Sugestões de trabalhos futuros

a) Adicionar outras restrições a função custo do FS-MBPC, incorporando por exemplo, termos associados a redução da frequência média de chaveamento e a restrição da tensão de estator (Vs < Vs nominal)

b) Utilizar estratégias de enfraquecimento de campo visando melhorar a eficiência energética do motor

c) Investigar outras técnicas de otimização on-line dos fatores de ponderação, incorporando conceitos como critério de decisão baseado em lógica Fuzzy, de modo que os valores de ajuste dos fatores de ponderação variem de acordo com o ponto de operação do motor

d) Realizar a discretização das variáveis de estado através da aplicação de técnicas mais precisas como, os métodos de Henu e a Euler de segunda ordem

e) Reduzir os níveis de oscilação do torque eletromecânico e do fluxo magnético, bem como a distorção harmônica da corrente, através da introdução de técnicas como o controle Duty Cycle, que propõe a otimização dos estados de chaveamento e da frequência de discretização do inversor.

Capítulo 4: Conclusões e Sugestões de Trabalhos Futuros 63 f) Utilizar horizontes longos de predição h > 1 a fim de aperfeiçoar a performance do

FS-MBPC

g) Aplicar técnicas de estimação da velocidade mecânica do motor, de maneira não-invasiva, por meio de aquisição e processamento de sinais elétricos, sem a necessidade de intervenção física direta no motor.

h) Utilizar a estratégia de controle FS-MBPC com controlador SM no controle de velocidade do motor de indução multifásico e do motor síncrono de ímãs permanentes

64

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APÊNDICE A