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Engelhardt, DE
Christian Engelhardt, Pressig DE
| Patent application number | Description | Published |
|---|---|---|
| 20110263184 | GRINDING MACHINE - A grinding machine includes a machine frame with a work piece support surface on which a work piece may be transporter through the machine. A grinding bar arrangement including two grinding shoes positioned in parallel is arranged transversely with respect to a work piece feeding direction across the width of the work piece support surface. The two grinding shoes carry a grinding medium on their surfaces facing the work piece support surface and are suspended via an eccentric drive. The two grinding shoes perform rotary movements in a plane parallel to the work piece support surface achieving a high quality grinding result. | 10-27-2011 |
Dietmar Engelhardt, Monchengladbach DE
| Patent application number | Description | Published |
|---|---|---|
| 20090026298 | Creel Loading and Relieving Device for a Winding Device of a Textile Machine Producing Cross-Wound Bobbins - A creel loading and relieving device for a winding device of a textile machine producing crosswound bobbins adjusts the contact pressure of a take-up bobbin mounted in a creel on a driving roll. The creel loading and relieving device comprises a creel pivotally mounted via a creel shaft and a force applying means which grips the creel and is adjustable via a positioning element. The creel loading and relieving device ( | 01-29-2009 |
Franz Engelhardt, Starnberg DE
| Patent application number | Description | Published |
|---|---|---|
| 20110018469 | ILLUMINATION FOR A TEST DEVICE - The present invention relates to a lighting means for a checking device and a method for the control of such a lighting means. The invention here starts out from a lighting means for a checking device and a method for the control thereof, with a sensor device containing at least one light source, wherein the at least one light source radiates light with high radiant power which represents a danger to the eyes of operators or service personnel, wherein a housing, which contains the at least one light source and prevents an emergence of light of the light source, is monitored as to whether the housing is open, wherein the at least one light source with high radiant power is switched off if there is detected upon the monitoring an opening of the housing, which permits an emergence of light of the light source. It is provided here that a lighting means is switched on at the same time or later which has a radiant power not representing any danger to the eyes of operators or service personnel. | 01-27-2011 |
| 20110127414 | METHOD FOR CALIBRATING A SENSOR SYSTEM - The invention relates to a method for the calibration of a sensor system. | 06-02-2011 |
Friedrich Engelhardt, Frankfurt DE
| Patent application number | Description | Published |
|---|---|---|
| 20090192055 | Stabilized aqueous polymer compositions - The aqueous polymer composition comprises a water soluble polymer having a molar weight of at least 10 | 07-30-2009 |
| 20100075871 | Stabilized aqueous polymer compositions and their use - Disclosed are stabilized aqueous polymer compositions containing A) a stabilizing amount of a least a sulfur dye or containing a stabilizing amount of a sulfur dye with a compound comprising a heterocyclic system containing nitrogen and sulphur as ring heteroatoms and B) at least one polymer comprising groups which are capable of complex formation with ions. The aqueous polymer compositions are stabilized against thermal or other degradation processes of the polymer by addition of component A) to allow their use even under harsh conditions. | 03-25-2010 |
Hans-Peter Engelhardt, Unterschleissheim DE
| Patent application number | Description | Published |
|---|---|---|
| 20120066232 | VEHICLE NAVIGATION SYSTEM - A vehicle navigation system having a database configured to store map data. The database includes links corresponding to road segments and attributes associated with the links. The map data includes at least some links associated with a curvature attribute. A mean absolute curvature ( | 03-15-2012 |
Harald Engelhardt, Ingelheim Am Rhein DE
| Patent application number | Description | Published |
|---|---|---|
| 20100311721 | COMPOUNDS - The present invention encompasses compounds of general formula (1) | 12-09-2010 |
Helmut Engelhardt, Herzogenaurach DE
| Patent application number | Description | Published |
|---|---|---|
| 20080196682 | Connection Element For The Secure Fixing Of A Lever-Type Cam Follower - Connecting element ( | 08-21-2008 |
