| 非线性负载谐波电流测量及功率因数的研究 |
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| 引用本文： | 张启林,冯天宝,韩冰,刘艳霞.非线性负载谐波电流测量及功率因数的研究[J].物理实验,2007,27(10):37-39. |
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| 作者姓名： | 张启林 冯天宝 韩冰 刘艳霞 |
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| 作者单位： | 河北北方学院,理学院,河北,张家口,075028 |
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| 基金项目： | 河北省教育厅自然科学基金 |
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| 摘 要： | 对典型单相非线性负载电流的谐波用2种方法进行分析:用余弦脉冲函数式表述出负载电流波形,对此函数式进行积分运算得出有功功率;又用谐波分析仪测量出此电流的10奇次谐波有效值,计算出了电流总谐波畸变率.给出了负载的广义功率因数为位移功率因数与畸变功率因数乘积的结论.指出了传统意义的功率因数与广义功率因数的区别,对谐波畸变率对广义功率因数的影响进行了讨论.
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| 关 键 词： | 谐波 畸变率 功率因数 非线性负载 |
| 文章编号： | 1005-4642（2007）10-0037-03 |
| 修稿时间： | 2007-05-31 |
Measuring the harmonic current and power factor of nonlinear load |
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| ZHANG Qi-lin,FENG Tian-bao,HAN Bing,LIU Yan-xia.Measuring the harmonic current and power factor of nonlinear load[J].Physics Experimentation,2007,27(10):37-39. |
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| Authors: | ZHANG Qi-lin FENG Tian-bao HAN Bing LIU Yan-xia |
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| Institution: | School of Science, Hebei North University, Zhangjiakou 075028, China |
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| Abstract: | Two methods are used to analyze harmonic current of typical signal-phase nonlinear load,the waveform of load current is presented with a cosine pulse function formula,the real power is gotten by integral operation,then the virtual values of 10 odd harmonic components of the current are measured with harmonic wave analyzer,the total distortion rate of harmonic wave of the load current is calculated.The results show that the generalized power factor of load is the product of displacement power factor and distortion power factor.The difference between traditional power factor and the generalized power factor is pointed out,and the influence of harmonic wave distortion rate on generalized power factor is discussed. |
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| Keywords: | harmonic wave distortion rate power factor nonlinear load |
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