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Hemmelmann, DE
Jan Hemmelmann, Munchen DE
| Patent application number | Description | Published |
|---|---|---|
| 20090149999 | Gearbox Noise Reduction By Electrical Drive Control - A system for damping audible noise from a drive train. One embodiment is a system with an audible noise signal from a drive train wherein a damping circuit produces a damping torque that is a phase shifted and amplified version of the noise signal that is applied to the air-gap torque of a generator or motor coupled to the drive train and effectively reduces the audible noise. | 06-11-2009 |
Jan Hemmelmann, Munich DE
| Patent application number | Description | Published |
|---|---|---|
| 20100187031 | MODULAR AUXILIARY POWER UNIT ASSEMBLY FOR AN ELECTRIC VEHICLE - A system and method for a propulsion system includes an electric motor and an energy storage unit configured to supply a primary power to the electric motor. The propulsion system also includes a plurality of auxiliary power units (APUs) configured to supply a secondary power to at least one of the electric motor and the energy storage unit. Each of the plurality of APUs includes a free-piston engine configured to generate a mechanical output, a linear generator configured to transform the mechanical output to an electrical power, and a controller. The controller receives a power command from the electric motor and/or the energy storage unit, determines an amount of secondary power needed to meet the power command, and selectively activates a number of the plurality of APUs to generate the needed amount of secondary power. | 07-29-2010 |
| 20100206957 | SYSTEM AND METHOD FOR VEHICLE TEMPERATURE CONTROL - A vehicle includes a power connector configured to mate with an electrical power grid receptacle and receive a grid power therefrom and a heating and cooling system electrically connected to the power connector to receive grid power therefrom and configured to modify a temperature the vehicle cabin. The vehicle also includes a temperature control loop configured to selectively activate and control the heating and cooling system and a controller configured to receive a first input signal comprising a desired vehicle activation time and a second input signal comprising a starting vehicle cabin temperature and a desired vehicle cabin temperature. The controller determines a temperature control loop activation time based on the first and second input signals that is prior to the desired vehicle activation time and transmits an activation signal to the temperature control loop at the temperature control loop activation time to activate the heating and cooling system. | 08-19-2010 |
| 20110121931 | ELECTRICAL ASSEMBLY FOR USE WITH A ROTARY TRANSFORMER AND METHOD FOR MAKING THE SAME - An electrical assembly is provided. The electrical assembly includes a ring having at least two annular segments. Each annular segment includes a first portion and a second portion. The second portion tapers from the first portion toward an end of the second portion to define a circumferential cross-sectional area of the ring that is substantially constant along a radius of the electrical assembly. At least one winding is coupled about the ring. | 05-26-2011 |
| 20110221555 | ELECTRICAL ASSEMBLY AND METHOD FOR MAKING THE SAME - An electrical assembly for use with a rotary transformer is provided. The electrical assembly includes a assembly structure having a first flange positioned proximate a first end portion of the assembly structure and a second flange positioned proximate a second end portion of the assembly structure. The electrical assembly further includes at least one lamella coupled to the assembly structure. The at least one lamella extends from the first flange to the second flange. | 09-15-2011 |
| 20110285132 | VARIABLE SPEED MACHINE ASSEMBLY AND METHOD FOR MAKING THE SAME - A variable speed machine assembly includes an input shaft, a variable speed magnetically geared generator coupled to the input shaft, an electrical machine coupled to the input shaft, and a power converter coupled to the variable speed magnetically geared generator and the electrical machine. The power converter is configured to use electrical power output by the electrical machine to control a frequency of power output by the variable speed magnetically geared generator. | 11-24-2011 |
Jan E. Hemmelmann, Munich DE
| Patent application number | Description | Published |
|---|---|---|
| 20090206705 | FASTENERS WITH WELDED ULTRASONIC STRESS TRANSDUCERS - An apparatus and method of mounting a stress transducer to a fastener includes securing the transducer to a weld insert, and welding the insert to the fastener. | 08-20-2009 |
Jan E. Hemmelmann, Muenchen DE
| Patent application number | Description | Published |
|---|---|---|
| 20120098374 | VARIABLE-SPEED MAGNETIC COUPLING AND METHOD FOR CONTROL - An apparatus includes a first rotor operatively connected to an output shaft and holding a first array of pole pieces; a second rotor operatively connected to an input shaft coaxially with the first rotor and holding a second array of pole pieces; and an array of field windings disposed coaxially with the first and second rotors. The array of field windings being arranged to interact magnetically with a harmonic frequency of the magnetic field of the first or second array of pole pieces in a magnetically geared manner and being selectively energizable to control electromagnetic coupling of the first array of pole pieces with the second array of pole pieces, and thereby to transfer at least one of torque and speed from the input shaft to the output shaft. | 04-26-2012 |
Jan Erich Hemmelmann, Munchen DE
| Patent application number | Description | Published |
|---|---|---|
