Bipolar and unipolar schemes for confined band variable switching frequency PWM based inverter

Attia, Hussain and Che, Hang Seng and Freddy, Tan Kheng Suan and Elkhateb, Ahmad (2021) Bipolar and unipolar schemes for confined band variable switching frequency PWM based inverter. International Journal of Electrical and Computer Engineering (IJECE), 11 (5). pp. 3763-3771. ISSN 2088-8708, DOI

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The single phase inverter performance through the unipolar and bipolar strategies has been previously analyzed based on the constant switching frequency pulse width modulation (CSFPWM). However, the confined band variable switching frequency PWM (CB-VSFPWM) is currently proposed as a new variable switching frequency PWM technique through unipolar strategy to facilitate the design of high order filter, to reduce the switching losses, and to reduce the current total harmonics distortion (THD) as well. To evaluate the performance of a single phase inverter based on the CB-VSFPWM through bipolar strategy, this paper presents a comparative study of the CB-VSFPWM based inverter performance using the unipolar PWM and the bipolar PWM strategies. The study adopts MATLAB/Simulink to simulate the inverter and to analyze the simulation results in terms of harmonics spectrum, total harmonic distortion (THD), and fundamental components. The analysis of the study results gives an indication about the appropriate type of CB-VSFPWM strategy (unipolar PWM or bipolar PWM) to guarantee the desired performance of the connected inverter in terms of the electrical grid standards like THD, and harmonics spectrum of the inverter current. © 2021 Institute of Advanced Engineering and Science. All rights reserved.

Item Type: Article
Funders: American University of Ras Al Khaimah-UAE, Ministry of Higher Education, Malaysia
Uncontrolled Keywords: Bipolar scheme; Confined band variable switching frequency pulse width modulation; Harmonics spectrum MATLAB/Simulink; Single-phase inverter; Total harmonic distortion; Unipolar scheme
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Deputy Vice Chancellor (Research & Innovation) Office > UM Power Energy Dedicated Advanced Centre
Depositing User: Ms Zaharah Ramly
Date Deposited: 12 Oct 2023 08:59
Last Modified: 12 Oct 2023 08:59

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