Siemens Aktiengesellschaft

Holger Schunk

Rolf Vollmer

Erich Bott

Matthias Braun

Axel Knauff

Albrecht Storath

Andreas Tschanter

Reiner Seufert

Daniel Mader

Detlef Potoradi

Wolfgang Schneider

Klaus Georg

Peter Kress

A laminated core for a rotor and/or a stator of a rotating electric machine includes teeth arranged adjacent to one another in a peripheral direction of the laminated core and delimiting slots for accommodating an electrical conductor that forms a winding. A cover unit is arranged on a side of an air gap between the rotor and the stator and delimits the slots in the radial direction. The cover unit has in a region of a respective one of the slots at least two tapering regions which are spaced apart from one another in the peripheral direction of the laminated core, with a material of the cover unit being thinner in the tapering regions in a radial direction of the laminated core than in a region of the cover unit adjoining the tapering regions.

Laminated core for an electric machine

An individual tooth segment includes a tooth head configured for connection in a form-fitting manner to a tooth head of a further individual tooth segment. The tooth head has a first flank formed on a left end of the tooth head as viewed in a radial direction and configured concavely with a first curvature, and a second flank formed on a right end of the tooth head as viewed in the radial direction and configured convexly with a second curvature. The tooth head has a center of area which is a center point of a circular arc of the second curvature of the second flank.

Individual tooth segment for a stator of a dynamoelectric rotational machine

In a rotary dynamo-electric reluctance machine, a rotor includes regions of differing magnetic resistances. One region includes material of a first magnetic conductivity. Another region includes material of a second magnetic conductivity which is lower than the first magnetic conductivity. The region having the second magnetic conductivity includes permanent-magnetic material to increase a torque of the reluctance machine.

Modified rotor of a reluctance machine for increasing torque

A drive device includes a rotational drive device with a rotating stator and a rotating armature for displacing a shaft in a rotational movement and a linear drive device with a linear stator and a linear armature for displacing a shaft in a linear movement. The rotational drive device and the linear drive device are arranged axially one behind the other, with the rotating armature and the linear armature being connected to a respective shaft section. The shaft sections of the rotating armature and the linear armature are axially aligned and connected to each other in a rotationally fixed manner such that the shaft sections can move axially with respect to each other but they can only rotate together.

Drive device for rotational and linear movements with decoupled inertias

The aim of the invention is to create a combined linear-rotary drive that has a compact, simple, and inexpensive design. Said aim is achieved by a combined drive comprising a linear driving device () and a rotary driving device (), at least one of the two driving devices being provided with a hybrid reluctance motor. It is particularly advantageous to embody both driving devices as hybrid reluctance motors such that the rotor () can be produced at a low cost without permanent magnets in addition to ensuring that the drive has a very compact design.

Combination drive with a hybrid reluctance motor

The invention relates to an electric machine which comprises a first machine part (), comprising a stator element () and a rotor element () and being configured as a rotary actuator which interacts with a rotary movement of the rotor element (). The electric machine () also comprises a second machine part (), comprising a primary part () and a secondary part () and being configured as a linear actuator which interacts with a linear movement of the secondary part (). The rotor element () of the first machine part () and the secondary part () of the second machine part () are interlinked. The secondary part () of the second machine part () can be rotated and is configured as an external rotor. Such a secondary part () allows to generate a higher power of a secondary machine part () acting as the linear motor. The secondary part () is mounted in the center thereof in relation to the primary part ().

Electric machine having a rotary and a linear actuator

The permanently excited synchronous machine () includes a rotor () and a stand () which contains a three-branched winding system () which comprises tooth coils. The stand () has a total of three or six grooves () and a tooth () is formed there between. A total of three tooth coils () are arranged in the grooves () and each coil is associated with one of the three winding phases. The number of user pole pairs (pN) is four or five. The rotor () has twice as many user pole pairs (pN) of permanent magnets () which are evenly distributed on the periphery.

