Desenvolvimento de uma fonte de potência CA para geração de formas de onda de até 2kHz

• Autor(a) principal: Tambara, Rodrigo Varella
• Data de Publicação: 2010
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Manancial - Repositório Digital da UFSM
• Texto Completo: http://repositorio.ufsm.br/handle/1/8482
• topic: Eletrônica de potência; Controle adaptativo robusto; Operador delta; Aquisição de dados; Modulação por largura de pulso; Power electronics; Robust adaptive control; Delta operator; Data acquisition; Pulse width modulation; CNPQ::ENGENHARIAS::ENGENHARIA ELETRICA

This work presents the development of an alternating current power source with a single-phase full bridge voltage inverter, based on electronic switches. The source is designed to drive electromechanical and electric plants. The prototype is designed with 1kVA nominal power and is able to generate sinusoidal waveforms up to 2kHz. The inverter operates at the switching frequency of 50kHz. A robust model reference adaptive controller is designed and implemented to adjust the output voltage of the source. Additionally, the elements of the source and the system for measuring the electrical parameters are presented. A digital signal controller is used to control and generate signals with pulse width modulation. The discretization of the control system is performed using the delta operator. Finally, experimental results and analysis of the closed loop system are presented. Based on these results, the experimental performance of the designed source and the proposed control system are examined.