Estimacao de Parametros e Velocidade da Maquina Assincrona em Acionamentos Estaticos

This work deals with estimation of electrical parameters and angular shaft speed of the asynchronous machine using discrete time models in delta operator. With respect to the stator resistance it is considered the case where its value is known a priori as well as a specific procedure to solely estimate its value. These two cases are taken into account in the joint estimation of electrical parameters and shaft speed. It is also considered the influences of errors on the value of stator resistance, the machine operating point, the orders of the power series that determine the discrete time model and the input excitation level over the quality of the estimates of the electrical parameters and speed. These studies were, initially, carried out via digital simulation and further completed through experimental tests of two three phase wound rotor induction machine.