DC/AC converter with dampened LCL filter distortions

Details DC/AC converter with dampened LCL filter distortions DC/AC converter with dampened LCL filter distortions

2007-07-24

2008-11-11

Sterrett, Jeffrey L (Department: 2838)

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

C363S098000

Reexamination Certificate

active

07450405

ABSTRACT:
A method is disclosed for operating a converter circuit, with the converter circuit having a converter unit with a plurality of drivable power semiconductor switches and an LCL filter connected to each phase connection of the converter unit, in which the drivable power semiconductor switches are driven by means of a drive signal which is formed from a hysteresis power value, from a hysteresis wattless-component value and from a selected flux sector. An apparatus for carrying out the method is also disclosed.

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M. Lindgren et al., “Control of a voltage-source converter connected to the grid through an LCL-filter-application to active filtering”, vol. 1, May 17, 1998, pp. 229-235.
E.J. Bueno et al., “Current control of voltage source converters connectred to the grid through an LCL-filter”, vol. 1, Jun. 20, 2004, pp. 68-73.
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PCT/IB/326 and PCT/IB/338 the references identified in these documents were filed in the first Information Disclosure Statement filed Jul. 24, 2007.

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