Work. Pt. - Sine wave - Gen - R L N

1. Positioning and objective

The aim of the test “ Working point – Sine wave – Generator – R-L-N” is to characterize the generator performance when operating with a star-connected 3-phase R, L load at the targeted speed N.

“Working point – Sine wave – Generator – R, L, N ” illustration

The results of this test give an overview of the electromagnetic analysis of the machine considering the machine topology.

The general data of the machine, like machine constants, power balance and magnet behavior are computed and displayed. The considered convention is the generator one.

The magnetic flux density is also computed in every region of the machine magnetic circuit to evaluate the design.

The following table helps to classify the test “Working point – Sine wave – Generator – R, L, N”.

Family Working point
Package Sine wave
Convention Generator
Test R, L, N
Positioning of the test “Working point – Sine wave – Generator – R, L, N”

2. User inputs

The three main user input parameters are the characteristics of the load (R, L) and the speed.

In addition, temperatures of winding and magnets and mechanical losses must be set.

3. Main outputs

Test results are illustrated with data, graphs and tables

3.1 Tables of results

  1. Machine performance – Open circuit data

    • Results

  2. Machine performance – Base speed point

    • General data
    • Machine constants
    • Power balance
    • Flux in airgap
    • Flux density in iron
    • Magnet behavior including evaluation of demagnetization rate

  3. Ripple mechanical torque

    • Working point

3.2 Curves

  1. Ripple mechanical torque versus rotor angular position
  2. Flux density in airgap versus rotor angular position