Robert Boschgmbh

Getrag B.v. & Co. Kg

Torsten Heidrich

Martin-Peter Bolz

Rainer Bitzer

Udo Diehl

Christian Grosse

Daniel Raichle

Holger Bellmann

Volker Pitzal

Udo Schulz

Werner Hess

Manfred Hellmann

Rainer Mayer

Juergen Bauer

Gunther Goetting

Guenther Riehl

Jochen Fassnacht

Michael Lehner

Marko Poljansek

Michele Hirsch

Holger Huelser

Uwe Maienberg

Rolf Maier-Landgrebe

Thomas Weigold

Uli Christian Blessing

Dragan Mikulec

Johannes Pfetzer

Roland Schleser

Markus Kretschmer

Werner Kind

Christian Tischer

Thomas Hoffmeister

Klaus-Juergen Wald

Martin Wirth

Ekard Grossmann

Peter Khatchikian

Boyke Richter

Tobias Werner

Dimitrios Stavrianos

Florian Einsele

Stephan Hanel

Christian Djonga

Matthias Schmitz

Michael Heeb

Peter Deuble

Philip Fankhauser

Sascha Dreschmann

Marcus Abele

Gerta Rocklage

Marko Pojansek

Stefan Gaab

Gerta Rocklage-Marliani

A system for charging an electrical energy store by means of a converter. The converter monitors an electrical connection between the converter and the electrical energy store. If an interruption of the electrical connection between the converter and the electrical energy store is detected, for example, the opening of a circuit breaker between the electrical energy store and the converter, the further provision of electrical power for charging the electrical energy store through is immediately prevented by the converter.

Converter, electrical drive system, and method for charging an electrical energy store

The invention relates to a method and to a device for changing from the idle operating state of an electric motor () having three phase terminals (---) to a short-circuit operating state. Thereby significant voltage rises are avoided. For this purpose, after receiving () a request for changing of the operating state of the electric motor () to the short-circuit operating state, three switching elements (---) are closed. Thereby the switching elements (---) are at least partially closed successively and the times of closing the individual switching elements are predetermined as a function of control parameters of the electric motor.

Method for switching an operating state of an electric machine and device for switching an operating state of an electric machine

The invention relates to a method and a device for operating a drive train () of a hybrid vehicle comprising an electrical system (), the drive train () having at least one vehicle drive wheel () in addition to one first electrical machine () and the first electrical machine () being connected to the electrical system (). According to the invention, in order to stabilize the voltage of the electrical system (), the first electrical machine () is operated without being coupled to the drive wheels () of the hybrid vehicle.

Method and device for operating a drive train of a hybrid vehicle

The invention relates to a method for operating an electrical machine () controlled by an inverter (), wherein the inverter () comprises half-bridge branches (-U,-V,-W) having power components in the form of controllable power switching elements () and power diodes () respectively connected in parallel therewith, wherein each of the half-bridge branches (-U;-V;-W) is arranged on a separate semiconductor module (-U;-V;-W), which are arranged jointly on a baseplate (), wherein the phase currents (1_U, 1_V, 1_W) flowing through the half-bridge branches (-U,-V,-W), the voltages present at the power components and temperatures (t_Sens_U, t_Sens_V, t_Sens_W) on the semiconductor modules (-U,-V,-W) are determined, from the current (1_U; 1_V; 1_W) respectively flowing at a power component and from the voltage respectively present a power loss (P) is calculated for each of the power components, from the power losses (P) a relevant temperature swing (&#x394;t; &#x394;t_Sens) is determined for each of the power components and for temperature sensors (-U,-V,-W) serving to determine the temperatures on the semiconductor modules, a temperature (TempCooler) of the baseplate () is determined from the determined temperatures (t_Sens_U, t_Sens_V, t_Sens_W) on the semiconductor modules (--V,-W) and the determined temperature swings (&#x394;t_Sens) at the temperature sensors (-U,-V,-W), and a torque or a power of the electrical machine () is determined in a manner dependent on the determined temperature swings (&#x394;t) and the determined temperature (TempCooler) of the baseplate ().

Control device and method for operating an electrical machine driven by an inverter

A circuit is described for operating an auxiliary unit for starting internal combustion engines via a starter battery. The circuit is configured to receive a state-of-function signal, a state-of-charge signal and/or a state-of-health signal from a battery-management system. The respective signals indicate whether the starter battery is capable of operating the auxiliary unit, what state of charge the starter battery has and whether the starter battery is damaged. The circuit is configured to draw electrical energy from a high-voltage battery, connected to the circuit, when the state-of-function signal indicates that operation of the auxiliary unit by the starter battery is not possible, when the state-of-charge signal indicates that the state of charge of the starter battery is too low to operate the auxiliary unit and/or when the state-of-health signal indicates that the starter battery is damaged.

