Effects of Rotor Pole Number and Winding Layout on Position Sensing Precision for Submarine Transport

Zare, Fateme; Tootoonchian, Paria

doi:10.22034/jmstsd.2026.578985.1003

Effects of Rotor Pole Number and Winding Layout on Position Sensing Precision for Submarine Transport

Articles in Press

Document Type : Original Article

Authors

Fateme Zare ¹

Paria Tootoonchian ²

¹ Department of Electrical and Computer Engineering, Isfahan University of Technology

² Farzanegan 4 High School, Tehran, Iran

10.22034/jmstsd.2026.578985.1003

Abstract

A resolver is a type of position sensor widely used in industrial applications, particularly in high-performance transportation systems such as electric vehicles and submarines. Among various types of resolvers, variable reluctance resolvers are highly popular due to their simple structure (lack of windings on the rotor) and high reliability. These resolvers are made in two types: one with a sinusoidal rotor cross-section and the other with a sinusoidal air gap length rotor. This paper investigates the effect of changes in the stator and rotor pole number, as well as the influence of stator winding configurations (concentrated and distributed), on the performance of a sinusoidal rotor resolver. It is observed that increasing the stator and rotor poles leads to higher resolver accuracy. Additionally, the distributed-winding resolver exhibits lower error than the same resolver with concentrated windings, due to the more sinusoidal magnetic flux distribution. The analyses are performed using 3D transient finite element simulations and are subsequently validated through experimental testing on a fabricated resolver prototype.

Keywords

Concentrated Winding

Distributed Winding

Sinusoidal Rotor Resolver

Variable Reluctance Resolver

Subjects