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Arrangement and method for controlling frequency converter modules

  • US 8,581,528 B2
  • Filed: 04/12/2011
  • Issued: 11/12/2013
  • Est. Priority Date: 04/15/2010
  • Status: Active Grant
First Claim
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1. An arrangement for controlling frequency converter modules of an electric drive, wherein the arrangement comprises:

  • two or more control means;

    two or more frequency converter modules;

    two or more loads;

    switching means for connecting the frequency converter modules to different loads of the arrangement, respectively;

    selection means for selecting active control means;

    first branching means and second branching means, the first branching means being configured to establish connections between each control means and one or more second branching means, and the second branching means being configured to establish connections between each frequency converter module and one or more first branching means in such a manner that the second branching means comprise at least one branching device arranged to establish a connection between a frequency converter module and two or more first branching means.

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