Kretschmann, DE
Frank Kretschmann, Herten DE
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20140302957 | DRIVE SYSTEM FOR A WIND TURBINE - A drive system having an integrated transmission and motor/generator unit for a wind turbine includes a transmission output shaft designed as a hollow shaft, which receives a sun shaft of an output-side planetary gear stage and is connected thereto. The transmission output shaft comprises a transmission-side end section of an insert shaft which is concentrically arranged within a rotor hollow shaft. The transmission output shaft additionally has a bearing for receiving radial and axial forces. The motor/generator unit has two dedicated bearings. One bearing thereof is a transmission-side bearing. In addition, a rear-side generator bearing is provided. | 10-09-2014 |
Hanno Kretschmann, Hamburg DE
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20110079697 | SUSPENSION DEVICE AND PROCESS FOR MOUNTING SAME - A suspension device ( | 04-07-2011 |
20110116260 | ACTUATING DEVICE FOR OPERATING LAMPS - An actuating device for operating lamps ( | 05-19-2011 |
20120043915 | OPERATING LIGHT WITH IMPROVED OPERATING FUNCTIONALITY - An operating light ( | 02-23-2012 |
20120106145 | OPERATING LIGHT AND A PROCESS FOR LIGHTING AN OPERATING TABLE BY MEANS OF AN OPERATING LIGHT - An operating light ( | 05-03-2012 |
20120182731 | OPERATING LIGHT WITH LED ORIENTATION BY MEANS OF POSITIVE LOCKING - An operating light is provided with a basic body ( | 07-19-2012 |
20130224076 | MEDICAL DEVICE FOR TREATING A PATIENT - A medical device ( | 08-29-2013 |
20130226073 | DEVICE FOR DISINFECTING WOUND TREATMENT | 08-29-2013 |
Helmut Kretschmann, Altena DE
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20080203717 | Rollover protection system for motor vehicles with an actively deployable rollover body - The invention relates to a rollover protection system for motor vehicles with at least one rollover body that in a normal state can be held by means of a holding mechanism in a lower, stored resting position and can be brought in a sensor-controlled manner into a deployed, locked protective position, with release of the holding mechanism. In such rollover protection systems, in order to minimize in a simple manner the mechanical stress on the bearing points of the rollover body or of the locking mechanism in the protective position arising in a rollover, the invention provides that at least one deformation element is integrated into rollover body, formed from at least two elastic and/or plastic deformation-defined, energy-reducing partial elements of the rollover body that can be slid into one another. The rollover body has two bar arms, at least one of which has at least two arm elements that can be slid into one another as partial elements of the rollover body for the deformation element. | 08-28-2008 |
Joerg Kretschmann, Kempen DE
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20110215775 | DIRECT POWER CONTROL WITH COMPONENT SEPARATION - The invention relates to a method to control power output of a doubly-fed induction machine to a grid including the steps of measuring grid voltage and grid current in a three phase coordinate system, transforming grid voltage and grid current into a stator frame coordinate system, decomposing the grid voltage and grid current in the stator frame coordinate system in a positive sequence system and in a negative sequence system, calculating active and reactive power in the positive and negative sequence system, and controlling active and reactive power in the positive and negative sequence system. The object to provide a method to control power output of a doubly-fed induction machine which provides good dynamics and is able to allow fault-ride-through operations when unbalanced grid voltages occurs is solved in that active and reactive power in the positive and negative sequence system are used as independent state variables in a state controller, whereas the state controller generates manipulated values in the positive and negative sequence system separately which are subjected as manipulated state vectors to a state feedback in a stator frame coordinate system without further control loops before the manipulated vector resulting from state feedback is used to set the rotor voltage. | 09-08-2011 |
20110260454 | DEVICE FOR CONTROLLING A DOUBLE-FED ASYNCHRONOUS MACHINE - The invention relates to a device and method for controlling a double-fed asynchronous machine ( | 10-27-2011 |
Jörg Kretschmann, 47906 Kempen DE
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20100117605 | METHOD OF AND APPARATUS FOR OPERATING A DOUBLE-FED ASYNCHRONOUS MACHINE IN THE EVENT OF TRANSIENT MAINS VOLTAGE CHANGES - The invention relates to a method and a device for operating an asynchronous motor ( | 05-13-2010 |
Jörg Kretschmann, 47906 Kempen DE
Patent application number | Description | Published |
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20100117605 | METHOD OF AND APPARATUS FOR OPERATING A DOUBLE-FED ASYNCHRONOUS MACHINE IN THE EVENT OF TRANSIENT MAINS VOLTAGE CHANGES - The invention relates to a method and a device for operating an asynchronous motor ( | 05-13-2010 |
Matthias Kretschmann, Regensburg DE
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20090037129 | Method for the Determination of Long-Term Offset Drifts of Acceleration Sensors in Motor Vehicles - A method for determining long-term offset drifts of acceleration sensors in a motor vehicle has the steps:—the longitudinal vehicle speed Vx is determined in the vehicle's center of gravity;—the share of the driving dynamics in the longitudinal reference acceleration formula (I) and in the transversal reference acceleration formula (II) is calculated from the longitudinal vehicle speed Vx and the yaw rate ω | 02-05-2009 |
20100060296 | Method and device for checking a sensor signal - Depending on a sensor signal, a noise signal which suppresses a useful signal spectrum of the sensor signal is determined by filtering using a filter. A noise variable, which is a measure of a noise of the sensor signal, is determined depending on the noise signal. An error of the sensor signal is identified depending on the noise variable determined. | 03-11-2010 |
20100235036 | METHOD AND APPARATUS FOR OPERATING A VEHICLE - In a method for operating a vehicle ( | 09-16-2010 |
