A linear motor system comprises a plurality of stator elements that have one or more magnetic coils for generating a magnetic flux in the respective stator element and at least one mover that has at least one magnetic element that interacts with the magnetic coils of the stator elements. The mover is moved by means of activation of at least one stator element in a direction of movement relative to the stator elements. At least one selected stator element is configured to change with respect to the magnetic flux from a first state into a second state or to have the second state permanently while at least some of the other stator elements remain in the first state so that the selected stator element exerts a braking and/or holding force on the mover in the second state.

In a motor including an armature, and a field system having a main pole magnetized in first directions in which a distance from the armature is defined and a sub-pole adjacent to the main pole in second directions orthogonal to the first directions and magnetized in the second directions and forming a Halbach array, a first dimension of the main pole in the second directions, a second dimension of the main pole and the sub-pole in the first directions, and a third dimension as a sum of the dimensions of the main pole and the sub-pole in the second directions are determined according to a flux content generated in a surface of the field system at the armature side.

A planar drive system comprises a stator and a rotor. The stator comprises a plurality of stator conductors. The rotor comprises a magnet device comprising at least one rotor magnet. The stator is configured to energize the stator conductors. A magnetic interaction can be produced between energized stator conductors of the stator and the magnet device of the rotor in order to drive the rotor. The stator is configured to carry out the energizing of the stator conductors by a current control based on a pulse-width modulation. Due to the current control, a ripple current in energized stator conductors of the stator and thereby an alternating magnetic field can be generated. The rotor comprises at least one rotor coil in which an alternating voltage can be induced due to the alternating magnetic field.

Various embodiments associated with a segmented magnetic core are described. The segmented magnetic core can be made up of multiple singular structures so as to allow an individual singular structure to be removed with ease and without disturbing another magnetic core. This modular core design allows for a significant reduction in motor housing weight due to compatibility of the design with lightweight materials and the potential absence of extensive housing when so designed. This modular core design can be incorporated into a motor or a generator and this modular core design can be accomplished, in one example, by way of stacking and/or interlocking employing low cost assembly. In one example, a motor or a generator uses sensors to detect an operational failure in a magnetic core, notifying a user early of the failure.

A stator module for two-dimensionally driving a rotor having first and second magnet units includes a stator assembly with first and second stator segments configured for interacting with drive magnets of the first and second magnet units. The individual stator segments can each be energized independently from the remaining stator segments. The stator assembly includes first, second, third and fourth stator sectors. The first stator segments of the individual stator sectors each extend in a second direction over all second stator segments of the relevant stator sector, arranged side by side, and the second stator segments of the individual stator sectors each extend in a first direction over all first stator segments of the relevant stator sector arranged side by side. Extensions of the stator sectors in the first and second directions are respectively smaller than extensions of a magnet arrangement including the first and second magnet units.

A linear motor/generator/transmission system includes a guideway with rails and a plurality of stator cores and coils evenly disposed along the length and in the center of the guideway. The system also includes a carriage configured to travel along the guideway having at least two magnet bars with alternating pole magnets, each successive magnet of each magnet bar mounted in front of the other in a direction of travel of the carriage. In embodiments, the magnet bars are mounted parallel to and on either side of a longitudinal centerline of the carriage such that, when adjacent to the center line and each other, the at least two magnet bars are positioned over the stator coils and are configured to be slidably translated away from the center line of the carriage to a position where the at least two magnet bars are not over the stator coils.

A linear positioning platform and a linear positioning system based on magnetic transmission are disclosed. The linear positioning platform includes a moving magnetic linear motor module and a magnetic transmission linear positioning module. The moving magnet linear motor module includes a base, a stator coil, a first yoke, and motor poles. There is a gap between the stator coil and motor pole. The magnetic transmission linear positioning module includes first mover poles, a magnetizing skeleton, a plurality of magnetizing blocks, a second yoke, and second mover poles. There is a gap between the first mover pole and magnetizing block and also between the magnetizing block and second mover pole. The linear positioning platform and linear positioning system have the characteristics of low cost, compact structure, high utilization rate of permanent magnets, high speed, high precision, high dynamic response, etc., which greatly promotes the development of related fields.

An elevator system has an elevator shaft, an elevator car and a drive device for displacing the elevator car within the elevator shaft. The drive device is a linear motor that has a stationary part secured to a shaft wall of the elevator shaft and a movable part secured to the elevator car. The drive device has an air bearing between the stationary part and the movable part that keeps the stationary part spaced apart from the movable part via an air gap therebetween.

A rotor for a long-stator linear motor system comprises at least three rollers for mounting the rotor on one or more guide rails of the long-stator linear motor system, the at least three rollers comprising a first roller that engages with an upper part of a first guide rail of the one or more guide rails, a second roller that engages with a lower part of the first guide rail, and a third roller that a) is rotatably mounted to at least one rotatable bolster of the rotor or b) comprises a steering rotational axis with an integrated castor.

In order to provide a transport unit for a long stator linear motor, wherein the orientation thereof can be easily determined on the long stator linear motor during operational use, according to the invention, the transport unit (1) has a first guide side (FS1) on which a first guide group (G1) is arranged and a second guide side (FS2) on which a second guide group (G2) is arranged. A first magnetic side (S1) positioned laterally relative to the longitudinal direction (x) is opposite a second magnetic side (S2), wherein the first magnetic side (S1) has a magnetic variable with a first value (w1) at a first test distance (a1) from the center of the first longitudinal extension (I1) in the direction of the first end (I1e), and on the first magnetic side (S1), a magnetic variable with a second value (w2), corresponding to the first value (w1), at the first test distance (a1) from the center of the first longitudinal extension (I1) in the direction of the first start (I1a). On the second magnetic side (S2), the transport unit (1) has a magnetic variable with a third value (w3) at a second test distance (a2) from the center of the second longitudinal extension (I2) in the direction of the second end (I2e), and a magnetic variable with a fourth value (w4), corresponding to the third value (w3), at the second test distance (a2) from the center of the second longitudinal extension (I2) in the direction of the second start (I2a), wherein the first and second values (w1, w2) differ from the third and fourth values (w3, w4).