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基于谐波磁势平衡的12脉波整流器一体化滤波方法
作者:
作者单位:

1.中国电建集团中南勘测设计研究院有限公司,湖南省 长沙市 410014;2.湖南大学电气与信息工程学院,湖南省 长沙市 410082

作者简介:

通讯作者:

基金项目:

国家自然科学基金资助项目(51477044)。


Integrated Filtering Method of 12-pulse Rectifier Based on Harmonic Magnetic Potential Balance
Author:
Affiliation:

1.Power China Zhongnan Engineering Co., Ltd., Changsha 410014, China;2.College of Electrical and Information Engineering, Hunan University, Changsha 410082, China

Fund Project:

This work is supported by National Natural Science Foundation of China (No. 51477044).

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    摘要:

    提出了一种基于谐波磁势平衡的12脉波整流器一体化滤波方法,对该一体化滤波器的拓扑结构、数学模型、滤波原理进行了详细阐述。该方法将一个背靠背变流装置接入12脉波整流器变压器二次侧的星形与三角形绕组抽头中,通过背靠背变流装置向各绕组抽头中注入指定次谐波电流,并利用该注入谐波电流与12脉波整流器负荷侧所产生谐波电流的磁势平衡,以达到消除12脉波整流器网侧指定次谐波电流的功能,在控制算法上引入比例-积分(PI)+比例-谐振(PR)控制器以实现对指定次谐波分量的无误差跟踪。该方法能有效提高滤波变流装置的电压、电流适应性,从而节省电压匹配变压器的成本,并能充分发挥滤波变流装置的容量潜能。最后,通过仿真和实验验证了所提滤波方法的正确性。

    Abstract:

    A integrated filtering method for 12-pulse rectifier based on harmonic magnetic potential balance is proposed. The topology, mathematical model and filtering principle of the integrated filter are explained in detail. In this method, a back-to-back converter is connected to the tap of star and delta windings on the secondary side of transformer of 12-pulse rectifier. The specific harmonic current components are injected into each winding tap through the back-to-back converter. By using the magnetic potential balance between these harmonic components generated by back-to-back converter and the harmonic components generated by the load side of 12-pulse rectifier, the specific harmonic current components on the grid side of 12-pulse rectifier can be eliminated well. The proportional-integral (PI) + proportional-resonant (PR) controller is adopted to realize error-free tracking of the specific harmonic components. The proposed method can improve the voltage and current adaptability of the filter converter, so the cost of voltage matching transformer can be saved effectively and the capacity potential of filter converter can be used fully. Finally, the correctness of the proposed filtering method is verified by simulation and experiment.

    图1 HMPB-IPF拓扑结构Fig.1 Topological structure of HMPB-IPF
    图2 Yy0与Yd11变压器二次侧电压矢量图Fig.2 Vector diagram of voltage on the secondary sides of Yy0 and Yd11 transformers
    图3 Yd11变压器二次侧绕组等效电路图Fig.3 Equivalent circuit of secondary side winding of Yd11 transformer
    图4 补偿电流生成框图Fig.4 Block diagram of generation of compensation current
    图5 变压器抽头和变流器等效电路图Fig.5 Equivalent circuit diagram of transformer tap and converter
    图6 HMPB-IPF控制策略Fig.6 Control strategy of HMPB-IPF
    图7 仿真电压、电流波形Fig.7 Waveforms of voltage and current in simulation
    图8 仿真谐波含量分析图Fig.8 Harmonic content analysis in simulation
    图9 网侧电流波形Fig.9 Current on grid side
    图10 网侧电流谐波含量分析图Fig.10 Harmonic analysis of current on grid side
    图 抽头端口电压标幺值变化图Fig. The variation diagram of tap voltage (pu)
    图 x,y关系图Fig. The relationship diagram of x and y
    图 电压标幺值与x和y的关系图Fig. The relationship diagram of voltage(pu) and x, y
    图 HMPB-IPF电流控制框图Fig. The current control block figure of HMPB-IPF
    图 电流控制开环传递函数波特图Fig. Bode diagram of open-loop transfer function of current control
    图 变流器输出电流波形图Fig. The current waveform of converter output
    图 变压器各绕组电流波形图Fig. The current waveform of transformer winding
    图 直流侧电容电压波形Fig. Waveform of DC side voltage
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引用本文

王涛,彭国荣,胡隽璇,等.基于谐波磁势平衡的12脉波整流器一体化滤波方法[J/OL].电力系统自动化,http://doi.org/10.7500/AEPS20190808006.
WANG Tao,PENG Guorong,HU Junxuan,et al.Integrated Filtering Method of 12-pulse Rectifier Based on Harmonic Magnetic Potential Balance[J/OL].Automation of Electric Power Systems,http://doi.org/10.7500/AEPS20190808006.

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  • 收稿日期:2019-08-08
  • 最后修改日期:2020-03-09
  • 录用日期:2019-11-18
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