Voltage Harmonics Mitigation through Hybrid Active Power Filer

  • Anwar Ali Sahito Assistant Professor, Department of Electrical Engineering, Mehran University Engineering and Technology, Jamshoro
  • Shah Murad Tunio Assistant Professor, Department of Electrical Engineering, Mehran University Engineering and Technology, Jamshoro
  • Arbab Nighat Khizer Assistant Professor, Department of Electronics Engineering, Mehran University Engineering and Technology, Jamshoro.

Abstract

Fast dynamic response, high efficiency, low cost and small size of power electronic converters have exponentially increased their use in modern power system which resulted in harmonically distorted voltage and currents. Voltage harmonics mainly caused by current harmonics are more dangerous as performance and expected operating life of other power system equipment are affected by harmonically distorted supply voltage. Electronic filter circuits are used to improve system power quality by mitigating adverse effects of harmonics. Hybrid filters having advantages of both passive and active filters are preferred to resolve the problem of harmonics efficiently and avoiding any chance of resonance. In this paper, a three phase three wire network is considered to supply an adjustable speed drive represented by a resistive load connected across a three phase bridge rectifier. Simulation of the considered system shows THD (Total Harmonic Distortion) of 18.91 and 7.61% in supply current and voltage respectively. A HAPF (Hybrid Active Power Filter) is proposed to reduce these THD values below 5% as recommended by IEEE Standard-519. P-Q theorem is used to calculate required parameters for proposed filter, which is implemented through hysteresis control. Simulation results confirm the effectiveness of the designed filter as THD for both current and voltage have reduced below allowable limit of 5%.

Published
Jan 1, 2016
How to Cite
SAHITO, Anwar Ali; TUNIO, Shah Murad; KHIZER, Arbab Nighat. Voltage Harmonics Mitigation through Hybrid Active Power Filer. Mehran University Research Journal of Engineering and Technology, [S.l.], v. 35, n. 1, p. 101-110, jan. 2016. ISSN 2413-7219. Available at: <https://publications.muet.edu.pk/index.php/muetrj/article/view/655>. Date accessed: 29 mar. 2024. doi: http://dx.doi.org/10.22581/muet1982.1601.11.
This is an open Access Article published by Mehran University of Engineering and Technolgy, Jamshoro under CCBY 4.0 International License