1
Gerd Griepentrog, Reinhard Maier, Andreas Pohl: Method for the wireless and contactless transport of energy and data, and corresponding device. Siemens Aktiengesellschaft, Harness Dickey & Pierce, October 7, 2008: US07432622 (15 worldwide citation)

In installations including fixed and mobile structural elements and a rotary current motor as a drive, the rotary current motor can be used for the wireless transmission of both energy and/or data. The transmission from the fixed structural elements to the mobile structural elements of the rotary cu ...


2
Klaus Dostert, Norbert Elsner, Gerd Griepentrog, Reinhard Maier, Wilfried Matthee: Method and device for transmitting data on at least one electrical power supply line. Siemens Aktiengesellschaft, Morrison & Foerster, January 9, 2007: US07161985 (12 worldwide citation)

The orthogonal frequency division multiplexing (OFDM) method is well-known for transmitting data on electrical power supply lines. According to this method, the items of information to be transmitted are distributed among numerous carriers, and the composite signal of the modulated carrier signals i ...


3
Peter Friedrichs, Gerd Griepentrog, Reinhard Maier, Heinz Mitlehner, Reinhold Schörner: Electronic switching device. Siemens Aktiengesellschaft, Harness Dickey & Pierce, April 17, 2007: US07206178 (10 worldwide citation)

A switching device includes a working circuit, to which an operating voltage can be or is applied to which has at least one electronic switching element. This switching element includes at least one control terminal for applying a switching signal and is switched off or switched on depending on the ...


4
Gerd Griepentrog: Method and configuration for identifying short circuits in low-voltage networks. Siemens Aktiengesellschaft, Herbert L Lerner, Laurence A Greenberg, Werner H Stemer, November 6, 2001: US06313639 (9 worldwide citation)

A method for identifying short circuits in a low-voltage network includes the step of determining a first envelope and a second envelope for a plurality of locus curves of a current steepness as a function of a current in a low voltage network, the first and second envelopes including all switching ...


5
Gerd Griepentrog, Günter Lins, Reinhard Maier: Apparatus for torque measurement on rotating torque shafts. Siemens Aktiengesellschaft, Herbert L Lerner, Laurence A Greenberg, Werner H Stemer, November 20, 2001: US06318187 (6 worldwide citation)

Torque measurement is required in motors, in particular. It is already known to generate response signals in an axially offset manner at least at two points on a torque shaft by irradiating light onto the rotating torque shaft. An azimuthal offset of those signals produced by the torque over and abo ...


6
Gerd Griepentrog, Diethard Runggaldier: Method and device for determining the torque of an induction machine. Siemens Aktiengesellschaft, Harness Dickey & Pierce, July 15, 2003: US06594592 (6 worldwide citation)

In a method and device for determining the torque of an induction machine, stator terminal voltages and the stator terminal currents are integrated and then high-pass filtered to determine a space vector of the concatenated stator flux. The torque is calculated therefrom by multiplication by a compl ...


7
Gerd Griepentrog, Diethard Runggaldier: Method for measuring the speed of an induction machine. Siemens, Harness Dickey & Pierce, July 2, 2002: US06414463 (6 worldwide citation)

In order to measure the rotation speed of an induction machine whose stator is connected via a controllable AC controller to a single-phase or polyphase AC power supply system, the stator is disconnected from the AC power supply system for at least a predetermined time period (&Dgr;t). This is prefe ...


8
Gerd Griepentrog, Lynn Johnson, Diethard Runggaldier: Method for operating asynchronous motors and corresponding device. Siemens Aktiengesellschaft, Harness Dickey & Pierce, March 22, 2005: US06870333 (5 worldwide citation)

Asynchronous motors are controlled by way of two- or three-phase controllers that include at least two pair of thyristors connected in antiparallel and fired at certain intervals. According to the inventive method, a fundamental wave with the desired frequency is defined for the first phase and in t ...


9
Gerd Griepentrog, Holger Hochgraef, Reinhard Maier: Method for preventing making on electrical short circuits existing in branches and corresponding device. Siemens Aktiengesellschaft, Harness Dickey & Pierce, July 22, 2003: US06597552 (5 worldwide citation)

A method is for preventing tapping into existing short circuits in branches. A power supply momentarily is connected in a test circuit at a defined instant of the power supply voltage and at least the current in the test time period is detected and evaluated as a criterion for a short circuit. The s ...


10
Gerd Griepentrog, Reinhard Maier, Peter Priebe, Egid Schneider: Method and device for transmitting and receiving a control signal to a vehicle. Siemens Aktiengesellschaft, July 22, 2003: US06597137 (5 worldwide citation)

The invention relates to a method for transmitting a control signal to a vehicle which is driven using an electrical drive current which is fed into a traction current conductor at a drive current feed point. In order to ensure that the transmission of the control signal is very largely unaffected b ...



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