| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 363001000 | CASCADED OR COMBINED, DIVERSE CONVERSIONS IN WHICH THE FREQUENCY OR PHASE OR COMBINED CONVERSION IS WITHOUT INTERMEDIATE CONVERSION TO D.C. | 11 |
| 20140321165 | OPTIMIZED VOLTAGE-FREQUENCY CONTROL - A method for controlling an electronic circuit, characterised in that it comprises a step of feedback control of a current voltage-frequency operating point relative to a reference curve of a voltage-frequency domain of operation associated with the circuit, to bring the circuit from a first operating point to a second operating point, said reference curve linking said first and second operating points in an optimal trajectory relative to a boundary of said domain | 10-30-2014 |
| 363002000 | Current and phase (e.g., D.C.-Ph1-Ph2) | 5 |
| 20140185326 | POWER CONVERSION DEVICE - There is disclosed a power conversion apparatus 3 for converting polyphase ac power directly to ac power. A conversion circuit includes a plurality of first switching devices | 07-03-2014 |
| 363003000 | Phase 1 to phase 2 to D.C. | 4 |
| 20080278967 | AC TO DC POWER CONVERTER FOR AEROSPACE APPLICATIONS - Three coils, each having several serial windings, have selected windings connected in a delta. Input AC power is applied through outrigger windings at the delta apices. At least two strategically located, direct tap, natural output points are provided at each side of the delta. For 6-phase output, only the six natural output points are required. For 9-phase output, an additional central output terminal connects to each side of the delta through a stub winding. The 6-phase or 9-phase output is passed to a rectifier circuit. | 11-13-2008 |
| 20140016356 | AC/DC POWER CONVERSION SYSTEM AND METHOD OF MANUFACTURE OF SAME - A power converter has a transformer having three primary windings configured to receive respective phases of a three-phase alternating current (AC) input signal in a delta configuration and three secondary windings, each split into two portions, wherein the portions are coupled together in a regular hexagon. The power converter includes a rectifier having a first rectifier path coupled between taps of the secondary windings and a positive output of the power converter and a second rectifier path coupled between taps of the secondary windings and a negative output. One of the secondary windings may be reversed with respect to the other secondary windings. The primary windings may be split with a corresponding secondary winding sandwiched between portions of the primary. One of the paths may have a different inductance than the other path. | 01-16-2014 |
| 363005000 | With interphase transformer | 1 |
| 20110103096 | THIRTY-SIX PULSE POWER TRANSFORMER AND POWER CONVERTER INCORPORATING SAME - Embodiments of the present invention provide novel techniques for using multiple 18-pulse rectifier circuits in parallel. In particular, each rectifier circuit may include an autotransformer having 15 inductors coupled in series, joined by 15 nodes interposed between pairs of the inductors. The inductors may be represented as a hexagon in which alternating sides of the hexagon have two and three inductors, respectively. Each rectifier circuit may also include three inputs for three-phase AC power coupled to alternating vertices of the hexagonal representation and nine outputs for AC power coupled between each node that is not a vertex of the hexagonal representation and a respective diode bridge. Outputs of the diode bridges for the rectifier circuits may be coupled to a DC bus. In addition, a means for reducing circulating current between the parallel rectifier circuits and for promoting load sharing between the parallel rectifier circuits is also provided. | 05-05-2011 |
| 363007000 | With dynamic rectifier in phase 2 to D.C. stage (e.g., commutator type) | 1 |
| 20090147540 | METHOD FOR OPERATING A CONVERTER CIRCUIT - A method and arrangement are disclosed for operating a converter circuit. Such a converter circuit has a converter unit having a multiplicity of drivable power semiconductor switches. The converter unit is connected to an electrical AC voltage supply system on the AC voltage side. The drivable power semiconductor switches are driven by means of a drive signal formed from reference voltages (u*Na, u*Nb, u*Nc). The reference voltages (u*Na, u*Nb, u*Nc) are formed from a periodic modulation index and from a periodic modulation angle. | 06-11-2009 |
| 363008000 | Current and frequency (e.g., f1-f2-D.C.) | 3 |
| 20090067198 | CONTACTLESS POWER SUPPLY - A system includes a first device configured to receive a first wireless power associated with a first electromagnetic wave from a wireless power source. The first device is configured to convert the first wireless power to a first DC power, store the first DC power, and convert the first DC power stored in the first device to a second wireless power associated with a second electromagnetic wave. The system includes a second device configured to receive the second wireless power from the first device. The second device is configured to convert the second wireless power to a second DC power. The first device can receive the first wireless power at a first location and can convert the first DC power stored in the first device to the second wireless power at a second location different from the first location. | 03-12-2009 |
| 20130314948 | Multi-Phase Grid Interface - Circuit topologies and control methods for a multi-phase grid interface are described. In at least one embodiment, a power conversion circuit is provided that includes an inverter stage, a transformer stage, and a cycloconverter stage. The cycloconverter stage may include one cycloconverter circuit for each of multiple phases associated with a multi-phase grid. In some embodiments, each cycloconverter circuit may include first and second half-bridge circuits coupled back-to-back. | 11-28-2013 |
| 20160094151 | POWER CONVERSION DEVICE - A power conversion device includes a transformer, a first power conversion unit that performs power conversion on a primary side of the transformer to convert DC power to AC power on the primary side of the transformer, and a second power conversion unit that performs power conversion on a secondary side of the transformer to convert AC power on the secondary side of the transformer to single-phase AC power. The second power conversion unit performs the power conversion using bidirectional switching elements, and switches the bidirectional switching elements in the first power conversion unit at a zero voltage by synchronizing with switching actions in the first power conversion unit. Consequently, a loss can be lessened by making the configuration simpler. | 03-31-2016 |
| 363009000 | Combined phase and frequency conversion (i.e., Ph1f1-Ph2f2) | 2 |
| 363010000 | By semiconductor device converter | 2 |
| 20080291698 | Control Method and Controller for Pwm Cyclo-Converter - A control method for a PWM cyclo-converter is provided in which a voltage can be accurately generated even when a voltage command is small. | 11-27-2008 |
| 20140268888 | CONVERTER BRIDGE ARM SUITABLE FOR HIGH-VOLTAGE APPLICATIONS AND APPLICATION SYSTEM THEREOF - A converter bridge arm suitable for high-voltage applications and an application system thereof. The converter bridge arm comprises an energy storage capacitor (C) and a plurality of reverse-conducting switches, and is formed by serial connection of an upper telescopic arm (Bu), a lower telescopic arm (Bd) and an inductor (Lb). The upper telescopic arm (Bu) and the lower telescopic arm (Bd) are respectively formed by cascading connection of a plurality of units. The converter bridge arm has a simple modular structure, is easy to control, reliable and convenient for starting a high-voltage circuit, has self-balancing voltage sharing effect, and can operate without a transformer and has the characteristic of power bidirectional flow, does not require high-voltage isolation auxiliary power supply, has the advantages of suitability for high-frequency operation and electromagnetic compatibility, and can remarkably reduce the dimension of a filter. | 09-18-2014 |
