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Application of neodymium iron boron tile in BLDCM

2019-12-11 08:56:49

The development time of BLDCM in our country is relatively short. With the increasingly mature and perfect technology, BLDCM has been developed rapidly. The wide application of BLDCM in the aircraft model products has driven the production and development of many small and medium-sized enterprises of NdFeB magnetic tile and NdFeB radial magnetic ring in the Pearl River Delta. It has been widely used in many fields, such as aircraft model, medical equipment, household appliances, electric vehicles, etc., and in Shenzhen Shenzhen, Changsha, Shanghai and other places have formed a large-scale industrial chain and achieved remarkable results in the research and development of new products in the field of BLDCM


As we all know, the NdFeB tile or NdFeB radial magnetic ring is just as important as the human heart in the motor products. After the current is electrified, the magnetic field generated by the coil drives the magnetic field of NdFeB tile or NdFeB radial magnetic ring. Therefore, the magnetic field strength of NdFeB tile or NdFeB radial magnetic ring is very important for the motor operation efficiency.


Let's first look at the advantages of BLDCM;


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


2. Low noise and smooth operation. Without the brush, the friction is greatly reduced, the running is smooth, and the noise is much lower. This advantage is a huge support for the running stability of the model


3. Long service life and low maintenance cost. Without electric brush, the wear of the brush less motor is mainly on the bearing. From the mechanical point of view, the brush less motor is almost a maintenance free motor. When necessary, it only needs to do some dust removal maintenance


As the name implies, there is no need for the original carbon brush for the BLDCM. A magnetic field is formed around the winding coil that rotates around the geometric axis of the motor. This magnetic field drives the permanent magnet steel on the rotor to rotate, and the motor starts to rotate. The performance of the motor is related to the number of neodymium iron boron tiles, the flux intensity of neodymium iron boron radial magnetic ring, the input voltage of the motor, and other factors, which really determine its function The performance of the electronic speed regulator is still no brush. A good electronic speed regulator needs the overall control of the process such as MCU control program design, circuit design and complex processing technology, so the price is much higher than that of the brush motor.