STATOR ARRANGEMENT FOR AN ELECTROMAGNETIC LINEAR DRIVE

Abstract

A stator arrangement for an electromagnetic linear drive may include a plurality of stator coils that are arranged along a longitudinal direction of a stator. The stator arrangement may also include a plurality of converters that are configured, in each case, to supply at least one first stator coil and a second stator coil of the stator coils with electrical energy. Between the first stator coil and the second stator coil, at least one third stator coil of the stator coils is arranged, which is supplied by a different converter from the first stator coil and the second stator coil.

Claims

1.-13. (canceled)

14. A stator arrangement for an electromagnetic linear drive, the stator arrangement comprising: stator coils disposed along a longitudinal direction of a stator; and converters, wherein each of the converters is configured to supply a first stator coil and a second stator coil of the stator coils with electrical energy, wherein a third stator coil of the stator coils is disposed between the first and second stator coils, wherein the third stator coil is supplied with electrical energy by a converter that is different than a converter that supplies the first and second stator coils with electrical energy.

15. The stator arrangement of claim 14 comprising connection elements, wherein each of the connection elements is configured to supply a first converter and a second converter with electrical energy, wherein each of the first and second converters is configured to supply at least two of the stator coils with electrical energy, wherein those stator coils that are supplied with electrical energy via the same connection element form a first group of stator coils, wherein another stator coil that is disposed between two stator coils of the first group of stator coils is supplied via another connection element of the connection elements.

16. The stator arrangement of claim 15 comprising supply segments, wherein each of the supply segments comprises at least two supply components from the converters and the connection elements, wherein those stator coils that are supplied with electrical energy via the same supply segment form a second group of stator coils, wherein another stator coil that is disposed between two stator coils of the second group of stator coils is supplied via another supply segment of the supply segments.

17. The stator arrangement of claim 16 wherein the supply segments are individually mountable to the stator and/or individually removable from the stator.

18. The stator arrangement of claim 16 wherein each of the supply segments comprises a sensor element that is configured to deliver a sensor signal in response to a presence of a rotor at a given position on the supply segment, wherein the rotor is movable relative to the stator.

19. The stator arrangement of claim 16 wherein each of the supply segments comprises at least one of the converters.

20. The stator arrangement of claim 19 wherein at least one of the converters of one of the supply segments, in a transverse direction that is perpendicular to the longitudinal direction of the stator, is disposed at least partially away from a center of the one of the supply segments.

21. The stator arrangement of claim 15 comprising supply terminals, wherein each of the supply terminals is configured to supply a first connection element and a second connection element of the connection elements with electrical energy, wherein those stator coils that are supplied with electrical energy via the same supply terminal of the supply terminals form a second group of stator coils, wherein a further stator coil is disposed between two stator coils of the second group of stator coils, wherein the further stator coil is supplied via another supply terminal of the supply terminals.

22. The stator arrangement of claim 21 wherein each of the supply terminals comprises at least two supply lines.

23. The stator arrangement of claim 22 wherein the at least two supply lines comprise a redundant arrangement for supply of electrical energy to the supply terminals.

24. The stator arrangement of claim 14 wherein the stator coils are disposed along the stator such that the stator coils form a track for a rotor that is movable relative to the stator.

25. The stator arrangement of claim 14 at least partially oriented in a vertical direction and/or at least partially oriented in a horizontal direction, wherein the longitudinal direction is parallel to an orientation of the stator.

26. An elevator installation comprising the stator arrangement of claim 14.

Description

DESCRIPTION OF FIGURES

[0029] FIG. 1 shows a schematic representation of a section of an arrangement for the wiring of components in a section of a stator arrangement according to a preferred form of embodiment.

[0030] FIG. 2 shows a schematic representation of an elevator installation according to a preferred form of embodiment of the invention.

[0031] In the following figures, identical elements are identified by the same reference numbers, unless expressly indicated otherwise. Elements in the figures which have been described with reference to preceding figures, will not be described again in the interests of brevity, even if these descriptions also relate to elements represented in the further figures, unless indicated otherwise.

[0032] FIG. 1 shows a schematic representation of a section of an arrangement for the electrical cabling of electrical components in a section of a stator arrangement 18 according to a first preferred form of embodiment. In the interests of clarity, not all components are identified by reference symbols, but only a number of components of the same type, for exemplary purposes. For example, of the thirty-two stator coils 22 represented, only the eight upper coils are marked. The same applies correspondingly to the other components. Identical graphic symbols represent identical or equivalent electrical components. In the section represented, the stator arrangement 18 comprises a plurality of supply segments 10, which are arranged one above another along the longitudinal direction 100. Each of the supply segments 10 comprises two connection elements 12 here and four converters 14 wherein, via each of the two connection elements 12, two converters 14 respectively are connected or bonded. Via the connection elements 12, each of the supply segments 10 is bonded to a supply terminal 21 which, in turn, comprises two supply lines 20. Via the supply terminal 21, the supply segments 10 can be supplied with electrical energy and, optionally, with signal data. Each of the connection elements 12 is respectively supplied here with electrical energy by two supply lines 20 in a redundant arrangement such that, in the event of a malfunction and/or a failure of one of the supply lines 20, the connection elements 12 which are connected thereto can nevertheless be supplied with electrical energy via the other respective supply line 20 of the supply terminal 21.

