Brushless dc motor control board optimising design

Abstract

The main subject of this project is to control a DC Brushless three phase motor, without any kind of internal or external sensor, taking the most of the resources that the micro controller has: input and output pins, analogical digital converters and timers; all of this is oriented to a PWM control driven by software. The power stage is fitted in just one encapsulating that contains the three gate drivers necessaries for the three phase such as the six power switches (I.G.B.T.'s) necessaries for generating the suitable pulses. Using this kind of power circuit we will save in space, commutation energy wastes and costs.