Observer-Based LQR for Wind Energy Conversion Systems with Single Measurement

Van Phong Vu, Ton Do

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

The control system in wind energy conversion systems is used for tracking the optimal power via regulating the rotor speed of the generator. In this paper, we proposed a novel observer for estimating not only aerodynamic torque in wind energy conversion systems, but also d-axis and q-axis currents. Therefore, in the proposed control system, only the rotor speed of the generator is required to be measured. It should be noted that this is the first time, such a control system can do that for wind energy conversion systems. To form a complete control system, we use linear optimal control method for tracking the optimal trajectory of a generator. In this paper, the permanent magnet synchronous generator is used. In addition, on the basis of the Lyapunov theory and Sum-Of-Square technique, the conditions for observer synthesis are derived in the main theorem. The simulation results show that our control system with proposed robust observer can effectively track the speed reference in the conditions of unknown wind speed and stator currents.

Original languageEnglish
Title of host publicationProceedings 2018 4th International Conference on Green Technology and Sustainable Development, GTSD 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages77-81
Number of pages5
ISBN (Electronic)9781538651261
DOIs
Publication statusPublished - Dec 28 2018
Event4th International Conference on Green Technology and Sustainable Development, GTSD 2018 - Ho Chi Minh City, Viet Nam
Duration: Nov 23 2018Nov 24 2018

Publication series

NameProceedings 2018 4th International Conference on Green Technology and Sustainable Development, GTSD 2018

Conference

Conference4th International Conference on Green Technology and Sustainable Development, GTSD 2018
CountryViet Nam
CityHo Chi Minh City
Period11/23/1811/24/18

Keywords

  • linear quadratic regulator (LQR)
  • observer
  • wind energy conversion systems (WECSs)
  • Wind speed estimation

ASJC Scopus subject areas

  • Business, Management and Accounting (miscellaneous)
  • Fluid Flow and Transfer Processes
  • Computer Networks and Communications
  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering
  • Mechanics of Materials

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