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Electromechanical energy conversion systems

  • US 7,960,948 B2
  • Filed: 03/29/2010
  • Issued: 06/14/2011
  • Est. Priority Date: 10/27/2006
  • Status: Active Grant
First Claim
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1. A system comprising:

  • an electric machine that comprises;

    a stator with a plurality of winding locations distributed substantially evenly across a surface of the stator; and

    a plurality of conductors defining a plurality of coils arranged substantially symmetrically among the plurality of winding locations and connected to form a number (N) of sets of multiple (M) phase windings, wherein for each of the windings, each of the coils spans a single pole to form a full pitch winding, and wherein each of the N sets of windings are offset with respect to each other so as to substantially reduce a harmonic content of a magnetic flux within a first frequency range during operation; and

    a plurality of switch matrices configured to provide electrical power to the N sets of windings during operation.

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