The results of modeling of non-uniformly preliminary polarized piezoceramic transducers are presented. Physical characteristics are calculated by using a finite element software ACELAN. It is marked an ability to solve a complex nonlinear problems on determination of non-homogeneous residual polarization and the possibility of approximation this field of pre-polarization. As an example, we considered a model of transversely non-homogeneous polarized converter in the form of a strip and calculated its physical characteristics such as the electromechanical coupling coefficient of three first modes, resonance frequencies, etc. It is shown that for a certain choice of the field residual polarization for the converter in the form of a strip the factor of electromechanical coupling on the some modes is increased.