Brushless motors and brushed motors are two common types of motors, and they have a wide range of applications in different application scenarios. So, which motor has more power? This article will provide a detailed analysis of this issue from the following aspects.
1.Definition and structure differences.
A brushed motor, as the name suggests, is a motor with carbon brushes and a commutator inside the motor. The carbon brush is responsible for introducing the current into the rotor, while the commutator is responsible for changing the direction of the current as the rotor rotates. The structure of this motor is relatively simple and the cost is low, but there are problems such as wear and sparks.
A brushless motor, also known as a brushless DC motor (BLDC), is a type of motor that does not have carbon brushes and commutators. It drives the rotor to rotate by controlling the current in the coil through an electronic controller. Since there is no carbon brush friction, the brushless motor has a longer life, higher efficiency and lower noise.
2.Power output capability.
In terms of power output capability, brushless motors typically have higher power density and efficiency. This is mainly because the brushless motor uses an electronic controller to regulate the current, which can achieve more precise control, thus improving the operating efficiency of the motor. In addition, the brushless motor has a more compact structure, which can increase the power output to a certain extent.
In contrast, the power output capability of brushed motors is relatively low. Although the structure of a brushed motor is relatively simple, its efficiency and power density are limited due to wear and tear of carbon brushes and commutators, as well as problems such as sparks.
3.Fields of application.
Due to its high power output capacity and high efficiency, brushless motors are widely used in many demanding application scenarios, such as electric vehicles, drones, industrial automation, etc. These scenarios have high performance requirements for motors, and the superior performance of brushless motors makes them the first choice.
However, in some low-end markets and application scenarios with low performance requirements, such as household appliances and toys, brush motors still have a certain market share. This is because the cost of brushed motors is low, the structure is simple, and the maintenance is convenient.
4.Trends.
With the development of science and technology and the continuous improvement of requirements for environmental protection and energy saving, brushless motors are more and more widely used in various fields. Especially in the fields of electric vehicles and drones, brushless motors have become the mainstream choice. With the advancement of technology, the cost of brushless motors is gradually decreasing, making them more widely used.
In conclusion, judging from the current technology and market situation, the power of brushless motors is usually greater than that of brushed motors. However, when selecting a motor, it is also necessary to consider it comprehensively according to the specific application scenario and performance requirements.