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| 摘要: |
| 针对有源电力滤波器中广泛采用的基于瞬时无功功率理论的检测技术的局限性,将功率因数的概念引入有源电力滤波器的控制中,提出了基于单位功率因数(UPF)的谐波和无功电流实时检测技术,对其特性进行了分析。该方法电路结构简单、动态响应速度快、检测精度高。通过仿真研究证实了方法的有效性和可行性。 |
| 关键词: 单位功率因数,有源电力滤波器,谐波和无功电流,低通滤波器 |
| DOI： |
| 分类号:TN713.8 |
| 基金项目: |
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| Real time detection approach of harmonic and reactive currents based on UPF |
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ZHANG Hong-lian YUAN Zhao-qiang
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| Abstract: |
| Aimed at the limitation of instantaneous reactive power theory broadly adopted in active po-wer filters,the concept of power factor is introduced into its control system.A harmonic and reactive currents detection technique based on unity power factor is provided and its characteristics are analyzed.The proposed approach,which has simple structure,fast dynamic response speed and high detection precision,is verified effective and feasible with simulation studies. |
| Key words: unity power factor,active power filter,harmonic and reactive currents,low pass filter |