Multipole permanent-magnet synchronous machine having tooth-wound coils

The drive device () is intended for a machine for the plasticization and injection of synthetic material. It comprises a main drive () drivable in a first and a second direction of rotation and having a hollow shaft () rotatable about an axis of rotation (). An axially bipartite inner reception region () having a first part region () and a second part region () is formed by the hollow shaft (). Rotation transmission means (), arranged at least partially in the first part region (), are provided for the transmission of a rotational movement of the hollow shaft () solely in a first direction of rotation to an extruder worm () rotatable about the axis of rotation (). Conversion means (), arranged at least partially in the second part region (), are provided for the transmission of a rotational movement of the hollow shaft () in the first and a second direction of rotation to a supporting shaft () rotatable about the axis of rotation () and displaceable axially in both directions and for the conversion of the transmitted rotational movement into an axial movement of the supporting shaft ().

Drive for a machine for synthetic material plasticization and injection

The aim of the invention is to provide a linear/rotation drive with an improved transmitter device for detecting the linear and rotational movements. For this purpose, the transmitter device () for detecting the linear movement and/or rotational movement of the secondary part () of the linear drive () configured as an external rotor is at least partially arranged inside the primary part () of the linear drive (). In this manner, the transmitter device () is located in a magnetically shielded area. In order to avoid eccentricities in the transmitted device (), a journal () of the secondary part () is mounted on a bearing () in the primary part ().

Rotary linear drive having a transmitter device

Disclosed is an electric machine () comprising a stator () that encompasses a winding system () with three winding branches, and a certain number of effective pole pairs. Each winding branch is provided with at least one coil group, each of which contains an even number of serially connected individual coils () that generate an individual magnetic field, respectively. Two respective individual coils () of a coil group are offset relative to each other in a circumferential direction of the stator () in such a way that the associated individual magnetic fields are provided with an offset electrical angle relative to one another at the sixth harmonic of the number of effective pole pairs, said offset electrical angle being equal to an odd multiple of 180&#xb0;.

Electrical machine comprising a winding system with coil groups

According to the invention, an improved copper filling in the slots () of a permanently-stimulated synchronous motor () may be achieved, whereby such a motor is disclosed, comprising a stator (), with parallel-edged slots (), provided with a winding system of flat wires (), whereby the flat wires () each enclose a tooth () and are embodied as a tooth coil (). The flat wires () are wound edgewise such that the narrower side of the flat wire () faces the tooth () and each tooth coil () comprises at least two layers of flat wires ().

Permanent magnet synchronous machine with flat-wire windings

An electric machine, in particular a motor, includes a winding support assembly and a measuring system, preferably an infrared measuring system, The measuring system has at least one sensor and an evaluation unit, whereby the measuring system is integrated in the winding support assembly. The infrared sensor, which operates without making contact with the winding support assembly, provides almost instantaneously a measurement value that is proportional to the actual temperature of the winding system, thereby significantly improving motor protection. The sensor can be embedded and sealed in the winding support assembly.

Electric machine with a winding support assembly and a measuring system

An electric machine includes a stator having slots of substantially rectangular cross section. The slots are subdivided into pairs of slots, with each pair of slots configured with parallel flanks, wherein teeth are formed between the slots and have alternating rectangular and triangular cross sections. Positioned on the teeth of rectangular cross section are tooth coils.

Electric machine

A drive system includes a rotary drive unit for rotating a shaft and a linear drive unit for moving the shaft in a linear direction. To improve efficiency and shelf life, an energy storage is mechanically connected to the shaft for biasing the shaft to seek a linear movement in opposition to the linear direction. The energy storage absorbs the kinetic energy of the shaft and releases it again subsequently.

Drive system for linear and rotary movements

A drive unit for operating a plastics injection machine includes a rotatably supported bushing intended for accommodation of an extruder screw and a rotor which includes a hollow shaft and is defined by an inner diameter sized to allow passage of the bushing and accommodated extruder screw through the rotor. The rotor is hereby detachably connected with the receiving member in fixed rotative engagement.

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Lendershausen, Germany

Holger Schunk