| 20090250034 | Structural member of an internal combustion engine operated with alcoholic fuel - A structural member comprised of at least one component for an internal combustion piston engine operated with alcoholic fuel, at least one of the components being made of a martensitic steel with a C content of up to 0.7% and a Cr content of 12 to 18% wherein in an installed state of the structural member in the internal combustion engine, the at least one component is directly exposed to the lubricating oil serving to lubricate a crank mechanism of the internal combustion engine. | 10-08-2009 |
| 20100064999 | CAM FOLLOWER - A cam follower for actuating a gas exchange valve of an internal combustion engine, which has a lifting body cold formed from sheet metal and that forms, on a valve-sided lifting section which has two lateral walls and a first base section connecting the walls, a cross-sectional profile which is open towards the gas exchange valve in a U-shaped manner, and on a joint-sided lifting section that has lateral walls and a second base section connecting the walls, a modifiable cross-sectional profile which is initially open towards the gas exchange valve in a U-shaped manner, the U-shape adopting a trough shape that has a protruding annular cavity. The trough shape adjacent to an annular cavity on the side of the valve-sided lifting section is M-shaped and has two free recesses open towards the gas exchange valve and extend between one of the lateral walls and the second base section. | 03-18-2010 |
Joerg Engelhardt, Ditzingen DE
| Patent application number | Description | Published |
|---|---|---|
| 20090041081 | COMBINED PRESSURE/TEMPERATURE SENSOR HAVING CENTRIC TEMPERATURE MEASUREMENT - The present invention relates to a combined pressure and temperature sensor ( | 02-12-2009 |
| 20100002745 | SENSOR PLUG FOR COMBINED PRESSURE AND TEMPERATURE MEASUREMENT - A sensor plug for pressure and temperature measurement of a fluid medium includes a sensor body having a sensor body axis, as well as a pressure sensor disposed substantially concentrically on the sensor body axis. Also provided in the sensor body is a through orifice for connecting the pressure sensor to the fluid medium, and a temperature sensing element orifice having a temperature sensing element received therein. The temperature sensing element orifice has a temperature sensing element orifice axis that is inclined with respect to the sensor body axis in such a way that at its end pointing toward the fluid medium, it is inclined toward the sensor body axis. | 01-07-2010 |
| 20110120404 | Laser spark plug - A laser spark plug device for an internal combustion engine includes a prechamber for receiving an ignitable medium and at least one overflow channel providing a fluid connection between an internal space of the prechamber and an external space surrounding the prechamber. The at least one overflow channel is configured such that when a fluid flows through the overflow channel into the internal space of the prechamber, the result is a fluid flow having at least one eddy which rotates on an eddy axis forming an angle of more than approximately 45° with a longitudinal axis of the laser spark plug device. | 05-26-2011 |
| 20110123261 | THREADED CONNECTION PIECE - A threaded connection piece, e.g., a connection piece of a sensor, includes a cylindrical base body that is able to be at least partially introduced into an accommodating opening, which is provided, at least over a part of its longitudinal extension, with a threaded section and, at its end face, with a sealing surface. In order to improve the sealing properties of the threaded connection piece when it is screwed into the accommodating opening, the cylindrical base body is developed to be elastic between the threaded section and the sealing surface. | 05-26-2011 |
Joerg Engelhardt, Ditzingen (hirschlanden) DE
| Patent application number | Description | Published |
|---|---|---|
| 20100284437 | PLUG-IN SENSOR FOR MEASURING AT LEAST ONE PROPERTY OF A FLUID MEDIUM - A plug-in sensor for measuring at least one property of a fluid medium, in particular for use in the coolant circuit of an air conditioning system of a motor vehicle. The plug-in sensor has at least one sensor for detecting the at least one property. Furthermore, the plug-in sensor has at least one sensor body having an external thread for threading the plug-in sensor into a threaded bore hole of a housing. Furthermore, the plug-in sensor includes a sealing surface for sealing an inner space of the housing against an outer space. The external thread has at least two threaded sections: a first threaded section including at least one continuous thread, and a second threaded section including at least one interrupted thread, at least one interruption of the at least one interrupted thread forming at least one blow-out groove. | 11-11-2010 |
| 20120024250 | IGNITION LASER - An ignition laser, includes a laser-active solid-state body, a housing and a combustion chamber window, the housing having an inner sleeve and an outer sleeve. An insert is provided between the inner sleeve and the outer sleeve, the insert and the combustion chamber window being joined sealingly and integrally. | 02-02-2012 |
