling with HyperStudy®

    For tests where settings "Electronics" is available, data like power electronics stage, maximum efficiency and its rated power can be selected for generating a connector for HyperStudy®, but it should not be (ref.: FXM-13726).

  13. Management of multi-parametric settings with HyperStudy® coupling

    One must be able to manage the case of sequential input update in HyperStudy® connector, especially for topology definitions (ref.: FXM-13612).

  14. Script Factory freeze temporarily when running a script

    When running a script, script factory gives the impression of freezing (while still running in the background). The editing window of the script becomes unresponsive until the script is done executing (ref.: FXM-13138).

  15. Winding environment – MMF computation

    The Counter-Clockwise sequence (MMF computation) is not considered in the Altair® Flux® model which one can export. Only the clockwise phase sequence is considered (ref.: FXM-10280).Using "phase sequence" set to "Counterclockwise" leads to wrong results in tests (ref.: FXM-13358).

  16. Flux density isovalues

    When a skewed topology is considered (Synchronous machines or induction machines), the flux density isovalues, the vector potential isolines and the rotor bars current density isovalues are not displayed (ref.: FXM-12564).

2. Synchronous machines – Motor Factory – Test environment

  1. Working point – Square wave – Forced I – Average computation of quantities

    The computation of average quantities like the iron losses, the Joule losses in magnets, torque is not done over a full electrical period. That can lead to wrong results (ref.: FXM-14091).

  2. Wrong data in HyperStudy® export area

    In the Export-HyperStudy® area, when the selected test is “Working Point, T-N”, the electronic setting "Max efficiency", and "Rated Power" are exported even if the associated option is not selected (ref.: FXM-13726).

  3. Maximum speed computation

    The estimation of the maximum speed is wrong for the tests “Working point - Sine wave – Motor - U-I” and “Working point - Sine wave – Motor - T-N”, when the control mode MTPA is selected (ref.: FXM-10916). The computation is always performed by considering a MTPV command mode.

3. Induction machines – Motor Factory – Test environment

  1. Power balance of No-load working point

    Sometimes, computation of 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).

  2. 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 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).

4. Induction machines – Motor Factory – Export environment

  1. End-ring impedance – Reference temperature is not well applied

    While exporting a model from FluxMotor® to Flux® 2D or Flux® Skew environment, if the end-ring impedance has been defined with the “constant computation mode” (= user mode) instead of the automatic one, the reference temperatures set by the user are not used in the resulting Flux® project. Instead, the default values are automatically considered (ref.: FXM-13713)

5. Part Factory

  1. Wrong management of part borders

    An inner part with air region on the bottom border is not allowed (ref.: FXM-13445)