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BOOST CONVERTER CONTROL HBB-25 < FUNCTION DIAGNOSIS > D E F G H I J K L M A B HBB N O P BOOST CONVERTER CONTROL System Diagram INFOID:0000000004212243 System Description INFOID:0000000004212244 GENERAL • The boost converter boosts DC 244.8 V, the nominal voltage of the boost converter, up to a maximum volt- age of DC 650 V, in accordance with the signals provided by the hybrid vehicle control ECU via the MG ECU. • The inverter converts the alternating current generated by MG1 or MG2 into a direct current. The boost con- verter 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. • 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 • The function of the boost converter to boost DC 244.8 V, the nominal voltage of the boost converter, to max- imum voltage of DC 650 V flows as described below. JMCIA0059GB |