Active Phase Control for Maximum Power Point Tracking of a Linear Wave Generator

A novel maximum power point tracking (MPPT) method for a wave energy converter is proposed. The output power can be expressed as a product of excitation force and wave speed. Therefore, the condition for maximum extraction of wave energy is ensuring that excitation force is in phase with the velocit...

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Bibliographic Details
Published in:IEEE transactions on power electronics 2017-10, Vol.32 (10), p.7651-7662
Main Authors: Park, Joon Sung, Gu, Bon-Gwan, Kim, Jeong Rok, Cho, Il Hyoung, Jeong, Ilsu, Lee, Ju
Format: Article
Language:English
Subjects:
Acceleration
Active control
Active phase control
Algorithms
Archimedes wave swing (AWS)
Converters
Damping
Excitation
Force
Generators
Laboratory tests
linear generator
Mathematical model
Maximum power point trackers
maximum power point tracking (MPPT) method
Maximum power tracking
Phase control
point absorber
power take off device (PTO)
Stators
wave energy converter (WEC)
Wave power
wave power generation
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Summary:A novel maximum power point tracking (MPPT) method for a wave energy converter is proposed. The output power can be expressed as a product of excitation force and wave speed. Therefore, the condition for maximum extraction of wave energy is ensuring that excitation force is in phase with the velocity of the buoy. However, the phase between excitation force and velocity is determined by the wave period. In the ocean, a wave has an irregular period and amplitude of wave position. In this paper, the wave period was estimated using the velocity and acceleration information. Based on the estimated wave period, the novel MPPT algorithm is proposed. The benefit of the proposed method is that the additional configuration is not required. The proposed MPPT algorithm is presented in detail, in addition to simulation and laboratory test results.
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2016.2625843