| 20100040470 | WIND ENERGY SYSTEM WITH FLUID-WORKING MACHINE WITH NON-SYMMETRIC ACTUATION - The invention relates to a wind energy system with hydraulic energy transmission with non-symmetric actuation. The non-symmetric actuation is caused by valve control and mechanical means for controlling the actuation of the pistons. A cylinder unit is provided comprising a drive unit and an output unit associated with two hydraulic connections. The drive and the output unit comprise a minimum of two cylinders, in which pistons are reciprocating. Some of the cylinders can be switched off during low wind speeds. The cylinders communicate with a low pressure manifold and a high pressure manifold. These manifolds are part of the hydraulic connections. Use of the fluid-working machine as transmission in wind energy systems increases the overall economical efficiency. | 02-18-2010 |
Jan Erich Hemmelmann, Bavaria DE
| Patent application number | Description | Published |
|---|---|---|
| 20090301224 | MAGNETOSTRICTIVE SENSING SYSTEMS AND METHODS FOR ENCODING - A magnetostrictive measurement system having one or more encoded polarized magnetic regions disposed circumferentially about a shaft, wherein adjacent magnetic regions along a section of the shaft have opposing polarities. In one embodiment the shaft is hollow and the encodings are interiorly disposed while in another embodiment the encodings are on the exterior surface of the shaft. There are one or more sensors, such as contact sensors, disposed about the shaft wherein the sensors enable measurements of at least one of bending moments or torque sensing. The sensors can also include non-contact sensors measuring the magnetic flux densities caused by the alternating magnetic fields from the rotating shaft. A processing section is used to process the sensor measurements, wherein the sensor measurements are used to compute at least one of shaft power, torque, speed, and bending moments. | 12-10-2009 |
| 20100079016 | INTEGRATED COOLING CONCEPT FOR MAGNETICALLY GEARED MACHINE - A magnetically geared machine having an integrated cooling concept is provided. The machine includes a rotor having an inner surface and an outer surface, a magnet assembly coupled to one of the inner or outer surfaces of the rotor, and a stator having a plurality of stator windings. The machine further includes a magnetic flux modulator interposed between the rotor and the plurality of stator windings, where the flux modulator includes a plurality of magnetically conductive portions and a plurality of non-magnetically conductive portions placed alternately, where one or more of the plurality of non-magnetically conductive portions comprise a channel for a cooling fluid. | 04-01-2010 |
Jan Erich Hemmelmann, Munich DE
| Patent application number | Description | Published |
|---|---|---|
| 20090169380 | MAGNETOSTRICTIVE MEASUREMENT OF TENSILE STRESS IN FOUNDATIONS - A foundation for supporting a structure is provided. The foundation includes a foundation body, at least one anchor bolt connecting a lower anchor plate and the structure, a magnetostrictive load measuring sensor for measuring loads on the at least one anchor bolt, the magnetostrictive load measuring sensor being positioned within the foundation body. | 07-02-2009 |
| 20110006865 | IN-SITU MAGNETIZER - A magnetizer including at least one reconfigurable magnetic flux guide coil is disclosed. A method of magnetizing a permanent magnet in-situ a mechanical member is also disclosed. | 01-13-2011 |
| 20110150497 | CONTACTLESS INFRARED DATA TRANSMISSION FOR WIND TURBINES - An apparatus for enabling transmission of signals and data via means of infrared (IR) light for a wind turbine includes a plurality of IR data communication elements configured to provide unidirectional and bidirectional IR data exchange between non-rotating portions of the wind turbine and the rotatable wind turbine hub. | 06-23-2011 |
Jan Erich Hemmelmann, Muenchen DE
| Patent application number | Description | Published |
|---|---|---|
| 20120025527 | SYSTEM AND METHOD TO PROVIDE CONSTANT SPEED MECHANICAL OUTPUT IN A MACHINE - A system to provide constant speed mechanical output in a wind turbine is provided. The system includes at least one electrical machine configured to convert a rotary mechanical power received from a main gear to a machine electrical power. The system further includes one or more electrical converters electrically coupled to the machine and configured to convert the machine electrical power from a direct current (DC) power to an alternate current (AC) power or from the alternate current (AC) power to the direct current (DC) power, where the converters generate a differential electrical power. A torque converter is electrically coupled to the electrical converters and generates a constant speed mechanical output employing the differential electrical power received from the one or more electrical converters. | 02-02-2012 |
Klaus Hemmelmann, Odenthal DE
| Patent application number | Description | Published |
|---|---|---|
| 20100266802 | DECORATIVE SKIN FOR AN AIRBAG COVER - The invention relates to a method for producing a decorative skin of an airbag cover having a weakened area, wherein a predetermined breaking groove is integrally formed into the decorative skin. The invention further relates to a decorative skin having a weakened area. | 10-21-2010 |
Klause Hemmelmann, Odenthal DE
| Patent application number | Description | Published |
|---|---|---|
| 20100062223 | LASER WELDED SEAT STRUCTURE - A structure includes a first part provided in a first plane and second and third parts provided in a second plane located under the first plane. The second and third parts are welded together at a welded seam. The first part has at least one recess configured to receive a welding mechanism that forms the welded seam on the second and third parts. Another structure includes an “n” number of layers, n being at least three. Adjacent layers are in contact with one another and are connected by a welded seam. The structure also includes an outer surface. The layers between the outer surface and the respective welded seam define a recess through which a welding mechanism is configured to be passed as far as the respective layers to be welded to produce the welded seam. | 03-11-2010 |