In recent years, China's small and medium-sized motor industry and micro special motor industry has developed rapidly. Brushless DC motor has gradually replaced the brush motor with its high efficiency and low noise, and has become a new star in the industry application. This is reflected in the fast package of China's leading outsourcing service platform. It is reported that in the motor control task of Fastpack 100 +, the brushless motor nearly monopolizes the platform motor control task demand with 78% of the total. In the following, the author analyzes some mainstream application scenarios of Brushless DC motor for readers through some cases.
Mainstream application scenario 1: brushless DC motor for industrial equipment
Industrial application scenarios have higher requirements on the accuracy, efficiency and performance of the equipment. Brushless motor is widely used in some light industrial machinery which requires precise control of speed and position. For example, the task of "motor control, protection, condition monitoring" released by the fast package platform is applied to the industrial feeder.
Mainstream application scenario 2: brushless DC motor for automobile
With the development of automobile to energy saving and environmental protection, high efficiency permanent magnet motor including brushless DC motor has a good application prospect in automobile. In addition to being the core part of automobile drive, the motor can also be used in automobile air conditioning, wiper, electric door airbag, electric seat and so on. The author learned from the side that the case of "DC motor control with Hall sensor" of Fastpack platform is used in the wiper drive of automobile.
Mainstream application scenario 3: brushless DC motor for medical devices
With the development of domestic medical technology and the improvement of people's living standards, the requirements for the practicability and experience of medical devices are increasingly stringent. For example, because of the need of surgery, the power system of orthopedic medical equipment should be able to continuously change speed in a wide range, so as to meet the requirements of milling, drilling, sawing and other occasions. The existing drive motors for orthopedic medical devices are single AC DC series excited motors and voltage regulators, which have very high noise.
Mainstream application scenario 4: brushless DC motor for household appliances
There are compressor motors in air conditioner and refrigerator. The traditional motor for compressor is usually asynchronous motor with low frequency and power factor. The situation has been improved after adopting frequency conversion technology. At the end of 2009, Dyson's first leafless fan was born, marking the penetration of BLDCM from industrial application to smart home appliances.
Mainstream application scenario 5: brushless DC motor for electric vehicle
At present, the starting motor and magneto of electric starting motorcycle are two independent motors. The structure of the engine is complex. When the overrunning clutch slips, the starting characteristics of the electric vehicle will be seriously affected. When the starting motor reverses through the brush, the brush is seriously worn, which needs regular maintenance.
