Patent ID: 8569994

Claim:
A charging device comprising: a power conditioning device configured to be coupled to a three phase electric power source by an electrical distribution bus, said power conditioning device further configured to receive alternating current (AC) volt-amperes from the three phase electric power source, said power conditioning device having a volt-amperes capacity; and a controller coupled to said power conditioning device, said controller configured to: determine, using a d-q-n transformation, a first amount of the volt-amperes capacity to be converted to direct current (DC) power by said power conditioning device; control said power conditioning device to convert the first amount of the volt-amperes capacity to DC power and to supply the DC power to at least one load when the first amount is greater than zero; determine, using a d-q-n transformation, a second amount of the volt-amperes capacity, wherein the second amount is a difference between the volt-amperes capacity and the first amount; and control said power conditioning device to supply volt-amperes reactive to the electrical distribution bus using at least a portion of the second amount of the volt-amperes capacity when the second amount is greater than zero.