| 20120037108 | Laser Spark Plug - A laser spark plug, in particular for an internal combustion engine of a motor vehicle is described. A fixing arrangement is provided in an end region of the laser spark plug facing the combustion chamber. The fixing arrangement allows an optical component to be detachably fixed to the laser spark plug. | 02-16-2012 |
Joerg Engelhardt, Hamburg DE
| Patent application number | Description | Published |
|---|---|---|
| 20080309168 | Method and Arrangement for Harmonic-Wave Suppression for AC Voltage-Operated PTC Heaters - The invention relates to a method and to an arrangement for harmonic-wave suppression in AC voltage-operated PTC heaters, especially in frequency-stable and frequency-variable alternating-voltage networks in aerospace applications. The problem of harmonic-wave suppression for AC voltage-operated PTC heaters, in which the harmonic waves are suppressed by superimposing a correction current, which permits a simple and economical generation of the harmonic-wave suppression signal, is solved according to the invention by generating a correction current in a correction current circuit arranged parallel to the PTC heater using an ohmic resistor ( | 12-18-2008 |
| 20100052432 | Method and Arrangement for Harmonic Wave Suppression in AC Voltage-Operated PTC Air Heaters - The invention is directed to a method and an arrangement for harmonic wave suppression in AC voltage-operated PTC heaters in which a harmonic component which is generated in the current of the PTC heater and which contains predominantly the third harmonic of the heating current is compensated by the superposition of correction signals. It is the object of the invention to find a novel possibility for a simple and robust suppression of harmonic waves in AC voltage-operated PTC heaters in which the permissible limiting values for harmonic distortion are not exceeded as a result of changes in heating output. This object is met according to the invention in that a voltage modulation is generated in a voltage modulator ( | 03-04-2010 |
Johann Engelhardt, Bad Schonborn DE
| Patent application number | Description | Published |
|---|---|---|
| 20090242801 | METHOD OF FLUORESCENCE-MICROSCOPICALLY IMAGING A STRUCTURE IN A SAMPLE WITH HIGH THREE-DIMENSIONAL SPATIAL RESOLUTION - For imaging a structure in a sample with three-dimensional spatial resolution, a fluorophore is selected which is transferable by means of an optical transfer signal out of a first into a second photochromic state having specific fluorescence properties, and which displays a return rate back into the first photochromic state. The structure is labeled with the fluorophore. Via a common objective, the sample with the labeled structure is subjected both to the optical transfer signal in a spatially limited transfer-volume, and to an optical excitation signal exciting a portion of the fluorophore being in its second photochromic state for fluorescence in a spatially limited excitation-volume, the transfer-volume and the excitation-volume having a common centre of maximum intensity of the transfer signal and of the excitation signal, and a decrease of intensity of the transfer signal with the distance to the common centre of maximum intensity being substantially stronger than any decrease of the effective return rate of the fluorophore. Fluorescence light emitted by the excited fluorophore is detected. The common centre of maximum intensity is shifted with regard to the sample; and the steps of subjecting and detecting are repeated. | 10-01-2009 |
Johann Engelhardt, Bad Schoenborn DE
| Patent application number | Description | Published |
|---|---|---|
| 20110249311 | Method and Device for Dynamically Shifting a Light Beam with Regard to an Optic Focussing the Light Beam - For dynamically shifting a light beam ( | 10-13-2011 |
Juergen Engelhardt, Lauf DE
| Patent application number | Description | Published |
|---|---|---|
| 20090154264 | Integrated circuits, memory controller, and memory modules - In accordance with embodiments of the invention, there are provided integrated circuits, memory controller, a method for determining a level for programming or erasing a memory segment, and a method for determining a wear level score for a memory segment. In an embodiment of the invention, a method for determining a level for programming or erasing a memory segment is provided, wherein a first level for programming or erasing a memory segment is determined as a function of an initial program/erase level. Furthermore, a first updated level is determined for a subsequent program/erase operation of the memory segment and a second level for programming or erasing the memory segment subsequent to programming or erasing the memory segment is determined using the first level, wherein the second level is determined as a function of the first updated level. | 06-18-2009 |
