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An Improved Wavelet PWM Technique with Output Voltage Amplitude Control for Single-phase Inverters
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  • Journal title : Journal of Power Electronics
  • Volume 16, Issue 4,  2016, pp.1407-1414
  • Publisher : The Korean Institute of Power Electronics
  • DOI : 10.6113/JPE.2016.16.4.1407
 Title & Authors
An Improved Wavelet PWM Technique with Output Voltage Amplitude Control for Single-phase Inverters
Zheng, Chun-Fang; Zhang, Bo; Qiu, Dong-Yuan; Zhang, Xiao-Hui; Li, Rui;
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 Abstract
Unlike existing pulse-width modulation (PWM) techniques, such as sinusoidal PWM and random PWM, the wavelet PWM (WPWM) technique based on a Harr wavelet function can achieve a high fundamental component for the output voltage, low total harmonic distortion, and simple digital implementation. However, the original WPWM method lacks output voltage control. Thus, the practical application of the WPWM technique is limited. This study proposes an improved WPWM technique that can regulate output voltage amplitude with the addition of a parameter. The relationship between the additional parameter and the output voltage amplitude is analyzed in detail. Experimental results verify that the improved WPWM exhibits output voltage control in addition to all the merits of the WPWM technique.
 Keywords
Inverter;Total harmonic distortion (THD);Voltage modulation ratio;Wavelet modulation;
 Language
English
 Cited by
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