The function of an automotive armature

　　 Automotive Armature It is the component that plays a core and pivotal role in the process of mutual transformation between mechanical energy and electrical energy in a motor. For a generator, it is the component that generates electromotive force, such as the stator and rotor of a DC generator and the stator of an AC generator. For a motor, it is the component that generates electromagnetic force, such as the stator and rotor of a DC motor.

　　The automotive armature is the component on the motor that has coils, and the coils are in relative motion to the magnetic field. In a generator, the rotating coils under force generate induced electromotive force, thus generating electricity. For a motor, the electrical coils are subjected to Ampere's force in the magnetic field, causing them to rotate in the magnetic field.

　　In most generators, the field magnet is part of the rotating element, and the armature is stationary, part of the stator. Motors and generators can be composed of a stationary armature and a rotating magnetic field or a rotating armature and a stationary magnetic field. Permanent magnets or the polarized parts of electromagnets and the moving iron parts of solenoids (especially when the latter are used as switches or relays) can also be considered armatures.

　　Composition of Automotive Armature:

　　Automotive armature windings are divided into two major categories: DC armature windings and AC armature windings. They are used in DC motors and AC motors respectively.

　　The automotive armature consists of an armature core and armature windings. The armature windings are the circuit part of the DC motor, and are the part that converts electrical energy by generating induced electromotive force and electromagnetic torque (for generators, it is the part that converts mechanical energy into electrical energy). The armature core is part of the armature circuit and also supports the armature windings, which are embedded in the slots of the armature core.

　　1. The induced armature principle of DC and AC motors is roughly the same. The current in the DC motor armature winding is also AC, and it needs to be rectified by the commutator to output DC.

　　2. AC motors are divided into induction motors (asynchronous motors) and synchronous motors. Induction motors are divided into squirrel-cage rotors and wound rotors according to their stator and rotor structure. Induction motors use stator windings to form a magnetic field, and rotor windings to convert electrical energy.

　　3. Synchronous motors use stator and rotor windings to form a magnetic field, and stator windings to convert electrical energy.

　　The armature usually refers to the part of the motor that requires an external power supply. The armature of a DC motor is the rotor, and the armature of an AC motor is the stator.

　　Role of Automotive Armature in DC Motors:

　　In a DC motor, the armature is the part of the rotor with wires, which can achieve the mutual transformation of mechanical energy and electrical energy. In a DC motor, the input DC power supply and armature windings can be subjected to Ampere's force in the magnetic field, forming a driving torque to drive the load to operate, converting the input DC power supply into output mechanical energy.

　　In a DC generator, driven by a prime mover, the armature windings cut the magnetic flux lines in the magnetic field, forming an induced electromotive force. According to the rectification effect of the brushes, the input mechanical energy is converted into output DC energy.