Estimação de Posição Rotórica de Motor PMSM com Minimização da Tensão de Alta Frequência
DOI:
https://doi.org/10.18618/REP.2012.1.447455Keywords:
Controle Sensorless, Motor Síncrono a Ímã Permanente, Estimacão de Posicão RotóricaAbstract
Este artigo apresenta os resultados de um estudo referente ao acionamento de um motor a ímã (PMSM) sem sensor de posição rotÓrica em baixa velocidade. A estimação de posição rotóriea em baixa velocidade é realizada com a aplicação de um sinal de alta frequência, contudo, este sinal pode ser distorcido durante a geração conversor de tensão do sistema de acionamento. Dessa forma, é proposto uma modificação no processo de demodulaçio do sinal de corrente resultante da injeção de sinal, com o objetivo de minimizar o erro de estimação produzido pela distorção da tensão de alta frequência. Resultados de simulação e experimentais, utilizando a plataforma montada em laboratório, são apresentados demonstrando a melhoria do desempenho do estimador de posição rotórica utilizando o método proposto.
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