Siemens Aktiengesellschaft

Wolfgang Wolter

Gerhard Matscheko

Zeljko Jajtic

Markus Knorr

Stefan Schiele

Elmar Schäfers

Dietmar Stoiber

Jens Hamann

Johannes Wollenberg

Holger Hoffmann

Jürgen Krejtschi

Roland Schultheiss

Wolfram Behr

The aim of the invention is to provide pivoting and rotary drives for electric machines with low number of parts economically. Said aim is achieved, by means of a secondary part () of circular or arched design. The primary part of the drive has at least two straight primary part segments (), arranged at a predefined angle to each other in the longitudinal direction thereof to correspond to the shape of the secondary part (). A pivoting or rotary drive can thus be economically produced with standard linear motor components.

Rotary drive with straight primary part segments

An electrical roller drive which can be connected to a roller includes a disk-type motor with a secondary part in the form of a disk and with a primary part in the form of a disk.

Electrical direct drive for a roller

A drive apparatus with at least one synchronous motor, a converter and a mechanical energy buffer able to be fed from an energy supply network, which, for converting mechanical energy into electrical current, includes a first asynchronous machine, and a method of operation for such a drive apparatus are specified, with which or in which the energy buffer, especially its first asynchronous machine is directly electrically connected via a switchover device to the at least one synchronous motor, so that the converter included in the drive apparatus is bypassed for such a switch position of the switchover device and the converter accordingly does not have to be designed for currents which flow in such a switch position of the switchover device.

Drive apparatus and method for its operation

A machine includes a moving part and a direct drive for moving the moving part. The direct drive includes a stator and an armature unit which interacts with the stator. A coupling device couples the armature unit to the moving part to allow a movement of the moving part in relation to the armature unit. The direct drive further includes a spacer device to maintain a distance between an active region of the stator and an active region of the armature unit, thereby defining the air gap between the stator and the armature unit.

Machine with direct drive

The invention relates to a module () for primary parts () of synchronous motors () which are excited by permanent magnets, which comprise at least one secondary part () which is at least sectionally devoid of permanent magnets. Said secondary part () is made of an iron structure comprising teeth () which leads to the primary part (). Said module () comprises at least one permanent magnet () and at least one iron rod () which is arranged on the opposite sides. Recesses () are arranged between the iron rod () on one side and at least one winding () is guided about the iron rod (). An additional module () can be secured at least to one side of the module () such that the iron rod () engages in the recesses () of the adjacent module () and the modules () can be placed together in relation to various predetermined primary parts ().

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Herbertshausen, Germany

Wolfgang Wolter