Mahle International Gmbh

Thorsten Grelle

Michael Krappel

Benjamin Weimann

Johannes Diekmann

Penyo Topalov

Philipp Zimmerschied

Gunnar Schmitt-Sauter

Peter Kozlowski

An inductively electrically excited synchronous machine is disclosed. The synchronous machine includes a rotor including at least one rotor coil for generating a magnetic rotor field, a stator, on which the rotor is rotatably mounted about an axis of rotation, and including at least one stator coil for generating a magnetic stator field, and a rotary transformer for inductively transmitting electrical energy to the at least one rotor coil. The rotary transforming includes at least one stator-fixed transformer primary coil and at least one rotor-fixed transformer secondary coil. A machine controller is coupled to the stator coil and to the at transformer primary coil for operation as a motor and/or as a generator. A demagnetizing circuit is provided that includes at least one dynamo winding arranged on the stator. The demagnetizing circuit has at least one switching device for activating and deactivating the demagnetizing circuit.

Inductively electrically excited synchronous machine

A liquid pump for conveying a liquid may include a housing, in which a pump impeller is arranged for conveying the liquid, and a cover for covering the housing. The cover may include a main connector for supplying a main flow of the liquid to the pump impeller and an auxiliary connector for supplying an auxiliary flow of the liquid to the pump impeller. The housing may have an inlet opening for the liquid and an annular collar protruding from an edge of the inlet opening. The cover may lie axially against the annular collar. The annular collar and the cover may define an annular wall surrounding a flow path of the main flow of the liquid. The annular wall may have at least one radial opening connecting the flow path with an inflow space surrounding the annular wall. The auxiliary connector may be fluidically connected with the inflow space.

Liquid pump

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Karlsruhe, Germany

Thorsten Grelle