When designing a universal finite element software for analyzing a permanent magnet synchronous motor,the relative position of the stator and rotor remains unknown.However,determining the relative position is a precon...When designing a universal finite element software for analyzing a permanent magnet synchronous motor,the relative position of the stator and rotor remains unknown.However,determining the relative position is a precondition for electromagnetic field calculation.Through analyzing the basic relationship of variables in a synchronous machine,the characteristics of an air-gap-resultant electromotive force and an inner power angle under a special inner power factor angle are obtained.A method similar to inverse problem solving is proposed.A series of electromagnetic field calculation under different armature current initial phase angles are carried out,and through searching the field of a special inner power factor angle,the relative position of the rotor and the stator can be determined subsequently.展开更多
文摘When designing a universal finite element software for analyzing a permanent magnet synchronous motor,the relative position of the stator and rotor remains unknown.However,determining the relative position is a precondition for electromagnetic field calculation.Through analyzing the basic relationship of variables in a synchronous machine,the characteristics of an air-gap-resultant electromotive force and an inner power angle under a special inner power factor angle are obtained.A method similar to inverse problem solving is proposed.A series of electromagnetic field calculation under different armature current initial phase angles are carried out,and through searching the field of a special inner power factor angle,the relative position of the rotor and the stator can be determined subsequently.
