What Causes the Rear Wheels of a Car Not to Turn?

[OAdelyn]

The specific reasons for the rear wheels of a car not turning include controller damage and inter-turn short circuits. The details are as follows: Controller Damage: When the controller (three-phase AC inverter) suddenly breaks down due to overheating, it can also cause a short circuit between the output three-phase power components. In this case, the motor operates in a short-circuit generation state (working in an energy-consuming braking state), making it very difficult to push the car. Inter-turn Short Circuit: If there is a sudden inter-turn short circuit inside the motor, the resistance during pushing will also be very high. In such a situation, the only solution is to tow the car to a repair shop for motor servicing. The brushless motor of an electric vehicle is a permanent magnet three-phase AC motor, which operates in a power generation state when being pushed. If there is a short circuit in the output, the vehicle cannot be pushed.