Full power back to back IGBT inverter

The purpose of the IGBT Converter system is the variable speed operation of the wind-turbine.

Special features are low flicker, low harmonic distortion and controlled power to the mains.


  • Special design available to protect the stator winding from voltage spikes.
  • Inclusion of grid stability control and low voltage ride through  “LVRT”.
  • Line filter to reduce harmonics.
  • Several hundred successful in operation.
  • Inverter for the control of power-grid and generator.
  • Line reactors installed on both sides of the cabinet.
  • Converter cabinet containing the power distribution.
  • Control equipment for communication inside turbine.
  • High efficient liquid cooling to dissipate IGBT losses.
  • Design of converter based on experience since 1995.