C. Gurunathan, M. Murugan, K. S. Rangasamy College of Technology, Tiruchengode, Tamilnadu, India.
R. Jeyabharath, K.S.R. Institute of Engineering and Technology, Tiruchengode, Tamilnadu, India.
DOI : 01.0401/ijaict.2015.11.09
International Journal of Advanced Information and Communication Technology
Received On : February 10, 2018
Revised On : March 11, 2018
Accepted On : April 15, 2018
Published On : May 05, 2018
Volume 05, Issue 05
Pages : 851-854
Abstract
In recent years BLDC Motor and their drives are becoming a major market trend in home appliances, automotive applications and in HVAC industry for their better reliability, silent operation and high efficiency with low maintenance. For a traditional BLDC Motor, a six step commutated pattern with position sensors are provided which increases the cost of the BLDC Motor. Hence the preference is switch over to the sensorless drive to reduce the cost and complexity. The existing conventional sensorless scheme which has its own limit for the applications which is the major drawback of back emf sensing based on motor neutral voltage. In this paper a new technique is implemented with direct back emf detection for sensorless BLDC Motor drives. To measure the back emf, there is no need of motor neutral voltage. During the Off time of the PWM, the terminal voltage of the motor is directly proportional to the phase back emf. For the back emf sensing, there is no need of attenuation filtering. At low cost, the wider motor speed range had achieved with superior performance which shows with the help of MATLAB/ SIMULINK Software.
Keywords
BLDC Motor, Zero Cross Detector, Sensor less Torque Ripple.
Cite this article
C. Gurunathan, M. Murugan, R. Jeyabharath, “A Back EMF Detection Method Is Implemented for Sensor less BLDC Motor” INTERNATIONAL JOURNAL OF ADVANCED INFORMATION AND COMMUNICATION TECHNOLOGY, pp.851-854, May 05, 2018.
Copyright
© 2018 C. Gurunathan, M. Murugan, R. Jeyabharath. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.