modelwFollowing
Compares U/f=cost and mains start-ups
Extends from Modelica.Icons.Example (Icon for runnable examples).
Information
This system simulates variable-frequency start-up of an asyncronous motor.
Two different sources for the machine re compared.
The motor supply is constituted by a three-phase system of quasi-sinusoidal shapes, created according to the following equations:
WEl=WMecc*PolePairs+DeltaWEl
U=U0+(Un-U0)*WEl/WNom
where:
- U0, Un U, are initial, nominal actual voltage amplitudes
- WMecc, WEl, are machine, mechanical and supply, electrical angular speeds
- PolePairs are the machine pole pairs
- delta WEl is a fixed parameter during the simulation, except when the final speed is reached
When the final speed is reached, the feeding frequenccy and voltage are kept constant (no flux weaking simulated)