Reduction of Harmonics in Multilevel Inverter using Phase Disposition PWM compared with Conventional PWM based on Efficiency

2022 5th International Conference on Contemporary Computing and Informatics (IC3I) Pub Date : 2022-12-14 DOI:10.1109/IC3I56241.2022.10072518

Mg Balasubramanian, B.T. Geetha

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Abstract

The main aim of this research is to improve the efficiency in a multilevel inverter by reducing the harmonics to get a clear sinusoidal waveform by using novel phase disposition pulse width modulation and compared with the Multilevel inverter with the conventional pulse width modulation. Materials and Methods: A total number of 14 samples are collected by varying the frequencies of the input pulses. These samples are divided into two groups each of 7 samples. Group 1 is novel phase disposition pulse width modulation and group 2 is conventional pulse width modulation. The harmonics were calculated to quantify the performance of the novel Phase Disposition Pulse Width Modulation and conventional pulse width modulation.The G power is taken as 0.8. Results: Multilevel Inverter using the novel Phase Disposition Pulse width modulation has harmonics of 27.47%, and the same for Conventional Pulse Width Modulation is 52.59%. The significance value is 0.235 ($p \gt 0.05$, statistically insignificant). Conclusion: It is observed that novel Phase disposition Pulse width modulation performs better than the Conventional Pulse width modulation in a multilevel inverter for the production of good sinusoidal and reduction of the harmonics based on efficiency.

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基于效率的相位配置PWM与传统PWM在多电平逆变器中的谐波降低比较

本研究的主要目的是为了提高多电平逆变器的效率，通过采用新颖的相位配置脉宽调制来降低谐波，得到清晰的正弦波形，并与传统脉宽调制的多电平逆变器进行了比较。材料与方法:通过改变输入脉冲的频率，共采集14个样品。这些样本被分成两组，每组7个样本。第一组为新型相位配置脉宽调制，第二组为常规脉宽调制。通过计算谐波量来量化新型相位配置脉宽调制和传统脉宽调制的性能。取G幂为0.8。结果:采用新型相位配置脉宽调制的多电平逆变器谐波率为27.47%，传统脉宽调制的多电平逆变器谐波率为52.59%。显著性值为0.235 (p \gt 0.05$，无统计学意义)。结论:在多电平逆变器中，新型相位配置脉宽调制优于传统脉宽调制，可以产生良好的正弦信号，并在效率的基础上降低谐波。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2022 5th International Conference on Contemporary Computing and Informatics (IC3I)

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