Abstract: A safety gear arrangement for an elevator system, comprising a safety gear mechanism comprising at least one wedge portion of the safety gear arrangement, wherein, in a normal position, the at least one wedge portion is retracted and, in an operated position, extended by a first spring element for acting on a guide rail of the elevator system, and a triggering device comprising an electromagnet, a second spring element, an actuating member, and an excitation power input, wherein the electromagnet is arranged, while being supplied with excitation power, to maintain the actuating member in an untriggered position against the second spring element, and the actuating member is arranged to operate the safety gear mechanism in response to moving of the member from the untriggered to a triggered position due to the second spring element.

Abstract: A method for manufacturing a magnetic core of an electric machine is presented. The method comprises defining at least one characteristic of magnetic flux for each of at least two portions of the magnetic core, determining types for each of the at least two portions of the magnetic core based on the defined at least one characteristic representing the corresponding portion of the magnetic core, and obtaining or producing the magnetic core comprising the at least two portions having the determined types.

Abstract: The invention relates to a multicar elevator system, comprising: a plurality of elevator cars; an elevator shaft system; the plurality of the elevator cars and the elevator shaft system comprising a plurality of elevator components; a controller; the multicar elevator system further comprising: an elevator maintenance system configured to: receive the measurement data; determine the operational condition of the respective elevator component; and generate a maintenance signal for the at least one elevator component, a maintenance is scheduled in accordance with the operational condition of the respective at least one elevator component before a failure of the at least one elevator component. The invention also relates to a method and a computer program product.

Abstract: A safety gear arrangement for an elevator system, comprising a safety gear mechanism comprising at least one wedge portion of the safety gear arrangement, wherein, in a normal position, the at least one wedge portion is retracted and, in an operated position, extended by a first spring element for acting on a guide rail of the elevator system, and a triggering device comprising an electromagnet, a second spring element, an actuating member, and an excitation power input, wherein the electromagnet is arranged, while being supplied with excitation power, to maintain the actuating member in an untriggered position against the second spring element, and the actuating member is arranged to operate the safety gear mechanism in response to moving of the member from the untriggered to a triggered position due to the second spring element.

Abstract: A radial flux permanent magnet elevator motor includes a motor frame forming the stator frame having fixing points to be fixed to an elevator guide rail, which frame has a back wall facing and/or abutting with the guide rail, which motor frame includes an axially extending flange protruding away from the back wall in the direction of the rotor, and which motor frame includes at least one axially extending first wall section in a defined radial distance from the axis of the motor frame, which first wall section is configured to support a stator winding of the motor.

Abstract: A linear flux switching permanent magnet (FSPM) motor includes a longitudinal linear stator with stator teeth facing an air gap and a mover including at least one armature with armature teeth, whereby at least some of said, preferably all of said armature teeth embed at least one permanent magnet, respectively, which armature teeth are spaced apart by slots for receiving an armature winding. The permanent magnets embedded in the corresponding armature teeth protrude by an overhang over the back of the armature in a direction facing away from the air gap.

Abstract: An electric linear motor, an elevator and a method for controlling rotation of a mover with respect to a stator beam are presented. The electric linear motor includes a number of stator beams, wherein at least one of the stator beams includes a plurality of stators extending in a longitudinal direction of the stator beam, a number of movers, wherein at least one of the movers includes a plurality of armatures, wherein each one of the armatures is adapted for establishing an electromagnetic coupling with a corresponding one of the stators for moving the mover along said stator, and wherein at least one of the armatures is arranged to be offset from the aligned position with respect to the corresponding one of the stators in a perpendicular direction relative to the longitudinal direction.

Abstract: A method for operating, such as commissioning, an elevator, and an elevator are presented herein. The elevator comprises an electric linear motor for moving movable units. The method comprises moving a first movable unit along a linear stator of the electric linear motor in the elevator shaft, and determining at least one characteristic, such as a floor position or an air gap width of the electric linear motor, at a plurality of elevator shaft positions by the first movable unit, such as by a winding, a coil, or a sensor, during the moving. The method further comprises storing the determined at least one characteristic, and controlling moving of at least a second movable unit, such as comprising another of the elevator cars or a second motor unit, by utilizing the stored at least one characteristic.

Abstract: An electric linear motor, an elevator and a method for controlling rotation of a mover with respect to a stator beam are presented. The electric linear motor includes a number of stator beams, wherein at least one of them includes stators extending in a longitudinal direction of the beam. The motor also includes a number of movers, wherein at least one them includes armatures, wherein each armature is adapted for establishing an electromagnetic coupling with a corresponding stator for moving the mover. The motor also includes an air gap regulator for regulating movement of the mover with respect to the stator beam, wherein the air gap regulator includes guide element(s) arranged for limiting the rotation of the mover with respect to the stator beam.

Abstract: A linear motor includes a stator and a mover adapted to move along the stator, one of them including non-magnetic core coils arranged in a row in a longitudinal direction. The other of the stator and the mover includes permanent magnets arranged in at least two adjacent rows in a longitudinal direction. The rows of permanent magnets are separated by a gap(s) dimensioned for receiving the row(s) of coils. At least one of the rows of permanent magnets may be arranged in a form of a Halbach array. The elevator may include an elevator shaft and an elevator car arranged to be moved by the linear motor in the elevator shaft.

