Design of a sandwiched flux switching permanent magnet machine with outer-rotor configuration

Abstract

In this paper, a new flux switching permanent magnet machine(S-FSPM) with an outer-rotor configuration is proposed, which termed as sandwiched flux switching permanent magnet machine(S-FSPM). The prominent characteristics of the new S-FSPM machine is that the two pieces of PMs mounted in the same stator pole with an optimized angle is able to improve magnet usage efficiency and maximum output torque. Firstly, the operation principle of the new 6/22-pole S-FSPM machine has been proposed. To evaluate the performance of the new S-FSPM machine, a conventional 12/22-pole machine has been proposed in terms of flux-linkage, back EMF, output torque, and motor Efficiency. By theoretical analysis and twodimensional (2-D) finite element analysis (FEA), verified that the motor efficiency, the magnet usage efficiency and the output torque have been improved significantly. Index Terms -Sandwiched Flux switching permanent magnet machine, outer-rotor, output torque, finite element analyze.

Solving Partial Derivation Equations in Detail in Double- Rotor Flux Switching Permanent Magnet with H-Shape Stator Machines to Obtain Magnetic Flux Density

“…In [38], a prototype of a high-power three-phase 12-stator-slot/10rotor-pole FSPM motor for hybrid electric vehicles (HEVs) is designed by FEM. In [39], a new flux switching permanent magnet machine (S-FSPM) with an outer-rotor configuration is investigated by theoretical analysis and two-dimensional (2-D) FEM. Kim et al [40] have presented a new study on the comparison of dual-rotor single-stator (DRSS) and dual-stator single-rotor (DSSR) axial flux-switching permanent magnet machines by 3-D finite element analysis (FEA) and experimental verification.…”

High torque density design of a new outer-rotor hybrid excitation flux switching machine for in-wheel drive electric vehicle

“…An outer-rotor in-wheel configuration is one of the most suitable candidates due to the capability to provide higher torque density as compared with inner-rotor machines . In conjunction, permanent magnet (PM) brushless machine is the most successful machine that offers high torque and power density, low acoustic noise, low torque ripple, and high efficiency that meets the requirement for EVs propulsion system [1,2] . Over the last decade, research and development on flux switching machine (FSM) become an attractive research topic due to their some advantages of high torque/power density and robust rotor structure which a combination advantages of brushless PM machines and switched reluctance machines (SRM) [3] .…”

Subdomain method for brushless double-rotor flux-switching permanent magnet machines with yokeless stator

“…In [17], a sample of a high-power three-phase 12-stator-slot/10-rotor-pole FSPM motor used for hybrid electric vehicles is designed by FEM. In [18], a new flux switching permanent magnet machine (S-FSPM) with an outer-rotor configuration is studied by theoretical analysis and two-dimensional (2-D) FEM. In [19,20] 2-D analytical method is implemented to predict electromagnetic quantities for FSPM by using Maxwell equations.…”

Sub-Domain Method for Brushless Double-Rotor Flux-Switching Permanent Magnet Machines with Yokeless Stator

“…In [17], a sample of a high-power three-phase 12-stator-slot/10-rotor-pole FSPM motor used for hybrid electric vehicles is designed by FEM. In [18], a new flux switching permanent magnet machine (S-FSPM) with an outer-rotor configuration is studied by theoretical analysis and two-dimensional (2-D) FEM. In [19,20] 2-D analytical method is implemented to predict electromagnetic quantities for FSPM by using Maxwell equations.…”