| 基于瞬时功率理论的逆变器直流侧谐波电流预测方法研究 |
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| 引用本文： | 李闯,赵红林.基于瞬时功率理论的逆变器直流侧谐波电流预测方法研究[J].船电技术,2015(12):15-18. |
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| 作者姓名： | 李闯 赵红林 |
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| 作者单位： | 1. 海军驻712所军代室,武汉,430064;2. 武汉船用电力推进装置研究所,武汉,430064 |
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| 摘 要： | 通过分析逆变器不同开关模式下的直流网侧瞬时功率与输出瞬时功率的关系,得到逆变器直流输入瞬时功率与输出瞬时功率守恒的结论;采用双重傅里叶积分的方法分析了逆变器输出功率的频谱表达式;根据输入和输出功率守恒的结论,计算了直流侧谐波电流。用仿真软件对上述理论分析结论的精确性进行了验证,该方法可有效预测逆变器直流侧谐波电流。
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| 关 键 词： | 瞬时功率 逆变器 直流 谐波 |
Prediction Methods of the DC Side Harmonic Current in Inverter Based on Instantaneous Power Theory |
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| Abstract: | By analyzing the relationship between DC input instantaneous power and the output instantaneous power in different switching mode, the paper gets the conclusion that the DC input instantaneous power ais conservative to the output instantaneous power. Double Fourier method is used to get the spectrum expression of the output power in the inverter. The harmonic current in DC side is calculated by using the relationship of input and output power. Simulation software is used to prove the theoretical analysis. This method can be used to predict the harmonic current in DC side. |
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| Keywords: | instantaneous power inverter DC-current harmonic current |
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