What is the Principle of an Automotive Generator?

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When the external circuit energizes the excitation winding through the brushes, a magnetic field is generated, magnetizing the claw poles into N and S poles. As the rotor rotates, the magnetic flux alternates within the stator windings. According to the principle of electromagnetic induction, an alternating electromotive force is generated in the three-phase windings of the stator. This is the power generation principle of an alternator. Below is a related introduction: Introduction: The automotive generator is the main power source of a vehicle. Its function is to supply power to all electrical devices (except the starter motor) and simultaneously charge the battery when the engine is running normally (above idle speed). Classification: Automotive generators can be divided into DC generators and AC generators. Since AC generators outperform DC generators in many aspects, DC generators have been phased out.