A New LC L-Filter With In-Series Parallel Resonant Circuit for Single-Phase Grid-Tied Inverter

被引：72

作者：

Wu, Weimin ^{[1
]}

Sun, Yunjie ^{[1
]}

Lin, Zhe ^{[1
]}

Tang, Tianhao ^{[1
]}

Blaabjerg, Frede ^{[2
]}

Chung, Henry Shu-Hung ^{[1
,3
]}

机构：

[1] Shanghai Maritime Univ, Res Inst Elect Automat, Shanghai 201306, Peoples R China

[2] Aalborg Univ, Dept Energy Technol, DK-9220 Aalborg, Denmark

[3] City Univ Hong Kong, Ctr Smart Energy Convers & Utilizat Res, Kowloon, Hong Kong, Peoples R China

来源：

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 2014年 / 61卷 / 09期

关键词：

Common-mode noise; differential-mode noise; electromagnetic interference (EMI); harmonic current; LCL-filter; parallel LC resonant circuit; stiff grid;

D O I：

10.1109/TIE.2013.2293703

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

When designing a higher order output power filter for a transformerless grid-tied converter using pulsewidth modulation (PWM), the requirements on the leakage current, the electromagnetic interference (EMI) noise, and the harmonics of the grid-injected current should be addressed. For an LCL-filter-based single-phase grid-tied full-bridge inverter system, it is possible to decrease the total inductance as well as the size and the cost, if the harmonic currents around the switching frequency can be fully suppressed. In this paper, the grid-injected current harmonics and the conducted EMI noise are investigated for the conventional LCL-filter-based system. Based on this, a modified LCL-filter topology using an extra parallel LrCr resonant circuit is proposed to reduce the total inductance value, without increasing the capacitive reactive power. The validity is verified through the experiments on a 500-W 110-V/50-Hz prototype.

引用

页码：4640 / 4644

页数：5

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