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

EN

Introduction to the relevant knowledge of brushless motor stator and rotor

Release Time:

2023-05-10

   Brushless DC motor stator and rotor This is a type of motor used in power tools. Compared to traditional AC motors, it boasts a longer lifespan, higher efficiency, and lower noise. The application of stator and rotor technology has brought about a new technological breakthrough.

  Simply put, the stator and rotor design involves a stationary rotor and a rotating stator. In brushless DC motor stator and rotor technology, the internal stator windings are replaced with external windings, allowing the rotor (composed of permanent magnets) to move within the motor, thus driving its operation. Due to reduced mechanical losses, brushless motors are more efficient than traditional motors, significantly improving battery life.

  Brushless motors offer more flexible motor control than traditional motors, better adapting to various needs; they lack easily worn parts such as mechanical switches, resulting in a lifespan of 5-10 years; the absence of carbon brushes significantly reduces noise, enhancing user experience; and they require no regular maintenance, reducing maintenance costs.

  Brushless DC motor stator and rotor technology is widely used in power tools and household appliances. In the power tool industry, the advantages of brushless motors have led to their gradual replacement of traditional AC motors, becoming an industry trend. Simultaneously, with the manufacturing industry's increasing demands for quality and efficiency, brushless motors are also becoming popular in home appliances such as fans, washing machines, and air conditioners. The stator and rotor technology of brushless motors is constantly innovating, with new technologies enabling more precise motor control and improving performance at low speeds and under heavy loads. The application of brushless motors in communication and information processing electronics is also expanding, bringing new development directions to various industries.

  Looking ahead, the trend for brushless DC motor stator and rotor technology is to continuously improve efficiency, reduce costs, and enhance motor control systems, thereby achieving wider application across various fields. In short, the application of brushless DC motor stator and rotor technology has brought about significant breakthroughs in many areas, providing various industries with more efficient, reliable, low-cost, and low-noise technical solutions. The future prospects are undoubtedly vast. We can expect to see more technological breakthroughs in the future, bringing even better performance and user experience.

  A brushless DC motor stator and rotor refers to a motor where the rotor is connected to an iron core that does not rotate during motor operation. Let's take a closer look at the characteristics of brushless DC motor stators and rotors. Brushless DC motor stators and rotors do not need to be responsible for generating induced currents during rotation, resulting in high energy efficiency, and this efficiency is even more pronounced in high-power applications.

  The absence of friction components results in high durability. Furthermore, since the stator and rotor do not directly move within the rotor system, they are less prone to wear and damage, further enhancing motor lifespan. During the entire rotor rotation process, the brushless DC motor stator and rotor do not generate electrical sparks, drag, or friction, resulting in exceptionally low noise levels and superior quiet operation.

  Compared to traditional motors, brushless DC motor stators and rotors do not require direct contact, eliminating friction between the stator and rotor and the need for additional consumables, thus eliminating additional maintenance costs. Brushless DC motor stators and rotors can produce stronger torque and higher energy conversion rates. In short, brushless DC motor stators and rotors offer countless advantages and can be widely applied in mechanical design, aviation, and water pumps, providing countless conveniences for people.


Brushless motor stator and rotor

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...

< 1...161718...24 >