Brushless dc motor

Brushless dc motor is a kind of self-control type permanent magnet synchronous motor,but is a square

wave power supply,and usually say acmotortrading.blogspot.com of the permanent magnet synchronous motor is a sine wave power supply.Is said to be "dc motor",mainly considering the brushless motor controller is equivalent to a dc motor brush and commutator,to achieve "electronic commutation," Look from the dc side is equal to the dc motor.Dc servo used in dc motor,brushless dc motor is not; Brushless dc motor and ac servo motor In fact is one thing,be ac synchronous motor (ac 6.5hp gasoline generator set permanent magnet synchronous servo motor).Q (C):motor of log? A: n1 = 60 * f / 2 p p said general motors to count,the number of 2 p is.1 to include N gasoline generator spare parts pole and S pole,pole,of course,is a logarithmic twice.Synchronous motor mechanical speed = 60 * running frequency/log; Asynchronous electrical machinery speed = 60 * running frequency * (1 - slip rate)/log