alexa Direct Torque Controlled Brushless DC Motor Drive with Rotor Position Estimation using LabVIEW | Abstract
ISSN ONLINE(2278-8875) PRINT (2320-3765)

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

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Abstract

In this paper, Direct Torque Control (DTC) of brushless dc motor drive is presented. This control algorithm is implemented in the constant torque region of BLDC motor drive. Unlike conventional three phase DTC drives, the proposed DTC approach introduces two phase conduction mode. In the proposed DTC, the quasi-square wave current is obtained by properly selecting the inverter voltage space vectors of the two phase conduction mode from a simple look-up table. This will improve the torque response compared to other control strategies. The rotor position is estimated from the back emf constants as opposed to the hall sensor output. A theoretical concept is developed and the validity of the proposed DTC of BLDC motor drive scheme with rotor position estimation are verified through the simulation results using LabVIEW.

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Author(s): Sajana Kunjumon, Johnson Mathew

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