Quotables
"It is my heart-warmed and world-embracing Christmas hope and aspiration that all of us, the high, the low, the rich, the poor, the admired, the despised, the loved, the hated, the civilized, the savage (every man and brother of us all throughout the whole earth), may eventually be gathered together in a heaven of everlasting rest and peace and bliss, except the inventor of the telephone. "
Mark Twain ; Christmas greetings, 1890
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| Number | Title | Issue Date |
| 8116103 | Device for feeding electric energy into a power grid and DC converter for such a device The device is for feeding electricity into a power grid (8) with a DC generator (1), a DC converter (2) and an inverter (3), and particularly to a DC converter (2) suited for the device. The DC converter (2) comprises a chok... | 02/14/2012 |
| 8107261 | Powering unit with full bridge and wide adjusting range circuit There is described a powering unit comprising at least one transformer, at least one full bridge circuit via which a primary winding of the transformer is connected to a direct current voltage input, a secondary winding for triggering an output circuit with an outpu... | 01/31/2012 |
| 8098500 | Phase shift full bridge converter with reduced current stress A phase shift full bridge converter with a reduced current stress includes: a switching unit that switches an input voltage; a transformer that includes a first capacitor serially connected to, and having a primary side and a secondary side; an auxiliary circuit uni... | 01/17/2012 |
| 8089780 | Semiconductor switch and power conversion system provided with semiconductor switch A semiconductor switch is provided with a main element having reverse conductivity and serving as a voltage-driven switching element having a high withstand voltage, an auxiliary element serving as a voltage-driven switching element having a withstand voltage lower ... | 01/03/2012 |
| 8085557 | Bidirectional DC/AC inverter A bidirectional DC-AC inverter is disclosed. The DC-AC inverter includes an H bridge circuit, a connecting portion connected to the H bridge circuit, a smoothing filter that connects the connecting portion to the H bridge circuit, and a control section. The H bridge... | 12/27/2011 |
| 8085556 | Dynamic converter topology Methods and apparatus of dynamic topology power converters are provided. One method includes monitoring at least one variable of the power converter and based on the at least one monitored variable, using a converter topology selected between at least a full-bridge ... | 12/27/2011 |
| 8081494 | Fully integrated multi-phase grid-tie inverter In a grid-tie inverter, the DC input is phase and pulse-width modulated to define multiple phase shifted voltage pulses with the width of each pulse being modulated according to the grid AC amplitude for the corresponding portion of the AC phase. ... | 12/20/2011 |
| 8081493 | Electronic power conditioner with integrated magnetics A power supply including a main stage converter having a bridge circuit having input switches for receiving input voltage and providing an output, a main transformer and at least one output choke having an integrated magnetic structure coupled to the output of the b... | 12/20/2011 |
| 8068352 | Power inverter control for grid-tie transition A control system for a power inverter is disclosed. The power inverter may be configured to supply power to a grid. The control system may include a plurality of output voltage sensors and a plurality of output current sensors configured to measure output line volta... | 11/29/2011 |
| 8064227 | Rectifying circuit for a multiphase electric machine Cathode-anode voltage across free-wheeling diodes in an active rectifier is used in the determination of switching points when the free-wheeling diode is forward biased. Hysteretic switching is accomplished through the selection of conductive and non-conductive swit... | 11/22/2011 |
| 8054651 | Simple and effective self regulating inductive power transfer system An inductive power transfer system for coupling a power source to a load across an air gap is provided, including a primary unit and a secondary unit separable from the primary unit and arranged to receive power inductively from the primary unit when placed proximat... | 11/08/2011 |
| 8040695 | Method for portioning output current of a DC-DC converter At least some aspects of the invention are directed to methods and apparatus for controlling an uninterruptible power supply and subsystems of a UPS. A first aspect of the invention is directed to a method of controlling a DC-DC converter having a predetermined maxi... | 10/18/2011 |
