The brushless DC motor is a typical mechatronic product, which is composed of the motor body and the driver. Brushless motor refers to a brushless and commutator (or collector ring) motor, also known as a commutatorless motor. As early as when the electric motor was born in the 19th century, the practical motor was a brushless motor, that is, an AC squirrel cage asynchronous motor, which has been widely used. However, asynchronous motors have many insurmountable defects, which make the development of motor technology slow. The transistor was born in the middle of the last century, so the brushless DC motor in which the brush commutator was replaced by the transistor commutator came into being. This new type of brushless motor is called an electronically commutated DC motor, which overcomes the shortcomings of the first generation of brushless motors.
Continuous load application
Mainly refers to the fields that require a certain speed but do not require high-speed precision, such as applications such as fans, pumps, blowers, etc., these applications are relatively low-cost, and most of them are open-loop control.
Variable load applications
It is mainly the application where the speed needs to be changed within a certain range, which has higher requirements for the motor speed characteristics and dynamic response time characteristics.Such as household appliances, dryers, compressors, etc. are a good example. The automotive industry has relatively high application system costs in oil pump control, electronic control, and engine control.
Main features
1. It can replace DC motor speed control, frequency converter + variable frequency motor speed control, asynchronous motor + reducer speed control; Brushless DC motor Brushless DC motor (3 pieces) 2. It has the advantages of the traditional DC motor, eliminating the carbon brush and slip ring structure; 3. It can run at low speed and high power, which can directly save the heavy load driven by the reducer; 4. Small size, light weight and heavy workload; 5. Good torque characteristics, good torque performance at medium and low speeds, large starting torque and small starting current; 6. Stepless speed regulation, speed regulation range, overload capacity; Soft start and soft brake, good braking characteristics, can save the original mechanical brake or electromagnetic brake device; 8. High efficiency, the motor itself has no excitation loss and carbon brush loss, eliminating multi-stage deceleration loss, and the comprehensive power saving rate can reach 20%~60%. 9. High reliability, good stability, strong adaptability and simple maintenance; Anti-turbulent vibration, low noise, low vibration, stable operation and long life; No spark, especially suitable for explosive places, explosion-proof; 12. Trapezoidal wave magneto and sine wave magneto are available.
