Analytical Design of Passive LCL Filter for Three-Phase Two-Level Power Factor Correction Rectifiers
Analytical Design of Passive LCL Filter for Three-Phase Two-Level Power Factor Correction Rectifiers
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DOI：
10.1109/tpel.2017.2705288
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发表时间：
2018-04
影响因子：
6.7
通讯作者：
A. Kouchaki;M. Nymand
中科院分区：
文献类型：
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作者：
A. Kouchaki;M. Nymand
提出了一种三相两电平功率因数校正整流器（PFC）LCL滤波器的综合分析设计方法。高频转换器电流涟漪产生需要相对于电网标准衰减的高频电流谐波。研究每个元件的高频电流，提出了一种设计LCL滤波器的非迭代解决方案。在本文中，转换器的电流涟漪进行了深入的分析，概括的电流涟漪的行为，并找到最大的电流涟漪正弦脉宽调制（PWM）和三次谐波注入PWM。因此，电流涟漪用于基于滤波电容器的最大电荷来准确地确定所需的滤波电容。为了选择网侧电感，研究了两种方法。第一种方法利用阻尼结构将网侧滤波电感表示为变换器电流涟漪的函数。第二种方法的主要目标是降低滤波器的功率损耗和优化网侧滤波电感，该方法采用线路阻抗稳定网络（LISN）实现。据此，设计了两个用于5kW碳化硅基三相PFC的LCL滤波器，并进行了各种实验，以验证滤波器的衰减和性能。
This paper proposes a comprehensive analytical LCL filter design method for three-phase two-level power factor correction rectifiers (PFCs). The high-frequency converter current ripple generates the high-frequency current harmonics that need to be attenuated with respect to the grid standards. Studying the high-frequency current of each element proposes a noniterative solution for designing an LCL filter. In this paper, the converter current ripple is thoroughly analyzed to generalize the current ripple behavior and find the maximum current ripple for sinusoidal pulse width modulation (PWM) and third-harmonic injection PWM. Consequently, the current ripple is used to accurately determine the required filter capacitance based on the maximum charge of the filter capacitor. To choose the grid-side inductance, two methods are investigated. First method uses the structure of the damping to express the grid-side filter inductance as a function of the converter current ripple. Reducing the power loss in the filter and optimizing the grid-side filter inductance is the main focus of the second method which is achieved by employing line impedance stabilization network (LISN). Accordingly, two LCL filters are designed for a 5 kW silicon-carbide-based three-phase PFC. Various experimental scenarios are performed to verify the filters attenuation and performance.