A charge transfer system , comprising: a plug-in power supply directly and electrically connected between at least one of a first plurality of switch legs (A, B, C) of a first inverter and at least one of a second plurality of switch legs (A', B', C') of a second inverter , wherein a switch leg is a pair of serially connected switching elements of an inverter; and a controller operatively coupled to the first inverter and the second inverter , wherein the controller is configured to selectively modulate the plurality of switch legs (A, B, C) of the first inverter that are not connected to the plug-in power supply and of the plurality of switch legs (A', B', C') of the second inverter that are not connected to the plug-in power supply to reduce common mode noise between the plug-in power supply and an on-board vehicle power supply , and wherein, during a charging operation of the on-board vehicle power supply , the controller is configured to selectively modulate switch legs such that electric current flow alternates between at least one of a first plurality of stator windings (L1, L2, L3) of a first motor to charge the on-board vehicle power supply during a first plug-in supply voltage polarity state and at least one of a second plurality of stator windings (L4, L5, L6) of a second motor to charge the on-board vehicle power supply during a second plug-in supply voltage polarity state, and wherein, during a discharging operation of the on-board vehicle power supply , the controller is configured to selectively modulate at least one of the plurality of switch legs (A, B, C) of the first inverter and the plurality of switch legs (A', B', C') of the second inverter such that electric current flows to the plug-in supply through the at least one of the first plurality of stator windings (L1, L2, L3) of the first motor or the at least one of the second plurality of stator windings L4, L5, L6) of the second motor to discharge the on-board vehicle power supply . a plug-in power supply directly and electrically connected between at least one of a first plurality of switch legs (A, B, C) of a first inverter and at least one of a second plurality of switch legs (A', B', C') of a second inverter , wherein a switch leg is a pair of serially connected switching elements of an inverter; and a controller operatively coupled to the first inverter and the second inverter , wherein the controller is configured to selectively modulate the plurality of switch legs (A, B, C) of the first inverter that are not connected to the plug-in power supply and of the plurality of switch legs (A', B', C') of the second inverter that are not connected to the plug-in power supply to reduce common mode noise between the plug-in power supply and an on-board vehicle power supply , and wherein, during a charging operation of the on-board vehicle power supply , the controller is configured to selectively modulate switch legs such that electric current flow alternates between at least one of a first plurality of stator windings (L1, L2, L3) of a first motor to charge the on-board vehicle power supply during a first plug-in supply voltage polarity state and at least one of a second plurality of stator windings (L4, L5, L6) of a second motor to charge the on-board vehicle power supply during a second plug-in supply voltage polarity state, and wherein, during a discharging operation of the on-board vehicle power supply , the controller is configured to selectively modulate at least one of the plurality of switch legs (A, B, C) of the first inverter and the plurality of switch legs (A', B', C') of the second inverter such that electric current flows to the plug-in supply through the at least one of the first plurality of stator windings (L1, L2, L3) of the first motor or the at least one of the second plurality of stator windings L4, L5, L6) of the second motor to discharge the on-board vehicle power supply . <EOS>