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GS001

Microchip Technology
Part Number GS001
Manufacturer Microchip Technology
Description Getting Started
Published Jan 5, 2010
Detailed Description GS001 Getting Started with BLDC Motors and dsPIC30F Devices Author: Stan D’Souza Microchip Technology Inc. advance and i...
Datasheet PDF File GS001 PDF File

GS001
GS001

Overview
GS001 Getting Started with BLDC Motors and dsPIC30F Devices Author: Stan D’Souza Microchip Technology Inc.
advance and is implemented mainly in software at high speeds of rotation.
The result of phase advance is better efficiency in the BLDC motor operation.
INTRODUCTION As a means of reducing high energy and maintenance costs in motor control applications, BLDC motors are seeing a resurgence in applications where efficiency and reliability are important.
The dsPIC30F motor control devices are ideally suited to drive and control a wide range of BLDC motor types, in a large number of applications.
Microchip has developed a number of solutions using the dsPIC30F and BLDC motors.
This document will help you select an appropriate solution for your BLDC motor application.
Sensored BLDC Motor Control When driving a BLDC motor, it is important to know the position of the magnetic rotor with reference to the stator.
Most commonly, Hall effect sensors are used to generate feedback on the rotor position.
This type of control is called sensored BLDC motor control.
Most BLDC motors have three windings.
Based on the position of the magnetic rotor, two windings are energized at a given time with each phase conducting for 120 electrical revolution degrees, resulting in six distinct combinations of energization.
This type of drive is called “trapezoidal” or “six-step commutation”.
BLDC MOTOR BASICS DC brush motors have a permanent magnet on the stator with the motor winding on the rotor.
During rotation, the current in the windings is reversed using mechanical carbon brushes and a commutator located on the rotor.
The BLDC motor has permanent magnets on the rotor with the electrical windings on the stator.
The first obvious advantage of the BLDC motor is the elimination of the mechanical commutator and brushes, which significantly improves mechanical reliability.
The commutator and brushes in DC motors www.
DataSheet4U.
com also give rise to sparking, so eliminating these component...


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