电工技术学报  2015, Vol. 30 Issue (12): 114-119    DOI:
电力电子 |
基于小波PWM调制的逆变器特性分析
郑春芳1,米志红1,张波2,2,sup 张晓慧 sup 2 sup
1. 广州航海学院 广州510515;
2. 华南理工大学 广州 510640
Inverter’s Characteristic Analysis Based on the Wavelet PWM Modulation
Zheng Chunfang1,Mi Zhihong1,Zhang Bo2,Qiu Dongyuan
1. Guangzhou Maritime Institute Guangzhou 510515 China;
2. South China University of Technology Guangzhou 510640 China
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摘要 本文介绍了基于非二进制离散小波分辨率分析的小波PWM调制原理和实现方法,分析并给出了小波PWM调制中不同参数对逆变器输出性能的影响,有利于选择合理的参数.并利用谐波消除的原理,通过具体算例将小波PWM调制与SPWM技术进行比较,仿真和实验结果表明,小波PWM调制具有数字化算法实现更简单,电压利用率更高,谐波总畸变率(THD)更小的优点,但是输出电压调节范围更小以及对低次谐波的抑制能力更差,为小波PWM调制更有效的实际应用提供了理论依据.
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关键词 逆变器小波调制SPWM    
Abstract:This paper presents the principle and implementation of the wavelet PWM(WPWM)technique based on dyadic-type multi-resolution analyses (MRAs) for single-phase inverters, analyzes and gives the inverter’s output features at different parameters based on WPWM technique, which is beneficial to choose suitable parameters. Then, according to the harmonic eliminating principle, compares WPWM with SPWM technique by some specific examples. The simulation and experimental results show that WPWM can get simpler realization by digital algorithm, higher fundamental component magnitudes and lower THD factors, but the range of fundamental component magnitude is smaller and the ability of eliminating lower harmonics is worse, which provide theoretical basis for the application of the WPWM efficiently in practice.
Key wordsInverters    Wavelet Modulation    SPWM   
收稿日期: 2015-03-25      出版日期: 2015-09-14
PACS: TM464  
基金资助:国家自然科学基金重点项目(51437005)和国家自然科学基金项目(51277079)
作者简介: 郑春芳 女,1978年出生,博士,从事电力电子及电力传动技术的研究.米志红 女,1971年出生,硕士,从事电力电子及电力传动技术的研究.
引用本文:   
郑春芳,米志红,张波,2,sup 张晓慧 sup 2 sup. 基于小波PWM调制的逆变器特性分析[J]. 电工技术学报, 2015, 30(12): 114-119. Zheng Chunfang,Mi Zhihong,Zhang Bo,Qiu Dongyuan. Inverter’s Characteristic Analysis Based on the Wavelet PWM Modulation. Transactions of China Electrotechnical Society, 2015, 30(12): 114-119.
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