The present invention provides an accessory drive system for a hybrid
vehicle. The accessory drive system includes an inverter operatively
connected to a direct current battery. The inverter is configured to
convert the direct current from the battery into three-phase alternating
current. The accessory drive system also includes a transmission having a
first motor/generator operable to drive the hybrid vehicle. The first
motor/generator is a Y-connected three phase motor/generator that defines
a first neutral point. A second motor/generator is connected to an
accessory and to the first neutral point. Output from the battery is
transferable through the first neutral point to the second
motor/generator such that the accessory is driven at a selectable rate.