| 8035996 | Asymmetric zero-voltage switching full-bridge power converters Disclosed are full-bridge power converters providing DC output power at increased conversion efficiencies, and methods of operating full-bridge power converters providing DC output power at increased conversion efficiencies. In disclosed embodiments, the switches of... | 10/11/2011 |
| 8035995 | ACDC converter This invention relates to an ACDC converter (1) comprising a converter input (3) and a converter output (5), a pre-regulation stage (7) and a DC transformer stage (9) comprising a transformer input stage (11) and a transform... | 10/11/2011 |
| 8023288 | Inverter for grounded direct current source, more specifically for a photovoltaic generator An inverter (1) for a grounded direct voltage source, in particular for a photovoltaic generator (2), a battery or a fuel cell, for converting the direct voltage into an alternative voltage with a DC-DC converter (3) and a pulse inverter that is... | 09/20/2011 |
| 8014173 | Resonant converter for synchronous rectification control A resonant converter for improving synchronous rectification control is provided. The resonant converter obtains an input power, and through a switch unit, the period of the input power to be transmitted to a resonant circuit can be modified. The resonant converter ... | 09/06/2011 |
| 8009443 | DC/DC converter and AC/DC converter A DC/DC converter (1) having a plurality n of two-pole inverters (2a, 2b) connected in parallel or in series, n transformers (Ta, Tb) and n two-pole rectifiers (3a, 3b) connected in... | 08/30/2011 |
| 7986535 | Methods and apparatus for a cascade converter using series resonant cells with zero voltage switching A method of providing power to a load is provided. A first series resonant converter is provided. A second SRC is operably coupled to the first SRC in a cascade connected arrangement. First and second zero voltage switching (ZVS)-assistance networks are operably cou... | 07/26/2011 |
| 7978483 | Power conversion components, systems and methods Components, systems and methods for generating variable frequency AC voltage from a DC power supply are described. The components include a full-bridge (FB) parallel load resonant (PLR) converter which operates in discontinuous conduction mode. The PLR converter inc... | 07/12/2011 |
| 7974106 | Ripple cancellation Systems, methods and devices for power generation systems are described. In particular, embodiments of the invention relate to the architecture of power conditioning systems for use with fuel cells and methods used therein. More particularly, embodiments of the pres... | 07/05/2011 |
| 7969752 | Switching power supply device using current sharing transformer In accordance with the present invention, the switching power supply device using a current sharing transformer includes an inverter switching unit for switching an input voltage; a set of share inductors connected to the inverter switching unit for distributing a c... | 06/28/2011 |
| 7948775 | Duty-cycle-controlled half-bridge resonant converter A half-bridge resonant converter including a half-bridge switching circuit, a resonant circuit and a rectifier circuit is provided. The half-bridge switching circuit is controlled by two control signals for alternatively coupling two terminals of a DC power source t... | 05/24/2011 |
| 7948776 | Zero voltage switching high-frequency inverter There is provided a zero-voltage switching high-frequency inverter capable of supplying a current of a large amplitude operation to a load, while suppressing a main switch current. The zero-voltage switching high-frequency inverter according to the present invention... | 05/24/2011 |
| 7948774 | Resonant DC/DC converter with zero current switching A resonant DC/DC converter for supplying an output power comprises a switching device (18) for supplying a switched voltage (UWR) to a resonant circuit (20) having a transformer (T). The switched voltage (UWR) is derived from an intermediate circuit vo... | 05/24/2011 |
| 7944714 | Zero voltage switching high-frequency inverter There is provided a zero-voltage switching high-frequency inverter capable of supplying a current of a large amplitude operation to a load, while suppressing a main switch current. The zero-voltage switching high-frequency inverter according to the present invention... | 05/17/2011 |
| 7920391 | Double-clamped ZVS buck-boost power converter A transformer-coupled buck-boost DC-DC power converter is disclosed. An active clamp circuit is provided to form a resonant circuit with the transformer to control the slew rate of the secondary current and allow the secondary switch to be turned ON at conditions of... | 04/05/2011 |
