改进的PWM技术改善多电平逆变器的总谐波失真

2016 9th International Conference on Electrical and Computer Engineering (ICECE) Pub Date : 2016-12-01 DOI:10.1109/ICECE.2016.7853970

Shuvankar Podder, M. Biswas, M. R. Khan

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引用次数: 13

摘要

在本研究中，提出了一种改进的载波来产生PWM门控信号。与传统的三角载波PWM相比，该方法可将逆变器输出电压的总谐波失真(THD)降低5.8%。将所提出的PWM技术应用于逆变器后，输出电压中的主要谐波分量幅度较小。在所有调制指标和频率比下，该方法的输出电压基元分量也较高。针对单相4单元9电平级联h桥MLI，通过MATLAB仿真对改进载波PWM的性能进行了评价。

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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A modified PWM technique to improve total harmonic distortion of Multilevel Inverter

In this study, a modified carrier is proposed to generate PWM gating signal. Proposed PWM method reduces total harmonic distortion (THD) of the output voltage of inverter up to 5.8% than the traditional triangular carrier based PWM. Major harmonic components in output voltage are less in magnitude when proposed PWM technique is applied to inverter. Fundamental component of output voltage is also higher in proposed PWM method for all modulation index and frequency ratio. Performance of proposed modified carrier based PWM is evaluated by MATLAB simulation for single phase 4-cells 9-levels cascaded H-bridge MLI.

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2016 9th International Conference on Electrical and Computer Engineering (ICECE)

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