Fabrication And Testing Of BLDC Driver Circuit

Abu, Ahmad Saufi (2015) Fabrication And Testing Of BLDC Driver Circuit. Project Report. UTeM, Melaka, Malaysia. (Submitted)

Text (24 Pages) Fabrication And Testing Of BLDC Driver Circuit.pdf - Submitted Version Download (475kB)

Abstract

Brushless Direct Current Motor (BLDC) is widely used, especially in automation application, food processing and others. It use permanent magnet to be replace the coil winding in stator. The advantages of BLDC motor compared to brushed DC motor are, speed versus torque characteristics, high dynamic response, high efficiency, noiseless operation and high speed ranges. To operate BLDC motor, it requires specific driver to run. This project is covered about redesigning the circuit to suit with Scrubber Machine project. The circuit is at first simulated by using MATLAB, Simulink to verify the operation of the circuit before fabrication process. Suitable material for PCB fabrication and component placement is important to ensure losses could be reduced by appropriate thermal ventilation. BLDC motor driver is using logic gate combination AND gate and NOT gate represented in IC’s HD 4804 and HD 4808 and 3 Phase Bridge Inverter where MOSFET (IRF640) is used to drive the BLDC motor. After circuit is fabricated, test had been held to test the functionality and the efficiency in term of power switching losses in switching components. In addition, the speed of BLDC motor is observed by the different injected voltage at input voltage. Outcome of this project is the circuit size and compatibility achieved without avoiding losses probability and design structure is part of prioritized.

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