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| Application No. | Application Title | Issue Date |
| 20110075454 | POWER SUPPLY A power supply includes two or more input waveforms being shaped or selected so that after being separately level-shifted and rectified, their additive combination results in a DC output waveform with substantially no ripple. The power supply may comprise a waveform gen... | 03/31/2011 |
| 20100284205 | Voltage Transforming Apparatus A voltage transforming apparatus includes a first high voltage side coil, a first low voltage side coil magnetically coupled to the first high voltage side coil, a second low voltage side coil magnetically coupled to the first high voltage side coil, and a first switch ... | 11/11/2010 |
| 20090273956 | MODULAR CONVERTER FOR CONVERTING THE ELECTRIC POWER PRODUCED BY AEROGENERATORS, AND WIND-POWER PLANT THAT USES SAID CONVERTER A modular converter 30 for converting the electric power produced by aerogenerators, designed to be used within a wind-power plant, which is equipped with: input terminals 30a designed to be connected to an electric-power generator 3 of a sin... | 11/05/2009 |
| 20080304296 | DC-DC and DC-AC power conversion system A galvanic isolated DC-DC and DC-AC power conversion system is coupled to a plurality of DC sources which are derived from a combination of a plurality of single-phase and three-phase AC-DC converters. The DC-DC and DC-AC power conversion system in one embodiment is con... | 12/11/2008 |
| 20080298100 | CONTACTLESS POWER RECEIVING UNIT AND ELECTRONIC DEVICE EMPLOYING THE SAME Provided is a contactless power receiving unit which has a simple configuration, and which is capable of generating constant induced electromotive force regardless of the orientation of a power receiving coil. Multiple power receiving coils are arranged to form certain ... | 12/04/2008 |
| 20080205100 | SEMICONDUCTOR CIRCUIT A synchronous rectifying drive type semiconductor circuit wherein voltages between drains and sources of power switching elements are detected, temporarily held and compared with a reference voltage. First control signals are generated for turning on the power switching... | 08/28/2008 |
| 20080205101 | Multi-Pulse Rectifier for AC Drive Systems Having Separate DC Bus Per Output Phase An 18n-pulse rectifier for AC drive systems having a separate DC bus for each output phase is described, where n=any positive integer. The rectifier uses three separate phase rectifiers, one for each output phase of a transformer, each comprised of n six-pulse diode bri... | 08/28/2008 |
| 20080198637 | Multilevel AC/DC converter for traction applications The present disclosure is concerned with a power supply system for railway traction applications including a multilevel AC/DC converter. The converter comprises a plurality of series-connected single-stage cycloconverters or direct AC frequency converters connected betw... | 08/21/2008 |
| 20080197706 | 3-Phase High Power UPS A 3-phase uninterruptible power supply (UPS) including first, second, and third AC/DC converters, a DC/DC converter, and at least one DC/AC converter coupled to multiple electrical buses. The first, second, and third AC/DC converters each being configured to receive AC ... | 08/21/2008 |
| 20080186746 | Power Supply System A power supply system (1) comprises a power brick (3) which comprises a power converter (30) arranged in a first housing (2). The power converter (30) converts an AC-mains input voltage (VM) into an AC-output voltage (VO) which has a h... | 08/07/2008 |
| 20080175028 | MULTILEVEL CONVERTER ARRANGEMENT AND USE THEREOF The present disclosure is concerned with the provision of the necessary power to the gate-drives controlling the semiconductor devices of a multilevel converter used in railway traction applications. A power loop with a power-loop emitter and a power-loop receptor locat... | 07/24/2008 |
| 20080165553 | Eighteen pulse rectification scheme for use with variable frequency drives An AC/DC converter system comprises an input circuit for connection to a three phase AC source. An isolation transformer comprises a set of primary windings and first and second sets of secondary windings magnetically coupled to the set of primary windings. The first an... | 07/10/2008 |
| 20080158921 | Multilevel converter and method of converting a supply voltage The present disclosure is concerned with a multilevel converter including a transformer arrangement comprising at least two transformer units, each with primary and secondary windings and a transformer core structure. The latter are merged into one shared transformer co... | 07/03/2008 |
| 20080084167 | Power Converter for Led Large Area Light Source Lamp Power converter for receiving an input current at an input voltage and for providing an output current at an output voltage. The power converter comprises a transformer (133) having a primary (136) and at least one secondary (138) side, wherein the ... | 04/10/2008 |
| 20070296363 | Rectifier and System for Controlling the Speed of an Electric Motor The invention concerns a reversible current rectifier, for connection to part of a polyphase network and to a continuous bus comprising a plurality of rectifier cells each rectifier cell including a rectifying device and a on-way electronic switch connected in anti-para... | 12/27/2007 |
| 20070121354 | Power converters The present invention provides_a power converter that can be used to interface a generator (4) that provides variable voltage at variable frequency to a supply network operating at nominally fixed voltage and nominally fixed frequency and including features that ... | 05/31/2007 |
| 20070025127 | Switched current power converter with reduced power losses during low load conditions A switched current power converter includes an input power source, an output terminal, and a plurality of current stages. Each of the current stages includes a converter coupled to the input power source for providing a current and a switch circuit that selectively coup... | 02/01/2007 |
| 20060083034 | Circuit for Reduction of Voltage Stress between Windings The present invention is a high voltage power converter having primary and secondary winding sets in a single planar layer stacked in increasing voltage and arranged without the use of a conductor. Substantially no AC stress exists between winding sets. ... | 04/20/2006 |
| 20060083035 | Three Phase Rectifier Circuit With Virtual Neutral A rectifier circuit powers three power conversion modules using a three phase AC input without a neutral connection. First, second and third bridge rectifiers are connected to first, second and third phases of the three phase AC input and produce first, second and third... | 04/20/2006 |
| 20050135126 | 12-Pulse converter including a filter choke incorporated in the rectifier The invention provides a 12-pulse converter comprising an autotransformer having a primary winding connected in a delta configuration and two secondary windings connected in star configurations, the two secondary windings being connected to two rectifier bridges that ar... | 06/23/2005 |
