The structure of AC generator

The AC generator is mainly composed of the rotor, stator, excitation system, circuit control system and other parts. The rotor is the rotating part of the generator, the stator is the stationary part, and the excitation system provides a magnetic field between the rotor and the stator, so that the conductor can generate an electromotive force when moving in the magnetic field. The circuit control system is responsible for monitoring parameters such as voltage, current, power, etc., and controlling the output of the generator.

The rotor is the rotating part of the generator, consisting of a set of conductors, which are generally arranged in a ring on the rotor. The conductors on the rotor generate alternating magnetic flux through rotation, which will pass through the conductors on the stator, thereby inducing electromotive force in the conductors. In an AC generator, three-phase current is usually used to generate electrical energy.

Rotor: shaft: acts to output torque.

Rotor core: It is a cylindrical body made by pressing mutually insulated silicon steel sheets onto the rotor shaft. Uniform grooves are punched on the outer circle of the silicon steel sheets for embedding the rotor windings. These grooves are called guide grooves.

Stator: Usually made of cast iron or cast steel. Its function is to fix the iron core and stator winding, and support the rotor shaft with two front and rear end covers. Its outer surface is cast with heat dissipation ribs.

The stator is the stationary part of the generator, which is composed of a set of windings. The number and arrangement of these windings can affect the output performance of the generator. When the conductors on the stator are connected to the circuit, current will be generated, causing the generator to output electrical energy.

The stator is the outermost cylinder with many windings wrapped around the inside of it. These windings are connected to the external AC power supply. The entire cylinder is connected to the base and is fixed, so it is called a "stator".

Iron core: It is the magnetic circuit part of the motor. The iron core is fixed in the base and is made of silicon steel sheets with surface insulation. The inner circle of the silicon steel sheet is punched with uniform notches for placing the stator winding. Stator winding: It is the circuit part of the motor.

The excitation system provides a magnetic field between the rotor and the stator, so that the conductor can generate an electromotive force when moving in the magnetic field. There are many types of excitation systems, the most common ones are constant magnetic excitation systems and variable magnetic excitation systems. The magnetic field size and direction of the constant magnetic excitation system remain unchanged, while the variable magnetic excitation system can adjust the size and direction of the magnetic field as needed, thereby changing the output performance of the generator.

The circuit control system is responsible for monitoring parameters such as voltage, current, and power, and controlling the output of the generator. The circuit control system includes devices such as voltage stabilizers and speed regulators, which can stabilize the output of the AC generator and meet actual needs.

AC motors are divided into synchronous AC motors and induction motors. Both types of motors have stator-side windings into which AC power is fed to produce a rotating magnetic field, but the rotor windings of synchronous AC motors usually require an exciter to provide DC power (excitation current).