PORTALE DELLA DIDATTICA

PORTALE DELLA DIDATTICA

PORTALE DELLA DIDATTICA

Elenco notifiche



System identification and optimal control of wave energy conversion systems

01HVFRO

A.A. 2024/25

Course Language

Inglese

Degree programme(s)

Doctorate Research in Ingegneria Meccanica - Torino

Course structure
Teaching Hours
Lezioni 21
Esercitazioni in aula 4
Lecturers
Teacher Status SSD h.Les h.Ex h.Lab h.Tut Years teaching
Faedo Nicolas Ezequiel   Ricercatore L240/10 IIND-02/A 10 0 0 0 2
Co-lectures
Espandi

Context
SSD CFU Activities Area context
*** N/A ***    
Presentazione The pathway towards decarbonisation inherently requires a higher penetration of a variety of renewable energy into the mix. Ocean wave energy has a massive potential to contribute towards achieving this key goal. The devices in charge of converting this energy into usable power are called wave energy converters (WECs). This course aims at introducing the student to the fundamentals of the principles underlying WEC systems. In particular, system identification and optimal control of these devices will be the main focus of the course, providing the student with a set of tools that can be used to optimise the operation of WEC devices. The required theoretical elements will be discussed accordingly, making emphasis on a multidisciplinary approach, including techniques which are transferrable to other renewable energy applications.
None. Basic knowledge of Matlab and Simulink is adviced.
1. Fundamentals of dynamical systems: Basic principles of linear time-invariant (LTI) and their representations. 2. Ocean waves: Linear wave theory. Statistical representation of ocean waves. Markov chains and realization theory. 3. Time-domain modelling: Time-domain models computed from the previously described frequency-domain models, addressing e.g. Ogilvie-relations, radiation convolution, state-space approximations, among others. 4. Power take-off (PTO) systems and wave-to-wire modelling: Well-adopted PTO systems in the literature, including e.g. electric and hydraulic actuators, and their effect on the overall WEC dynamics. Modelling and simulation in the time domain. 5. An introduction to control systems: Fundamental objectives of control engineering, and how this can be applied to modify the dynamics of a given system, with special emphasis on the WEC control case. 6. WEC linear control fundamentals: Principles underlying optimal control for WEC systems, explicitly deriving a set of optimality conditions for maximum energy absorption for generic devices. 7. Extending notions to nonlinear WEC control: Spectral-domain meets maximum energy absorption – accommodating nonlinearities within impedance-matching theory. 8. An introduction to system identification: Fundamental objectives of the general field of system identification, and how this can be employed to compute data-based models for WEC systems. Non-parametric and parametric identification based on empirical frequency-domain information. 9. System identification for WECs: Grey-box and black-box identification for WEC systems, with emphasis on the definition of suitable input signals for generating representative output data, and techniques to parameterise models. 10. Advanced control of WECs: Overview of alternative parameterisations for LTI WEC control based on composite loops, and direct optimal control for WEC systems (e.g. model predictive control/spectral control/pseudo-spectral control). 11. MATLAB Code Session: Implementation of advanced control strategies in MATLAB using a conceptual WEC system.
On site
Oral presentation
P.D.2-2 - April