Wind Energy Converters
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. Analysis of wear in organic and sintered friction materials used in small wind energy converters
Wind energy converters of small size used in isolated units to generate electrical energy must present low maintenance cost to such facilities economically viable. The aspect to be analyzed in cost reduction is the brake system, since in isolated systems the use of brake is more frequent reducing the brake pads life time. This study aims at analyzing the wea
Publicado em: 2010
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2. Analysis of wear in organic and sintered friction materials used in small wind energy converters
Wind energy converters of small size used in isolated units to generate electrical energy must present low maintenance cost to such facilities economically viable. The aspect to be analyzed in cost reduction is the brake system, since in isolated systems the use of brake is more frequent reducing the brake pads life time. This study aims at analyzing the wea
Materials Research. Publicado em: 2008-09
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3. MÃtodos de sincronizaÃÃo de conversores em sistemas de geraÃÃo distribuÃda / Converter synchronization methods for distributed generators systems
The use of frequency converters DC/AC to integrate renewable energy as distributed generation is becoming more common. In such applications, the synchronization with the voltage vector is fundamental to control the converters, particularly considering the new requirements on Low Voltage Ride Through demanded from the distributed generation. This work propose
Publicado em: 2008
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4. CONTRIBUTIONS TO STUDY OF WIND FARM CONNECTION TO THE UTILITY / CONTRIBUIÇÕES AO ESTUDO DE CONEXÃO DE GERAÇÃO EÓLICA À REDE ELÉTRICA
Distribution systems have not been designed to receive distributed generation (DG) units. The electric energy injection in these systems is safe and reliable if the characteristics regarding of DG interconnection in distribution power systems are considered: (i) Protection; (ii) Stability; (iii) Electric energy market; (iv) Quality of energy. In this work, a
Publicado em: 2007
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5. Uma contribuição à modelagem de complexos eólicos contendo geradores especiais para atenuação das componentes harmônicas
Most of the wind energy conversion systems (WECS) currently in operation in the world use asynchronous generators in the transformation of wind energy into electricity energy. In Brazil, although it is recognized that the parcel of wind farms is still very reduced, it is evidenced that the principle of the employed generation is mainly synchronous. Within th
Publicado em: 2007
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6. Controle e integração de centrais eólicas à rede elétrica com geradores de indução duplamente alimentados. / Control and integration of wind farms to the power grid using doubly fed induction generators.
This Thesis presents the control and integration of wind farms to the interconnected power grid, using doubly fed induction generators (DFIG). The main objective of the present Thesis was to develop discrete control strategies for the wind generation system, with the goal to reduce the wind variations impacts in the grid power quality. The design technique s
Publicado em: 2006
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7. Geração de energia a partir de fonte eólica com gerador assíncrono conectado a conversor estático duplo. / Wind energy generation using asynchronous generator conected to back to back converters.
Após o choque do racionamento de energia elétrica, decorrente do desequilíbrio entre oferta e demanda, os vários setores da sociedade brasileira constataram a real e iminente necessidade de diversificação das fontes de geração de energia elétrica e de seu uso racional. Busca-se hoje novas fontes, entre as quais a eólica, uma alternativa nova e prom
Publicado em: 2004