What happens when a car's generator fails?

[LeMalia]

When a car's generator fails, it can result in the car being unable to charge, having too small a charging current, too large a charging current, an unstable charging current, or the generator not producing electricity at all. The car generator is the main power source of the vehicle, functioning to supply power to all electrical devices (except the starter) when the engine is running normally (above idle speed), while also charging the battery. Based on the three-phase stator winding of a standard AC generator, additional winding turns are added with lead-out terminals, and an extra set of three-phase bridge rectifiers is included. At low speeds, the output is from the original winding and the additional winding connected in series, while at higher speeds, only the original three-phase winding provides the output.