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http://dx.doi.org/10.6113/TKPE.2011.16.3.250

Generalized Circulating Current Control Method in Parallel Three-Phase Boost Converters  

Lim, Chang-Soon (한양대 대학원 전기공학과)
Lee, Kui-Jun (한양대 대학원 전기공학과)
Kim, Rae-Young (한양대 전기제어생체공학부)
Hyun, Dong-Seok (한양대 전기제어생체공학부)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.16, no.3, 2011 , pp. 250-257 More about this Journal
Abstract
This paper analyzes characteristic of the three-phase coupled inductor connected to ac source to effectively mitigate the high-frequency circulating current generated in parallel three-phase boost converters. The three-phase coupled inductor analysis presented in this paper uses the three-phase coupled inductor structure and voltage equations. Based on this analysis, the three-phase coupled inductor is added to the conventional low-frequency averaged model. As a result, the novel averaged model which can reduce the low and high-frequency circulating current simultaneously is developed. Using the zero-sequence component of the novel averaged model, each total inductance to the circulating current of the three-phase coupled inductor and line inductor can be obtained. Simulation and experiment results verify the usefulness of three-phase coupled inductor in parallel three-phase boost converters.
Keywords
Three-phase coupled inductor; Circulating current; Parallel three-phase boost converters;
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