| 一种三电平光伏并网逆变器SVPWM的优化算法 |
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| 引用本文： | 文家燕,刘胜永,袁海英,邵章平.一种三电平光伏并网逆变器SVPWM的优化算法[J].广西工学院学报,2013(4):31-36. |
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| 作者姓名： | 文家燕 刘胜永 袁海英 邵章平 |
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| 作者单位： | [1]广西科技大学电气与信息工程学院,柳州545006 [2]合肥工业大学电气与自动化工程学院,合肥230009 |
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| 基金项目： | 广西高校科学技术研究立项项目（2013LX083）；广西工学院科学基金（1166203） |
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| 摘 要： | 三电平逆变器具有耐压等级高、谐波含量低、开关损耗小等优点，应用于光伏并网发电领域能提高系统的容量和效率，但是其空间矢量调制（SVPWM）存在运算复杂、实现困难等问题.文章介绍了三电平光伏并网逆变器的主电路结构和工作原理，并针对其SVPWM算法的复杂性，提出一种三电平SVPWM的简易算法，将三相正弦调制波修正到两电平下，利用零序分量注入法实现两电平下的SVPWM调制并反修正到三电平，使得运算量大为化简.搭建10kW三电平光伏并网逆变器实验平台，实验结果证明了本文提出的简易调制策略的正确性.
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| 关 键 词： | 三电平 并网逆变器 空间矢量调制 零序分量 |
An Optimized SVPWM Algorithm for Three-Level Photovoltaic Grid-connected Inverter |
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| WEN Jiayan,LIU Shengyong,YUAN Haiying,SHAO Zhangping.An Optimized SVPWM Algorithm for Three-Level Photovoltaic Grid-connected Inverter[J].Journal of Guangxi University of Technology,2013(4):31-36. |
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| Authors: | WEN Jiayan LIU Shengyong YUAN Haiying SHAO Zhangping |
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| Affiliation: | 2 ( 1.College of Electronic and Information Engineering ,Guangxi University of Science and Technology, Liuzhou 545006 ,China.2.School of Electrical Engineering and Automation, Hefei University of Technology, Hefei Anhui 230009, China ) |
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| Abstract: | Three-level inverter promotes the virtues of high stress level, low voltage distortion, low harmonic content, and increases the capacity and efficiency of PV system. However, three-level SVPWM is complex and hard to implement. In this paper topology structure and principle of three-level photovohaic grid-connected inverter are introduced. Then, according to the complexity of three-level SPWM, a simple SVPWM algorithm is proposed, which corrects three phase sine modulation waves to two level, and makes the calculation simple. A three-level photovoltaic grid-connected inverter rated 10kW is built, and experimental results demonstrate the correctness of the simple algorithm. |
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| Keywords: | three-level grid-connected inverter SVPWM zero-sequence component |
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