What are the reasons for a car generator not generating electricity?

[DiTimothy]

The reasons for a car generator not generating electricity: 1. The residual magnetism of the generator core disappears or is too weak. Newly installed units may lose residual magnetism due to long-distance transportation vibration or prolonged storage; 2. Incorrect wiring of the excitation circuit. During generator maintenance, careless reversal of the excitation winding polarity may cause the magnetic field generated by the excitation current to counteract the residual magnetism, leading to its disappearance; 3. Open circuit in the excitation circuit. Poor electrical contact in the generator excitation circuit, loose connections, or broken wires can interrupt the circuit, resulting in no excitation current in the AC generator excitation winding; 4. Interruption in the DC side circuit of the rotating rectifier.