SEMESTER 2 WEEK 2

Title:Research information about the project.
Objective:To ensure student understand about the project.

Discussion/Analysis:

This project will design the drive system for single phase brushless dc motor. The BLDC is droved to move in rotational.

Why use brushless DC motors ?

Brushless DC motors are synchronous motors suitable for use as a simple means of controlling permanent drives (e.g. ABS pumps, EHPS pumps, fuel pumps or cooling fans). This type  brushless DC motor will increasingly replace brushed DC motors. Brushed DC motors require maintenance, e.g. to service coal brushes and commutator. Another major problem with a brushed DC machine is the possibility of brush burnout in the event of an overload or stall condition.

The purpose of the development of the driving system is to control the speed of the motor. The main idea for controlling the speed of the motor is by controlling the switching of the power MOSFET.The power MOSFET will be control by MOSFET driver, while the MOSFET driver will be control by Logic-Gates which , and then the signal will be the input pulse to activate the MOSFET driver. To control the speed of the motor, the input voltage will be varied by user to desire speed.