Altima L4-2.5L (QR25DE) Hybrid (2007)
Voltage Converter: Description and Operation
BOOST CONVERTER CONTROL
System Diagram
System Description
GENERAL
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The boost converter boosts DC 244.8 V, the nominal voltage of the boost converter, up to a maximum voltage of DC 650 V, in accordance with
the signals provided by the hybrid vehicle control ECU via the MG ECU.
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The inverter converts the alternating current generated by MG1 or MG2 into a direct current. The boost converter drops the maximum voltage of
DC 650 V to DC 244.8 V, the nominal voltage of the boost converter, in accordance with the signals provided by the hybrid vehicle control ECU
via the MG ECU.
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The boost converter consists of a boost IPM (Intelligent Power Module) with built-in IGBTs (Insulated Gate Bipolar Transistors) that effect
switching control, and a reactor that stores (and charges) electrical power.
VOLTAGE BOOST CONVERSION FUNCTION
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The function of the boost converter to boost DC 244.8 V, the nominal voltage of the boost converter, to maximum voltage of DC 650 V flows as
described.