Specializing in the design and manufacture of automotive motor armatures and stators.

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P-gear armature: What is an armature

Release Time:

2022-08-01

   P-type armature The manufacturer states that motors play a crucial and pivotal role in the process of converting mechanical energy and electrical energy into each other. 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.

   P-type armature manufacturer said The armature is the relative motion of the coil with respect to the magnetic field of the coil-carrying component in the motor. 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.

  In the mid-19th century, the term "armature" was early used for inductors, that is, holders of magnets.

  Part of an alternator or related equipment can be represented by any mechanical or electrical aspect. Although these two sets of terms are clearly separated, they are often used interchangeably, or a combination of mechanical and electrical terms is included. This can cause confusion when using composite motors such as brushless alternators, or when talking to people accustomed to using different configurations of motors.

  In most generators, the field magnet is rotating and is part of the rotor, while the armature is stationary and is part of the stator. Motors and generators can consist of a fixed armature and a rotating magnetic field or a rotating armature and a fixed 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.

   P-type armature manufacturer said When a synchronous generator outputs a load, the magnetic field generated by the current in the armature winding acts on the main magnetic field, which is the armature reaction of the synchronous generator; 1) When the output of the same generator is a capacitive load, the direction of the armature reaction magnetic field is the same as the direction of the main magnetic field, which will increase the magnetism of the main magnetic field; 2) When the output of the same generator is an inductive load, the direction of the armature reaction magnetic field is opposite to the direction of the main magnetic field, which will demagnetize the main magnetic field; 3) When the output of the same generator is a resistive load, the direction of the armature reaction magnetic field is perpendicular to the direction of the main magnetic field, opposite to the direction of the main magnetic field at the front pole tip of the main magnetic pole, thus demagnetizing the main magnetic field; the rear pole tip of the main magnetic pole is in the same direction as the main magnetic field, which will increase the magnetization intensity of the main magnetic field; because the motor operates in a state where the magnetic circuit is close to saturation, the effect of magnetization is less than demagnetization, and the magnetic field will generally be slightly reduced.


P gear armature

09-13

2022

Methods for winding the armature of a DC brushless automotive motor

The method for winding the armature winding of a DC brushless car motor is to leave a section of the cable end free and tie it tightly to the shaft. Hold the car armature with one hand, and wind the coil inductance clockwise with the other hand. Taking a five-slot armature as an example, the first coil is 1-5, the second coil is 2-6, then 3-7..., and so on. The sides of many components are on the next layer. The 5-9 components have one side on the next layer and the other side on the top layer. The sides of many components are on the top layer. In order to ensure the insulation between the top layer and the next layer components, it is advisable to place 0.1-0.15mm thick insulating paper pads in between. When the coil inductance in the slot reaches a certain level, a crossbar is needed to make it reach the bottom of the slot. When winding the coil inductance, the wire should be tightened first. Whether in the slot or the wire connection part, it is necessary to prevent the occurrence of crossed turns to prevent excessive space occupation and short circuit between turns due to partial stress of the wire. After all the windings are wound, the wire ends of the same winding component are bundled together, then the insulation layer of the wire connector is removed, different color waterproof sleeves are used, and they are embedded in the corresponding commutator segments. The important role of the armature in a DC brushless motor: DC motor,

08-22

2022

Design rules for automotive armatures

Automotive armature manufacturers indicate that single-layer windings are not suitable for large-capacity motors, and small-capacity motors should not be double-layered. The magnetic flux density of the motor core should not be too high or too low. When the frequency and thickness of the silicon steel sheet core material are constant, the iron loss depends on the magnetic flux density. If the magnetic flux density is too high, the iron loss increases, and the motor efficiency decreases. The increased heat from the iron core increases the motor temperature, and the increased excitation power increases the motor power factor, so the magnetic flux density of the core should not be too high. Try to avoid excessive saturation of the magnetization curve. If the magnetic density is too low, it will increase the amount of motor material used, increasing the cost. The rotor teeth are narrow, the magnetic density is high, the slot entry wire is large, that is, the automotive armature slots are large. Automotive armature manufacturers indicate that due to poor air conduction, there are many gaps in the slots, affecting the coils and easily damaging the heat dissipation of the insulation material, accelerating the increase in motor temperature. The slot fill factor of the motor slots cannot be too high or too low. Usually, the slot fill factor for low-speed motors is 75% to 85%, which can effectively prevent the enamelled wire from loosening in the slots. The design of the motor rotor slot shape should use parallel trapezoidal recesses as much as possible, and the edges of the recesses should not have sharp corners. Try to use a circular bottom recess, because the circular slot is filled with aluminum, which is easy to injection mold and the stator chip is easy to insert. The coil current density should not be...

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