| 基于共模电流频谱能量的共模干扰抑制研究 |
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| 引用本文： | 章勇高,高彦丽,龙立中. 基于共模电流频谱能量的共模干扰抑制研究[J]. 河南科技大学学报(自然科学版), 2011, 32(3): 34-38,110 |
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| 作者姓名： | 章勇高 高彦丽 龙立中 |
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| 作者单位： | 华东交通大学,电气与电子工程学院,江西南昌330013 |
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| 基金项目： | 国家自然科学基金项目(50407011); 江西省科技厅科技攻关项目(2010ZDG02400) |
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| 摘 要： | 在电力电子装置中不存在两个互补对称共模噪声源时,可以采用外加补偿电路的有源并联共模电磁干扰抑制技术。分析了补偿电路与被补偿桥臂的PWM信号传输时间差对共模电磁干扰抑制效果的影响。分析了共模电流频谱最大值、频谱平均值和频谱能量3种评估指标的特点与计算,并仿真研究了它们与传输时间差之间的关系。说明了共模电流频谱能量是一个理想的快速评估共模电流大小的指标。采用DSP建立了数字化并联有源共模EMI抑制的单相半桥逆变器物理实验模型,实验结果表明了共模电流频谱能量评估的有源并联共模电磁干扰抑制技术的正确性和有效性。
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| 关 键 词： | 共模干扰抑制 频谱能量 频谱最大值 频谱平均值 |
Common Mode Suppression Based on Common Mode Currenct Spectrum Energy |
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| ZHANG Yong-Gao,GAO Yan-Li,LONG Li-Zhong. Common Mode Suppression Based on Common Mode Currenct Spectrum Energy[J]. Journal of Henan University of Science & Technology:Natural Science, 2011, 32(3): 34-38,110 |
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| Authors: | ZHANG Yong-Gao GAO Yan-Li LONG Li-Zhong |
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| Affiliation: | ZHANG Yong-Gao,GAO Yan-Li,LONG Li-Zhong (School of Electrical & Electronics Engineering,East China Jiaotong University,Nanchang 330013,China) |
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| Abstract: | An active compensatory common mode EMI suppression technique with an external compensating circuit can be used at the conditions without two complementary common mode noise sources.In active parallel compensatory common mode EMI suppression,whether PWM signals transmission delay of compensating circuit and main bridge are the same or not will impact the effect of common mode current suppression.The three evaluation indexes of maximal spectrum,average spectrum and common mode spectrum energy were proposed to... |
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| Keywords: | Common mode suppression Spectrum energy Maximal spectrum Average spectrum |
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