Metoda polowo-obwodowa obliczania charakterystyk elektromechanicznych synchronicznych silników reluktancyjnych

In the paper a method to calculate the electromechanical characteristics and lumped synchronous parameters of Synchronous Reluctance Motor (SynRM) is presented. This method is similar to the so-called loading method used to calculate electromechanical characteristics of Permanent magnet Synchronous Motors and introduced by M.A. Rahman and P. Zhou at the beginning of 90's. In the presented method a 2D finite element analysis (FEA) of magnetic field inside the machine is carried out separately for each of given load conditions and simultaneously equations of SynRM model in d-q reference frame are solved using parameters obtained from FEA which are specific for each of load conditions. Calculations are repeated automatically for in advance given range of motor loads. In the R&D Centre Of Electrical Machines "Komel", the software for analysis and evaluation of SynRM performance at synchronous operation was developed on the basis of presented method. The examples of electromechanical characteristic curves calculated for SynRM using described method are presented in the paper and compared with the laboratory test results.