THD Reduction in Multi-Level Inverters based on Multicarrier Pulse Width Modulation Technique
Kishore B1, Senbakaraj2, Periyasamy3, Poongkabilan4
1Kishore B*, AP, EEE, Dr Mahalingam College of Engineering and Technology, India Senbakaraj, Student, Bachelor of Engineering (B.E.),Electrical & Electronics Engineering,
2Dr. Mahalingam College of Engineering & Technology, India.
3Periyasamy A, Student, Bachelor of Engineering (B.E.),Electrical & Electronics Engineering, Dr.Mahalingam College of Engineering & Technology, India
4Poongkabilan Ramasamy, Student, Bachelor of Engineering (B.E.),Electrical & Electronics Engineering, Dr.Mahalingam College of Engineering & Technology, India
Manuscript received on March 28, 2020. | Revised Manuscript received on April 25, 2020. | Manuscript published on April 30, 2020. | PP: 1970-1977 | Volume-9 Issue-4, April 2020. | Retrieval Number: D8994049420/2020©BEIESP | DOI: 10.35940/ijeat.D8994.049420
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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: Due to the advent of technology, electronic equipments are much more sensitive to harmonic and its analysis play an important role whereby reducing the distortion due to harmonics needs attention. To meet the requirements of the industries, harmonic free-high rating power sources are in high demand. Total Harmonic Distortion (THD) is an indicator of AC voltage source quality. In case of inverters, one such way to reduce THD would be the use of Pulse Width Modulation (PWM). The existing methods mainly use the low frequency pulse width modulation techniques for the switching. Control methods employing high frequency switching techniques held in controlling THD with proper application of filters. This paper analyses THD in multilevel inverters using multicarrier PWM technique with five pulse width modulation technique through MATLAB simulations. Finally, a comparison is done to find the less harmonic generated PWM method using fewerfilters.
Keywords: Harmonics, Multilevel Inverter, SPWM, Total Harmonic Distortion