Robert Boschgmbh

Seg Automotive Germany Gmbh

Zoltan Ersek

Manuel Mueller

Sebastian Paulus

Miriam Riederer

Udo Schulz

Wolfgang Fischer

Paul Mehringer

Julian Roesner

Arunkumar Motaganahalli Srinivasamurthy

Shadakshara P Murthy

Janos Markus

Method for detecting a state of an electric system () in a motor vehicle, said electric system () comprising a generator unit that includes an electric machine () with a rotor winding () and a stator winding () as well as a rectifier () which is connected to the electric machine () and via which the electric system () is connected to the electric machine (); in said method, a decision about the current state of the electric system (), especially about the availability of a battery () of the electric system, is made in accordance with an excitation current (I) flowing through the rotor winding () of the electric machine ().

Method for detecting a state of a vehicle electric system

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 (), and a rectifier () connected thereto, via which the electric machine () is connected to an onboard electrical system () of a motor vehicle, wherein a voltage of the onboard electrical system () is controlled to a target value via an excitation current (I) through the rotor winding () of the electric machine (), and a curve of a phase voltage (U) of the stator winding () is monitored, wherein an error in the generator unit is inferred when a change of the phase voltage (U) is detected and a voltage of the onboard electrical system () changing within a threshold value range (S) is detected.

Method for detecting an error in a generator unit

A method for detecting an error in a generator unit which has an electric machine () with a rotor winding () and a stator winding () and a rectifier () connected thereto, via which rectifier the electric machine () is connected to an electrical system () of a motor vehicle, the excitation current (IE) flowing through the rotor winding () of the electric machine () being plotted and it being concluded that there is an error in the generator unit depending on whether a frequency component (A) of a frequency spectrum of the plot of the excitation current (IE) in a frequency range above a lower speed limit (SW) is larger than a threshold value (S).

A method for detecting a fault in a generator unit that has an electrical machine including a rotor winding and a stator winding and a rectifier connected thereto, via which the electrical machine is connected to an electrical system of a motor vehicle. Whether or not the fault exists is determined as a function of an excitation current traversing the rotor winding of the electrical machine and as a function of a setpoint value of the excitation current.

Method for detecting a fault in a generator unit

The various embodiment of the present disclosure provides a system to define and identify an absolute mechanical reference position for a rotating element, The system comprises a radial ring magnet comprising plurality of pole pairs mounted to the rotating element, a first magnetic sensor in proximity of the radial ring magnet to detect angular position of said rotating element, at least one second magnetic sensor in proximity of the radial ring magnet to detect the passage of each of the pole pair and a control module adapted to define said absolute mechanical position by computing a unique first set of feature values for each of said plurality of pole pairs based on responses of said first magnetic sensor and said second magnetic sensor. The first set of feature values is stored in a memory unit.

Device and method to define and identify absolute mechanical position for a rotating element

A method is provided for switching on and switching off an n-phase electric machine in a motor vehicle. The n-phase electric machine includes a rotor with a rotor winding, and a stator with an n-phase stator winding. An excitation current may be applied to the rotor, and an n-phase phase voltage may be applied to the stator. The excitation current is switched on or off, a parameter which influences a synchronous generated internal voltage is determined, and the phase voltage is switched on or off when the parameter which influences the synchronous generated internal voltage reaches a certain threshold value.

Methods for switching on and for switching off an N-phase electric machine in a motor vehicle

The invention relates to a method for providing an indication of movement from a sensor signal from a position transmitter (), wherein the indication of movement indicates a speed of movement, wherein the sensor signal from the position transmitter () generates an edge following a movement via a particular path range having the following steps:&#x2014;a pulse duration (dT) is ascertained (S) as the interval of time between the last two provided edges of the sensor signal;&#x2014;depending on whether a period which corresponds to the pulse duration (dT) has elapsed since the last provided edge of the sensor signal, an indication which is dependent on the pulse duration (dT) or an indication which is dependent on the period since the last edge of the sensor signal is provided (S, S) as an indication of movement.

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Korntal-Muenchingen, Germany

Zoltan Ersek