What is a high-speed brushless motor and how does a high-speed brushless motor dissipate heat

What is a high-speed motor? Generally speaking, a motor with more than 10,000 rpm can be called a high-speed motor, that is, a brushless motor with more than 10,000 rpm can be called a high-speed brushless motor, and it is also defined by the linear speed of the rotor rotation. The speed of the motor is generally greater than 50m/s , the centrifugal stress of the rotor is proportional to the square of the rotor speed, so the speed of the rotor structure design is reflected according to the speed of the rotor speed.

The application range of high-speed brushless motors is also relatively wide, and has different applications in different industries, such as laboratory instruments, high-speed centrifuges, mixers, and household wall breakers, hair dryers, power tools, etc.

How does a high-speed brushless motor dissipate heat?

The loss of the motor increases with the geometric progression of the rotational speed, and the heat generated by the high loss causes the temperature rise of the motor to increase rapidly. In order to maintain high-speed operation, it is necessary to design a cooling method that dissipates heat well. The usual high-speed brushless motor cooling method is: internal forced air cooling "The strong cold air can be directly blown into the motor to take away the heat of the coil and iron core.

"Internal Oil Cooling" is a combination of AVL designed high speed brushless motors with internal oil cooling in the stator slots, for example, in applications where the motor must be shut down and protected, or where there are no strong winds. Some motors also use a combination of winding oil spray cooling + stator oil cooling + rotor oil cooling.

The high-speed brushless motor can meet the user's performance requirements for the motor, and the performance parameters can also be adjusted as required, which will be an advantage of customized manufacturing.