文章基本信息

标题：Bipolar and unipolar schemes for confined band variable switching frequency PWM based inverter
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作者：Hussain Attia ; Hang Seng Che ; Tan Kheng Suan Freddy 等
期刊名称：International Journal of Electrical and Computer Engineering
电子版ISSN：2088-8708
出版年度：2021
卷号：11
期号：5
页码：3763-3771
DOI：10.11591/ijece.v11i5.pp3763-3771
语种：English
出版社：Institute of Advanced Engineering and Science (IAES)
摘要：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 CBVSFPWM 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.
关键词：bipolar scheme;confined band variable switching frequency pulse width modulation (CB-VSFPWM);harmonics spectrum;MATLAB/simulink;single-phase inverter;total harmonic distortion;unipolar scheme