1、Basic Structure of the Motor Controller
2、Drive motor controller installation and removal method
3、Common faults of the drive motor system
The motor controller is a power conversion device that, based on torque, speed, and direction requests sent by the VCU, controls its own inverter circuit to output three-wire AC power to meet the required output, ensuring the motor's response meets the required requirements. It primarily includes a power module, electrolytic capacitor, current sensor, control board, driver board, connecting busbars, and housing.
1- Low-voltage connector port
2- Water outlet
3- Water inlet
4- Positive and negative power supply cables
5- Motor three-phase cables. 4-in-1 controller low voltage signal
1 Flip up the cab
2 After the vehicle is powered off, remove the negative terminal of the low-voltage battery
3 Unplug the battery MSD
4 Remove the 4-in-1 controller grounding wire 5 Remove the 4-in-1 controller inlet and outlet pipes and drain the coolant
6 Remove the 4-in-1 controller low-voltage wire harness plug-in
7 Remove the 4-in-1 controller high-voltage wire harness plug-in
8 Remove the controller and the fixing bracket bolts
9 Move the controller out in the direction of the arrow