Power Quality Measures of Non-Ideal 3-phase Diode Rectifiers and Smoothing Circuits

  • Faraedoon Waly Ahmed Department of Physics, College of Science, University of Halabja-Halabja, Kurdistan Region, Iraq
  • Farhad Muhsin Mahmood Department of Physics, College of Science, University of Halabja-Halabja, Kurdistan Region, Iraq
Keywords: Three phase rectifier, Total Harmonic Distortion (THD), Ripple, Power quality, Capacitive smoothing, DC link inductance

Abstract

The study of the rectifier LC smooth circuit to minimize the total harmonic distortion (THD) of three phase of non-ideal diode rectifier has been proposed. The input line current has a non- sinusoidal shape and contains harmonic, which has a negative effect on the input power quality and it makes much stress on the load. According to the International Electrotechnical Commission (IEC61000) standards, variety harmonic limitations are defined to be regulated. In this paper, the cost effective solutions such as changing different parameters including load resistance, DC capacitance and inductance and input AC inductance, on the rectifier performance in terms of V load mean, ripple, diode and Capacitor RMS current, fundamental current and considering relevant harmonics up to 1 kHz and the load side voltage (mean value and ripple) have been investigated to find a best way to reduce ripple voltage stress and harmonics. It has been founded that the best way to obtain high  mean and fewer ripple is increasing the DC-link Inductance. The major purpose here is to reduce the Total Harmonic Distortion (THD) of the line current under different load conditions (from 61.33% to 26.87%).

References

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Published
2020-10-13
How to Cite
Ahmed, F. and Mahmood, F. (2020) “Power Quality Measures of Non-Ideal 3-phase Diode Rectifiers and Smoothing Circuits”, Zanco Journal of Pure and Applied Sciences, 32(5), pp. 20-25. doi: 10.21271/ZJPAS.32.5.2.
Section
Mathematics ,Physics and Engineering Researches