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Frequency based electric vehicle charge controller system and method for implementing demand response and regulation services to power grid using frequency detection

  • US 8,786,249 B2
  • Filed: 08/05/2011
  • Issued: 07/22/2014
  • Est. Priority Date: 08/05/2011
  • Status: Active Grant
First Claim
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1. A method for implementing demand response and regulation services to an associated power grid used with a battery charger for plug-in hybrid electric vehicles (PHEV) and battery electric vehicles (BEV) comprising:

  • providing a frequency sensor for continuously monitoring frequency of the power grid and comparing the monitored frequency to a predefined tolerance band;

    providing a programmable logic controller coupled to said frequency sensor;

    providing a charge controller and a switch coupled to said programmable logic controller and the battery charger;

    said frequency sensor, responsive to the frequency being outside the predefined tolerance band, applying the frequency to said programmable logic controller;

    said programmable logic controller using the applied frequency and identifying a control action; and

    said charge controller and switch receiving respective identified control actions from said programmable logic controller for controlling the battery charger.

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