1. Working principle
Brushless DC motors use electrical drive devices such as semiconductor switching devices and position sensors to achieve electronic commutation, that is, replacing traditional contact commutators and brushes with electronic switching devices.
In short, the electronic commutator controls the on and off of the brushless DC motor coil based on the rotor position and speed signals. When the coil is energized, the stator coil generates a magnetic field, which interacts with the permanent magnet. The generated torque causes the rotor to rotate. When the coil is de-energized, the magnetic field disappears and the rotor keeps rotating due to inertia. By continuously controlling the on and off of the coil, the stator can be precisely controlled.
Brushless DC has the advantages of high reliability, no commutation sparks, and low mechanical noise. It is widely used in high-end audio decks, video recorders, electronic instruments, and automated office equipment.
2. Characteristics
- 1. Brushless, low interference: Without the brush, the most direct change of the brushless motor is that it will not generate sparks, thus greatly reducing the interference to remote control radio equipment.
- 2. Low noise and smooth operation: Without brushes, the friction force of the brushless motor is greatly reduced during operation, and the operation is smooth and the noise is low, which is also beneficial to the stability of the motor.
- 3. Long life and low maintenance cost: After becoming brushless, the only wear left on the brushless motor is the bearings, but the bearing wear is extremely low, so the brushless motor is considered a maintenance-free motor.
3. Application fields
- 1. Industrial equipment: Brushless motors generally work in automation equipment, industrial motors, consumer electronics, industrial robots and other products, such as computers, aviation, automobiles, smart home appliances, medical equipment, etc. These applications require high reliability and high precision. , High-efficiency brushless motor.
- 2. Home appliances: Brushless motors are commonly used in home appliances, such as power tools, air purifiers, vacuum cleaners, range hoods, fans, etc. These appliances require long life, high efficiency, and low noise, so brushless motors have become the best choice in the home appliance industry.
- 3. Robots: As an important application field of brushless motors, robots require flexible, accurate, and high-speed motors, and brushless motors can just meet these characteristics. Therefore, brushless motors play a key role in positioning, driving and turning robots.
- 4. Drones: As the latest application field of brushless motors, drones require high speed, low energy consumption, low noise, high speed, long life, and high efficiency, and brushless motors just meet these needs. Therefore, brushless motors are favored and widely used by drone manufacturers.
4. Future development direction
In response to the rapid development of today’s science and technology, brushless motors will also be more widely used. Especially in the development of artificial intelligence, automobiles, Internet of Things and other fields, brushless motors are regarded as the core carrier of electrification transformation. The rapid development of science and technology will also promote the further development and upgrading of brushless motors, making the application fields wider, so brushless motors will become one of the main achievements of electrical drive technology.
To sum up, with the development of science and technology, brushless motors will be more widely used and become an important carrier to promote electrification transformation.
As a brushless motor manufacturer, Shenzhen Zhongling Technology can provide brushless motors from 35W to 1000W with voltages of 24V-48V. It also produces matching brushless drivers that support RS485 and inductive drives. As one of the few suppliers that provides both motors and drives, Zhongling can quickly and efficiently help customers complete sample testing, actively assist in solving testing problems, and quickly promote project development.
Post time: Dec-05-2023