Title: An improved control strategy without current sensors for DSTATCOM

Authors: Sanath Saralaya; K. Manjunatha Sharma

Addresses: Department of Electrical and Electronics Engineering, National Institute of Technology Karnataka, Surathkal, Karnataka 575025, India ' Department of Electrical and Electronics Engineering, National Institute of Technology Karnataka, Surathkal, Karnataka 575025, India

Abstract: An improved control strategy based on power balancing algorithm without using current sensors is presented in this paper. The mathematical model of this improved method is discussed. Point of common coupling (PCC) voltage and DC link voltage are taken as voltage commands for reference signal generation. Sinusoidal pulse width modulation is used to generate the pulses for distribution static compensator (DSTATCOM). Proportional integral (PI) controller is used to control the PCC voltage and DC link voltage of the voltage source converter of DSTATCOM. This improved method is tested for different load conditions using PSCAD/EMTDC package. The improved control strategy is validated by simulation results for linear and non-linear load conditions.

Keywords: distribution static compensator; PI controller; power quality; total harmonic distortion; voltage source converter.

DOI: 10.1504/IJPELEC.2018.090717

International Journal of Power Electronics, 2018 Vol.9 No.2, pp.214 - 228

Received: 20 Jan 2017
Accepted: 08 May 2017
Published online: 27 Mar 2018 *

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