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논문 기본 정보

자료유형
학술저널
저자정보
Ja-Yoon Kang (Chonbuk National University) Dae-Su Han (Chonbuk National University) Yong-Sug Suh (Chonbuk National University) Byoung-Chang Jung (Hyosung Co.) Jeong-Joong Kim (Hyosung Co.) Jong-Hyung Park (Hyosung Co) Young-Joon Choi (Hyosung Co.)
저널정보
전력전자학회 전력전자학회논문지 전력전자학회 논문지 제20권 제1호
발행연도
2015.2
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1 - 10 (10page)

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초록· 키워드

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This paper proposes a control algorithm for permanent magnet synchronous generators with a back-to-back three-level neutral-point clamped voltage source converter in a medium-voltage off-shore wind power system under unbalanced grid conditions. Specifically, the proposed control algorithm compensates for unbalanced grid voltage at the PCC (Point of Common Coupling) in a collector bus of an off-shore wind power system. This control algorithm has been formulated based on symmetrical components in positive and negative synchronous rotating reference frames under generalized unbalanced operating conditions. Instantaneous active and reactive power is described in terms of symmetrical components of measured grid input voltages and currents. Negative sequential component of AC input current is injected into the PCC in the proposed control strategy. The amplitude of negative sequential component is calculated to minimize the negative sequential component of grid voltage under the limitation of current capability in a voltage source converter. The proposed control algorithm enables the provision of balanced voltage at the PCC resulting in the high quality generated power from off-shore wind power systems under unbalanced network conditions.

목차

Abstract
1. Introduction
2. Modeling of PMSG under Unbalanced Grid
3. Imbalance Factor
4. Negative-sequence Current Injection (NCI) Control Algorithm
5. Simulation
6. Experiment
7. Conclusion
References

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UCI(KEPA) : I410-ECN-0101-2016-560-001104503