Molabo Gmbh

Volabo Gmbh

Universitaet Der Bundeswehr Muenchen

Florian Bachheibl

Adrian Patzak

Gurakuq Dajaku

Andreas Baumgardt

Dieter Gerling

Oleg Moros

Benjamin Rubey

Stefan Rossner

An electric drive () comprising an electric machine () is specified. The electric machine () comprises a stator () and a rotor () mounted so as to be movable with respect to the stator (), wherein the stator () comprises at least two first conductor sections () and at least two second conductor sections (), the stator () comprises at least one first short-circuiting means () and at least one second short-circuiting means (), the first conductor sections () are electrically connected to the first short-circuiting means (), the second conductor sections () are electrically connected to the second short-circuiting means (), and the first conductor sections () and the second conductor sections () are each designed to be supplied with a separate electric phase. Moreover, a supply system () for the electric drive () and a method of operating the electric drive () are specified.

Electric drive and method of operating the electric drive

A circuit arrangement () for supplying an electric vehicle with power comprises a battery () with a first terminal () and a second terminal (), and a reference potential terminal () directly connected to the second terminal () of the battery (). The circuit arrangement () further comprises a first output () that is coupled to the first terminal () of the battery () via a first switch () and that is configured to be connected to an electric machine () of the electric vehicle, and a second output () that is coupled to the first terminal () of the battery () and that is configured to be connected to a power net () of the electric vehicle. Furthermore, a power system () for an electric vehicle comprises the circuit arrangement (), an electric machine () and a power net (). The first output () is coupled to the electric machine () and the second output () is coupled to the power net ().

Circuit arrangement and power system

The invention relates to a conductor assembly for transmitting electrical power in a mobile system, in particular in a land, air or water vehicle, comprising an inner conductor () and an outer conductor () coaxially arranged thereto, which are electrically insulated from each other by means of an insulation layer ().

Conductor arrangement and transportable electrical drive device

An electric machine () comprises a stator (), which comprises at least two slots () in which each at least one electrically conductive bar () is arranged, respectively. The stator () is adjacent to an air gap () and the at least two electrically conductive bars () form an electric winding () of the stator () and are arranged to be supplied with a corresponding electrical phase (n), respectively, by a power supply (). Furthermore, the stator () is arranged in such a way that during operation of the electric machine () a stator magnetic field with at least two magnetic poles is formed in the air gap (), where at least a first pole () has a circumferential extent along the air gap () which is different from the circumferential extent of at least a second pole ().

Electric machine having a stator with magnetic poles of various circumferential extents

A battery () for an electric vehicle comprises a plurality of battery cells (), where a first group () comprises a plurality of battery cells () connected to each other in parallel, a second group () comprises a plurality of battery cells () connected to each other in parallel, and the first group () and the second group () are connected with each other in series forming a first line () of battery cells (). The battery () further comprises a first terminal () which is configured to be connected with an electric machine () and with a power net () of the electric vehicle, and a second terminal () which is configured to be connected with a reference potential (). The battery () is configured to supply the electric machine () and the power net () of the electric vehicle with power, and the electric machine () and the power net () are supplied with the same voltage level by the battery ().

Battery for an electric vehicle

A circuit arrangement () for controlling a stator winding () of a stator () of an electric machine () is provided. The stator winding () has at least four electrical phases (&#x3c6;), which are designed to be supplied with a separate phase current (I), respectively. A modulation signal (M) is assigned to each electrical phase (&#x3c6;) and the modulation signals (M) are out of phase with respect to one another so that the stator winding () is designed to generate a rotary field. At least two carrier signals (T) are provided for generating the phase currents (I), and the electrical phases (&#x3c6;) are divided into at least two groups, each of which is assigned a carrier signal (T). The carrier signals (T) have a phase shift (&#x3b8;) relative to one another. Furthermore, an electric machine () comprising a circuit arrangement () is provided.

Circuit arrangement and electric machine

The present invention relates to an electrical machine having a stator. The stator comprises a plurality of slots for receiving a stator winding. One respective conductor section of the stator winding is inserted into each slot. The conductor sections of at least one pair of poles are short-circuited to one another on a first side of the stator. The conductor sections on a second side of the stator, opposite from the first side, are each connected to a terminal of a power supply unit. The power supply unit consists of two annular electrical conductors, between which at least one power-electronics component is arranged.

Electrical machine

A winding system for a stator and/or a rotor of an electric machine is disclosed. The winding system comprises several conductor sections, two annular conductors (+, &#x2212;) on a first side of the winding system, to which the conductor sections are coupled by means of half bridges, and at least one half bridge on an opposite side of the winding system, to which at least one conductor section is connected.

Winding system

The invention relates to a power supply unit for supplying multiple conductor portions () of a stator winding of an electric machine which are inserted in respective slots (), wherein the power supply unit is configured to supply a first conductor portion and a second conductor portion with at least one different operating parameter of a respective current function and/or the power supply unit is configured to supply a conductor portion with at least two superimposed current functions, which in each case have at least one different operating parameter. Furthermore, the invention relates to an electric machine having such a power supply unit.

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Munich, Germany

Florian Bachheibl