New tests for induction machines with squirrel cage

Computation of the efficiency map with scalar control command (U-I)

The aim of the test “Performance mapping – Sine wave – Motor – Efficiency map scalar U - I” is to characterize the behavior of the machine in the "Torque-Speed" area.

Input parameters like “the maximum Line-Line voltage, the maximum line current and the maximum speed” of the machine are considered.

The main difference with the test “Performance mapping – Sine wave – Motor – Efficiency map scalar U - f” (available in the previous version) is that the speed of the base speed point is not defined by a user input (Rated power supply frequency) but deduced by the internal process of computation to maximize mechanical power.

Characterization / Model / Maps for SMPM - New user’s inputs to select the operating quadrants.

One type of command mode is available: scalar command.

Input parameters define the torque-speed area in which the evaluation of the machine's behavior is performed.

In the results, the performance of the machine at the base point (base speed point) and at the maximum speed (maximum speed point), set by the user, is presented.

A set of curves (like Torque-Speed curve) and maps (like Efficiency map) are computed and displayed.

Note: Curves are calculated and displayed identically to those presented in the test “Performance mapping – Sine wave – Motor – Efficiency map scalar U-f”.