Robert Boschgmbh

Seg Automotive Germany Gmbh

Kurt Reutlinger

Gert Wolf

Paul Mehringer

Eberhard Rau

Alexander Mueller

Helmut Kreuzer

Volker Bosch

Klaus Herbold

Markus Heidrich

Christoph Schwarzkopf

Gerlinde Weber

Bruno Luescher

Sebastian Paulus

Torsten Baumann

Gerhard Koelle

Hubert Greif

Richard Schoettle

Alexander Shendi

Reinhard Rieger

Clemens Schmucker

Gerhard Walter

Beqir Pushkolli

Manuel Mueller

Miriam Riederer

Martin Neuburger

Wolfram Schock

Michael Wohlfarth

Karl-Juergen Roth

Reinhard Meyer

Marcus Alexander

Quang-Ngoc Tran

Peter Theisinger

Begir Pushkolli

Adrian Heinrich Sichau

Mohammad Nassar Albunni

Daniel Klis

Juergen Fridrich

Alexandra Wilde

Artem Babajanyan

Roberto Carlos Retana Hernández

An oscillatory driving device for a hand-held power tool includes at least one input shaft, at least one output shaft, and at least one gearing unit. The gearing unit operatively connects the input shaft to the output shaft and includes at least one eccentric element configured to drive the output shaft in an oscillatory manner. The gearing unit includes at least one further eccentric element configured to drive the output shaft in an oscillatory manner.

Oscillatory driving device

The invention relates to an electronically commutated electric machine () comprising: a rotor (); an exciting winding () that is located at the rotor () in order to generate or alter a direct magnetic field in the rotor (); a stator () comprising a three- or multi-phase stator winding () with phases that can be controlled via phase lines (). The exciting winding () is connected to the stator winding ().

Method and device for operating an electric machine having external or hybrid excitation

The invention relates to a method for detecting an error in a generator unit which has an electric machine () with a rotor winding (), a stator winding () transformer-coupled to the rotor winding (), and a rectifier () connected to said stator winding, via which the electric machine () is connected to an onboard power supply () of a motor vehicle, wherein a decision is made, depending on a magnitude of a correlation (K, K) between a curve of an excitation current (I) flowing through the rotor winding () of the electric machine () and a curve of a voltage drop (U, U) on one side of the transformer, as to whether the error is present or not.

Method for detecting an error in a generator unit

Method for producing a stator winding () of an electric machine (), in particular an AC generator, wherein the stator winding () has at least n phase windings (), and one phase winding () has a plurality of directly successive wound coils () with coil sides () and coil side connectors (), wherein the coils () are divided into first coils () and second coils (), with a forming tool (), in which slots (') are provided which are suitable for accommodating the coils (), wherein a first coil () is arranged in a slot (&#x2032;), and a second coil () is arranged in another slot (&#x2032;), characterized in that n&#x2212;1 slots (&#x2032;) are arranged between the first coil () and the second coil ().

Method for producing a stator winding of an electric machine, in particular an AC generator

The invention relates to a synchronous machine with hybridenergisation, in particular a generator for supplying the electrical system of a motor vehicle, comprising a laminated stator () with a multiphase stator winding () and a laminated rotor () with an energizer winding (), which together with permanent magnets () around the rotor periphery, provides the energisation for the machine. According to the invention, favorable electrical and magnetic properties and an improvement in manufacturing conditions of the machine can be achieved, wherein the grooves () for the energiser windings () are disproportionately enlarged in relation to the groove base () and are preferably bell-shaped.

Electric machine

Method for producing a stator winding () of an electric machine (), in particular an AC generator, wherein the stator winding () has at least n phase windings (), and one phase winding () has a plurality of successive wound coils () with coil sides () and coil side connectors (), wherein the coils () are divided into first coils () and second coils (), with a forming tool (), in which slots () are provided which are suitable for accommodating the coils (), wherein a first coil () is arranged in a slot (), and a second coil () is arranged in the same slot ().

Method for producing a stator winding of an electric machine, in particular for producing an AC generator

In a method for determining current in a polyphase machine connected to a DC voltage source, a DC link is provided with a DC-link capacitor and, per phase, a high-side switch and a low-side switch. A measurement of the voltage curve across the DC-link capacitor is undertaken. The current of the DC voltage source and/or one or a plurality of phase currents are/is determined from the measured voltage curve.

