System Description: Features: General

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The Hybrid Vehicle Control System offers the following representative features:
- Uses a variable-voltage system in which a boost converter boosts the operating voltage of the system to a maximum voltage of DC 650 V and an inverter converts the direct current into an alternating current, which supplies the system voltage to MG1 and MG2.
- A motor speed reduction planetary gear unit, whose purpose is to reduce motor speed, is used to enable the high-speed, high-output MG2 to adapt optimally to the power split planetary gear unit in the hybrid transaxle.
The Hybrid Vehicle Control System consists primarily of the following components:

Fig 1: Hybrid Vehicle Control System Diagram
Courtesy of NISSAN MOTOR CO., U.S.A.