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http://dx.doi.org/10.6113/JPE.2016.16.4.1407

An Improved Wavelet PWM Technique with Output Voltage Amplitude Control for Single-phase Inverters  

Zheng, Chun-Fang (Department of Shipbuilding Engineering, Guangzhou Maritime Institute)
Zhang, Bo (Department of Electric Power, South China University of Technology)
Qiu, Dong-Yuan (Department of Electric Power, South China University of Technology)
Zhang, Xiao-Hui (Department of Electric Power, South China University of Technology)
Li, Rui (Department of Shipbuilding Engineering, Guangzhou Maritime Institute)
Publication Information
Journal of Power Electronics / v.16, no.4, 2016 , pp. 1407-1414 More about this Journal
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;
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Times Cited By KSCI : 2  (Citation Analysis)
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