Control of 3 - Phase 4 - Wire Isolated Grids

  • Buttner Jurgen (Technische Universitat Ilmenau Dept. of Power Electronics and Control) ;
  • Ellinger Thomas (Technische Universitat Ilmenau Dept. of Power Electronics and Control) ;
  • Muller Andre (Technische Universitat Ilmenau Dept. of Power Electronics and Control) ;
  • Petzoldt Jurgen (Technische Universitat Ilmenau Dept. of Power Electronics and Control)
  • Published : 2001.10.01

Abstract

The generation of isolated grids by pulsed converters with characteristics close to the mains of the utility companies is a pretentious task. For generation of three-phase four-wire isolated grids are presented possible topologies and the demands on the system control are processed. For control of all conceivable load and error conditions, an extensive control technology is necessary. This must permit unsymmetrical operating conditions for an unlimited period but recognize errors simultaneously and therefore an overloading the consumer and the power semiconductors reliable may prevent. Measurement results on an experimental plant show the problems to be solved.

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