alexa Abstract | Position Sensorless Control of BLDCM Using Direct Torque Control
ISSN ONLINE(2278-8875) PRINT (2320-3765)

International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering
Open Access

OMICS International organises 3000+ Global Conferenceseries Events every year across USA, Europe & Asia with support from 1000 more scientific Societies and Publishes 700+ Open Access Journals which contains over 50000 eminent personalities, reputed scientists as editorial board members.

Open Access Journals gaining more Readers and Citations

700 Journals and 15,000,000 Readers Each Journal is getting 25,000+ Readers

This Readership is 10 times more when compared to other Subscription Journals (Source: Google Analytics)

Special Issue Article Open Access


In this paper, speed and position sensorless control of BLDC motor with non sinusoidal back EMF using direct torque control with an improved flux estimation algorithm has been proposed. The rotor position is obtained through calculations by generating an orthogonal flux system. PI controllers are used for tuning. The inverter voltage space vector for a two-phase conduction mode is derived from a simple look-up table to obtain the desired quasi-square wave current. The output of the hysteresis controller is fed to the look-up table. The look-up table includes input information from torque, flux and sector to produce the corresponding switching pulses for the inverter. This simplifies the switching and decreases the processing time, unlike the PWM or Space vector PWM controls. It gives faster torque and speed response with reduced ripples. It also provides an accurate speed control. The proposed method closely resembles the DTC used in ac sinusoidal motors but differs in its flux estimation algorithm. This methodology improves the efficiency of the drive. The validity and practical application of the proposed two-phase conduction DTC of BLDC motor drive scheme is verified through simulations on a 24V 4000rpm PMBLDC motor.

To read the full article Peer-reviewed Article PDF image | Peer-reviewed Full Article image

Author(s): Dolly Nelson, Jayasri R. Nair

Share This Page

Additional Info

Loading Please wait..
Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version