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http://dx.doi.org/10.6113/TKPE.2013.18.1.103

Optimized LCL filter Design Method of Utility Interactive Inverter  

Jung, Sang-Hyuk (Dept. of Control & Instrumentation Eng., Seoul Nat'l Univ. of Science and Technology)
Choi, Se-Wan (Dept. of Electrical & Information Eng., Seoul Nat'l Univ. of Science and Technology)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.18, no.1, 2013 , pp. 103-109 More about this Journal
Abstract
The conventional LCL filter design method of the utility interactive inverter considers only harmonics attenuation of the current injected to the grid. However, in case of utility-interactive inverter with critical load the voltage quality of the critical load should also be considered for LCL filter design. Also, considering cost and volume of LCL filters. it is important to have minimum values of inductance and capacitance as far as the harmonic standards are satisfied. In this paper a LCL filter design method is proposed to satisfy not only the harmonic standards of the grid current during the grid-connected mode but the voltage quality of the critical load during grid-connected mode and stand-alone mode. With the proposed method optimized values of LCL filters could be obtained by applying weighting factor to voltage ripple across the critical load, inductor volume, amount of reactive current and system bandwidth.
Keywords
optimized LCL filter design method; LCL filter; utility-interactive inverter; weighting factor; critical load;
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Times Cited By KSCI : 1  (Citation Analysis)
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