Dobór parametrów konstrukcyjnych modułu wibracyjnego reluktancyjnego wzbudnika drgań harmonicznych skrętnych

In the paper selection of basic design parameters for vibration module using reluctance motor is presented. The module is a part of torsional vibration exciter which is a device enabling measurement evaluation of properties of complex drive systems in steady state conditions (e.g. eigenfrequencies). The goal of the design process is decrease of angle harmonics in electromagnetic torque, in particular slot harmonics. Analysis is based on analytical approach using Fourier series method applied to results obtained with the help of 2D Finite Element Method. The most important design alteration resulting from obtained results is the step skew of the rotor core, which enables compensation of chosen torque harmonics. The other result of research is introduction of magnetic wedges in stator slots. Resulting torque – angle characteristic is very smooth and should enable easier control of torque which is the basic requirement for the designed vibration exciter.