Ebm-papst Mulfingen Gmbh & Co Kg

Ralph Wystup

Markus Humm

Sebastian Schroth

Helmut Lipp

Marco Weckert

Fabian Schneider

Philip Kemmet

Daniel König

Erik Reichert

Andreas Fessel

Alexander Rau

Christian Antonius Knipp

Thomas Kilian

Martin Baun

Michael Eccarius

Marvin Götzinger

Georg Wiedmann

Walter Eberle

Jan Gehringer

Frederik Nöth

Pattrick Peppel

Robert Druschel

Michael Hopf

Rainer Nase

Hendrik Mohr

Marvin GÖTZINGER

Daniel Rosenberger

A system for monitoring the temperature of a motor (M) with an electromechanically drivable motor shaft. The system comprising a sensor that is based on a thermal model (MOD), which describes the thermal behavior of the motor (M), a measuring means for determining the electrical input power (P) of the motor (M), and a measuring means for recording the shaft speed n of the motor shaft. An evaluation device is also provided, which is designed to determine the respectively current motor temperature of the motor (M) from the input power (P), a reference temperature T, the determined shaft speed n, and the thermal model (MOD).

System and method for estimating engine temperature of an engine

A method for determining the operating point of an electric motor-driven fan in a system that includes determining the operating point of a fan when a clear correlation between the speed, the performance, and the volumetric flow rate of the fan is not possible.

Method for determining the operating point

A ventilator having a rotor is mounted in a rotatable manner around an axis of rotation. The rotor includes a plurality of blade-like rotor blades arranged around the axis of rotation. The ventilator includes a sensor device for detecting an object approaching one of the plurality of rotor blades, and a control device that receives signals from the sensor device. The control device extrapolates a trajectory of the object from a position x and a speed v of the object, and adjusts an angular position or rotational speed n of the rotor to allow the object to continue moving along its trajectory without colliding with one of the plurality of rotor blades.

Ventilator with a sensor device to avoid a collision between an object with the rotor

A method for operating a fan system as well as such a fan system. The fan system has a control device having an artificial neural network. The control device controls an electric motor of a backward curved centrifugal fan. The centrifugal fan creates a gas flow that is characterized by an actual flow value, particularly the actual value of a volume flow rate. The actual flow value is not detected by a sensor means, but determined by means of the artificial neural network depending from input variables and based thereon, the electric motor is open loop or closed loop controlled by means of the control device. The motor current and the motor voltage as well as their time-dependent behavior that can be the time derivative (e.g. gradient of first order) or that can be at least one preceding value at a preceding point in time, are provided to an input layer of the artificial neural network. It is particularly advantageous, if the artificial neural network determines an actual value of an output pressure that is fed back internally or externally forming an input variable for the input layer.

Method for operating a fan system and fan system having a backward curved centrifugal fan

A fan heater () has a motor (M) with motor windings (W) and a rotor that is connected to a fan (V) for delivering ambient air at least partially along the motor windings (W). At least one motor winding is configured as a heater winding (HW) for generating a specific heat output or amount of heat as intended.

Fan heater motor

A device () and method for sensor diagnostic monitoring and detection of an imbalance of a rotating machine () has steps of (a) detecting acceleration signals (Sb) of the housing () or of a non-rotating component of the rotating machine () by a sensor (); (b) detecting signals (Sd) for the determination of the rotation speed of the rotating machine () by a second sensor; and (c) supplying and evaluating of sensor signals (Sb, Sd) by an evaluation unit (). An acceleration component that is acquired occurs with the rotation speed of the rotating machine. This component is compared with a predetermined limit value.

Method and device for imbalance detection

The disclosure relates to a method for determining the positions of a number of fans (Vn,m) for generating an air flow in a preferably enclosed space, which have a speed sensor for determining their position, wherein the fans (Vn,m) are arranged in rows (R1, R2, . . . , Rn) and columns (S1, S2, . . . , Sm), wherein at least the position (i, j) of one fan (Vi,j) is known.

Positioning system and method for determining the position of fans

A device for wirelessly transmitting and receiving data of an RFID tag introduced in an electromagnetically shielded housing, wherein a transmission region is provided in the housing wall of the housing and wherein a transceiver is connected to the RFID tag. The transceiver is configured to transmit and/or receive data from the RFID tag through the transmission region, wherein a double coil formed by two coil assemblies is provided directly above or below the transmission region for coupling to an external receiving unit of a reading device and for coupling to the transceiver.

