Direct Speed Control Scheme for Maximum Power Point Tracking of a 1.5MW DFIG Wind Turbine

Edy Ayala, Nicolás Pozo, Silvio Simani, Eduardo Muñoz

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


In the present work, a control strategy for Maximum Power Point Tracking (MPPT) applied to a wind turbine is described. The electric machine consists of a 1.5MW Doubly Fed Induction Generator (DFIG). This strategy is developed according to the theory of Direct Speed Control (DSC), which includes a state observer. This strategy considers the Low Shaft Speed (LSS) as an input and the iqr reference current as the output. This control mechanism allows monitoring the MPPT; thus, changing the Power Coefficient (Cp) to its optimal value during the wind turbine operation. Among its main features, the controller is configured to work with the incorporation of different wind inputs, a fact that permits evaluating the system’s response to disturbances and variations. For simulation tests, a wind turbine has been modeled in MATLAB-Simulink and Fatigue, Aerodynamics, Structures and Turbulence (FAST) software. The strategy has been compared to a PI-MPPT controller and has demonstrated improvements in terms of speed and output power extraction.

Original languageEnglish
Title of host publicationProceedings of the 6th Brazilian Technology Symposium, BTSym 2020 - Emerging Trends and Challenges in Technology
EditorsYuzo Iano, Osamu Saotome, Guillermo Kemper, Ana Claudia Mendes de Seixas, Gabriel Gomes de Oliveira
PublisherSpringer Science and Business Media Deutschland GmbH
Number of pages11
ISBN (Print)9783030756796
StatePublished - 2021
Event6th Brazilian Technology Symposium, BTSym 2020 - Virtual, Online
Duration: 26 Oct 202028 Oct 2020

Publication series

NameSmart Innovation, Systems and Technologies
ISSN (Print)2190-3018
ISSN (Electronic)2190-3026


Conference6th Brazilian Technology Symposium, BTSym 2020
CityVirtual, Online

Bibliographical note

Publisher Copyright:
© 2021, The Author(s), under exclusive license to Springer Nature Switzerland AG.


  • DFIG
  • Direct speed control
  • MPPT
  • Power coefficient
  • Wind turbine


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