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What Is DC Brushless Motor?

Dec 23, 2019

What Is DC Brushless Motor?



The stator winding of motor is mostly made of three-phase symmetrical star connection, which is very similar to three-phase asynchronous motor. In order to detect the polarity of the motor rotor, a position sensor is installed in the motor.

The driver is composed of power electronic devices and integrated circuits. Its function is to receive the start, stop and brake signals of the motor to control the start, stop and brake of the motor; to receive the position sensor signals and forward and reverse signals to control the on-off of each power tube of the inverter bridge to generate continuous torque; to receive the speed command and speed feedback signals to control and adjust Rotate speed; provide protection and display, etc.

In the past 30 years, the research on variable frequency speed regulation of asynchronous motor is to find the way to control the torque of asynchronous motor. Rare earth permanent magnet BLDCM will show its advantages in the field of speed regulation because of its wide speed regulation, small volume, high efficiency and small steady-state speed error.

Brushless DC Motor is also known as DC frequency conversion because it has the characteristics of DC brush motor and is also the device of frequency change. It is also known as BLDC. The operation efficiency, low-speed torque and speed accuracy of Brushless DC Motor are better than those of any control technology, so it is worth the attention of the industry.

Although the development time of BLDCM in our country is short, it has developed rapidly with the development of technology. It has been widely used in many fields, such as aeromodelling, medical equipment, household appliances, electric vehicles, etc., and has formed an initial industrial chain in Shenzhen, Changsha, Shanghai, etc.

In recent years, BLDCM has become a fast developing power in the field of model. Due to the reasons of production and price, in the past few years, the BLDCM is mostly used in medium and high-grade aviation models. Now, due to the rapid development of machining technology, the production cost of BLDCM has decreased a lot. At present, it is entering all levels of the model field, from the electric remote control vehicle to the electric remote control ship to the electric model aircraft, everywhere.

More details about BLDC, please contact us via

Contact Person: Lulu Fung

E-mail: lulu@ttmotor.com

Mobile Phone: (86)158 1855 9903

Tel: (86)755-8250 1105

Add: 4th Floor, C Building, Huilongda Industrial Park, Shilong Community, Shiyan, Bao'An District, ShenZhen, China

Company Name: TT Motor (HK) Industrial Co., Ltd.

Website: www.ttmotor.com

Lulu Fung