Device and method for transmitting and receiving data of a passive RFID tag in an electromagnetically shielded housing

The disclosure relates to a method for reducing the torque ripple and noise evolution in an EC motor with single-phase feed by buffer-storing electrical energy in the EC motor, which is embodied with a power factor correction circuit (PFC) having a capacitor (Cz) at the power supply system input for a specific power supply system AC voltage UN, wherein the capacitance of the capacitor is dimensioned such that when the power supply system AC voltage UN is applied, a pulsating DC voltage is generated in a link circuit (Z), wherein the pulsating electrical energy generated as a result is stored by means of a primary regulation of the id current component as magnetic energy in the EC motor at least for a predefined time period.

Capacitance reductions

The present disclosure relates to a device and to a method for detecting filter soiling of a filter system having at least an air filter installed in an air duct and an electrically controlled fan for producing an air flow in the air duct, wherein the device comprises at least a motor controller for controlling the fan motor by means of PWM control and an evaluating apparatus for determining the actual rotational speed (n) of the fan in accordance with the actual degree of modulation (T) of the motor current for achieving the present rotational speed (n), wherein, in the evaluating apparatus, setpoint value pairs (n, T) for the setpoint rotational speed (n) at a certain degree of modulation (T) are also stored, as well as a comparator in order to compare the actual value pairs (n, T) with the setpoint value pairs (n, T) and to obtain the degree of filter soiling of the air filter therefrom.

Device and method for detecting filter clogging

The invention relates to a method for the closed-loop and open-loop control of two or more EC motors operated using a common converter, wherein for the purpose of setting the operating point of the EC motors, common open-loop or closed-loop control using at least one controller is provided, wherein a combination of at least two control options is provided and in this case a controlled variable regulates the voltage setting at the output of the converter such that the two or more EC motors follow an intended sequence of operating points in a stable manner.

Multi-motor operation

A permanent magnet synchronous machine () having a rotor (R) and a stator (S). Connection terminals () apply a feed alternating voltage with a feed frequency (f). The permanent magnet synchronous machine () has a motor controller (). The controller () has an assembly () to detect the terminal voltage on the connection terminals () and the current frequency (f). Also, the controller has an analysis device (). The analysis device () ascertains whether the current frequency (f) contains a frequency component (f) with a frequency that deviates from the feed frequency (f).

Synchronous machine and method for regulating the rotational speed of the synchronous machine without sensors

The present invention relates to a device for ascertaining the temperature TW of a winding of an induction machine designed with a stator and a rotor, comprising at least a first Kalman filter (K) to calculate the temperature and a rotary field control for the vector control of the induction machine with at least one id-current controller, which is designed to impose a high-frequency voltage signal (HF) on the winding voltage in order to obtain from this a winding current with a superimposed high-frequency current component for the winding, which is taken to the Kalman filter (K), the Kalman filter (K) having a high-frequency model of the motor in order to determine from this the high-frequency resistance of the winding and in turn the winding temperature TW by means of a calculation function.

Device and method for determination of winding temperature

The present disclosure relates to a method and an apparatus for monitoring a rolling bearing of an electric motor, wherein the rolling bearing forms a capacitive parasitic antenna, having the following steps of: a. capturing the electromagnetic spectrum emitted by the parasitic antenna in a manner triggered by spark formation in the rolling bearing over a respectively defined period t during operation of the electric motor; b. evaluating the number N of electromagnetic pulses (a, b, c, d, e) received in the spectrum and the amplitude A of said pulses; c. capturing the change in the number N of electromagnetic pulses (a, b, c, d, e) and/or the amplitude A of said pulses, and d. determining whether the increase in the number N and/or in the amplitudes A of the electromagnetic pulses (a, b, c, d, e) increases in a non-linear manner with time.

Method for monitoring rolling bearings

A dehumidifying device for a housing, in particular an electronics housing of an electromotor with a dehumidifying chamber includes a wall inside of which a hygroscopic material is received which is designed to bind air moisture from the dehumidifying chamber. The wall of the dehumidifying chamber includes at least one inner membrane permeable to vapor which can be brought into an active connection with an inner receiving space of the housing and an outer membrane which can be brought into an active connection with the outside environment of the housing. The at least one inner membrane and the outer membrane are permeable to vapor at least in a direction in which a transport of air moisture out of the inner receiving space of the housing through the dehumidifying chamber into an outside environment can be ensured.

Growing community of inventors

Künzelsau, Germany

Ralph Wystup