The Direct Torque Control of BLDC Motor in the Modes without Flux Control and by Using Flux Control

(*) Corresponding author

Authors' affiliations

DOI's assignment:
the author of the article can submit here a request for assignment of a DOI number to this resource!
Cost of the service: euros 10,00 (for a DOI)


The current paper presents the Direct Torque Control (DTC) methods, implemented in six-switch inverter for brushless DC (BLDC) motors with non-sinusoidal back electromotive force, by using two-phase conduction modes. Then, the proposed two-phase conduction mode for DTC of BLDC motors in constant torque area is introduced.  In this control method only two phases  conduct  using a six-phase inverter at any moment of time. Choosing the spatial vectors of inverter voltage in two-phase conduction mode appropriately, the current with a desired waveform is obtained by a simple look-up table. Thus, it is possible to obtain the DTC of a BLDC motor drive with a faster torque response. In this paper, the modeling and simulation of direct torque control and direct flux control with Hall Effect sensor and non-sinusoidal back electromotive force are extensively examined by using a three-phase conduction method and a six-switch inverter.
Copyright © 2013 Praise Worthy Prize - All rights reserved.


Direct Torque Control (DTC); BLDC Motor; Back Electromotive Force (BEMF)

Full Text:



Salih Baris Ozturk,, “Direct Torque Control Of Permanent Magnet Synchronous Motors With Non-Sinusoidal Back-EMF, ” Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY, May 2008.

Salih Baris Ozturk, Member, IEEE, and Hamid A. Toliyat, Fellow, IEEE, “Direct Torque and Indirect Flux Control of Brushless DC Motor, ” IEEE/ASME TRANSACTIONS ON MECHATRONICS, VOL. 16, NO. 2, APRIL 2011.

S. B. Ozturk and H. A. Toliyat, “Direct torque control of brushless dc motor with non-sinusoidal back EMF,” in Proc. IEEE IEMDC Biennial Meet., Antalya, Turkey, May 3–5, 2007, vol. 1, pp. 165–171.

Y. Liu, Z. Q. Zhu, and D. Howe, “Direct torque control of brushless dc drives with reduced torque ripple,” IEEE Trans. Ind. Appl., vol. 41, no. 2, pp. 599–608, Mar./Apr. 2005.

Diansheng Sun, “Research on Torque Direct Control Method for Brushless DC Motors with Non-ideal Back EMF Waveforms,” 978-1-4577-0536-6/11/$26.00 ©2011 IEEE.

Qiang Wu, Guangwei Meng , Hao Xiong, Huaishu Li and Libing Zhou, “A Novel Starting Control for Sensorless Three-Phase Permanent-Magnet Brushless DC Motor,” 978-1-4244-8039-5/11/$26.00 ©2011 IEEE.

A. Halvaei Niasar; "Control Brushless DC Motor ",Nishabor University of Iran 2011.


  • There are currently no refbacks.

Please send any question about this web site to
Copyright © 2005-2024 Praise Worthy Prize