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Brandhoff
Stefan Brandhoff, Munich DE
| Patent application number | Description | Published |
|---|---|---|
| 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 |
Stefan Brandhoff, Haag An Der Amper DE
| Patent application number | Description | Published |
|---|---|---|
| 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 |
Stefan Brandhoff, Niskayuna, NY US
| Patent application number | Description | Published |
|---|---|---|
| 20110285490 | An 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. | 11-24-2011 |
Stefan Brandhoff, Haag A.d. Amper DE
| Patent application number | Description | Published |
|---|---|---|
| 20120019073 | APPARATUS AND SYSTEM FOR POWER CONVERSION - An apparatus includes a DC-link, a voltage converter, a bus voltage controller, and a supervisory controller. The voltage converter is configured to convert a first DC voltage into a second DC voltage based on a command signal and based on an adjustment signal and to supply the second DC voltage to the DC-link. The bus voltage controller is configured to iterate calculation of the adjustment signal to communicate each iterated calculation of the adjustment signal to the voltage converter. The supervisory controller is configured to iterate calculation of the command signal and to communicate each iterated calculation of the command signal to the voltage converter and to the bus voltage controller. A frequency of the bus voltage controller to communicate each iterated calculation of the adjustment signal is higher than a frequency of the supervisory controller to communicate each iterated calculation of the command signal. | 01-26-2012 |
Stefan Brandhoff, Garching B. Munchen 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 |