Fabrication and Evaluation of VR Resolver Using Sheet Coils

Abstract

　This paper deals with research and development on a VR resolver with sheet coil structure that is thinner than the conventional VR resolver. The main topic of the paper is to propose a structure in which the rotor is sandwiched between upper and lower stators, changing the laminated electrical steel plate to dust core to use the core at high frequency operation, and proposed a theory to improve angle accuracy. Compared to conventional resolvers, the 4X-VR resolver decreased to 43% at the transformation ratio, and the variation width of the angular accuracy was 1.99 times.