Brushless Direct Current Motor Analysis and Controller Design

The paper presents the designing and software working trial reports of a Brushless Direct Current Motor(BLDCM) controller for implementation purpose in Electric vehicles. With the increasing demand of BLDCM for various industrial and automotive purposes, the demand for an efficient BLDCM Controller has also increased. For operating the motor, generally a constant DC source is applied to it via a controller. In the absence of a controller, a motor can start and there by operate at a constant speed proportional to the source voltage applied but cannot vary its speed according to the user demands as required in an electric vehicle. A BLDCM Controller receives input on the speed requirement from user as acceleration applied or breaking, depending on which the controller varies its voltage value to vary the speed. The fast response of the controller to accelerate, brake and control forward and reverse direction rotation or movement of the rotor contributes to the overall efficiency of the Electric Vehicle. Hence, effective and fast response of BLDCM controllers are vital in the designing of an Electric Vehicle. The design proposed is using an Arduino UNO controller for better technical support and fast responses.