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Siemens Aktiengesellschaft

J. M. Voith Gmbh

Rheinmetall Gmbh

Herbert Weh

Hardo May

Markus Loffler

Klaus Schuler

Karl Mascher

Wolf Rüdiger Canders

Hartmut F Griepentrog

Holger Gerhard Wisken

Andreas Arndt

A magnetic linear drive has a coil in whose interior the current can produce a magnetic flux in an axial directions, having an armature which can move only at right angles to the axial direction and which has a magnetically active part which is magnetized, in particular, parallel to, but in the opposite direction to, the axial direction. The armature is driven by a current surge which accelerates the magnetically active part toward the coil center irrespective of its initial position.

Magnetic linear drive

In order to achieve high potency for magnetic circuits together with a favourable possibility of constructing them in four-phase and two-phase form using radially positioned permanent magnets in flux concentration mode, it is proposed to introduce E-shaped stator pole elements with at least one fanned-out limb each. This gives the most favourable utilisation of the permanent magnets together with high functionality with a view to the maximum obtainable rotor diameter and favourable component manufacture. Both four-phase and two-phase machines may be constructed with the same pole elements. For exclusively two-phase windings there is a possibility of shortening the distance between the part-rotors.

Machine with transverse flux

An electromagnetic accelerator arrangement includes a stationary arrangement including at least one stationary primary coil, and a movable arrangement including at least one moveable secondary coil. The planes of the stationary and the moveable coils are parallel to a direction of movement of the moveable arrangement. The coils of the stationary and the movable arrangements have approximately the same coil width in the direction of movement of the moveable arrangement and transversely thereto, as well as the same coil separation in the direction of movement of the moveable arrangement. The at least one stationary primary coil includes at least two layers between which the at least one secondary coil of the movable component is movably disposed, the distance between the layers being kept small transversely to the direction of movement of the moveable arrangement.

Electromagnetic accelerator in flat coil arrangement

Rotating machine with a rotor (44) with an inductor of an electrical radial field machine (48) arranged on the rotor (44), which radial field machine is designed for absorption of the radial bearing forces acting on the rotor, and with an inductor of an axial field machine (46) arranged on the rotor (44), which axial field machine is designed for absorption of the axial bearing forces acting on the rotor. For normal force control, means for field control with the aid of current influencing are provided in the stators of the two electrical machines, which for their part are each subdivided into four quadrants with their own regulating units. The two electrical machines (46, 48) are of multipole design, there being at least two poles per winding quadrant. The axial field machine (46) is provided with three controllers for the stabilization of three degrees of freedom and the radial field machine (48) is provided with two controllers for the stabilization of two degrees of freedom.

Machine with magnetic-borne rotor and electrical radial field

Transversal flow machine in accumulator arrangement

An electrical machine, which may be designed as a rotating machine or as a linear drive, includes a stationary part having an odd number multiphase winding (preferably five or seven phases), and a movable part separated from the stationary part by an effective gap. Each pole of the movable part includes two pole portions which diverge from each other in the direction away from the effective gap and between the end regions of which at the effective gap a magnetically non-conductive separating gap is provided which is greater than the effective gap. In such a machine, which is characterized by a permanent excitation in the movable part, there is provided between the proximate pole portions of each of adjacent poles a respective permanent magnet, the direction of flux of each permanent magnet being directed oppositely to the direction of flux of each adjacent permanent magnet. Each rotor pole portion may be formed of a plurality of pole laminations the planes of which are oriented either transverse to or in the direction of motion of the movable part, the laminations being separated by non-magnetic spaces, and at the face of each rotor pole adjacent to the effective gap a magnetically effective enlargement of that gap is provided which extends over at least one slot pitch of the stationary part.

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Braunschweig, Germany

Herbert Weh