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| Control of Circulating Current in Interleaved Parallel Topology of Direct-drive PMSG Grid-side Converter |
| Jiang Yan, Wang Yaonan, Xiao Lei, Luo Derong |
| Engineering, Hunan University Changsha 410082 China |
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Abstract The circulating current problem in interleaved parallel topology of direct-drive permanent magnet synchronous generator(D-PMSG) grid-side converter is studied by using the average model. The control strategies for zero sequence component of three-phase current at the rotating coordinate system are analyzed. In order to inhibit circulating current, a control strategy, which contains an addition zero sequence current loop compared with traditional strategy, is proposed. Simulation and experiment results verify the feasibility and correctness of the strategy, which show that the proposed control strategy for grid side converter circulation inhibition under interleaved parallel topology has better control effect.
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Received: 28 November 2012
Published: 25 March 2014
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2013, Vol. 28 
