| 三相逆变器幅值可控的小波PWM技术 |
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| 引用本文： | 张晓慧,丘东元,张波,郑春芳.三相逆变器幅值可控的小波PWM技术[J].电源学报,2017,15(3):78-85. |
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| 作者姓名： | 张晓慧 丘东元 张波 郑春芳 |
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| 作者单位： | 华南理工大学电力学院, 广州 510640,华南理工大学电力学院, 广州 510640,华南理工大学电力学院, 广州 510640,广州航海学院船舶与海洋工程学院, 广州 510515 |
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| 基金项目： | 国家自然科学基金资助项目（51277079） |
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| 摘 要： | 三相逆变器的小波PWM具有总谐波含量低、直流电压利用率高、易于数字化实现等优点,但其无法在三相逆变器上实现对输出电压幅值的控制,这使得小波PWM的应用受到限制。为此,在单相逆变器幅值可控的小波PWM技术基础上,在三相逆变器的小波PWM中同样引入了一个调制度变量,使它在保持原有优点的基础上增加了输出电压可调的特性。分析了三相逆变器幅值可控的小波PWM的机理,并进行了仿真和实验研究,结果证明了机理的正确性,为三相逆变器小波PWM的广泛应用提供了基础。
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| 关 键 词： | 小波PWM 调制度 三相逆变器 总谐波畸变率 |
| 收稿时间： | 2017/4/5 0:00:00 |
| 修稿时间： | 2017/5/8 0:00:00 |
An Amplitude-controllable Wavelet PWM Technique for Three-phase Inverter |
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| ZHANG Xiaohui,QIU Dongyuan,ZHANG Bo and ZHENG Chunfang.An Amplitude-controllable Wavelet PWM Technique for Three-phase Inverter[J].Journal of power supply,2017,15(3):78-85. |
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| Authors: | ZHANG Xiaohui QIU Dongyuan ZHANG Bo and ZHENG Chunfang |
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| Affiliation: | School of Electric Power, South China University of Technology, Guangzhou 510640, China,School of Electric Power, South China University of Technology, Guangzhou 510640, China,School of Electric Power, South China University of Technology, Guangzhou 510640, China and School of Naval Architecture and Ocean Engineering, Guangzhou Maritime Institute, Guangzhou 510515, China |
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| Abstract: | Wavelet PWM technique for three-phase inverter has the advantages of low total harmonic distortion(THD), high dc voltage utilization ratio and simple digital implementation. However, it cannot control the amplitude of output voltage, which limits the application of wavelet PWM. Thus, this paper introduces a modulation ratio to wavelet PWM for three-phase inverter on the basis of amplitude-controllable wavelet PWM technique for single-phase inverter. The proposed amplitude-controllable wavelet PWM for three-phase inverter can not only maintain the advantage of the original wavelet PWM, but also adjust the amplitude of output voltage flexibly. This paper analyses the mechanism of amplitude-controllable wavelet PWM, and then carries out the simulation and experimental verification. Finally, the mechanism of the proposed method has been proved, which provides the foundation for the wide applications of wavelet PWM. |
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| Keywords: | wavelet PWM modulation ratio three-phase inverter total harmonic distortion(THD) |
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