Method for determining current in a polyphase machine

The invention relates to a method for producing a stator winding () of an electric machine (), in particular of an alternator, the stator winding () comprising at least n phase windings () and a phase winding () having several directly consecutively wound coils () having coil sides () and coil side connectors (), the coils () being divided into first coils () and second coils (), by means of a forming tool (), in which grooves (') suitable for accommodating the coils () are provided, a first coil () being arranged in one groove (&#x2032;) and a second coil () being arranged in another groove (&#x2032;), characterized in that n&#x2212;1 grooves (&#x2032;) are arranged between the first coil () and the second coil ().

Method for producing a stator winding of an electric machine, in particular for producing an alternator

A rectifier bridge circuit is described for rectifying the phase voltage generated by a generator, including a positive half-bridge having multiple rectifier elements and a negative half-bridge having multiple rectifier elements. The rectifier elements each have a controllable switch having a diode connected in parallel. A control circuit is provided for switching the switches on and off. The switch-on time tand/or the switch-off time tof the switch is/are computed based on a characteristic map or a mathematical function.

Activation of a synchronous rectifier

A synchronous electric machine having a fixed stator, a multi-phase stator winding and having a rotor which has poles, excited in a predefined sequence, over its circumference, the number of poles being changeable as a function of the intensity and the direction of a field current in at least one field coil of the rotor. For improving the efficiency of the machine and for reducing the number of field coils and the entire coil cross section it is provided that the rotor has a laminated core, laminated in the axial direction, which has grooves on the circumference for accommodating the at least one field coil and that the at least one field coil is situated on the circumference of the rotor with a step size which corresponds to the pole pitch of the lower number of poles.

Electric machine having a hybrid-excited rotor

The invention relates to an electric machine, in particular to a generator for supplying the electrical system of a motor vehicle, comprising a laminated rotor () with an energiser winding (), which provides the energisation for the machine preferably in conjunction with permanent magnets () arranged on the rotor periphery. According to the invention, the rotor laminate bundle () is made up of at least two part bundles () in the axial direction with grooves () running into each other and with poles offset relative to each other (to). A machine with reduced detent torque is thus obtained with grooves () aligned parallel to the axis, in which the energiser windings () can be placed with a high filling factor and without production difficulties and without the risk of damaging the winding insulation.

Rotor for an electric machine with reduced detent torque

The invention relates to a synchronous machine with hybrid energization, in particular a generator for supplying the electrical system of a motor vehicle, comprising a laminated stator () with a multiphase stator winding () and a laminated rotor () with an energizer winding (), which together with permanent magnets () around the rotor periphery, provides the energization for the machine. According to the invention, favorable electrical and magnetic properties and an improvement in manufacturing conditions of the machine can be achieved, wherein the grooves () for the energizer windings () are disproportionately enlarged in relation to the groove base () and are preferably bell-shaped.

The invention relates to an electrical machine and to a method for the operation thereof, particularly as a drive motor for an electrical tool or as starter generator for a motor vehicle. The electrical machine includes a rotor excited by a permanent magnet and a stator carrying a multi-phase winding, and operates in a voltage-controlled, lower rotational speed range via a transformer on a DC voltage source. The electrical machine can also be operated in a higher rotational speed range by field weakening, and the structure of the machine can be changed by reducing the flux linkage between the rotor and the stator in order to weaken the field. Preferably, the change to the structure of the machine is carried out by turning off winding parts or by switching them between series and parallel connections.

Electrical machine

An alternator for motor vehicles, having a rotor, whose poles are developed as claw-poles. In order to improve the design options of the stator of the machine, its multiphase winding is developed as a fractional-slot winding, whereby, in particular with respect to the selection of the number of slots, many additional options are created, by which both the production is made clearly simpler and less costly and, at the same time, the electrical properties are able to be improved.

Alternator for motor vehicles

A hand-guided or stationary power tool has a drive unit having a motor that includes a rotor having a permanent magnet and a stator and has a motor control designed to trigger the motor in a first rotational speed range according to a voltage-controlled mode and to trigger the motor in a second rotational speed range following the first rotational speed range in the direction of a higher rotational speed according to a field-weakening operation.

Growing community of inventors

Stuttgart, Germany

Kurt Reutlinger