Motor as an electromechanical energy conversion device, application scope has throughout the various fields of national economy and People's Daily life. A brush dc motor has many advantages, the biggest drawback is a dc motor brush is easy to wear and operating life of motor than a brushless motor, aiming at the disadvantage of traditional dc brush motor, in the 1930 s began to develop electronic commutation to replace the mechanical brush commutation of brushless dc motor. Since the 1970 s, with the rapid development of power electronics industry, there appeared many high-performance power semiconductor devices and the advent of high-performance permanent magnet materials, permanent magnet brushless dc motor specific ac asynchronous motor, stepping motor and dc brush motor and other motor does not have the advantages of general in the case of brush with permanent magnet dc motor, basically can be replaced with permanent magnet brushless dc motor.
the advantages of brushless motor:
the advantages of permanent magnet brushless motor mainly include the following:
in pieces with good mechanical properties and regulating characteristics, can replace a dc motor drive, frequency conversion motor drive and speed regulation asynchronous motor and reducer.
mixer can run for high power at low speed, save reducer, direct drive big load.
mixer has all the advantages of traditional dc brush motor, and cancelled the carbon brush and slip ring structure.
mixer torque characteristic is excellent, medium and low speed torque performance is good, big start torque, small starting current.
infinitely adjustable-speed, large range of speed regulation, and the overload capacity is strong.
in pieces of small volume, light weight, large output.
in pieces of soft soft stop, good braking performance.
mixer motor itself has no excitation loss and carbon brush loss, high efficiency and comprehensive energy saving effect is good.
high reliability, good stability and strong adaptability, simple repair and maintenance.
turbulence shock resistance, and low noise, little vibration, smooth operation, long service life.
does not produce sparks, especially suitable for public places, anti-jamming and security performance is good.
