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Technical Brief

A Sliding Mode Observer-based Icing Detection and Estimation Scheme for Wind Turbines

[+] Author and Article Information
Maria Letizia Corradini

Scuola di Scienze e Tecnologie, Università di Camerino, 62032 Camerino (MC), Italy
letizia.corradini@unicam.it

Gianluca Ippoliti

Dipartimento di Ingegneria dell’Informazione, Università Politecnica delle Marche, 60131 Ancona, Italy
gianluca.ippoliti@univpm.it

Giuseppe Orlando

Dipartimento di Ingegneria dell’Informazione, Università Politecnica delle Marche, 60131 Ancona, Italy
giuseppe.orlando@univpm.it

1Corresponding author.

ASME doi:10.1115/1.4037387 History: Received October 27, 2016; Revised July 20, 2017

Abstract

In this paper the problem of icing detection is considered for wind turbines operating in medium speed wind region (Region 2) and subject to a control law tracking the maximum delivery point of the power coefficient characteristic. Based on a robust observer of the rotor angular acceleration, rotor inertia is estimated in order to detect its eventual increase due to icing. Moreover, the observed value of rotor inertia can be potentially used for updating the controller parameters or to stop the turbine when icing is too severe. The proposed approach has been tested by intensive MatLab® simulations using the NREL 5 MW wind turbine model.

Copyright (c) 2017 by ASME
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