Model - Maps

1. Positioning and objective

The aim of the test “Characterization - Model - Motor - Maps” is to give 2D maps in J d -J q plane for characterizing the 3-Phase reluctance synchronous machines.

These maps allow predicting the behavior of the electrical rotating machine at a system level.

In this test engineers will find a system integrator and / or control-command tool adapted to their needs and able to provide accurate maps ready to be used in system simulation software like Activate.

“Characterization - Model - Motor - Maps” illustration

Performance of the machine in steady state can be deduced from the results obtained in this test in association with the drive and control mode to be considered.

The following table helps to classify the test:

Family Characterization
Package Model
Convention Motor
Test Maps
Positioning of the test “Characterization - Model - Motor - Maps”

2. Inputs / Outputs

2.1 User inputs

Maps are mainly function of the following user inputs: the maximum value of the electrical current and the speed.

2.2 Main outputs

Test results are illustrated with data, graphs, and tables.

Table of results

  1. Machine performance – Open circuit

    • Results

    Maps in J d -J q plane

  2. Flux linkage

    • D-axis flux-linkage F d
    • Q-axis flux-linkage F q
  3. Inductance

    • D-axis inductance (dynamic and static)
    • Q-axis inductance (dynamic and static)
  4. Saliency in J d -J q area
  5. Torque

    • Electromagnetic torque T em
  6. Losses

    • Stator iron losses W iron versus speed
    • Joule losses W Cus in stator winding
    • Power electronics losses
    • Total losses W total versus speed


  1. Mechanical losses versus speed