| 分布式发电系统并网电流控制 |
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| 引用本文： | 陈哲照,沈 宏,阮 涛,张增强. 分布式发电系统并网电流控制[J]. 电网与水力发电进展, 2008, 24(11): 16-19 |
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| 作者姓名： | 陈哲照 沈 宏 阮 涛 张增强 |
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| 作者单位： | 广西电力工业勘察设计研究院，南宁 530023;河南科技学院，河南 新乡 453003;邢台供电局，河北 邢台 540001;西安理工大学，西安 710048 |
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| 摘 要： | 在分布式发电并网发电系统中．需要对并网电流进行控制并达到输出功率因数为1的目的。分析了4种常用的输出电流控制方法，比较了其优缺点。针对并网逆变器功率开关频率较高、并网电流谐波总畸变率过大的问题，提出了一种改进的正弦电流滞环宽度控制方法。该法具有倍频控制效果．可以减少功率开关管的损耗，提高系统的稳定性；在降低输出系统电流谐波方面，有利于提高系统的稳定性和运行效率。
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| 关 键 词： | 分布式发电 电流控制 开关频率 谐波总畸变率 |
Grid-Connected Current Control for Distributed Generation System |
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| CHEN Zhe-zhao,SHEN Hong,RUAN Tao,ZHANG Zeng-qiang. Grid-Connected Current Control for Distributed Generation System[J]. Advance of Power System & Hydroelectric Engineering, 2008, 24(11): 16-19 |
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| Authors: | CHEN Zhe-zhao SHEN Hong RUAN Tao ZHANG Zeng-qiang |
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| Affiliation: | 1.Guangxi Electric Power Industry Investigation Design and Research Institute;Nanning 530023;China;2.Henan Institute of Science and Technology;Xinxiang 453003;Henan Province;3.Xingtai Power Supply Bureau;Xingtai 540001;Hebei Province;4.Xi'an University of Technology;Xi'an 710048;China |
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| Abstract: | In the distributed generation system,the grid-connected current need to control for ensuring the power factor 1.This paper compares and analyzes four existing current control methods,points out their advantages and weaknesses.In order to solve the problems of higher switching frequency and bigger total harmonic distortion of system current,this paper proposes a new current control method with three -level hysteresis -band sine current control.The control method makes frequency doubling,reduces switching fre... |
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| Keywords: | distributed generation current control switching frequency total harmonic distortion |
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