| 7920390 | DC-AC converter, controller IC therefor, and electronic apparatus utilizing such DC-AC converter An inverter has a semiconductor switch circuit provided in the primary circuit of a transformer. The switch circuit is controlled by a PWM circuit. The switch circuit is operated on the basis of an intermittent-operation signal having an ON state and OFF state to: s... | 04/05/2011 |
| 7911810 | Bi-directional DC-DC converter and method for controlling the same A bi-directional DC-DC converter has a transformer for connecting a voltage type full bridge circuit connected to a first power source and a current type switching circuit connected to a second power source. A voltage clamping circuit constructed by switching elemen... | 03/22/2011 |
| 7903434 | Power switch grouping A power modulator comprises a plurality of switched pulse generator sections (22), a power supply arrangement (10), and a transformer arrangement (30). A switch control (24) is connected to said plurality of switched pulse generator secti... | 03/08/2011 |
| 7889518 | Half-bridge power converter system and method of operation In one embodiment, a power converter generates an output voltage by modulating an input voltage according to operations of a first switch and a second switch connected in a half-bridge arrangement. The power converter includes a switch driver circuit for controlling... | 02/15/2011 |
| 7869226 | Achieving ZVS in a two quadrant converter using a simplified auxiliary circuit A zero voltage switch half bridge converter comprises a first and second diode series diodes, parallel with a voltage source. A first terminal of an inductor is joined to the diode junction. A first semiconductor auxiliary switch connected in series between the volt... | 01/11/2011 |
| 7864546 | DC-DC converter with communication across an isolation pathway A power converter comprises a direct current (DC)-DC converter configured to receive an input voltage in a primary domain, a transformer coupled to and driven by the DC-DC converter and supplying an output voltage in a secondary domain, and a transmission path confi... | 01/04/2011 |
| 7859861 | Insulated power transfer device An insulated transfer device with particular topology, comprising on the primary, a switched-mode voltage step-up circuit, with a step-up inductance (LB) and an active buffer stage (DT, MT, CT) supplying a peak voltage gre... | 12/28/2010 |
| 7852639 | Low-loss rectifier with optically coupled gate shunting A rectifier circuit (400) is provided. The rectifier circuit is comprised of a plurality of field effect transistors (102, 104, 106, 108) coupled together to define a rectifier circuit. The rectifier circuit is also comprised of a control circuit (6... | 12/14/2010 |
| 7848118 | Bi-directional DC-DC converter and method for controlling the same A bi-directional DC-DC converter has a transformer for connecting a voltage type full bridge circuit connected to a first power source and a current type switching circuit connected to a second power source. A voltage clamping circuit constructed by switching elemen... | 12/07/2010 |
| 7843707 | Non-contact power supply having built-in coupling detection device and coupling detection method thereof The configurations of a non-contact power supply and a coupling detection method thereof are provided. The proposed non-contact power supply includes a detachable transformer including a primary side, a current sensor coupled to the primary side and sensing a primar... | 11/30/2010 |
| 7835161 | DC-AC converter and method of supplying AC power A dc-ac converter capable of supplying a finely regulated ac drive voltage to a load is provided. For this purpose, the converter includes, in a primary winding of a transformer, a full-bridge or half-bridge type semiconductor switch circuit whose switch can be cont... | 11/16/2010 |
| 7826235 | Zero voltage switching high-frequency inverter There is provided a zero-voltage switching high-frequency inverter capable of supplying a current of a large amplitude operation to a load, while suppressing a main switch current. The zero-voltage switching high-frequency inverter according to the present invention... | 11/02/2010 |
| 7821797 | Isolated DC-DC converter A switching circuit arranged to switch the input of an input power supply is connected to a primary winding of a transformer at a primary side of the transformer. A digital control circuit including a switching controller arranged to output control pulses to the swi... | 10/26/2010 |
| 7813148 | Power converter having flux bias regulation method Provided is a flux regulation method for use in a power converter, wherein the method is carried out by a flux bias controller. The flux bias controller includes a current detector which is configured to detect the primary current of the transformer of the power con... | 10/12/2010 |
