Ebm-papst Mulfingen Gmbh & Co Kg

Martin Bürkert

Thomas Sauer

Dieter Best

Gerhard Sturm

Gunter Streng

Günter Haas

Helmut Lipp

Marco Weckert

Daniel König

Markus Humm

Sebastian Schroth

Fabian Schneider

Alex Schneider

Rainer Müller

Jochen Häfner

Andreas Fessel

Steffen Kammleiter

Hartmut Messerschmidt

Thomas Kilian

Christian Antonius Knipp

Steffen Hanselmann

Christian Kranz

Georg Wiedmann

Fabian Wagner

Thomas Rupp

Andreas Bader

A modular control unit () is adaptable, in terms of interface functions, for an electric motor selected from a predetermined number i of electric motors, in particular electric motors of the same power class. The control unit () has at least two printed circuit boards (L, L), selected from a set of N different printed circuit boards (L, L, . . . , LN). Interface functions, electrical components, electronic components or control units for the operation of the electric motor are located on the printed circuit boards.

Modular interface concept for an electric drive

An analog circuit arrangement () to variably set a voltage U, within defined voltage limits, has a non-inverting adder () with a positive input (). A voltage divider (), with at least a first stage () and a second stage (), is connected to the positive input () of the adder (). At least one stage has a parallel circuit of n resistors (R, R, . . . , Rn) that are each connected in series in a conduction path (L, L, . . . , Ln) to an overcurrent protection device (F, F, . . . , Fn). At least one device () actively changes one or more of the overcurrent protection devices (F, F, . . . , Fn) into a state that interrupts the respective affected conduction path (L, L, . . . , Ln).

Analogue voltage programming

A system () has a control device () with central electronics () designed for connection and operation of differently coded electric motors (En), with different motor characteristics (Mn) and/or power classes (Ln), to a device connection () of the control device (). The at least one electric motor (En) is selectable from a number (n) of electric motor (En), that can be connected as intended, has a coding element (Kn). The central electronics () have a coding capture device () to recognize, via coding element (n), the motor characteristics (Mn) and/or the power class (Ln) of the respective currently connected electric motor (En).

System comprising component coding

A rotating field machine, in particular an electric motor with a stator and a rotor, is configured with a motor control for controlling the rotation and the rotational speed n of the rotor of the rotating field machine, wherein the motor control integrally includes an oscillation sensor system in order to acquire actual measurement values of oscillations of the rotating field machine depending on the rotational speed n.

Device for continuous oscillation monitoring during rotating field machine operation

A dynamically addressable master-slave system and a method for dynamically addressing slave units includes a master unit and a plurality of slave units, such that the slave units are interconnected with the master unit via a bus system. The respective network addresses of the slave units are assigned to the respective serial numbers of these slave units in a table in the master unit according to the position thereof in the system according to a determined order. Upon replacement of slave units, a list of serial numbers of the units to be replaced is transferred to the master unit in the sequence of the acquisition of the serial numbers, which master unit replaces these serial numbers in the table with the serial numbers of the replaced slave units transmitted to the master unit.

Wireless allocation of network addresses

The disclosure relates to the operation and a circuit arrangement for a network connection variable with regard to the input voltage (1-phase/3-phase), which is connected using a centre tap (M) between the capacitors (C) via a connecting line to a neutral conductor (N) of an input AC voltage source.

Device for efficient DC link processing independent of grid type

The disclosure relates to an assembly composed of two or more electric drives, each of which is provided with a housing that is preferably closed all around; a transceiver or radio transmitter inside the housing of each electric drive is configured for wireless data communication with a master controller; for this purpose, a properly mounted transmission opening is provided in each housing in order for data to be transmitted and received through the transmission opening.

Wireless transmission

A protective circuit protects against overheating of the stator windings of an EC motor. The stator windings are connected to a semiconductor output stage which is designed for time-offset control of the stator windings using a driver circuit of a commutation controller. The protective circuit has two redundant sensor circuits, wherein two resistance-dependent sensor elements connected in series are provided in the first sensor circuit and one resistance-dependent sensor element is provided in the second sensor circuit. The first and the second sensor circuits are connected, respectively, to two evaluating circuits separated from each other and cause an interruption of the driver circuit using switch-off means when a system-specific resistance value of the first sensor element or the one sensor element associated with the second sensor circuit is reached.

Overtemperature protection

An electronic control circuit for an electronically commutated motor (ECM) is disclosed. A plurality of power transistors controls the ECM, and a reference transistor is formed together with the power transistors on a common support. A control unit is configured to, in a test mode: apply a test current to the reference transistor and one of the power transistors respectively; measure a saturation voltage of the reference transistor and one of the power transistors; evaluate a saturation voltage difference between the measured saturation voltages of the reference transistor and the respective power transistor; evaluate a rate of change of saturation voltage differences between a first iteration of the test mode and a second iteration of the test mode; and determine an expected remaining service life of the power transistors based on the temperature of the support during the test mode and the rate of change of the saturation voltage differences.

Electronic control circuit comprising power transistors and method for monitoring the service life of the power transistors

A control circuit () for an electronically commutated, direct current motor (M) without a collector with a semiconductor end stage () which is controlled by an electronic commutation control () via a driver stage () for the time-offset control of the stator coils (U,V,W) of the motor (M) for the purpose of producing a magnetic rotating field for a rotor depending on the rotor rotation position. Two redundant stall protection units () monitor the motor (M) during operation for rotation of the rotor, whereby in the case of a determined stall situation, the first stall protection unit () deactivates the driver stage () and the second stall protection unit () shuts off the supply voltage (U) for the driver stage ().

Growing community of inventors

Dörzbach-Hohebach, Germany

Martin Bürkert