Stalling-Free Control Strategies for Oscillating-Water-Column-Based Wave Power Generation Plants

The rising use of renewable power generation plants is highlighting the need for an integrated research combining multiple disciplines in order to achieve a commercially competitive technology stage. The demonstrative NEREIDA wave power plant installed in the northern coast of Spain constitutes a go...

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Bibliographic Details
Published in:IEEE transactions on energy conversion 2018-03, Vol.33 (1), p.209-222
Main Authors: M'Zoughi, Fares, Bouallegue, Soufiene, Garrido, Aitor J., Garrido, Izaskun, Ayadi, Mounir
Format: Article
Language:English
Subjects:
Air flow
Atmospheric modeling
Back-to-back converter
Converters
doubly fed induction generator (DFIG)
Electric power generation
Induction generators
Mathematical model
maximum power point tracking (MPPT)
memetic PSO (FPSOMA)
oscillating water column (OWC)
Particle swarm optimization
particle swarm optimization (PSO)
power generation
Power plants
Proportional integral derivative
Rotors
Stalling
Throttles
Topology
Torque
Turbines
wave energy
Wave power
wells turbine
Wells turbines
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Summary:The rising use of renewable power generation plants is highlighting the need for an integrated research combining multiple disciplines in order to achieve a commercially competitive technology stage. The demonstrative NEREIDA wave power plant installed in the northern coast of Spain constitutes a good example of this effort. This paper deals with the design, modeling, and control of the oscillating-water-column-based wave energy converter in order to maximize the power output of the NEREIDA power plant. The power optimization relies on two control strategies proposed to avoid the stalling behavior, a characteristic drawback of the Wells turbine, which limits the system's power. The first control strategy is an airflow control using a PID controller tuned by the particle swarm optimization algorithm and its recent memetic variant called fractional particle swarm optimization memetic algorithm. This controller will control a throttle valve to regulate the airflow in the turbine duct. The second one consist of adequately controlling the rotational speed of the generator by means of the rotor-side converter of the back-to-back converter connected to the doubly fed induction generator to provide a swift way to respond to the rapid variations in the turbine speed. The results show that both controls provide a higher power generation compared to the uncontrolled case.
ISSN:0885-8969
1558-0059
DOI:10.1109/TEC.2017.2737657