A hybrid damping method for LLCL-filter based grid-tied inverter with a digital filter and an RC parallel passive damper

Weimin Wu, Zhe Lin, Yunjie Sun, Xiongfei Wang, Min Huang, Huai Wang, Frede Blaabjerg, Henry Shu-hung Chung

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

6 Citations (Scopus)
385 Downloads (Pure)

Abstract

Grid-tied inverters have been widely used to inject the renewable energies into the distributed power generation systems. However, a large variation of the grid impedance challenges the stability of the high-order power filter based grid-tied inverter. Many passive and active damping methods have been proposed to overcome this issue. Recently, a composite passive damping method for a high-order power filter based grid-tied inverter with an RC parallel damper and an RL series damper was presented to eliminate this problem, but at the cost of more material and power losses. In this paper, a hybrid damping method with a digital filter and an RC parallel damper is proposed. The design of the digital filter is developed using a normalized method. The validity is verified through the simulations and the experiments on a 500 W, 110 V/50 Hz prototype, while the grid inductance varies from 0.15 mH to 5 mH.
Original languageEnglish
Title of host publicationProceedings of the IEEE Energy Conversion Congress and Exposition, ECCE 2013
Number of pages8
PublisherIEEE Press
Publication date2013
Pages456-463
ISBN (Print)978-1-4799-0336-8
ISBN (Electronic)978-147990335-1
DOIs
Publication statusPublished - 2013
Event5th IEEE Energy Conversion Congress & Expo, ECCE 2013 - Denver, Colorado, United States
Duration: 15 Sep 201319 Sep 2013

Conference

Conference5th IEEE Energy Conversion Congress & Expo, ECCE 2013
CountryUnited States
CityDenver, Colorado
Period15/09/201319/09/2013

Fingerprint Dive into the research topics of 'A hybrid damping method for LLCL-filter based grid-tied inverter with a digital filter and an RC parallel passive damper'. Together they form a unique fingerprint.

Cite this