基于瞬时电压矢量定向的有源电力滤波器补偿电流检测

发布时间：2018-01-09 19:39

本文关键词：基于瞬时电压矢量定向的有源电力滤波器补偿电流检测　出处：《电工技术学报》2017年07期 　论文类型：期刊论文

【摘要】：结合电力系统无功补偿与谐波治理的基本原则,对基于瞬时无功功率理论的传统谐波电流检测方法在有源电力滤波器中的应用进行了简要分析,进而提出了以电网电压为参考基准,以实现各种非线性负载及阻感、阻容性负载向纯电阻性负载转换为目的的负载电流波形和相位治理原则,并详细阐述了基于瞬时电压矢量定向的补偿电流检测方法。该方法克服了传统方法在电网电压畸变时补偿后电流不能跟随电网电压波形的不足,避免了有源电力滤波器补偿电流过大及畸变无功功率倒送电网现象的出现,同时该方法具有频率自动跟踪、相序自适应等特点。最后,通过仿真和样机试验验证了该补偿电流检测方法的优越性。
[Abstract]:Combined with the basic principles of reactive power compensation and harmonic control in power system, the application of traditional harmonic current detection method based on instantaneous reactive power theory in active power filter is briefly analyzed. Furthermore, the principle of load current waveform and phase control is put forward to realize the conversion of various nonlinear loads and resistive and resistive loads to pure resistive loads, taking the grid voltage as the reference reference. This method overcomes the shortcoming of the traditional method that the current can not follow the voltage waveform of the power network after compensation when the voltage is distorted. It avoids the phenomenon that the compensation current of active power filter is too large and the distortion of reactive power is inverted. At the same time, the method has the characteristics of frequency automatic tracking and phase sequence adaptive. Finally. The advantages of this method are verified by simulation and prototype test.
【作者单位】：山东建筑大学信息与电气工程学院;山东大学控制科学与工程学院;
【分类号】：TM933.1
【正文快照】： 0引言有源电力滤波器(Active Power Filter,APF)为电网的谐波治理及无功补偿提供了一种有效的手段,其中补偿指令电流检测的实时性和精度对最终的补偿与滤波效果起着决定性的影响[1]。为实现快速、准确地谐波电流检测,国内外学者先后提出了模拟滤波器法、Fryze时域检测法、FFT

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