Magnetic gearbox with an electric power output port and fixed speed ratio for wind energy applications

A. Abdel-Khalik, S. Ahmed, A. Massoud, A. Elserougi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Scopus citations


Mechanical gearboxes are typically employed with doubly-fed induction generator-based wind turbines. The main drawback of this solution is the gearbox's reliability and maintenance. Using magnetic gearbox in conjunction with the doubly-fed induction generator is an emerging alternative being promoted by the research community which maintains the reduced size doubly-fed machine and overcomes the mechanical gearbox problems reported by field experience. This paper proposes a novel magnetic gearbox configuration in which a conventional planetary magnetic gearbox is equipped with n-phase coils fitted around the ferromagnetic pole-pieces to extract output electrical power. The turbine mechanical power is thus divided into mechanical power to drive the electrical generator and extra electrical power that can be diverted into a storage system to perform the power leveling function. The proposed configuration can also be used to freely modify the power-speed characteristic as seen by the electrical generator, a highly needed feature for grid frequency support. © 2012 IEEE.
Original languageEnglish (US)
Title of host publicationProceedings - 2012 20th International Conference on Electrical Machines, ICEM 2012
StatePublished - Dec 14 2012
Externally publishedYes

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