Device for controlling a double-fed asynchronous machine
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United States of America Patent
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Feb 18, 2014
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app pub date -
May 19, 2011
filing date -
Nov 19, 2008
priority date (Note) -
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Abstract
The invention relates to a device and method for controlling a double-fed asynchronous machine (4), preferably for a power plant, in particular for a wind or water power plant. The device includes an indirect converter (6) which is connected on the rotor side to the double-fed asynchronous machine (4). The indirect converter (6) includes a rotor-side converter (20) and a line-side converter (24). At least one control element (8) is provided for controlling the indirect converter (6). At least one software-based and/or hardware-based damping element (40, 46, 48, 120) is provided which has changeable damping characteristics.
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