Featured patents

Modular Multilevel Power Electronic Converter Having Selectively Definable Circulation Path
US 08848401 B2, Sept. 30, 2014, For transfer of power via a high voltage D.C. link, David Reginald Trainer et al. / Alstom Technology Ltd. (Baden, CH)
A power electronic converter, for use in high voltage direct current power…

Soft-Start Circuit
US 08830706 B2, Sept. 9, 2014, With starting arrangement, Takamune Suzuki et al. / Sanken Electric Co., Ltd. (Saitama, JP)
A soft-start circuit provided in a control circuit of a switching power supply…

Method and Apparatus for Distributed Power Generation
US 08811049 B2, Aug. 19, 2014, For bridge-type inverter, Martin Fornage / Enphase Energy, Inc. (Petaluma, US)
Apparatus for generating AC power, comprising:…

Methods and Systems for Controlling a Power Converter
US 08780595 B2, July 15, 2014, With discharge control means, Einar Vaughn Larsen / General Electric Company (Schenectady, US)
A controller for controlling a power converter comprising:…

Variable Input Voltage PFC Circuits, Systems and Power Supplies With Phase Shifted Power Rails
US 08681519 B2, March 25, 2014, With transistor control means in the line circuit, Vijay G. Phadke / Astec International Limited (Kwun Tong, Kowloon, HK)
A power factor correction system (PFC) for generating an output voltage…

Fault Protection in Voltage Source Converters With Redundant Switching Cells via Mechanical Switches Being Closed Pyrotechnically
US 08611113 B2, Dec. 17, 2013, Including automatic or integral protection means, Gunnar Asplund / ABB Technology AG (Zurich, CH)
A Voltage Source Converter having at least one phase leg connecting to opposite…

Buck-Boost Rectifier, Refrigeration System Including a Buck-Boost Rectifier, and Method of Providing Power to a Refrigeration Unit via a Buck-Boost Rectifier
US 08605472 B2, Dec. 10, 2013, Transistor, Vladimir Kmoch et al. / Thermo King Corporation (Minneapolis, US)
A buck/boost rectifier connectable to an alternating current power source,…

Accuracy of a Volt-Second Clamp in an Isolated DC-DC Converter
US 08593839 B2, Nov. 26, 2013, Having voltage protection, Charles Edward Hawkes / Linear Technology Corporation (Milpitas, US)
A DC/DC conversion system configured for producing an output voltage in response…

Switching Power Supply Apparatus
US 08456879 B2, June 4, 2013, Bridge type, Eiji Miyake et al. / Panasonic Corporation (Osaka, JP)
A switching power supply apparatus for converting a first output having a DC…

Switching Power Supply Device Having a Constant Voltage Characteristic and Semiconductor Device
US 08451635 B2, May 28, 2013, Having feedback winding inductively coupled to inverter inductive device, Kazuhiro Murata / Panasonic Corporation (Osaka, JP)
A switching power supply device comprising:…

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