Phase-Shifting Transformer Combined with the Novel SHEPWM for Harmonics Reduction in Medium-Voltage Inductive Loads
Hussain Bierk1, Fawzi Mustafa2, Baraa M. Albaker3
1Hussain Bierk, College of Engineering, Al-Iraqia University, Baghdad, Iraq.
2Fawzi Mustafa, College of Engineering, Al-Iraqia University, Baghdad, Iraq.
3Baraa M. Albaker, College of Engineering, Al-Iraqia University, Baghdad, Iraq.
Manuscript received on 16 October 2019 | Revised Manuscript received on 22 October 2019 | Manuscript Published on 02 November 2019 | PP: 409-413 | Volume-8 Issue-2S9 September 2019 | Retrieval Number: B10930982S919/2019©BEIESP | DOI: 10.35940/ijrte.B1093.0982S919
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: In this paper, a novel approach is proposed to reduce the impact of harmonics in the high-power medium-voltage squirrel-cage induction motor. An inverter with a minimum switching frequency is required for this load type to reduce the snubber and switching losses. Phase-shifting transformer is selected as an interface between the three-phase supply and the inverter. This is to reduce the impact of low order harmonics and consequently reducing total harmonic distortion (THD). Selective harmonic-elimination pulse width modulation (SHEPWM) is employed as a control technique in the inverter to eliminate specific low-order harmonics. Thereby, many low order harmonics are reduced further. By this way the THD of the system is reduced significantly and consequently the better and cleaner energy is obtained. In this research, PSpice simulation verified by MATLAB is used to estimate the harmonics content of the currents in high-power medium voltage induction motor.
Keywords: High-Power Induction Motor; High-Power Inverters; Low Frequency Switching Inverters; Phase-Shifting Transformers; SHEPWM.
Scope of the Article: Frequency Selective Surface