Patent ID: 8330293

Claim:
A charging system connectable to a power grid having a monitoring device, wherein the monitoring device monitors the power delivered to a plurality of loads and determines a power factor and a power factor correction value associated with the loads, wherein the power factor correction value indicates the difference between the power factor and unity, comprising: an electrical device; a charger in communication with the electrical device for supplying power to the electrical device, the charger supplying an output voltage to the electrical device; a charging controller in communication with the charger and the electrical device, wherein the charging controller calculates a target output signal for charging the electrical device; a power factor correction circuit selectively connectable to the power grid and configured to communicate an input voltage and an input current to the charger from the power grid, and wherein the power factor correction circuit is configured to communicate the input current from the electrical device to the power grid; a communication device configured to receive a data signal from the monitoring device wherein the data signal is indicative of the power factor correction value associated with the plurality of loads monitored by the monitoring device; and a controller in communication with the power correction factor circuit, the communication device, the charging controller, and the charger, wherein the controller includes: a first control logic for monitoring the input voltage, the input current, the output voltage, the target output signal, and the data signal indicative of the power factor correction value from the communication device; a second control logic for calculating a target input current that adjusts the power factor to unity, wherein the target input current is dependent on the input voltage and the power factor correction value; a third control logic for calculating a controller command signal that is communicated to the power factor correction circuit, wherein the controller command signal is based on the target input current, the output voltage and the target output signal; and a fourth control logic for commanding the power factor correction circuit to change the input current to a value that causes the power factor to change to about unity.