A Magnetic Actuator for a Magnetic Suspension System

Rafal P. Jastrzebski (Inventor), Alexander Smirnov, (Inventor), Olli Pyrhönen (Inventor)

Research output: Patent


A magnetic actuator comprises interconnected actuator elements (101-104) each comprising a core element (109) that comprises a center tooth section (110), side tooth sections (111, 112) on both sides of the center tooth section, and a yoke section (113) connecting the center and side tooth sections. Each actuator element further com- prises a winding (105) around the center tooth section. The magnetic actuator further comprises permanent magnets (114-117) in gaps between the yoke sections of adjacent ones of the core elements. The direction of magnetization of each of the permanent magnets is across the gap where the permanent magnet is located. As there are three teeth in each core element, decoupling is achieved so that magnetic flux caused by electric current in one actuator element does not significantly flow to other actuator elements. The permanent magnets generate bias magnetic fluxes which make the operation of the magnetic actuator more linear.

Original languageEnglish
Patent numberWO2016207492
IPCF16C 39/ 06 A I
Priority date26/06/2015
Publication statusPublished - 29 Dec 2016
MoE publication typeH1 Granted patent

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