Jurgen Engelhardt, Bad Fallingbostel DE
| Patent application number | Description | Published |
|---|---|---|
| 20100272819 | PRODUCTION OF CELLULOSE NANOPARTICLES - The present invention relates to novel nanoparticles based on cellulose and a process for producing them and their use. | 10-28-2010 |
Jürgen Engelhardt, Fallingbostel DE
| Patent application number | Description | Published |
|---|---|---|
| 20110198533 | NANOPARTICLES FROM SLIGHTLY OXIDISED CELLULOSE - The present invention provides novel nanoscale cellulose particles and also a process for their production. The cellulose-based particles obtained have volume-averaged particle sizes of less than | 08-18-2011 |
| 20110293732 | NANOPARTICLES MADE OF AMORPHOUS CELLULOSE - The present invention provides novel nanoscale cellulose particles and also a process for their production. The cellulose-based particles obtained have volume -averaged particle sizes of less than 300 nm. These nanoparticles are produced from amorphous cellulose or by amorphization of cellulose, optional subsequent hydrolysis and by input of energy into a water-containing medium after or during dispersion. | 12-01-2011 |
Kai Engelhardt, Buckenhof DE
| Patent application number | Description | Published |
|---|---|---|
| 20090122162 | Imaging system with multi-state zoom and associated methods - An image capturing device may include a detector including a plurality of sensing pixels, and an optical system adapted to project a distorted image of an object within a field of view onto the sensing pixels, wherein the optical system expands the image in a center of the field of view and compresses the image in a periphery of the field of view, wherein a first number of sensing pixels required to realize a maximal zoom magnification {circumflex over (Z)} at a minimum resolution of the image capturing device is less than a square of the maximal zoom magnification times a second number of sensing pixels required for the minimum resolution. | 05-14-2009 |
| 20110115965 | FIXED FOCAL LENGTH OPTICAL LENS ARCHITECTURE PROVIDING A CUSTOMIZED DEPTH OF FOCUS OPTICAL SYSTEM - Providing for a fixed focus optical system exhibiting extended depth of field is provided herein. By way of example, a compact and fast optical system that yields an asymmetric modulation transfer function (MTF) is disclosed. In some aspects, the asymmetric MTF results in extended depth of field for near field objects. Such a response can be particularly beneficial for small handheld cameras or camera modules having high resolution. According to some disclosed aspects, the resolution can be about 8 mega pixels. Additionally, the optical system can comprise four lenses in one aspect and five lenses in another, while remaining below about 5.3 mm total track length (TTL) for the respective systems. In at least one application, the disclosed optical systems can be employed for a high resolution compact camera, for instance in conjunction with an electronic computing device, communication device, display device, surveillance equipment, or the like. | 05-19-2011 |
Klaus Engelhardt, Weissenburg DE
| Patent application number | Description | Published |
|---|---|---|
| 20080271559 | Turn-actuator with tensile element of shape memory alloy - A turn-actuator possesses a rotatably placed driven element, which turns about an axis of rotation and has at least a first and a second tensile element of a shape memory alloy. The first and second tensile elements are affixed to the driven element, whereby the directions of rotation from torques generated by the contractions of the first and the second tensile elements act upon the driven element in opposite directions. | 11-06-2008 |
Manfred Engelhardt, Feldkirchen-Westerham DE
| Patent application number | Description | Published |
|---|---|---|
| 20120100689 | MIM CAPACITOR AND ASSOCIATED PRODUCTION METHOD - An MIM capacitor includes a first capacitor electrode, which is formed in the surface of a first intermediate dielectric, a second intermediate dielectric, which is formed on the first intermediate dielectric and has an opening that exposes the first capacitor electrode, and a first electrically conducting diffusion barrier layer, which is formed on the surface of the exposed first capacitor electrode. On the diffusion barrier layer and on the side walls of the opening there is also formed a capacitor dielectric and a second capacitor electrode on top. | 04-26-2012 |
Manfred Engelhardt, Grafrath DE
| Patent application number | Description | Published |
|---|---|---|
| 20100027033 | DEVICE FOR DETECTING MOVEMENT AND FORCES - The invention relates to an apparatus for input of movements and/or registration of forces, comprising at least one light source, at least one position sensitive device (PSD) and at least one diaphragm, wherein at least one of these three elements is moveable with respect to the two other elements. The light source is arranged at a mounting so that light from the light source is emitted through an opening in the mounting and through the at least one diaphragm onto the at least one PSD. | 02-04-2010 |
