a new subdomain method for performances computation in interior permanent-magnet (ipm) machines

In this research work, an improved twodimensional semianalytical subdomain based method for performance computation in ipm machine considering infinite/finitemagnetic material permeability in pseudocartesian coordinates by using hyperbolic functions has been presented. in the developed technique, all subdomains are divided into periodic or nonperiodic regions with homogeneous or nonhomogeneous boundary conditions (bcs), respectively. taking into account the appropriate interfaces conditions in the presented coordinates system, the machine performances including magnetic flux density, cogging/electromagnetic torque, backemf, and self/mutual induction have been calculated for three distinct values of softmagnetic material relative permeability (viz, 200, 800 and infin;). the semianalytical results are compared and confirmed by the fea results.