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

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.