| 20110063212 | Apparatus for Input of Control Signals for Moving an Object - In one embodiment an apparatus for input of control signals is for moving an object in three spatial directions and three rotational directions and for connection to a computational unit with a display which displays at least partial areas of the object. The apparatus comprises a carrier element, an input element which is moveable with respect to the carrier element for input of the control signals, and an actuator, which is arranged at the carrier element. The actuator is designed as a rotatable or slideable element in order to detect further inputs of a user and extends at least partially around the input element. | 03-17-2011 |
Manfred Engelhardt, Dresden DE
| Patent application number | Description | Published |
|---|---|---|
| 20080277760 | INTEGRATED CIRCUIT DEVICE HAVING OPENINGS IN A LAYERED STRUCTURE - An integrated circuit device includes a substrate with a first layer situated on the substrate. The first layer defines a first opening with a cover layer deposited on the first layer and coating a sidewall portion of the first opening. A second layer is situated on the cover layer. The second layer defines a second opening extending through the second layer and through the cover layer to connect the first and second openings. | 11-13-2008 |
Marek Engelhardt, Friedewald DE
| Patent application number | Description | Published |
|---|---|---|
| 20100303637 | METHOD, APPARATUS AND USE OF THE APPARATUS FOR CONTROLLING A COMPRESSOR - A method controls a compressor for delivering a pressure medium into a pressure medium system, for example an air suspension system in a motor vehicle. In the method, the delivery of the pressure medium can be switched on and off as a function of a temperature signal by the compressor temperature being measured by a temperature sensor which is arranged on the compressor and the switching on and off of the compressor is controlled by an electronic control unit. The switching-on time duration and/or the switching-off time duration or the switching-off and/or the switching-on temperature are/is determined from the rise of the compressor temperature which is measured at short time intervals. | 12-02-2010 |
| 20110052422 | METHOD FOR CONTROLLING THE OPERATION OF A COMPRESSOR - In a method for controlling the operation of a compressor, the compressor is switched off by a controller in order to prevent thermal damage if an estimated temperature value calculated by the controller exceeds an upper threshold value. The controller calculates a cooling function as a state variable utilizing the estimated temperature value, the cooling function representing the chronological course of the cooling of the compressor. The controller determines the cooling function based on at least one first and one second estimated temperature value which are associated with points of the compressor that are at spatial distances to each other. The calculation of the cooling function is based on a temperature difference between the first and second estimated temperature values. | 03-03-2011 |
| 20120041642 | MOTOR VEHICLE HAVING A RIDE HEIGHT CONTROL SYSTEM - Motor vehicle having a closed ride height control system which contains a control unit in which a switch-off limiting value for at least one operating parameter of at least one component of the ride height control system is monitored, wherein in raising processes the activation of the component is prohibited or aborted when the switch-off limiting value is reached, and upward transgression of the switch-off limiting value of the operating parameter is permitted in the case of lowering processes. | 02-16-2012 |
Martin Engelhardt, Munchen DE
| Patent application number | Description | Published |
|---|---|---|
| 20090154640 | FOCUS DETECTOR ARRANGEMENT AND METHOD FOR GENERATING CONTRAST X-RAY IMAGES - In a focus detector arrangement and method for an x-ray apparatus for generating projection or tomographic phase-contrast images of an examination subject, a beam of coherent x-rays is generated by an anode that has areas of different radiation emission characteristics arranged in bands thereon, that proceed parallel to grid lines of a phase grid that is used to generate the phase-contrast images. | 06-18-2009 |
Martin Engelhardt, Munich DE
| Patent application number | Description | Published |
|---|---|---|
| 20090003526 | Measurement system and method for the noninvasive determination of properties of an object to be examined and contrast medium for X-ray phase-contrast measurement - A method and a measurement system are disclosed for the noninvasive determination of properties of an object to be examined and to the use of a contrast medium for X-ray phase-contrast measurement. in at least one embodiment of the invention, a mixture (suspension) consisting of a base liquid and a multiplicity of particles contained therein is used, the refractive index of the base liquid being different to the refractive index of the particles. | 01-01-2009 |
