Field Oriented Control of BLDC Motor Drive Using Space Vector Modulation

Document Type : Original Article

Authors

Shahid Beheshti University

Abstract

The space vector modulation in a brushless DC motor (BLDC) with a permanent magnetic rotor is different from conventional motors due to the silent phases and trapezoidal back EMF. To overcome this problem, in this paper, an SVPWM method is proposed for field-oriented control of the BLDC motor drive. The main differences in the implementation of this method are the torque estimation and the presentation of the space vectors of the inverter voltage specified. In order to control the effective and direct torque, the torque is calculated in terms of the electromagnetic force and the three-phase current. According to the torque error between the given torque and the reference torque, the best voltage vector is selected, which performs the dynamic performance of the BLDC motor as a direct torque control system. As a result, it is expected to have a better dynamic response to load variations.
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Keywords


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Volume 6, Issue 1 - Serial Number 16
September 2018
Pages 23-29
  • Receive Date: 31 July 2018
  • Revise Date: 28 October 2018
  • Accept Date: 03 February 2019
  • Publish Date: 23 July 2018