Patent application number | Description | Published |
20100330365 | STRAND-LIKE MATERIAL COMPOSITE WITH CNT YARNS AND METHOD FOR THE MANUFACTURE THEREOF - A strand-like material is formed of CNT yarns that are embedded in a metal matrix. The embedding in a common matrix has the advantage in that the material composite exhibits an improved electrical conductivity. This lies in the ability for electrons to switch from the CNT to the matrix and back again. The strand-like material composite is therefore suitable for use as an electrical conductor. Further proposed is a method for producing the strand-like material composite. | 12-30-2010 |
20110057751 | SWITCHING DEVICE - A switching device includes a movable contact for opening and closing a circuit, and a magnetic shape memory alloy for driving the movable contact. In at least one embodiment, the switching device includes at least one actuator that activates the holding mode of the switching device. | 03-10-2011 |
20120105235 | METHOD FOR IDENTIFYING DIRT AND/OR DEW ON COMPONENTS OF A VOLTAGE INTERMEDIATE CIRCUIT CONVERTER - The invention relates to a method for identifying dirt and/or dew on components of a voltage intermediate circuit converter. According to the invention, the temporal curve of a partial discharge pulsed current is detected at least during a precharging process of an intermediate circuit capacitor of the voltage intermediate circuit converter comprising at least one capacitor, wherein a frequency spectrum is calculated from said current pulse, and wherein depending of the result, a dirt warning and/or a dew warning is activated. Thus, the degree of dirt and/or dew of said voltage intermediate circuit converter can be determined at least during a charging process of an intermediate circuit capacitor of a voltage intermediate circuit converter, thereby preventing a breakdown including the consequences thereof. | 05-03-2012 |
20120267988 | CONDITION MONITORING SYSTEM FOR A MOTOR - In order to enable simple, low-cost monitoring of a motor, a switch box cover for the motor, a condition monitoring system has a sensor unit for detecting a measured variable of the motor, a communication device, which is designed to provide a characteristic value that characterizes the measured variable to a reading device, and a supply unit for supplying the sensor unit with energy. | 10-25-2012 |
20120319678 | BEARING CURRENT SENSOR DEVICE HAVING AN ENERGY CONVERTER - A sensor device includes an exchangeable module shaped as a substantially annular disk and concentrically mounted at or on a shaft of an electric machine. The exchangeable module includes a detection device for detecting a bearing current of the electric machine and an energy converter device configured to convert mechanical energy of the shaft into electrical energy for transmission to the detection device. | 12-20-2012 |
20120319723 | ELECTRIC MACHINE FOR WHICH THE GROUNDING FUNCTION IS MONITORED AND METHOD - The grounding quality of an electric machine should be better monitored. Therefore, an electric machine is proposed, comprising a stator ( | 12-20-2012 |
20120330580 | SYSTEM AND METHOD FOR DETERMINING A BEARING STATE - In a system for ascertaining a bearing state and in a method for ascertaining a bearing state of a bearing of an electric machine, measurement value ( | 12-27-2012 |
20130066566 | METHOD AND DEVICE FOR THE EARLY DETECTION OF THE DEVELOPMENT OF DAMAGE IN A BEARING - A method for early detection of developing damage in a bearing caused by flow of a bearing current includes evaluating a long-term measurement of a measured variable representative of a bearing current amplitude of a bearing current during a bearing operation, representing—based on the evaluation—measurement results in form of a histogram which displays a number of bearing currents per time interval in each interval of the bearing current amplitude, and evaluating the histogram representation of the measurement results through pattern comparison. A device for carrying out the method is also disclosed. | 03-14-2013 |