Electromagnetic analysis of a wind turbine magnetic gearbox

Abstract

The design of the second stage of a 59:1 multi-stage magnetic gearbox for a wind turbine demonstrator is presented. The multi-stage series-connected magnetic gearbox is composed of a 6.45 first stage and 9.14 second stage. A flux-focusing spoke-type rotor typology is used with a unique segmented fully laminated design. The impact of structural design changes is considered with respect to torque density. A new rotor typology is presented that enables the magnetic gearbox to be mechanically assembled first without magnets.

Keywords

• laminations
• wind turbines
• rotors
• wind power plants
• magnetic gears
• electromagnetic analysis
• wind turbine magnetic gearbox
• multistage magnetic gearbox
• wind turbine demonstrator
• multistage series-connected magnetic gearbox
• flux-focusing spoke-type rotor typology
• unique segmented fully laminated design
• 59:1 multistage magnetic gearbox
• structural design
• torque density
• time 9.14 s