Design of Novel Variable Reluctance Resolver with Outer Rotor
Shuxin Nie, Ronggang Ni, Yawei Wu, Jingze Li, Ji Chen · 2019
The Variable Reluctance (VR) resolver is a kind of robust position sensor. In order to adapt to some special applications, a novel type of VR resolver with the outer rotor is designed in this paper. Firstly, the operation principles of VR resolver are introduced. Secondly, the advantages and disadvantages of different combinations of poles and slots are analyzed, and the number of poles and slots is determined as 2 and 8, respectively. At last, the output voltage harmonics are analyzed and reduced via optimally designed air gap function to enhance the detection accuracy. Different design scenarios are compared, and the effectiveness of the proposed design is verified via finite element analysis (FEA).