Toyota Camry Hybrid AHV40 Manual page 24

TH-24
2. Inverter Assembly
General
D The inverter converts the high-voltage direct current of the HV battery into three-phase alternating
current for driving MG1 and MG2.
D The activation of the power transistors is controlled by the THS ECU, via the MG ECU. In addition, the
inverter transmits information that is needed for current control, such as the output amperage or voltage,
to the THS ECU via the MG ECU.
D Together with MG1 and MG2, the inverter is cooled by the dedicated radiator of the coolant system that
is separate from that of the engine.
D In the event of a collision involving the vehicle, the circuit breaker sensor, which is installed on the
inverter, detects a collision signal in order to stop the system. For details, refer to During Collision
Control on page TH-54.
D A boost converter is used in the inverter assembly, in order to boost the nominal voltage output by the
HV battery from DC 244.8 V to maximum voltage of DC 650 V. After the voltage is boosted, the inverter
converts the direct current into an alternating current.
D Each of the bridge circuits for MG1 and MG2 contains 6 power transistors. In addition, a signal
processor/protective function processor has been integrated into a compact IPM (Intelligent Power
Module) for driving the vehicle.
For details on the multiple functions of the inverter, refer to Inverter Assembly Control on page TH-49.
Inverter Assembly
(Included Inverter,
Boost Convert
and MG ECU)
THS II (TOYOTA HYBRID SYSTEM II)
Circuit Breaker
Sensor (for Front)
02HTH23Y