| 基于LCL滤波的逆变器并网电流控制策略研究 |
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| 引用本文： | 韩咏如,薛士龙,邓勇智.基于LCL滤波的逆变器并网电流控制策略研究[J].电源学报,2014,12(1):103-109. |
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| 作者姓名： | 韩咏如 薛士龙 邓勇智 |
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| 作者单位： | 上海海事大学物流工程学院,上海海事大学物流工程学院,上海海事大学物流工程学院 |
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| 摘 要： | LCL滤波器不仅电感量小,而且具有良好的高频衰减特性。但LCL滤波器为三阶系统,虽然能有效抑制并网电流中高次谐波电流,但却带来谐振问题。谐振问题对逆变器的控制策略提出较高要求。采用逆变器的逆变侧电流和并网侧电流双闭环控制方法,对基于PI调节和一种新型准PR(准比例谐振)调节的有源阻尼控制法进行建模及仿真。仿真结果表明,这种新型准PR调节的逆变侧和并网侧电流双闭环控制策略具有谐振抑制能力强、动态响应快等优点。
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| 关 键 词： | LCL滤波 并网逆变器 新型准PR调节 电流双闭环控制 |
| 收稿时间： | 2013/10/21 0:00:00 |
| 修稿时间： | 2013/12/5 0:00:00 |
Current Control Strategies for the Grid-connected Inverter with LCL Filter |
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| HAN Yong-ru,XUE Shi-long and DENG Yong-zhi.Current Control Strategies for the Grid-connected Inverter with LCL Filter[J].Journal of power supply,2014,12(1):103-109. |
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| Authors: | HAN Yong-ru XUE Shi-long and DENG Yong-zhi |
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| Affiliation: | Logistics Engineering College, Shanghai Maritime University,Logistics Engineering College, Shanghai Maritime University and Logistics Engineering College, Shanghai Maritime University |
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| Abstract: | LCL-filter has a good high frequency attenuation characteristics with only a small inductance. The LCL filter is a third-order system, it can effectively restrain the grid-connected high harmonic current, but can also lead to a resonance peak. This paper taking the inverter side and grid side current double closed loop control method, modeled and simulated with PI and PR damping control method . Simulation results show that the inverter side and grid side current closed loop with the PR control strategy has a better harmonic suppression, and a quick dynamic response. |
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| Keywords: | LCL-filter Grid-connected Inverter PR control strategy |
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