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https://drivepatents.com/patents/972976 · 2 Jul 2014
An electronic device and a control method thereof includes an infrared module which receives an infrared control signal having a predetermined section-specific waveform from an infrared transmitter, a switching unit which turns on/off the infrared module, ...
https://drivepatents.com/patents/976629 · 9 Apr 2014
A VAR compensator includes a voltage detection circuit configured to detect voltage fluctuations in a power distribution system and stabilizes voltage of the power distribution system by controlling reactive power to be injected into the power distribution...
https://drivepatents.com/patents/976302 · 9 Apr 2014
The compensator (1) has an assembly (24) of capacitors (C1-C3), and two electromechanical contacts (CT1, CT2) connected to the assembly. Each contactor comprises an upstream power terminal (18) and a downstream power terminal (20). Electric current is circ...
https://drivepatents.com/patents/994305 · 2 Jan 2013
It is described a controller (103,303,403), wherein the controller is adapted: to control a transformation ratio of a park transformer (121,321,421) of a wind turbine park (100,300,400) comprising a plurality of wind turbines (105,305,405) connected to a f...
https://drivepatents.com/patents/999780 · 1 Aug 2012
The present invention relates to an on-load tap changer control method for a power transformer (5) in a power system, where the power transformer has a primary side for a connection to a first grid in which electric power is generated (3), and a secondary ...
https://drivepatents.com/patents/1003037 · 25 Apr 2012
The device has a multilevel converter (5) with a common neutral point (7) connected with a neutral point (12) of a filter circuit (8) and a neutral point (15) of a zigzag winding (14) attached to phases (3) of a current system (2). The common point is conn...
https://drivepatents.com/patents/1012681 · 25 May 2011
Systems and methods are provided for reactive power regulation and voltage support for renewable energy plants. In one embodiment, a system and method are provided for coordinating voltage and reactive power output of a plant with one or more requirements ...