Abstract: The invention relates to a conveyor for passengers and/or goods, the conveyor comprising at least one linear electric motor formed by linear stator beams with stator poles being located in a fixed correlation to an environment, and at least one mover co-acting and moving along the stator beams, the stator beams comprising at least a first stator beam extending in a first movement path in a first direction of the passenger conveyor and at least a second stator beam extending in a second movement path in a second direction of the passenger conveyor, wherein the first direction and the second direction are different directions, selected from the group of horizontal, inclined and vertical direction, and which mover is adapted to face the respective stator poles of the stator beam, wherein the mover has at least one winding arranged to co-act with the stator poles; the linear motor being controlled by a motor drive, which is controlled by a drive control.

Abstract: The invention relates to an electric linear motor for a transport system, the electric linear motor being formed by at least one linear stator rail with stator poles being located in a fixed correlation to an environment, and at least one mover co-acting and moving along the stator rail, the linear stator rail comprising at least one horizontal stator rail, having upper stator poles extending upwards from the horizontal stator rail and lower stator poles extending downwards from the horizontal stator rail. According to the invention at least one of the physical characteristic of the upper stator poles differs from that of the lower stator poles, as to cope with gravitational forces acting on the mover in normal direction of the horizontal stator rail.

Abstract: The invention refers to a linear electric motor comprising at least one linear stator having stator teeth, which stator is designed to be located in a fixed correlation to an environment and extending over a movement path and, the linear electric motor further comprising at least one mover co-acting with and moving along the stator. According to the invention at least the top portion of the stator teeth facing the mover is inclined with respect to the normal of the stator beam.

Abstract: A linear flux switching permanent magnet (FSPM) motor includes a longitudinal, linear stator with stator teeth facing an air gap and a mover including at least one armature including armature teeth embedding at least one permanent magnet, which armature teeth are spaced apart by slots for receiving an armature winding, and which armature teeth have an extended width portion towards the air gap. The extended width portion of the armature teeth begins in the longitudinal direction of the armature teeth already at the level of the armature windings.

Abstract: The invention refers to an electric linear motor comprising a longitudinal stator beam; at least one mover adapted to move along the stator beam; which stator beam comprises at least two side faces located at opposite sides of the stator beam, each of the side faces carrying ferromagnetic poles spaced apart by a pitch, and which mover comprises at least two counter-faces facing the respective side faces of the stator beam, wherein the at least two side faces, as well as the at least two counter-faces facing the respective side faces, are inclined or offset with respect to each other.

Abstract: An electromagnetic brake comprises an electromagnet arranged about a central axis SA; a slide movable with respect to the electromagnet in a slide actuation direction upon actuation of the electromagnet, and an air gap provided between the electromagnet and the slide through which a magnetic field passes when the electromagnet is actuated, wherein the slide is arranged radially inside or outside of the electromagnet with respect to the central axis SA. The electromagnetic brake is silent.

Abstract: A linear flux switching permanent magnet (FSPM) motor includes a longitudinal linear stator with stator teeth facing an air gap and a mover including at least one armature including armature teeth, which are spaced apart by slots for receiving an armature winding. At least some, preferably all of the armature teeth embed at least two permanent magnets, respectively, which are positioned successively in longitudinal direction of the tooth, whereby the two permanent magnets have different magnetic properties.

Abstract: The invention refers to an electric linear motor, control apparatus, transport system and a method. The electric linear motor comprises a longitudinal stator beam; at least one mover at least partially surrounding the stator beam and adapted to move along the stator beam; which stator beam comprises at least two side faces located at opposite sides of the stator beam, each of the side faces carrying ferromagnetic poles spaced apart by a pitch, and which mover comprises at least two counter-faces facing the respective side faces of the stator beam. The mover has in at least one of said counter-faces rotor units having at least one winding and at least one permanent magnet arranged to co-act with the ferromagnetic poles of the respective side faces of the stator beam.

Abstract: An electric linear motor, an elevator and a method for controlling rotation of a mover with respect to a stator beam are presented. The electric linear motor includes a number of stator beams, wherein at least one of the stator beams includes a plurality of stators extending in a longitudinal direction of the stator beam, a number of movers, wherein at least one of the movers includes a plurality of armatures, wherein each one of the armatures is adapted for establishing an electromagnetic coupling with a corresponding one of the stators for moving the mover along said stator, and wherein at least one of the armatures is arranged to be offset from the aligned position with respect to the corresponding one of the stators in a perpendicular direction relative to the longitudinal direction.

Abstract: An electric linear motor, an elevator and a method for controlling rotation of a mover with respect to a stator beam are presented. The electric linear motor includes a number of stator beams, wherein at least one of them includes stators extending in a longitudinal direction of the beam. The motor also includes a number of movers, wherein at least one them includes armatures, wherein each armature is adapted for establishing an electromagnetic coupling with a corresponding stator for moving the mover. The motor also includes an air gap regulator for regulating movement of the mover with respect to the stator beam, wherein the air gap regulator includes guide element(s) arranged for limiting the rotation of the mover with respect to the stator beam.