Robust adaptive PI control of wave energy converters with uncertain dynamics

Hoai-Nam Nguyen (1, 2, 3)

1 ARMEDIA-SAMOVAR - ARMEDIA
2 IP Paris - Institut Polytechnique de Paris
3 TSP - EPH - Département Electronique et Physique

There exist several approaches to design the optimal control strategy to harvest wave energy with a point absorber. However they are generally based on the assumption that the WEC and the PTO dynamics are well-known. In the practical WEC control implementation, this is generally not the case. The objective of this paper is to design a robust optimal control strategy that can take into account the uncertain WEC and PTO dynamics. Our choice is a robust adaptive PI control law. The proposed controller is validated and compared through simulation for irregular sea states.

Mots clés: Wave energy converter (WEC); Robust adaptive PI; Uncertain dynamics; Semidefinite programming (SDP)

Domaines: Mathématiques [math]; Physique [physics]; Sciences de l'environnement; Sciences de l'ingénieur [physics]

Hoai-Nam Nguyen. Robust adaptive PI control of wave energy converters with uncertain dynamics. IFAC Journal of Systems and Control, 2022, 19, pp.100183:1-100183:28. ⟨10.1016/j.ifacsc.2022.100183⟩. ⟨hal-03534386⟩