Functional Description - Motor Generator Unit (MGU)
The Motor Generator Unit (MGU), or Motor "A" is a belt driven 3-phase electric motor mounted at the front of the engine (P1f). The P1f motor is used in place of a conventional starter motor to crank the engine during starting. When the engine is running, the mechanical force applied to the shaft of the MGU by the crankshaft induces an AC power delivered to the Power Inverter Module (PIM). The PIM converts the AC power into a DC power for charging the HV battery. The Motor Control Processor (MCP) located inside the PIM controls the operation of the MGU. The MCP monitors the MGU current phase, resolver and internal temperature sensor inputs. The MCP also monitors the MGU for any faults. The MCP communicates this information to the Hybrid Control Processor (HCP), which is also located inside the PIM.