Why is the rear wheel of the car not turning?

[SanDiana]

The specific reasons for the rear wheel not turning are controller damage, inter-turn short circuit, etc. The details are as follows: Controller damage: Because the controller (three-phase AC inverter) suddenly breaks down due to high heat, it also causes a short circuit between the components of the output three-phase power supply. When pushing, the motor is in a short-circuit power generation state (working in the energy-consuming braking state), making it very difficult to push. Inter-turn short circuit: It is caused by a sudden inter-turn short circuit inside the motor. At this time, the pushing resistance will also be very large, and you can only find a vehicle to tow it to the repair shop for motor repair. The brushless motor of the electric vehicle is a permanent magnet three-phase AC motor, which will be in a power generation state when pushing. If there is a short circuit in the output, it cannot be pushed.