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Journal of Control Science and Engineering
Volume 2013 (2013), Article ID 342949, 10 pages
http://dx.doi.org/10.1155/2013/342949
Research Article

Implementation of Control System for Hydrokinetic Energy Converter

Division of Electricity, Department of Engineering Science, Uppsala University, P.O. Box 534, 75121 Uppsala, Sweden

Received 24 September 2012; Revised 21 March 2013; Accepted 22 March 2013

Academic Editor: Pierluigi Siano

Copyright © 2013 Katarina Yuen et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

At Uppsala University, a research group is investigating a system for converting the power in freely flowing water using a vertical-axis turbine directly connected to a permanent magnet generator. An experimental setup comprising a turbine, a generator, and a control system has been constructed and will be deployed in the Dalälven river in the town of Söderfors in Sweden. The design, construction, simulations, and laboratory tests of the control system are presented in this paper. The control system includes a startup sequence for the turbine and load control. These functions have performed satisfactorily in laboratory tests. Simulations of the system show that the power output is not maximized at the same tip-speed ratio as that which maximizes the turbine power capture.