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Selectively lowering resistance of a constantly used portion of motor windings in an electric motor

  • US 8,994,307 B2
  • Filed: 03/01/2013
  • Issued: 03/31/2015
  • Est. Priority Date: 01/16/2009
  • Status: Active Grant
First Claim
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1. A method for switching motor windings within a motor using a processor device, the method comprising:

  • optimizing a dynamic reconfiguration-switching of a plurality of motor windings between a plurality of winding-configurations by selectively lowering resistance of a constantly used portion of one of the plurality of motor windings for trading off acceleration in favor of higher velocity upon detecting the motor is at an optimal angular-velocity for switching to an optimal lower torque constant and voltage constant thereby preventing a total back electromotive force (BE MF) from inhibiting further acceleration to a higher angular-velocity; and

    using m simultaneous-linear equations, having m number of unknown variables, for determining a plurality of voltage constants, the optimal time, and the optimal angular-velocity for performing the dynamic reconfiguration-switching between each of the plurality of winding-configurations, wherein a number of the m simultaneous-linear equations increases, starting with one equation for a three-winding- configuration of the motor and adding an additional simultaneous equation for each additional one of the plurality of winding-configurations, and a number of the plurality of voltage constants equal to the correlating one of the plurality of winding-configurations.

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