Circuit/System Description

Each drive motor generator is controlled by a motor control module (MCM). The drive motor generators utilize 3 phase alternating current (ac) electricity. The drive motor generator stator coil is comprised of three phase circuits. The phase circuits are identified as phase U, phase V and phase W. The U-V-W phase circuits are connected in a wye configuration. This means each phase is connected at a single, central point. The MCM monitors a current sensor connected to each drive motor generator phase.