Journal
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
Volume 50, Issue 2, Pages 1225-1232Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIA.2013.2274612
Keywords
Filter; harmonics; inverter; power quality; pulsewidth-modulated (PWM) inverters
Funding
- Petroleum Institute
- Abu Dhabi
- United Arab Emirates
- Center of Advanced Control of Energy and Power Systems at the Colorado School of Mines
- U.S. National Science Foundation [0931748]
- Cyber-Physical System Cyber-Enabled Efficient Energy Management of Structures
- Direct For Computer & Info Scie & Enginr
- Division Of Computer and Network Systems [0931748] Funding Source: National Science Foundation
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The use of power converters is very important in maximizing the power transfer from renewable energy sources such as wind, solar, or even a hydrogen-based fuel cell to the utility grid. An LCL filter is often used to interconnect an inverter to the utility grid in order to filter the harmonics produced by the inverter. Although there is an extensive amount of literature available describingLCLfilters, there has been a gap in providing a systematic design methodology. Furthermore, there has been a lack of a state-space mathematical modeling approach that considers practical cases of delta-and wye-connected capacitors showing their effects on possible grounding alternatives. This paper describes a design methodology of an LCL filter for grid-interconnected inverters along with a comprehensive study of how to mitigate harmonics. The procedures and techniques described in this paper may be used in small-scale renewable energy conversion systems andmay be also retrofitted for medium-and large-scale grid-connected systems.
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