First Order Dynamic Sliding Mode Control of a Wind Turbine with Optimized Tip Speed Ratio

This thesis explores a novel sliding mode control method to boost power from wind turbines, focusing on the power optimization region. The controller, designed for a 3rd-order system with generator torque input and rotor torque disturbance, is tested using a simple wind turbine model and FAST for validation. The first objective is to identify the optimal tip-speed-ratio (TSR) for maximum power using the Recursive Least Squares (RLS) method. The RLS generates a polynomial connecting the TSR and power coefficient, defining the wind turbine's operating point. A forgetting factor is incorporated in the RLS method for system adaptability to changing conditions. The other objective utilizes a first-order dynamic sliding mode controller with integration (FODSMCI) to control the wind turbine, keeping it at the optimal TSR for maximum power without chattering. The study revealed the RLS's effectiveness in determining optimal TSR on wind turbine models. The FODSMCI enables a balance between controller performance and rotor speed tracking, yielding a chatter-free response.

Name thesis:degree_name

Master of Science (MSc)

Discipline thesis:degree_discipline

Engineering – Mechanical & Manufacturing

Grantor dc:publisher.institution

Graduate Studies

Year dc:date.issued

2023

Author dc:creator

• Padmanabhuni, Nishanth

Advisor dc:contributor.advisor

• Pieper, Jeff

Committee member dc:contributor.committeemember

• Simon li, Ignacio Galiano Zurbriggen

• Wind turbines
• Renewable energy
• Robust Control

Statement dc:rights

• University of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.

Language dc:language.iso

en

DOI

https://doi.org/10.11575/PRISM/41775

OAI identifier oai:identifier

oai:ucalgary.scholaris.ca:1880/116930