Work. Pt.  Sine wave  Motor  If I PSI N
Positioning and objective
The aim of the test “Working point – Sine wave – Motor – If, I, Ψ, N” is to characterize the behavior of the machine when operating at the targeted input values If, I, Ψ, N (Magnitude of field current, magnitude of current, Control angle, Speed).
These three inputs are enough to impose a precise working point.
For instance, a working point can be chosen on the efficiency map, by identifying the field current, current, the control angle, and the speed with different curves or maps displayed in the “Performance mapping / Sine wave / Motor / Efficiency map” test. Then, the “Working point – Sine wave – Motor – If, I, Ψ, N” test allows to compute the performance for this working point.

“Working point – Sine wave – Motor – If, I, Ψ, N” illustration 
The results of this test give an overview of the electromagnetic analysis of the machine, considering its topology.
The general data of the machine, like the machine constant and power balance, are computed and displayed. The motor convention is used to build the model.
The magnetic flux density is also computed in every region of the machine’s magnetic circuit to evaluate the design.
 “Fast computation mode” is perfectly suited for the predesign step (Hybrid model based on MagnetoStatic Finite Element computations and Park transformation theory)
 “Accurate computation mode” is perfectly suited for the final design step (Pure Finite Element modeling based on transient computations)
It also gives the capability to make comparisons between the results obtained from the measurements and those obtained with Altair® FluxMotor®.
The following table helps to classify the test “Working point – Sine wave – Motor – If, I, Ψ, N”.
Family  Working point 
Package  Sine wave 
Convention  Motor 
Test  I, Ψ, N 
Positioning of the test “Working point – Sine wave – Motor – I, Ψ, N” 
User inputs
The four main user input parameters are the field current, supply line current, control angle, speed, and computation mode. In addition, the temperatures of the windings must be set.
Main outputs
Test results are illustrated with data, graphs, and tables.
Main results
 Machine performance – Base speed point
 General data
 Machine constants
 Power balance
 Flux in airgap
 Flux density in iron
 Power electronics
 Inverter
 Working point
 Ripple mechanical torque
 Working point
Curves – in the “Fast computation modes”
 Ripple mechanical torque versus rotor angular position
 Flux density in airgap versus rotor angular position
Curves – in the “Accurate computation modes”
 Mechanical torque versus rotor angular position
 Mechanical torque harmonic analysis
 Flux density in airgap versus rotor angular position
 Flux density in airgap harmonic analysis
 Field voltage versus rotor angular position
 Field current versus rotor angular position
 Phase voltage versus rotor angular position
 Phase voltage harmonic analysis
 Phase current versus rotor angular position
 Phase current harmonic analysis
Graphics
 Isovalues