Controle digital de inversores monofásicos com realimentação de estados internos

• Ano de defesa: 2009
• Autor(a) principal: Braga, Filipe de Nassau e
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Uberlândia; BR; Programa de Pós-graduação em Engenharia Elétrica; Engenharias; UFU
• Palavras-chave em Português: Inversor; Controle digital; DSPIC; PI; Eletrônica de potência; Inversores elétricos; Sistemas de energia elétrica - Controle de qualidade; Inverter; Digital control; CNPQ::ENGENHARIAS::ENGENHARIA ELETRICA
• Link de acesso: https://repositorio.ufu.br/handle/123456789/14415

This work presents a contribution to the study of PWM sinusoidal inverters. It is presented some voltage output control techniques highlighting the advantages and disadvantages. One technique using two feedback loops and compensation by proportional integral compensators, besides showing a natural short circuit protection, is implemented and evaluated by studies, simulations and also experimentally. The design of constituent elements, the signal conditioning and the control firmware are shown, besides the mathematical modeling of the transfer functions for the controller. A prototype of a monophasic voltage inverter is assembled and its controller is implemented in a digital signal processor of 16 bits, fixed point, 40 MIPS, a DSPIC33FJ128MC706. The performance of the respective controller is analyzed with experimental results for the inverter supplying a linear and non linear load.