Design and Realization of a Coreless and Magnetless Electric Motor using Magnetic Resonant Coupling Technology

Ming Liu, Ka Wing Chan, Jiefeng Hu, Qifang Lin, Junwei Liu, Wenzheng Xu

Research output: Journal article publicationReview articleAcademic researchpeer-review


Electric motors have a wide range of applications in a diverse range of industries. This paper presents a novel magnetic resonant coupling motor (MRCM), constructed without any iron or permanent-magnet core, i.e., a novel coreless and magnetless electric motor. Different from the conventional operation principle of existing electric motors, the application of the wireless power transfer system using magnetic resonant coupling technology is the key feature of the proposed MRCM. By adjusting the excitation frequency in accordance with the trajectory of resonant frequency splitting, a large electromagnetic force in different direction can be developed. Besides, the proposed MRCM has an inherent merit of unity power factor. This paper presents a new design concept, which could well be a promising start for a new generation of future electric motor.
Original languageEnglish
Pages (from-to)1200-1212
JournalIEEE Transactions on Energy Conversion
Issue number3
Publication statusPublished - Sep 2019

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