25-08-2017, 09:32 PM
Modelling and Simulation of BLDC Motor
1Modelling and Simulation.docx (Size: 13.88 KB / Downloads: 24)
ABSTRACT
The Aerial Delivery Research and Development Establishment is a laboratory of the Indian Defence Research and Development Organisation(DRDO), located in Agra, its primary function is research and development of aerostats and delivery systems.
In this project,construction and working of Brushless dc motor is studied.The modeling and simulation of BLDC motor is done using MATLAB/SIMULINK software regarding position and speed control of motor.Brushless dc motor has been widely used in drive system and servo control because of its fast response ,high density ,high efficiency ,low inertia ,high reliability ,maintenance free. It is however driven by a hard switching frequency, high switching losses, high electromagnetic interference, high acoustic noise and low efficiency. Therectifier/inverter with a simple commutation circuit to provide zero voltage turn on for the switches and soft turn off for diodes.Traditionally, BLDC motors are commutated in six-step pattern with commutation controlled by position sensors. To reduce cost and complexity of the drive system, sensorless drive is preferred.The power supplied to a BLDC motor can be DC power but it can also be AC if the drive electronics has the necessary circuitry to convert the AC power to DC.