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Why is the brushless motor the future trend of the motor industry?

Release time:2022/10/25

     A brushless motor is a device that converts electrical energy into mechanical energy. By consuming electrical energy, mechanical energy can be obtained to achieve certain purposes. In general, it can be used in the home appliance industry, such as the common electric fan, that is, the brushless motor converts electrical energy into mechanical energy to make the electric fan rotate. Secondly, the lawn mowers in the garden industry also use brushless motors. In addition to this, brushless motors are also often used in electric drill motors in the power tool industry.

 

    The brushless DC motor has no brushes and commutators, and is composed of a motor body and a driver. It is a typical mechatronic product. Although the history of brushless DC motors is not long and the price is higher than that of brushed motors, due to the obvious advantages of brushless motors, they are quickly favored by industries such as home appliances, automobiles, ships and machinery, and have developed rapidly. Can we make a bold guess - in the future, the motor industry will enter the "brushless" era.

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Why can brushless motors develop rapidly?

 

       The low price is undoubtedly the focus of the industry's attack on brushless motors. And the price of brushless motors is relatively high, so why does it still occupy a place in the motor market in a short period of time? Mainly because the brushless motor can guarantee the use effect and quality. When the quality and price can only be chosen, consumers with purchasing power will still give priority to the use effect.

 

Let's talk about the advantages of brushless motors:

 

(1) Brushless, low interference

The brushless motor removes the brush, and the most direct change is that there is no electric spark generated when the brushed motor is running, which greatly reduces the interference of the electric spark to the remote control radio equipment.

 

(2) Low noise and smooth operation

The brushless motor has no brushes, the friction force is greatly reduced during operation, the operation is smooth, and the noise will be much lower. This advantage is a huge support for the stability of the model.

 

(3) Long life and low maintenance cost

Without the brush, the wear of the brushless motor is mainly on the bearing. From a mechanical point of view, the brushless motor is almost a maintenance-free motor. When necessary, only need to do some dust removal maintenance.

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     Although the brushless motor has many advantages over the brushed motor, the performance characteristics of the brushless motor, such as excellent low-speed torque performance and large torque, are irreplaceable by the brushless motor. However, in terms of the ease of use of brushless motors, with the decreasing cost of brushless motor controllers and the development of brushless motor manufacturing technology and market competition, brushless power systems are in the stage of high-speed development and popularization, which is also extremely important. Greatly promoted the development of model sports.

 

     In addition, because the brushless motor itself has no excitation and carbon brush losses, the multi-stage deceleration loss is eliminated, and the comprehensive power saving rate can reach 20%~60%, so the price difference with ordinary motors can only rely on power saving. After one year, the purchase cost will be recovered, and in recent years, the world has been advocating energy conservation and environmental protection, and brushless motors can be said to be the trend of motor development.

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      Brushless motors usually have a service life of the order of tens of thousands of hours. However, when asked how long a brushless motor will last, it's really not a good arbitrary answer. Because its lifespan is indeed related to many factors. Of course, a good quality motor is bound to last longer than a poor quality motor. So what are the factors that affect the service life of brushless motors?

 

       First, the factors of the brushless motor itself

Bearings and coils are very important to the life of the brushless motor, and the motor needs to be replaced in time if it is damaged. Magnetic demagnetization is also a factor. So how should we avoid coil aging? This requires that the temperature of the coil should not be too high and ensure good heat dissipation, thus extending its life. Also avoid overheating and burning.

 

       Second, environmental factors

Brushless motors should be used in a ventilated, dry, non-corrosive environment with normal air temperature and pressure. If there are corrosive gases and high humidity in harsh environments, it is easy to damage the electrical and mechanical performance of the motor due to environmental factors. Therefore, corresponding motor protection measures must be taken according to the environmental conditions.

 

       Finally, the human factor

Due to the different skill levels of people operating brushless motors, unexpected errors can occur when operating the motor, such as stopping immediately after starting. Overload start; fault start can cause damage to the brushless motor, thus affecting its service life. If the user knows nothing about brushless motors, it is recommended to use a familiar motor or use it under the direction of the motor manufacturer.

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     Since 2007, NIDE Group has provided global customers with professional motor manufacturing solutions, including brushless motor manufacturing lines and assembly lines, helping customers build complete brushless motor production lines, providing customers with high-quality suggestions for motor manufacturing plants, and assisting the motor production line runs successfully in the customer's factory, enhancing the customer's market competitiveness.


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