| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 363148000 | PHASE CONVERSION (PH1-PH2) WITHOUT INTERMEDIATE CONVERSION TO D.C. | 14 |
| 20110194323 | METHOD FOR OPERATION OF A CONVERTER CIRCUIT, AS WELL AS AN APPARATUS FOR CARRYING OUT THE METHOD - A method is provided for operation of a converter circuit. The converter circuit has at least two phase modules, where each phase module has a first and a second sub-converter system, and the sub-converter systems for each phase module are connected in series with one another. Each sub-converter system includes a plurality of series-connected two-pole switching cells. In the method, the control signals for the switching cells are additionally formed from a damping signal. The damping signal is formed from a measured current through the respective sub-converter system and from a predeterminable resistance value, in order to attenuate undesirable currents in the sub-converter systems. | 08-11-2011 |
| 20100149848 | MATRIX CONVERTER SPACE VECTOR MODULATION METHOD - [Problem] To provide a space vector modulation method for a matrix converter which uses only one carrier for three phases when a carrier comparison is made. | 06-17-2010 |
| 20110051479 | Systems and Methods for Controlling Phases of Multiphase Voltage Regulators - A multi-phase voltage regulator is disclosed. The multi-phase voltage regulator includes a voltage regulator controller. Phase output stages are coupled to the voltage regulator controller. The voltage regulator controller and the phase output stages are configured to provide regulated voltages at one or more output nodes. The voltage regulator controller is configured to monitor one or more conditions of the phase output stages and to control one or more of the phase output stages based, at least in part, on the one or more conditions. | 03-03-2011 |
| 20110075465 | DIRECT CONVERTER AND SYSTEM INCLUDING A DIRECT CONVERTER - A direct converter includes n input phase connections and p output phase connections, where n≧2 and p≧2. The direct converter also includes (n·p) two-pole switching cells for switching at least one positive voltage and at least one negative voltage between the poles. Each output phase connection is connected in series with each input phase connection, respectively, via a switching cell. To enable any desired and continuous current flow setting from an input phase connection to an output phase connection of the direct converter and, moreover, to exchange electrical energy between the two-pole switching cells of the direct converter, at least one inductance is connected into each series connection. A system including a direct converter is also provided. | 03-31-2011 |
| 20110063883 | INVERTER CONTROL CIRCUIT AND INTERCONNECTION INVERTER SYSTEM HAVING THAT INVERTER CONTROL CIRCUIT - An inverter control circuit ( | 03-17-2011 |
| 20100080031 | POWER FREQUENCY CONVERTER - A current control circuit (active element) is provided that is connected between a rectifier of a DC power source and a smoothing capacitor in a power frequency converter and that controls a variation in the rectified current caused by a variation in the instantaneous power consumption of the load device. When the rectified current increases, the current control circuit limits the current to have a reference current value or lower and, when the rectified current decreases, the current control circuit increases the current to have a value close to the reference current to thereby suppress the rectified current from the rectifier to a substantially-constant value. This consequently mitigates the influence on the primary power source by the variation in the instantaneous power consumption of the load device, thus clearing the Load Demand Variation specification required for the power source to be used in an aircraft. | 04-01-2010 |
| 20120218801 | CURRENT-SOURCE POWER CONVERTING APPARATUS - A current-source power converting apparatus in an embodiment includes a current-reference generating unit, a polarity determining unit, a PWM-pulse-signal generating unit, and a drive-signal generating unit. The current-reference generating unit outputs a phase current reference and a line-to-line current reference. The polarity determining unit determines a polarity of the phase current reference. The PWM-pulse-signal generating unit generates a PWM pulse signal by comparing the line-to-line current reference and a carrier signal. The drive-signal generating unit generates a drive signal that drives each of a plurality of switching elements, based on the PWM pulse signal and a polarity of the phase current reference. | 08-30-2012 |
| 363149000 | With automatic voltage magnitude or phase angle control | 1 |
| 20110069519 | Electrical circuit, in particular used for generating electrical power - An electrical circuit, in particular a circuit used for generating electric power, wherein this circuit comprises a generator with n phases, a converter and a transformer to which a p-phase load can be connected. The converter comprises m partial converters, each of the partial converters is composed of p units and each of these units is provided with n/m switching circuits. The switching circuits of the individual units are connected symmetrical to the generator. | 03-24-2011 |
| 363150000 | By dynamoelectric machine converter | 1 |
| 20080247211 | Active generator control sequence - A method for operating a matrix converter to convert n phases of a generator into alternating voltage with n | 10-09-2008 |
| 363152000 | By induction-type converter | 5 |
| 20110013440 | RECTIFIER CIRCUIT - Switches perform switching at a timing when a first phase voltage and a second phase voltage outputted from a three-phase voltage source have a phase difference of 90°. Then, a three-phase/two-phase conversion inductor outputs a pair of AC currents, and a rectification and a single-phase pulse-width modulation are performed on each of AC currents. Modulated currents obtained as a result of the rectification and the single-phase pulse-width modulation are synthesized, to generate an output current, which is supplied to a circuit in which a capacitor and a load are connected in parallel with each other. | 01-20-2011 |
| 363153000 | Transformer type | 4 |
| 363154000 | Stationary | 4 |
| 20120106223 | CIRCUIT FOR CONVERTING POWER BETWEEN A THREE-PHASE GRID AND A SINGLE-PHASE GRID - Described is a circuit for converting electric power between a three-phase grid and a single-phase grid. The circuit includes, in at least one embodiment, a first transformer that is connected to the three-phase grid, a number of first converter stages assigned to the first transformer, the associated DC intermediate circuits and the associated second converter stages. The second converter stages are connected to each other at the alternating-current side outputs with the aid of a series connection. | 05-03-2012 |
| 20110013441 | STATIC CONVERTER AND METHOD FOR STARTING UP THE CONVERTER - A static converter is disclosed. In at least one embodiment, the static converter includes a power converter circuit which has a plurality of interconnected module branches, wherein each module branch has one or more electrically series-connected two-pole submodules as switchable voltage sources which each include a capacitor as an energy store and power semiconductors as electronic switching elements. A device for precharging the capacitors is included, including at least one power electronics device for providing an adjustable precharge current. The at least one power electronics device, being supplied with power by an auxiliary supply system and being connected to a converter bridge via a precharge transformer, can be used to achieve a sufficiently high voltage level for the capacitors of the submodules when the converter is started up so as to achieve firstly the minimum voltage for supplying power to the power semiconductors and secondly the minimum voltage for synchronization to the systems. A method for starting up such a converter is also disclosed. | 01-20-2011 |
| 20110051480 | 20 PHASE-SHIFTING AUTOTRANSFORMER - The invention relates to autotransformers used notably for converting alternating (AC) electric power into direct (DC) power. And more precisely, to autotransformers designed to be connected to a three-phase voltage supply of given amplitude supplying three first output voltages (C | 03-03-2011 |
| 20090059638 | PORTABLE DEVICE FOR GENERATING TWO PHASES FROM A SINGLE ELECTRICAL PHASE - A portable device for generating two electrical phases from a single electrical phase. The portable device includes a housing having a toroidal transformer therein. An input terminal block and an output terminal block are mounted to the housing and are electrically connected to the toroidal transformer. The portable device is sized to fit on the rear floor of a vehicle and an appropriate weight to be carried by a single person. | 03-05-2009 |