Michael Engelhardt, Heidenheim DE
| Patent application number | Description | Published |
|---|---|---|
| 20110103958 | WELLS TURBINE HAVING PASSIVE ROTOR BLADE DISPLACEMENT - The invention concerns a Wells turbine, comprising a hub with a plurality of rotor blades having a drop-shaped profile orienting from a profile nose; the rotor blades are attached to the hub in a rotary fashion by means of a foot part such that the rotor blade angle is variable with respect to the plane of rotation, wherein the associated rotational axis intersects the chord for each profile section in a threading point, which is located in a region between the profile nose and the aerodynamic center of the profile; the adjustment of the blade angle is made passively by the equilibrium occurring during the operation of the wells turbine between the aerodynamic torque, acting on the rotor blades, and the centrifugal torque, wherein the average density of the rotor blade is selected to be less than 2700 kg/m | 05-05-2011 |
Rainer Engelhardt, Leutenbach DE
| Patent application number | Description | Published |
|---|---|---|
| 20120090640 | METHOD FOR CLEANING TWO FILTERS OF A SUCTION DEVICE FOR CLEANING PURPOSES AND SUCTION DEVICE FOR PERFORMING THE METHOD - A method for cleaning first and second filters of a suction device for cleaning purposes is provided. The suction device has a dirt collection container with a suction inlet. The dirt collection container is subjected to negative pressure via first and second suction lines, respectively, following the first and second filters. First and second closing valves close first and second external air inlets, respectively, into the first and second suction lines. For cleaning the filters, the closing valves are opened, subjecting the filters to external air on the clean space side. The dirt collection container is subjected to negative pressure via the first suction line and first filter by a first suction unit and via the second suction line and second filter by a second suction unit. The suction lines are sealed off relative to each other on the clean space side at least during the cleaning of the filters. | 04-19-2012 |
Ralf Engelhardt, Lubeck DE
| Patent application number | Description | Published |
|---|---|---|
| 20110001926 | Device and Method for Performing Measurements During a Surgical Intervention by Means of an Optical Coherence Tomography Device - A device for a therapeutic treatment of the eye by means of a laser is provided, which allows a real-time monitoring of the treatment. In particular, the laser light is supplied to the treatment region via a fibre. The monitoring of the treatment happens by means of optical coherence tomography (OCT). To this end the OCT measurement beam and the treatment laser light are coupled in a probe that is put onto the eye and allows to focus the OCT measurement beam on the tissue region inside of the eye that is treated at that moment. | 01-06-2011 |
Stefan Engelhardt, Muenchen DE
| Patent application number | Description | Published |
|---|---|---|
| 20110071211 | MicroRNA (miRNA) And Downstream Targets For Diagnostic And Therapeutic Purposes - The present invention relates to a promoter region of a microRNA, the use of a microRNA, in particular miR-21, and related elements for the diagnosis and for the manufacture of a medicament for the treatment and/or prevention of fibrosis and/or fibrosis related diseases. Additionally, the invention concerns antisense oligonucleotides against targets of miR-21. A cell deficient for miR-21, the promoter region and targets of miR-21 and a knock-out organism thereof are also encompassed. Finally, the invention is directed to a method for diagnosing fibrosis and/or fibrosis related diseases and to a method for screening a pharmaceutically active compound for the treatment of fibrosis and/or fibrosis related diseases. The present invention further relates to compositions for use in the treatment, amelioration, and/or prevention of fibrosis. In certain embodiments, the compositions modulate the activity of a miRNA for the treatment, amelioration, and/or prevention of fibrosis. In certain embodiments, the compositions inhibit the activity of miR-21 for the treatment, amelioration, and/or prevention of fibrosis. | 03-24-2011 |
Stephan Engelhardt, Sonsbeck DE
| Patent application number | Description | Published |
|---|---|---|
| 20090267572 | CURRENT LIMITATION FOR A DOUBLE-FED ASYNCHRONOUS MACHINE - In a method and an apparatus for controlling the output or drawn active and reactive power of a double-fed asynchronous machine ( | 10-29-2009 |