Circuit for operating an auxiliary unit for starting internal combustion engines

A method for checking the plausibility of a torque of an electric machine, calculated on the basis of a machine model, in which a first value of an electromagnetic power of the electric machine is determined from the calculated torque and a rotational speed of the electric machine. Stator current components and stator phase voltage components are calculated from the stator currents and the stator phase voltages with respect to a reference system, which is fixed in relation to the stator. A second value of the electromagnetic power of the electric machine is determined from the stator current components and the stator phase voltage components. If a deviation of the first value of the electromagnetic power of the electric machine from the second value exceeds a predefined power threshold value, the torque of the electric machine, calculated on the basis of the machine model, is classified as implausible.

Method for checking the plausibility of the torque of an electric machine and machine controller for controlling an electric machine and for carrying out the method

A process to start a brushless direct current motor with a multiphase stator winding is disclosed, in which, during rotor standstill, a plurality of current impulses is intruded on the stator winding, the current rise time until a current threshold is reached is measured in the stator winding with every current impulse and the rotor position is derived from the measured current rise times. A more precise determination of rotor position is achieved with lower control-related effort for a regulated sensorless start-up in that a plurality of test current impulses is successively intruded on the stator winding in such a way that the test current impulses generate stator flow vectors offset by the same angular increments over 360&#xb0; electrically in the stator. The current rise time for each stator flow vector is measured in the total current of the stator winding and the phase position of the stator flow vector with the smallest current rise time is determined as the rotor position.

Method for starting a brushless d.c. motor

The specification describes a method and a detection module for determining the rotor position of an electromotor having a plurality of motor phase windings, in which, for determining the rotor position, the polarity of at least one motor phase voltages, which is induced in at least one first motor phase winding, is determined as at least one first polarity value, through comparison to a reference value. The reference value is, for example, a real or simulated star-point voltage. In one embodiment of the invention, the determination of the at least one first polarity value is synchronized to switch-on time point for supplying current to the at least one first or second motor phase winding, and in one specific embodiment, at least one first polarity value is determined after a preestablished delay, which follows the switch-on time point.

Method and device for determining the rotor position of an electric motor with several motor strings

The invention is directed to a method and an arrangement for controlling a motor vehicle having an integrated electric machine which generates electric as well as mechanical power. In the context of a hierarchal control structure having several logic components, the electric machine is allocated as a component &ldquo;electric drive&rdquo; to the component &ldquo;drive&rdquo; with respect to its function for generating mechanical power and as a component &ldquo;generator&rdquo; to the component &ldquo;vehicle electric drive&rdquo; with respect to its function for generating electric power.

Method and arrangement for controlling a vehicle

An electronically commutatable motor is described, the stator field windings of which can be connected to a commutation frequency having a DC supply voltage to generate a rotating field for the permanent magnet rotor and can be disconnected from it, the field windings being switchable via semiconductor output stages which can be activated via control signals with the commutation frequency of a control unit and whose operating conditions change as a function of a specified or specifiable setpoint. The disadvantages of motors with pulse-width-modulated control of the field windings can be avoided with simplified motor control in that the DC supply voltage is supplied to a DC transformer whose output voltage for the semiconductor output stages with the field windings changes as a function of the setpoint and that the control unit fully activates the semiconductor output stages continuously with unclocked control signals with the commutation frequency independently of the setpoint.

Electronically commutatable motor

A computer system for controlling the operation of a drive of a motor vehicle includes a plurality of different predetermined components each including at least one functional unit. Such components include a first component representing the motor vehicle as a whole and second component representing the drive. A plurality of interfaces is interposed between these components, being operative for transmitting data between such components. At least one storage stores information concerning such components and interfaces. The functional units mentioned above and the vehicle as a whole are controlled by controlling the above-mentioned components inclusive of the first component. In performing the control, request signals and inquiry signals are generated and transmitted through the interfaces between the components. The operation of the drive is controlled in dependence on the data exchanged between the components through the interfaces.

Overall motor vehicle control

A control system of a vehicle is suggested, which has several components (,to,), which are arranged in different logical levels with at least one coordination component (,), which monitors the making available of power and the power requirement of at least one type of resource which is needed by at least two consumers, and with at least one component (,) which makes the resource available, with at least two components (,) which consume the resource; coordination components and consuming components are arranged in one logical level, characterized in that the component, which makes available the resource, is arranged in a subordinated level of a consuming component (,) and the coordination component (,) inquires of the component, which makes available the resource, as to its power capacity with respect to the resource.

Vehicle control system

Growing community of inventors

Vaihingenenz, Germany

Torsten Heidrich