A Novel Power Conditioning Unit (PCU) using Adaptive Signal Processing for Low THD
Debanjan Mukherjee1, Asim Kumar Jana2, Malay Kumar Pandit3
1Debanjan Mukherjee, Electronics & Comm. Engg. Haldia Institute Of Technology, Haldia, East Midnapore, India.
2Asim K. Jana, Electronics & Comm. Engg. Haldia Institute Of Technology, Haldia, East Midnapore, India.
3Malay K. Pandit, Electronics & Comm. Engg. Haldia Institute Of Technology, Haldia, East Midnapore, India.
Manuscript received on September 21, 2012. | Revised Manuscript received on October 05, 2012. | Manuscript published on October 30, 2012. | PP: 62-68 | Volume-2 Issue-1, October 2012. | Retrieval Number: A0729092112 /2012©BEIESP
Open Access | Ethics and Policies | Cite
© 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: The presence of harmonic in power system is a major concern to power engineers. With the heavy usage of non-linear loads in power systems, the harmonic effect becomes more serious. One of the most popular computation algorithms for harmonic analyzer is Fast Fourier Transform (FFT). In this paper ,single phase current waveform is taken from a three phase supply fed to motor through power analyzer interfaced with PC. FFT is done using MATLAB program on the imported data. After that, same waveform like the current waveform obtained from the hardware setup is created in MATLAB SIMULINK window. That created waveform is filtered by Normalized LMS Filter to reduce Total Harmonic Distortion (THD) in the filtered output. Comparison is done between the hardware results with the software simulated results. THD value is reduced from at max 12.03% to at min 0.17%, which has set a new record to our best knowledge.
Keywords: FFT, SIMULINK, NLMS Filter, Total Harmonic Distortion (THD).