Hybrid Wind Solar Sources at Distribution Level using New Control Method for Power Quality Improvement
Reshma. Sk1, I. Raghavendar2
1PG Scholar Reshma.Sk, EEE Department, Teegala Krishna Reddy Engineering College, Hyderabad, Andhra Pradesh, India.
2Associate Professor & HOD I.Raghavendar, EEE Department, Teegala Krishna Reddy Engineering College, Hyderabad, Andhra Pradesh, India.

Manuscript received on December 05, 2013. | Revised Manuscript received on December  11, 2013. | Manuscript published on December 15, 2013. | PP: 1-6 | Volume-2 Issue-1, December 2013.| Retrieval Number: A0546122113/2013©BEIESP
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© The Authors. Published By: 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: Electric utilities and end users of electric power are becoming increasingly concerned about meeting the growing energy demand. Seventy five percent of total global energy demand is supplied by the burning of fossil fuels. But increasing air pollution, global warming concerns diminishing fossil fuels and their increasing cost have made it necessary to look towards renewable sources as a future energy solution. Since the past decade, there has been an enormous interest in many countries on renewable energy for power generation. This paper has presented a novel control of an existing grid interfacing inverter to improve the power quality at point of common coupling for a 3-phase 4-wire distributed generation system. The inverter is controlled to perform multifunction device by incorporating active power filter functionality. The grid interfacing inverter can be effectively used to compensate the load reactive power, current unbalance and harmonic distortions in addition to active power injection from renewable energy sources. This enables the grid to supply/receive sinusoidal and balanced power at unity power factor. All these functions may be accomplished either individually or simultaneously. This new method is demonstrated with extensive MATLAB/simulink.
Keywords: Distribution generation (DG), Power quality (PQ), Renewable energy source (RES), Point of common coupling (PCC), Hysteresis Band (HB).