| Patent application number | Description | Published |
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| 20110199792 | Converter Comprising at least one Normally on Semiconductor Switch - A converter for converting a DC input voltage includes two input lines receiving the DC input voltage; at least one normally off semiconductor switch which is not conductive without application of a control voltage to its gate and which is provided in one of the input lines. The converter also includes electric circuitry connected between the input lines and including at least one normally on semiconductor switch which is conductive without application of a control voltage to its gate; and a controller. In operation of the converter, the controller operates the at least one normally on semiconductor switch of the electric circuitry by temporarily applying a first control voltage to its gate; and permanently applies a second control voltage to the gate of the at least one normally off semiconductor switch in the one input line. Any normally on semiconductor switch of the electric circuitry is spatially separated and thus thermally isolated from any normally off semiconductor switch. | 08-18-2011 |
| 20130320778 | Protective Device for a Photovoltaic System - A protective device for a photovoltaic system includes at least one input for connection to a photovoltaic generator and at least one output for delivery of an electric power supplied from the photovoltaic generator. The protective device includes a detection device for a signal applied via the at least one output, and is configured to provide a low level-limited voltage at the at least one output if an applied signal does not meet a predetermined criteria, and is further configured to connect the at least one output with low resistance to the at least one input via a switching device if the applied signal meets the predetermined criteria. | 12-05-2013 |
| 20130335178 | DYNAMICALLY BIASED INDUCTOR - An inductor apparatus includes an inductor winding, a core defining a magnetic circuit for a magnetic flux generated by a current flowing through the inductor winding, at least one permanent magnet magnetically biasing the core by its permanent magnetization, and a magnetization device operable for adjusting a desired magnetization of the permanent magnet. The at least one permanent magnet is arranged within the magnetic circuit of the magnetic flux generated by the current flowing through the inductor winding. The magnetization device includes a magnetization winding and a circuitry configured to subject the magnetization winding to magnetization current pulses, thereby generating at a location of the permanent magnet a magnetic field which is able to change the permanent magnetization of the permanent magnet. | 12-19-2013 |
| 20140035711 | Magnetically Biased AC Inductor with Commutator - An AC inductor includes a core, at least one permanent magnet for magnetically biasing the core, an inductor winding on the core, and a circuitry which guides an alternating current which flows through the AC inductor in such a way through the inductor winding that, during each half-wave of the alternating current, the alternating current generates a magnetization of the core which is opposite to the magnetization by the permanent magnet. This circuitry includes a commutator which guides the alternating current flowing between two contacts of the AC inductor through the same part of the inductor winding with a same flow direction during each of the half-wave of the alternating current. | 02-06-2014 |
| 20140112025 | Capacitor Arrangement for an Intermediate Circuit of a Volatage Converter - The disclosure relates to a capacitor arrangement for an input circuit or intermediate circuit of a voltage transformer comprising at least two capacitors and two connection nodes. Switching elements are provided, by means of which the at least two capacitors are connected in parallel with each other in a first operating state and are connected in series with each other in a second operating state. The disclosure also relates to a voltage transformer arrangement comprising such a capacitor arrangement and an operating method for a capacitor arrangement. | 04-24-2014 |
| 20140191589 | SAFETY DEVICE FOR A PHOTOVOLTAIC SYSTEM - The disclosure relates to a safety device for a photovoltaic system for feeding into a power supply system, that includes at least one input for connection to a PV generator, at least one output for connection to an inverter, and a switching element for de-energizing the at least one output. The safety device includes an evaluating unit configured to switch the switching element based on a low-frequency signal at the at least one output. The disclosure also relates to a method for operating such a safety device. | 07-10-2014 |
| 20140204613 | PROVIDING CONTROL POWER WITH A PHOTOVOLTAIC SYSTEM - For controlling a photovoltaic system connected to an AC power grid and including a photovoltaic generator and an inverter, electric power which includes positive and negative dynamic control power is transferred by means of the inverter between the photovoltaic generator and the AC power grid as a function of a received power control signal. | 07-24-2014 |