20100299083 | Method and Device for Monitoring the Noise from a Sensor - A method and device for monitoring the noise from a sensor and a use of the method in automobiles for determining a frictional value between tyres of a motor vehicle and a road surface, in particular an economical and reliable method for monitoring a sensor noise and a corresponding device for obtaining, amongst other things, system-relevant information may be achieved, wherein an influence on spectral components of the sensor noise signal is determined and compared with set values. | 11-25-2010 |
20110004359 | Method and apparatus for determining a signal offset of a pitch rate sensor - In order to determine a signal offset (OFF_SIG) of a pitch rate sensor of a vehicle ( | 01-06-2011 |
20110015906 | METHOD AND DEVICE FOR DETERMINING A COEFFICIENT OF FRICTION - In a method for determining a coefficient of friction between a motor vehicle tire of a motor vehicle and the surface of a roadway, a first coefficient of friction parameter (μ | 01-20-2011 |
20110023603 | Method And Apparatus For Determining The Current Longitudinal Vehicle Speed - A wheel rotation speed (RD) is determined from at least two wheels of a vehicle, respectively. A variable variability measure (VAR) is determined for each wheel rotation speed (RD), respectively. The current reliability of the respective wheel rotation speed (RD) is determined as a function of the variability measure (VAR). The current longitudinal vehicle speed is determined either as a function of the wheel rotation speeds (RD) which are currently detected as being reliable, or the current longitudinal vehicle speed is determined as an extrapolation as a function of wheel rotation speeds (RD) which were previously detected as being reliable if all wheel rotation speeds (RD) are currently detected as being unreliable. | 02-03-2011 |
20110226036 | METHOD AND DEVICE FOR DETERMINING A SIGNAL OFFSET OF A ROLL RATE SENSOR - In order to determine a signal offset (OFS_SIG) of a roll rate sensor in a vehicle ( | 09-22-2011 |
20130327136 | METHOD FOR OPERATING A TIRE PRESSURE MONITORING SYSTEM FOR A MOTOR VEHICLE, TIRE PRESSURE MONITORING SYSTEM AND MOTOR VEHICLE - A method of operating a tire pressure monitoring system for a motor vehicle includes detection of a stationary state of the motor vehicle by way of a centrifugal force measured on the wheel side or a vehicle speed measured on the vehicle side, during a time period during which the vehicle speed is zero; detection and vehicle-side storage of an acceleration force in each wheel during the time period, and renewed detection of an acceleration force in each wheel at the end of the time period. The detected acceleration force in each wheel is transmitted to a vehicle-side control device and compared with earlier-stored acceleration forces associated with the respective wheel position. The tire pressure system is initialized following the stationary state of the motor vehicle in the event of a deviation in any of the wheels. There is also provided a tire pressure monitoring system and a motor vehicle. | 12-12-2013 |
20150073677 | DEVICE AND METHOD FOR DETERMINING AN ABSOLUTE ANGULAR POSITION OF A WHEEL OF A VEHICLE - A device and a method for determining an absolute angular position of a wheel of a vehicle. A wheel unit is mounted on the wheel side and configured to determine data which permit a reference limb of the wheel, and to wirelessly transmit the acquired data. A receiver unit is mounted on the vehicle side and receives the data of the wheel unit. A reference limb-determining device determines the reference limb of the wheel on the basis of the received data. A measuring device generates, in each case, one signal when the wheel rotates by a previously determined angle, and a counting device counts the signals generated by the measuring device. An angle-determining device determines an absolute angular position of the wheel on the basis of the signals counted by the counting device, and on the basis of the specific reference limb. | 03-12-2015 |
Michael Kretschmann, Hagen DE
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20130154716 | Circuit Topology for a Phase Connection of an Inverter - A circuit for a phase connection of an inverter includes upper and lower bridge halves and respectively associated upper and lower bridge segments. Each bridge half has an outer switch and an inner switch connected in series. Each bridge segment has a diode and the inner switch of the associated bridge half connected in series. An output of the circuit is respectively connected to upper and lower potentials through the outer switches and is further connected to a center potential applied between the upper and lower potentials through each of the upper and lower bridge segments. Each bridge half further has a parallel power switch. The parallel switch of each bridge half is connected in parallel to the series-connected outer and inner switches of the bridge half. The output of the circuit is further respectively connected to the upper and lower potentials through the parallel switches. | 06-20-2013 |
Oliver Kretschmann, Dusseldorf DE
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20130059109 | Curable Polyorganosiloxane Composition For Use As An Encapsulant For A Solar Cell Module - The invention relates to curable polyorganosiloxane compositions for the use as an encapsulant for a solar cell module, in particular, for the encapsulation of photovoltaic modules, cured polyorganosiloxane composition made therefrom and photovoltaic modules comprising the same as encapsulant. | 03-07-2013 |
Rainer Kretschmann, Bad Oeynhausen DE
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20150092321 | ENERGY SUPPLY DEVICE FOR EXPLOSION-PROOF ELECTRONIC FUNCTIONAL UNITS - An exemplary energy supply device for explosion-proof electronic functional units supplies each functional unit with a high-frequency AC voltage via an inductor. The inductors are formed as substantially congruent conductor tracks of a multi-level printed circuit board, which can be connected to one another and arranged vertically on a distribution printed circuit board. The number of metallization planes of the multi-level printed circuit board being greater than the number of metallization planes of the distribution printed circuit board. | 04-02-2015 |