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Brushless motor controller features: principle, advantages and application!

by:Hoprio     2020-07-17

1. BLDC advantages: motors BLDC do not use the mechanical structure of the reversing brush motors and direct use of the electronic commutator, in use BLDC compared with brush motors motor controller has many advantages, such as: can obtain better torque speed characteristic; High speed dynamic response; High efficiency; Long life; Low noise; High speed. In addition, BLDC better torque motors and overall dimensions than makes it more suitable for the motor controller and its weight is more sensitive to the size of the occasion. In this application note will be for BLDC structure, basic principle, characteristics and application of the motors do a series of discussion. Explore process may use the term can be found in appendix B, 'glossary' corresponding explanation. 2. BLDC structure and basic working principle of the motors: BLDC belongs to a kind of synchronous motor controller, motors that means it's magnetic fields produced by the stator and rotor magnetic field is the same frequency, so the BLDC doesn't create common induction motors motor controller frequency offset phenomenon. BLDC is in single phase motors, 2 and 3 phase motor controller, the difference between the phase of the type of different decision to the stator coil winding. Here we will focus on three phase BLDC. Motors is the most widely used 2. 1 stator: BLDC stator is composed of many motors silicon steel sheet after the overlying and axial pressing and become, each within the notching has certain coil winding, see below. In the traditional sense, BLDC stator and stator of the induction motor controller of motors are similar, but in there is a certain difference on the distribution of the stator winding. Most of the BLDC stator three motors in star line winding, each winding by many internal combination according to certain ways of the steel composition, an even number of distribution around the stator winding of an even number of poles.
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