paper 150205120849

Abstract

The paper describes the identification of quadrature inductances of permanent magnet synchronous motor. The identification is based on the principle of Hammerstein model. The electrical diagram of permanent magnet synchronous motor could be divided into two parts. First one is the static nonlinearity and the second one is the linear dynamics. The identifica- tion of quadrature inductance from nonlinear part is discussed in this paper. Only inputs and outputs can be read, when the Hammerstein model is used. Since the hessian of loss function cannot be created, the calculation is divided into two parts and the variables are computed or estimated.Because only nonlinear part is used, the outputs of this part must be calculated from system outputs. The identification is carried out on the nonlinear part by Newton method.

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Ivo Vesely