2016 - 2022 Toyota Prius Inverter with Converter

This episode covers the 4th generation Toyota Prius Inverter with Converter. Internal components and service procedures are discussed. The theory of operation and diagnostics will be covered in the next video in this series.

TIMELINE:
0:00 Start
0:50 External features
0:56 Liquid cooling
2:34 Safe removal procedures
3:12 A/C compressor connection
3:40 High voltage DC battery connection
4:30 Contactor functions
5:12 3-Phase cable connections
5:56 HV interlock circuit connection
6:57 Cover removal and seams
9:38 Motor Generator Control Computer
10:19 Electro-static discharge prevention procedures
11:00 Safety precaution - Capacitor discharge at
12:50 Motor Generator Control Computer removal
13:00 Vibration dampening electrical connectors
13:50 Special Service Tool (SST) 09905-00040
16:30 Vibration dampening grounding screws
17:39 Alignment dowels
18:40 Delicate terminal pins and connections
22:00 Cooling pipes
26:35 DC-DC Converter and removal
29:40 DC-DC Converter lift out
30:40 What is serviceable?
31:30 The forbidden zone, what is inside?
33:40 Reactor (Buck/Boost Converter)
34:48 HV battery connections
35:00 14 Insulated Gate Bi-Polar Transistors (IGBTs)
35:41 IGBT to Motor Generator 1 (MG1) and Motor Generator 2 (MG2)
35:48 Smoothing capacitor
35;52 Capacitor drain resistor
36:40 IGBT Cooling
38:11 Conclusion

ABOUT US:
Weber State University (WSU) - Department of Automotive Technology - Ardell Brown Technology Wing - Transmission Lab. This episode covers High Voltage Hybrid Electrical Systems - Specifically the 4th generation Toyota Prius Inverter with Converter. Internal components and service procedures are discussed. The theory of operation and diagnostics will be covered in the next video in this series.

W.S.U is a leader in Hybrid and Electric Vehicle education. This topic is taught as part of our 4-year bachelor's degree program. For information on joining the Weber Automotive program, visit: www.weber.edu/automotive

This video helps cover content related to the 2017 National Automotive Technicians Education Foundation (NATEF) Master Automobile Service Technology (MAST) Standard task 1.A.9 "Identify service precautions related to service of the internal combustion engine of a hybrid vehicle."

This video was created and edited by Professor John D. Kelly at WSU. For a full biography, see www.weber.edu/automotive/J_Kelly.html

QUESTIONS FOR TEACHERS:
1. How is the inverter with converter cooled?
2. What is the safe procedure for disconnecting the electrical circuits from the inverter with converter?
3. What electrical precautions must a service technician take before removing the motor-generator control computer?
4. What is the correct method of releasing the vibration dampening electrical connectors?
5. What can be easily damaged if extreme care is not used when removing the motor-generator control computer?
6. What mistake can lead to coolant getting inside the inverter with converter?
7. Where is the DC-DC converter located?
8. How are the DC-DC converter coolant passages sealed?
9. What inverter with converter parts are serviceable?
10. How many IGBTs are used in this inverter with converter?
11. What is the purpose of the smoothing capacitor?
12. What component discharges the smoothing capacitor?

ADDITIONAL TRAINING FOR YOU
Join us for hybrid and electric vehicle training with two online courses and in a 5-day on-campus boot camp with Professor John D. Kelly. See www.weber.edu/evtraining

DONATE TO OUR DEPARTMENT
Please consider a donation to the Department of Automotive Technology at Weber State University here: advancement.weber.edu/Automotive