| 基于新过采样方法的APF电流THD测量 |
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| 引用本文： | 洪磊,谢川,李玉玲,陈国柱. 基于新过采样方法的APF电流THD测量[J]. 电力电子技术, 2011, 45(1): 96-98 |
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| 作者姓名： | 洪磊 谢川 李玉玲 陈国柱 |
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| 作者单位： | 浙江大学电气工程学院; |
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| 基金项目： | 国家自然科学基金项目(50707030)~~ |
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| 摘 要： | 电流总谐波畸变率(THD)是有源电力滤波器(APF)的一项重要性能指标,工业现场一般要求APF补偿后电流THD<5%ao实验发现A/D转换引入的噪声对THD测量影响极大,其误差可达200%,不能满足应用要求.针对大功率电力电子装置采样频率低和THD测量对采样信号信噪比要求高的特点,提出一种新的过采样方法,对其进行原理分...
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| 关 键 词： | 有源电力滤波器 总谐波畸变率 过采样 信噪比 |
The Current THD Measurement of Active Power Filter Based on a Novel Over-sampling Method |
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| HONG Lei,XIE Chuan,LI Yu-ling,CHEN Guo-zhu. The Current THD Measurement of Active Power Filter Based on a Novel Over-sampling Method[J]. Power Electronics, 2011, 45(1): 96-98 |
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| Authors: | HONG Lei XIE Chuan LI Yu-ling CHEN Guo-zhu |
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| Affiliation: | HONG Lei,XIE Chuan,LI Yu-ling,CHEN Guo-zhu(Zhejiang University,Hangzhou 310027,China) |
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| Abstract: | The current THD is an important index of active power filter(APF),it need that the THD is less than 5% after the compensation of APF.In practice,a variety of noise affects the THD value,during the A/D conversion,the maximum error of THD measurement can be 200%,which can not satisfy the need in industry application.As high power electronics equipment usually has low switching frequency,and the signal to noise ratio is indispensable in the THD calculation,a novel over-sampling method is presented.The theory i... |
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| Keywords: | active power filter total harmonic distortion over-sampling signal to noise ratio |
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