Starter armature: armature knowledge points

　　 Starter armature The manufacturer states that the armature plays a key and crucial role in the mutual conversion of mechanical energy and electrical energy. For generators, it is the component that generates electromotive force, such as the rotor in a DC generator and the stator in an AC generator; for motors, it is a component that generates electromagnetic force, such as the rotor in a DC motor.

　　The armature is the part of a motor that has coils, and the coils move relative to the magnetic field. In a generator, an induced electromotive force is generated in the forced rotating coil to generate electricity. In a motor, the energized coil is subjected to the Ampere force in the magnetic field, causing it to rotate in the magnetic field.

　　 The starter armature manufacturer states, In most generators, the field magnets rotate and are part of the rotor, while the armature is stationary and part of the stator. Motors and generators can consist of a stationary armature and a rotating magnetic field or a rotating armature and a stationary magnetic field. The pole shoes of permanent magnets or electromagnets and the moving iron parts of solenoids (especially when the latter are used as switches or relays) can also be called armatures.

　　 The starter armature manufacturer states, Armatures are divided into two categories: DC armature windings and AC armature windings. They are used in DC motors and AC motors respectively. Including the armature core and armature windings, the armature windings are the circuit part of the DC motor, and also the part that induces electromotive force and generates electromagnetic torque for electromechanical energy conversion (generators convert mechanical energy into electrical energy). The armature core is both part of the main magnetic circuit and the support part of the armature windings, and the armature windings are embedded in the slots of the armature core. The principle of induced armature in DC motors and AC motors is roughly the same. The current in the DC motor armature winding is AC, and it is only DC when output through the commutator.

　　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 the rotor structure. Induction motors generate a magnetic field through the stator windings, and the rotor windings perform electromechanical energy conversion. Synchronous motors are magnetic fields generated by the rotor windings, and electromechanical energy conversion is performed through the stator windings. The armature generally refers to the part of the motor that requires external power supply. The DC motor armature is the rotor, and the AC motor armature is the stator.

　　 The starter armature manufacturer states, In a DC motor, the armature is the part of the rotor with conductors, realizing the mutual conversion of mechanical energy and electrical energy. In a DC motor, a DC power supply is input, and the armature windings are subjected to the Ampere force in the magnetic field, generating a driving torque to drive the load to move, converting the input DC energy into output mechanical energy. In a DC generator, driven by a prime mover, the armature windings cut the magnetic induction lines in the magnetic field to generate induced electromotive force. Under the rectification of the brushes, the input mechanical energy is converted into output DC energy.