[0033] Each of the four converters 14 per supply segment 10 is respectively connected to two stator coils 22 and, in turn, supplies these stator coils 22 with electrical energy. The four converters 14 represented at the upper end are also respectively connected to two stator coils 22 although, in the section of the stator arrangement 18 represented, only one respective stator coil 22 appears to be connected to the respective converters 14. The further overlying stator coils 22 are simply arranged outside the represented section of the stator arrangement 18. The two stator coils 22, which are connected to the same converter 14, are thus not adjacently or contiguously arranged, but are configured in a spaced arrangement such that, according to a preferred form of the embodiment represented, seven further stator coils 22 are arranged between the respective stator coils 22, wherein the intervening stator coils 22 are supplied with electrical energy by other converters 14. The two stator coils 22, which are connected to the same converter 14, are interconnected by means of a line 24. This type of arrangement of stator coils 22 or the cabling of stator coils 22 with converters 14 provides the advantage in that, in the event of a malfunction in and/or a failure of one converter 14, two adjoining stator coils 22 are not lost, but the lost stator coils 22 adjoin other stator coils 22 which are not affected by the failure of the converter 14. In the interests of clarity, the converter 14 and the two stator coils 22 which are connected to said converter 14 are represented by the same cross-hatching.

[0034] Moreover, also stator coils 22 which are supplied with electrical energy via the same connection element 12 and which are optionally supplied with electrical energy via the same supply segment 10, or the converters 14 of which stator coils are supplied via the same connection element 12, are not arranged directly next to one another but are arranged in a way that, in each case, other stator coils 22 are situated between the stator coils 22, which are supplied via another connection element 12, and optionally via another supply segment 10. This provides the advantage in that, in the event of a failure of a connection element 12 and/or of an entire supply segment 10, a plurality of directly adjoining stator coils 22 are not affected by the failure, but other stator coils 22, which are not affected by the failure, are arranged between the stator coils 22 which are affected by the failure. According to the form of embodiment represented, the connection elements 12 are configured as tap-off boxes.

[0035] In the absence of the failure and/or of the functional impairment of a plurality of directly adjoining stator coils 22, according to the preferred form of embodiment, the function and/or operation of the stator 18 can be maintained, such that a rotor can continue to be moved relative to the stator 18 and/or an uncontrolled movement of the rotor relative to the stator, specifically a falling, can be prevented notwithstanding the failure of a number of stator coils 22.

[0036] The horizontally offset representation of the stator coils 22 is specifically intended here to improve clarity, by way of the restriction of number of intersection points in the electric lines represented. A geometrical arrangement of stator coils 22 does not necessarily need to be offset. Preferably, the stator coils 22 are arranged in a row, such that said stator coils constitute a track for a rotor, which is to be moved along the stator 18. This is represented in FIG. 2.

[0037] FIG. 2 shows a schematic representation of an elevator installation 30 having a stator arrangement 18 and a rotor 34 which, by means of the stator arrangement 18, is moveable along the stator arrangement 18 along the longitudinal direction 100. The rotor 34 can be configured, for example, as a car.

[0038] The stator arrangement 18 comprises here a plurality of stator coils 22 arranged in a row along the longitudinal direction 100, each of which comprises a plurality of terminals 38 for the supply thereof with electrical energy. Each of the stator coils is supplied with electrical energy via a supply segment 10, or via a connection element 12, or via a converter 14 (see FIG. 1).

[0039] According to the form of embodiment represented in FIG. 2, the elevator installation 30 comprises a plurality of carrier elements 32, to which the stator coils 22 are preferably fastened. For example, the carrier elements 32 can comprise a rail system, which is fastened in an elevator shaft or to a wall.

[0040] The rotor 34 comprises at least one magnetic element 36, by means of which the rotor can interact with the magnetic fields generated by the stator coils 22, such that the stator 18, by means of these magnetic fields, can direct and/or control the position of the rotor, and specifically can move the latter along the longitudinal direction 100. For example, the at least one magnetic element 36 can comprise one or more permanent magnets.

[0041] The dimensions of the rotor 34 or of the least one magnetic element 36, and of the stator coils 22, according to the preferred form of embodiment, are such that the rotor 34, at any potential position along the longitudinal direction 100 of the stator, interacts with at least two stator coils 22. The elevator installation (30) is moreover preferably configured such that the position of the rotor 34 can be stabilized and/or controlled, and the latter can preferably be moved along the longitudinal direction 100 in a controlled manner, even by only one stator coil 22 such that the rotor 34, even in positions in which the latter is at least partially arranged adjacently to a failed or a malfunctioning stator coil 22, can be controlled and/or moved. This means that the interaction of the rotor 34 with only one stator coil 22 is sufficient to control and/or move the rotor, such that the operation of the elevator installation 30 can be maintained, even in the event of a failure of one stator coil 22 or of a plurality of non-adjoining stator coils 22.