Estimation of torque components of a salient pole synchronous machine

This paper presents a method for separate estimation of torque components in rotating electrical machines by capturing the asymmetry in the air gap flux density distribution. Reluctance torque, harmonic torques, main torque, saturation torque and cogging torque are estimated exemplary for a four-pole salient pole synchronous machine. This is done by converting the air gap field distribution, estimated with finite element method, into Rotating Tensors to capture its asymmetry. The results are compared with Maxwell stress tensor method estimated with finite element method.