LINEAR DRIVE SYSTEM FOR DOWNHOLE APPLICATIONS

An apparatus for use in a borehole includes a rotor (140) having at least one set of magnetic elements (142), wherein a polarity of each magnetic element (142) is arranged to alternate along a long axis of the rotor (140); and a stator (130) in sliding engagement with the rotor (140), the stator (13...

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Bibliographische Detailangaben
Hauptverfasser:	TOSCHER, Steffen, FANINI, Otto N, TEGELER, Sebastian
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CONVERSION OR DISTRIBUTION OF ELECTRIC POWER DYNAMO-ELECTRIC MACHINES EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING ELECTRICITY FIXED CONSTRUCTIONS GENERATION MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Beschreibung
Zusammenfassung:	An apparatus for use in a borehole includes a rotor (140) having at least one set of magnetic elements (142), wherein a polarity of each magnetic element (142) is arranged to alternate along a long axis of the rotor (140); and a stator (130) in sliding engagement with the rotor (140), the stator (130) having a winding flowing current in a direction transverse to a long axis of the stator (130), the stator (130) having a core formed at least partially of laminations (133) aligned along a plane co-planar with the long axis of the stator (130), wherein energizing the winding causes relative sliding between the rotor (140) and the stator (130), the sliding being principally along the long axis of the rotor (140), and wherein the core includes a plurality of circumferentially distributed planar strips (132), each strip (132) being formed of the laminations (133).