| 20100277134 | METHOD FOR OPERATING A WIND ENERGY INSTALLATION - The invention relates to a method for operating a wind energy plant having a double-fed asynchronous machine, at least one inverter and at least one control device, wherein electrical energy is at least partly supplied into a grid via the inverter, the inverter comprises per phase at least one power semi-conductor module with at least two transistor circuits and at least two free-wheeling diodes and the inverter by using the control device is actuated at least at times via a pulse width modulation (PWM). The object, namely of providing a generic method for operating a wind energy plant in which an improved power output is effected even in the low-noise rotational speed range of the rotors, is achieved in that, at frequencies of the current to be impressed by the inverter on the machine side of less than 10 Hz, preferably less than 6 Hz, the switching-on duration and/or the switching frequency of the transistor circuits and/or of the free-wheeling diodes of the inverter are altered via the control device by taking their thermal heating into account. | 11-04-2010 |
| 20110006528 | METHOD FOR OPERATING A WIND TURBINE - A method for operating a wind turbine that includes a generator device for outputting electric energy to a network, the generator device having a stator, and a controller device for controlling the generator device. To ensure sufficient protection of the wind turbine even during network fluctuations, a network voltage is determined using a network model at least as a function of a stator voltage measured with a first measuring apparatus and a network power measured with a second measuring apparatus, and the determined network voltage and a predeterminable maximum phase angle present between the stator voltage and network voltage are used to determine the maximum effective power of the wind turbine that can be output, and the output effective power is regulated as a function of the determined maximum effective power that can be output and a target effective power predetermined by the control device. | 01-13-2011 |
| 20110153092 | METHOD OF AND APPARATUS FOR COMPENSATION OF OSCILLATION EFFECTS IN THE EVENT OF MAINS ASYMMETRY IN A DOUBLE-FED ASYNCHRONOUS MACHINE - In a method for the compensation of rotor torque oscillations upon the occurrence of mains asymmetries in relation to a double-fed asynchronous machine ( | 06-23-2011 |
| 20110210553 | Protection System of a Doubly-fed Induction Machine - The invention relates to a protection system of a doubly-fed induction machine, the system comprises a doubly-fed induction machine with a stator and a rotor, the stator of said doubly-fed induction machine is connected to a grid and the rotor of said doubly-fed induction machine is connected to the grid via a converter, said converter comprises a machine side converter, a DC-link and a line side converter. The system comprises additionally at least one crowbar, said crowbar is connected to the rotor, at least one DC-chopper provided in the DC-link, a converter controller and a separate protection device. The object of the present invention to provide a protection system and a protection method of a doubly-fed induction machine which can be easily used with high sampling rates and which provides a good protection for the doubly fed induction machine is resolved in that the DC-chopper and the crowbar are controlled with the separate protection device. | 09-01-2011 |
| 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 |
Ulrich Engelhardt, Laupheim DE
| Patent application number | Description | Published |
|---|---|---|
| 20110120064 | SEALING STATION - The sealing station in a thermoforming machine for sealing a cover sheet to a bottom sheet having pocket-like depressions to hold products includes a first mold and a second mold, the second mold having cavities to accept the pocket-like depressions in the bottom sheet. The sealing station further has a vent system, which involves an inlet channel and an outlet channel in an area of each of the cavities so that, during a sealing operation, a vent space is formed between each depression in the bottom sheet and each cavity, and air entering through the respective inlet channel passes over the depression in the bottom sheet in the vent space and escapes through the respective outlet channel. | 05-26-2011 |
Ulrike Engelhardt, Ketsch DE
| Patent application number | Description | Published |
|---|---|---|
| 20110094583 | ELECTROPLATING ADDITIVE FOR THE DEPOSITION OF METAL, A BINARY, TERNARY, QUATERNARY OR PENTANARY ALLOY OF ELEMENTS OF GROUP 11 (IB)-GROUP 13 (IIIA)-GROUP 16 (VIA) - The invention relates to electroplating additives for the deposition of a group IB metal/binary or ternary group IB-group IIIA/ternary, quaternary or pentanary group IB-group IIIA-group VIA alloy on substrates useful for thin film solar cells. The additives have the general formula (A): | 04-28-2011 |