Overview of Automotive Armature

　　 Automotive Armature In the process of converting mechanical energy and electrical energy in a motor, this product is a key and pivotal component. For a generator, it is the component that generates electromotive force. Let's take a detailed look at the automotive armature and learn more.

　　The automotive armature is the component in the motor that has coils, and the relative movement of the coils and the magnetic field. In a generator, induced electromotive force is generated in the coils, which rotate under force to generate electricity. In a motor, the energized coils are subjected to Ampere force in the magnetic field, causing them to rotate in the magnetic field. Since the automotive armature plays a very important role, you should know that in fact, part of an AC generator or related equipment can be represented in mechanical or electrical terms. Although distinctly separate, note that these two sets of terms are often used interchangeably, or include a combination of mechanical and electrical terms. This can lead to confusion when using composite machines such as brushless AC generators, or when conversing between people accustomed to using differently configured machines. Therefore, in most generators, the excitation magnets rotate and are part of the rotor, while the automotive armature is stationary and part of the stator. Motors and generators can be constructed with either a stationary armature and rotating magnets or a rotating armature and stationary magnets.

　　The demagnetizing effect of the automotive armature can be overcome by adding extra ampere-turns to the main excitation winding. Having common magnetic poles reduces the cross-magnetization effect. The reduction of armature reaction is the effect of the magnetic field on the distribution of the main pole flux of the generator. In addition, you also need to know that since the automotive armature is wound with coils, whenever current flows in the coils, a magnetic force is formed in the automotive armature. This magnetic force is at right angles to the generator magnetic field and is called the cross-magnetization of the armature. At this time, the function of the automotive armature is to distort the generator magnetic field and move the neutral plane. This is the position where the armature windings move parallel to the magnetic lines of force, which is why the axis located in this plane is called the magnetic neutral axis. This effect is called armature reaction and is proportional to the current flowing through the armature coils. The generator brushes must also be placed on top; that is, they must contact the commutator segments connected to the armature coils without inducing electromotive force. If the brushes contact commutator segments outside the plane, it will short-circuit the "energized" coils, resulting in arcing and power loss.