Increasing the Efficiency of Induction Generator in Small Hydro Power Plant for Varying River Flow Rate

  • Ondrej Rubes
  • Dalibor Cervinka
Conference paper
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 644)


This paper deals with improving efficiency of a small hydro power plant that not operates in nominal power, but in lower power. Efficiency is lower in this low power operation than in nominal power operation since constant no-load losses. These no-load losses can be varied by changing stator voltage and it may produce higher efficiency. Relation between efficiency, power operation and stator voltage are presented and the highest possible efficiency is highlighted. This process is made for typical 15 kW small hydro power plant with horizontal Francis turbine. Finally, there is comparison between original efficiency of generator and improved efficiency with corresponding stator voltage and one year power savings.


Renewable energy Small hydro power plant Induction generator No-load losses Efficiency Power saving 



This research work has been carried out in the Centre for Research and Utilization of Renewable Energy (CVVOZE). Authors gratefully acknowledge financial support from the Ministry of Education, Youth and Sports of the Czech Republic under NPU I programme (project No. LO1210).


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Copyright information

© Springer International Publishing AG 2018

Authors and Affiliations

  1. 1.Brno University of TechnologyBrnoCzech Republic

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