⚡ Voltage Build-Up of a Shunt Generator

Interactive demonstration of residual magnetism → field excitation → rising terminal voltage

Generator & Magnetic Field

Terminal Voltage
0 V
0% of final voltage
Ready: Start the generator to observe voltage build-up.

Build-Up Sequence

  1. Residual magnetism produces a small initial EMF.
  2. The initial EMF drives current through the shunt field winding.
  3. Field current strengthens the magnetic flux.
  4. Increasing flux produces a larger generated EMF.
  5. The process continues until the operating point is reached.

Voltage Build-Up Curve

Important concept: A self-excited shunt generator requires sufficient residual magnetism and an appropriate field resistance. If residual magnetism is absent, the field winding is incorrectly connected, the field resistance is too high, or the generator speed is too low, voltage may fail to build up.