Inverter Assembly

Inverter Assembly Components Inverter DC  AC high voltage Variable-voltage System DC201.6V stepped up to max. DC500V DC-DC Converter DC201.6V stepped down to DC 12V A/C Inverter DC  AC to drives the A/C compressor Components: - Inverter: Converts DC to AC (AC to DC) - Variable-voltage system: DC201.6 stepped up to max. DC500V - DC-DC converter: DC201.6 stepped down to DC12V - A/C inverter: Converts DC to AC to drive electric inverter compressor

Variable-voltage System Inverter Assembly Components Inverter Assembly MG1 Inverter Variable-voltage System MG2 HV Battery A/C Inverter DC - DC Converter

Variable-voltage System Inverter Assembly Variable-voltage System DC 201.6V  Max. DC 500V conversion Max. DC 500V   DC 201.6V Inverter Assembly Inverter (IPM) MG1 Variable-voltage System IPM (IGBT) Reactor DC 201.6V DC500V AC500V Variable-voltage System uses IGBT(Insulated Gate Bipolar Transistor = semiconductor switching device) and the reactor to boosts voltage. This device is 20% smaller than the similar device used in THS (’03 model) and has achieved low heat generation and high efficiency. MG2 HV Battery : Discharge : Charge

Inverter Assembly Variable-voltage System System Diagram Power Transistor Boost Converter Inverter IGBT IPM IPM Reactor MG1 HV Battery MG2 IPM: Intelligent Power Module IGBT: Insulated Gate Bipolar Transistor

Variable-voltage System Inverter Assembly Variable-voltage System Voltage boost-up operation Variable-voltage System Inverter 201.6V ON HV Battery

Inverter Assembly Variable-voltage System Voltage boost-up operation HV Battery Inverter Variable-voltage System HV Battery 201.6V ON Inverter 201.6 - 500V OFF

Variable-voltage System Inverter Assembly Variable-voltage System Voltage reduction operation (when charging) Variable-voltage System Inverter ON HV Battery

Inverter Assembly Variable-voltage System Voltage reduction operation (when charging) Variable-voltage System HV Battery Inverter ON Variable-voltage System HV Battery Inverter OFF

Voltage is regulated by IGBT duty Inverter Assembly Variable-voltage System Voltage reduction operation (when charging) Variable-voltage System Inverter ON HV Battery Voltage is regulated by IGBT duty

Inverter Assembly MG Inverter Operation Motor drive U V W V W W V IPM IPM MG ON U V W V W W Inverter creates 3-phase alternating current when the motor drive. (DC to AC) V ON

Inverter Assembly MG Inverter Operation Motor drive V W U V W U U W V IPM IPM MG ON ON V W U V W U U W V ON

Inverter Assembly MG Inverter Operation Motor drive V U V U U W V IPM IPM MG ON V U V U U W V ON

Inverter Assembly MG Inverter Operation Motor drive V W U V W U U W V IPM IPM MG ON V W U V W U U W V ON ON

Inverter Assembly MG Inverter Operation Motor drive U W V Inverter ON IPM IPM MG ON U W V ON

Inverter Assembly Inverter Operation Motor control Motor Torque is controlled by the current value Motor Speed is controlled by the frequency High Speed High Torque Motor Torque is controlled by the current value. Motor Speed is controlled by the frequency. Low Torque Low Speed

Inverter Assembly MG Inverter Operation Regeneration U V W V W W V Regenerative Voltage Inverter to Variable-voltage System IPM IPM MG U V W V W W Inverter creates DC current when the generation. (AC to DC) V

Inverter Assembly MG Inverter Operation Regeneration V W U V W U U W V Regenerative Voltage Inverter to Variable-voltage System IPM IPM MG V W U V W U U W V

Inverter Assembly MG Inverter Operation Regeneration V U V U U W V Regenerative Voltage Inverter to Variable-voltage System IPM IPM MG V U V U U W V

Inverter Assembly MG Inverter Operation Regeneration V W U V W U U W V Regenerative Voltage Inverter to Variable-voltage System IPM IPM MG V W U V W U U W V

Inverter Assembly MG Inverter Operation Regeneration W U W U U W V Regenerative Voltage Inverter to Variable-voltage System IPM IPM MG W U W U U W V

Variable-voltage System Inverter Assembly DC – DC Converter DC201V  DC 12V Inverter Assembly HV Battery MG1 Variable-voltage System Inverter MG2 DC – DC Converter DC201.6V to DC12V conversion to charge the auxiliary battery. DC  AC AC 201.6V  AC 12V AC  DC DC 12V DC 201.6V Auxiliary Battery

Inverter Assembly DC – DC Converter Operation DC – DC Converter DC 201.6V DC 12V Rectifier Diode Smoothing Circuit DC  AC Transformer Auxiliary Battery

Inverter Assembly A/C inverter DC201.6V  AC201.6V conversion A/C ECU HV ECU DC 201.6V  AC 201.6V Target Compressor Speed AC 201.6V DC 201.6V A/C Inverter DC 201.6V to AC 201.6V conversion to supplies the AC voltage to electric inverter compressor. HV Battery Electric Inverter Compressor Inverter Assembly

Inverter Assembly Cooling System Cooling circuit is used for inverter assembly Separate cooling system from engine Reservoir Pump MG1 / 2 Radiator Inverter Reservoir Tank Coolant Type: SLLC Coolant maintenance schedule is same as engine coolant. Electric Water Pump Radiator