A proposal of a 3.3‐kV/6.6‐kV transformerless hybrid filter, and experimental verification based on a 200‐V laboratory system
A proposal of a 3.3‐kV/6.6‐kV transformerless hybrid filter, and experimental verification based on a 200‐V laboratory system
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3.3kV/6.6kV无变压器混合滤波器的提案以及基于200V实验室系统的实验验证
DOI：
10.1002/eej.10236
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发表时间：
2004
影响因子：
0.4
通讯作者：
H. Akagi
中科院分区：
文献类型：
--
作者：
S. Srianthumrong;Y. Tamai;H. Akagi
本文提出了一种无变压器并联混合滤波器，用于三相六脉冲二极管整流器的谐波补偿，其中交流线间电压为 3.3 或 6.6 kV。该混合滤波器由每相一个单调谐 LC 滤波器和一个直流电容器电压低至 300 或 600 V 的有源滤波器组成。两个滤波器直接相互串联，无需变压器。无源滤波器吸收整流器产生的谐波电流，而有源滤波器改善无源滤波器的滤波特性。有源滤波器所需的额定值比单独使用的传统并联有源滤波器小得多。另一个优点是有源滤波器不需要额外的开关纹波滤波器，因为 LC 滤波器不仅充当七次谐波频率附近的调谐 LC 滤波器，而且还充当 10 kHz 左右的开关纹波滤波器。还提出了前馈控制方案来提高有源滤波器的性能。从 200V、5kW 实验室系统获得的实验结果和 3.3kV、300kW 系统的仿真结果证实了该系统的有效性和有效性。该混合滤波器给出了令人满意的补偿性能，从而使我们能够将其投入实际使用。 © 2003 Wiley periodicals, Inc. Electr Eng Jpn, 146(2): 54–65, 2004；在线发表于 Wiley InterScience (www.interscience.wiley.com)。 DOI 10.1002/eej.10236
This paper proposes a transformerless shunt hybrid filter for harmonic compensation of a three‐phase six‐pulse diode rectifier, where the AC line‐to‐line voltage is 3.3 or 6.6 kV. The hybrid filter consists of a single tuned LC filter per phase and an active filter with a DC capacitor voltage as low as 300 or 600 V. The two filters are directly connected in series with each other without a transformer. The passive filter absorbs harmonic currents produced by the rectifier, whereas the active filter improves the filtering characteristics of the passive filter. The required rating of the active filter is much smaller than that of a conventional shunt active filter used alone. Another advantage is that no additional switching‐ripple filter is required for the active filter because the LC filter acts not only as a tuned LC filter around the seventh‐harmonic frequency but also as a switching‐ripple filter around 10 kHz. A feedforward control scheme is also proposed to improve the active filter performance. Experimental results obtained from a 200‐V, 5‐kW laboratory system and simulation results of a 3.3‐kV, 300‐kW system confirm the validity and effectiveness of the system. The hybrid filter gives satisfactory compensation performance, thus allowing us to put it into practical use. © 2003 Wiley Periodicals, Inc. Electr Eng Jpn, 146(2): 54–65, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/eej.10236