• K.Bhavana
• M.Seshu
• B.lalitha

BLDC motors stand for brush less DC motor. These motors are widely used in robotics, computer hard drives, ceiling fans, hybrid electrical vehicles due to its smooth operation. There are several advantages with these motors like torque provided by these motors are very high, smooth vibration less operation, high efficiency and power to weight ratio of BLDC motors is high. There are many current controllers used for speed control of BLDC motors. Even though conventional methods have fast response for load changes, their usage helps only in limiting either of the current or torque ripples and acoustic electromagnetic noise. Also non linearity characteristics of BLDC motor is difficult to operate using conventional methods. Hence many controllers are being designed to overcome the disadvantages of conventional methods for speed control of BLDC motor. The design of PI and fuzzy logic controllers is carried out by using MATLAB/SIMULINK. In this project a comparative simulation analysis will be done on BLDC motor with and without current controllers at fixed and variable speeds.

INTRODUCTION

"CLOSED LOOP CURRENT CONTROLLING TECHNIQUES FOR BLDC MOTOR SPEED CONTROL ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 4, page no.391-399, April-2019, Available :http://www.jetir.org/papers/JETIR1904C64.pdf

"CLOSED LOOP CURRENT CONTROLLING TECHNIQUES FOR BLDC MOTOR SPEED CONTROL ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 4, page no. pp391-399, April-2019, Available at : http://www.jetir.org/papers/JETIR1904C64.pdf