Magnetic Slot Wedge Application Analysis in Double-fed Asynchronous Motor-generator by Finite Element Method

摘要

To eliminate high order space harmonics in double-fed asynchronous motor-generator, magnetic slot wedge application is introduced. A field-circuit finite element analysis model is proposed for precisely analysis the effect of magnetic slot wedge. And performance estimation methods using simulation result from finite element model are presented By applying proposed model and methods to prototype, effects of magnetic slot wedge on machine performance are investigated. The advantages of magnetic slot application are proved by calculation results. Comparison and discussion of different wedge group provides guidance of magnetic slot wedge design.