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Active and reative power control of doubly-fed induction generators for wind energy applications

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Filipe Sarmento Trindade
Total Authors: 1
Document type: Master's Dissertation
Press: Campinas, SP.
Institution: Universidade Estadual de Campinas (UNICAMP). Faculdade de Engenharia Elétrica e de Computação
Defense date:
Examining board members:
Ernesto Ruppert Filho; Mauricio Barbosa de Camargo Salles; Madson Cortes de Almeida
Advisor: Ernesto Ruppert Filho; Alfeu Joãozinho Sguarezi Filho

In the last decades, the increasing need for new clean and renewable sources of electric energy caused a great interest in alternative means to conventional power plants. Among them, the use of wind energy. In this context, the doubly-fed induction generator has been widely used with wind turbines worldwide due to the possibility of connecting its stator terminals directly to the electric power grid and its active and reactive power control possibility through electric power converters connected to its rotor terminals, which reduce the converters power capacity for up to 30% of the generator rated power. Thus, this dissertation aims to propose the generator active and reactive power control using sliding mode controllers using field-oriented control to perform independent power control. First, the performance of the proposed controller with the traditional PI power control controllers is compared through computer simulations connecting the generator to the electric grid through two converter topologies: with only the stator terminals connected to the grid and with the rotor terminals also connected to the grid through a back-to-back converter. Finally, the sliding mode controller was implemented on a laboratory assembly with only the generator stator terminals connected to the grid to prove the proposal (AU)

FAPESP's process: 11/05611-2 - Electronic power converters and control techniques to be used in the energy processing of wind wound rotor induction generators
Grantee:Filipe Sarmento Trindade
Support Opportunities: Scholarships in Brazil - Master