Modelling and region stability analysis of wind turbines with battery energy storage system based on switched system with multi-equilibriums

Dai, Xiaokun, Song, Yang and Yang, Taicheng (2019) Modelling and region stability analysis of wind turbines with battery energy storage system based on switched system with multi-equilibriums. Transactions of the Institute of Measurement and Control. ISSN 0142-3312 (Accepted)

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Abstract

This paper deals with the modelling and control for wind turbine combined with a battery energy storage system (WT/BESS). A PI controller of pitch angle is applied to adjust the output power of WT, and a method for battery scheduling is presented for maintaining the state of charging (SOC) of BESS. When the battery level is below the lower limit, we increase the expected output power of wind turbine through raising the operation point to charge the battery. Considering the effect of charging/discharging, a switched linear system model with two equilibriums is presented firstly for such WT/BESS system. The region stability is analyzed and an approach for estimating the corresponding stable region is also given. The effectiveness of the proposed results is demonstrated by a numerical example

Item Type: Article
Keywords: Wind turbine, Rechargeable battery, Battery scheduling, Multiple equilibriums, Region stability
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Research Centres and Groups: Industrial Informatics and Signal Processing Research Group
Depositing User: Lucy Arnold
Date Deposited: 30 Jan 2019 11:02
Last Modified: 30 Jan 2019 11:02
URI: http://srodev.sussex.ac.uk/id/eprint/81420

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