Position Sensorless Speed Control of Brushless DC Motor

Shafeeq K, Mohamed (2018) Position Sensorless Speed Control of Brushless DC Motor. MTech thesis.

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Abstract

This project work presents the position sensor less speed control of brushless DC motor, brushless DC motors has the similar speed and torque characteristics of conventional DC motors, instead of commutating brushes brushless DC motor uses an electronic commutation system. To obtain the commutation instants the position of permanent magnet rotor position should detect, normally we use a position sensor to detect the position. instead of using the position sensor to detect the rotor position here in this project we are using the zero crossing instances of the back EMF to get commutation instances, when we use the phase back EMF wave forms for detecting the commutation instances there will be a 30-degree electrical phase shift between the commutation instances and the zero crossing points. To avoid this 30-degree phase shift between the commutation instances and zero crossing points instead of using the phase back EMF wave forms we uses the line to line back EMF wave forms.

Item Type:Thesis (MTech)
Uncontrolled Keywords:Brushless DC; Zero crossing points; Back EMF; Commutation
Subjects:Engineering and Technology > Electrical Engineering > Power Networks
Engineering and Technology > Electrical Engineering > Image Processing
Engineering and Technology > Electrical Engineering > Power Electronics
Divisions: Engineering and Technology > Department of Electrical Engineering
ID Code:9889
Deposited By:IR Staff BPCL
Deposited On:17 Jul 2019 20:50
Last Modified:17 Jul 2019 20:50
Supervisor(s):Samanta, Susovon

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