Model based control of a small-scale biomass boiler

Markus Gölles*, Stefan Reiter, Thomas Brunner, Nicolaos Dourdoumas, Ingwald Obernberger

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Because of increased efforts to reduce CO2 emissions a significant step in the development of small-scale (residential) biomass boilers for space heating has been achieved in recent years. Currently, the full potential for low-emission operation at high efficiencies, which is in principle possible due to optimized furnace geometries as well as combustion air staging strategies, cannot be exploited since there is still the need to enhance the controllers applied. For this reason, a model based control strategy for small-scale biomass boilers was developed and successfully implemented in a commercially available system. Thereby, appropriate mathematical models were developed for all relevant parts of the furnace and connected to an overall model subsequently used for the control unit design. The resulting controller is based on the input–output linearization and the state variables are estimated by an extended Kalman filter. Finally, the new control was implemented at a commercially available small-scale biomass boiler and the experimental verification showed a significant improvement of the operating behaviour in comparison to the conventional control.
Original languageEnglish
Pages (from-to)94-102
JournalControl Engineering Practice
Issue number1
Publication statusPublished - 2014

Fields of Expertise

  • Sustainable Systems

Treatment code (Nähere Zuordnung)

  • Application
  • Experimental


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