| 20150085550 | BIDIRECTIONAL CONVERTER WITH PREFERENTIAL DIRECTION AND REACTIVE POWER-CAPABLE INVERTER HAVING SAID CONVERTER - A half-bridge of a bidirectional converter is divided into a first and a second conduction path connected in parallel. In each of the conduction paths a switching element and a freewheeling diode are connected in series, and the center points of the conduction paths are connected via a second inductor. The second inductor is connected in series with a first inductor which is connected to the center point of the second conduction path. The half-bridge has two operating modes. In each of the two operating modes the switching element in one of the two conduction paths is clocked at a high frequency to cause a flow of energy in one of two directions between a pair of high voltage-side connections and a pair of low voltage-side connections to the half-bridge. The two switching elements are of different types, the switching element in the first conduction path causing higher switching losses. | 03-26-2015 |
| 20160047845 | METHOD AND DEVICE FOR MONITORING AND MEASURING A CURRENT ON A MAGNETICALLY BIASED CHOKE - In order to measure a choke current through a choke, a flux density of a magnetic field which is emitted by the choke is consecutively measured at a sampling rate at a location which is fixed in relation to the choke. A magnetic bias of the choke is ascertained from the measurement values of the flux density at a known choke current which occurs during operation of the choke, wherein the choke current is known only in longer time intervals than the inverse value of the sampling rate during measurement of the flux density. The actual choke current is determined from the actual measurement values of the flux density taking into account the ascertained magnetic bias. | 02-18-2016 |
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| 20130229076 | Miniature Motor and Bearing Arrangement - Electric miniature motor, comprises bearings; stationary assemblies having end faces; and metallic configurations for seating the bearings are formed at the end faces. At least one of the bearings is a roller bearing wherein the outer diameter of the roller bearing is smaller than the inner diameter of the corresponding configuration for seating the bearing; and the roller bearing is connected by at least one welded joint to the configuration. | 09-05-2013 |
| 20130229077 | Miniature Motor and Bearing Arrangement - Electric miniature motor comprises bearings; stationary assemblies having end faces; metallic configurations for seating the bearings are formed at the end faces of the stationary assemblies; and at least one of the bearings is a roller bearing wherein an inner ring of the roller bearing is connected by at least one welded joint to a shaft of the motor. | 09-05-2013 |
| 20130241373 | Miniature Motor and Housing Fabrication - Method for fabricating an electric miniature motor, substantially comprising a housing assembly, a rotor assembly, a power transmission and bearing assembly and a second bearing assembly, wherein the housing assembly comprises a housing tube having a division extending in the axial direction over an entire length of the housing tube, comprising the following steps of a) inserting a cylindrical core having a defined outer diameter into the housing assembly; b) adjusting an inner diameter of the housing assembly to an outer diameter of the core; c) fixing the inner diameter of the housing assembly by fixing the housing tube in an area of the division; and d) removing the cylindrical core. | 09-19-2013 |
| 20130285496 | Miniature Motor and Bearing Arrangement - Electric miniature motor comprises bearings; stationary assemblies having end faces; and metallic configurations disposed at the end faces for seating the bearings. At least one of the bearings is a sleeve bearing of sintered material inserted into a massive ring of weldable material, the outer diameter of which is smaller than the inner diameter of the corresponding configuration for seating; and the ring is connected by at least one welded joint to the configuration for seating. | 10-31-2013 |
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| 20080288047 | Stent for Introducing Into Human Body Cavities, in Particular Into Blood Vessels - The invention relates to a stent ( | 11-20-2008 |
| 20090177079 | MEDICAL IMAGING SYSTEM HAVING AN INTEGRATED INJECTION DEVICE - Various embodiments of the present invention relate to an MRI system ( | 07-09-2009 |
| 20100042068 | HYDRAULIC INJECTION SYSTEM AND INJECTION METHOD - Disclosed is an injection system ( | 02-18-2010 |
| 20120213524 | PROCESS AND SYSTEM FOR PROVIDING ELECTRICAL ENERGY TO A SHIELDED MEDICAL IMAGING SUITE - A process and system are disclosed for supplying electrical energy to a device located in a room housing an imaging system (such as an MRI system, for example), wherein the room is shielded from external electromagnetic fields. Certain embodiments of the present invention provide systems and processes for emitting electromagnetic radiation in the wavelength range of the light spectrum from at least one light emission device. Embodiments of the present invention further provide a process and system for transforming the electromagnetic radiation into electrical energy using at least one transducer device located in the room, and supplying the electrical energy to the device so as to minimize interfering electromagnetic fields within the room. | 08-23-2012 |
| 20150065875 | NAVIGATION ATTACHMENT AND UTILIZATION PROCEDURE - A navigation attachment for a manually guided instrument which is designated for the surgical and/or therapeutic treatment of a body and/or for implementation of a diagnostic procedure on the body is provided. The navigation attachment includes a fastener adapted to be fixedly connected with the instrument; at least one image pickup unit, including a device to determine a distance between the navigation attachment and a surface of the body; wherein at least three distances are usable to represent a position (x, y, z, t) of the instrument and/or a front section of the instrument in relation to the body or to a component of the body. Further, a navigation procedure is provided. | 03-05-2015 |
