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논문 기본 정보

자료유형
학술저널
저자정보
Gedeon Niyitegeka (Chungbuk National University) Kyungkyu Lee (Chungbuk National University) Jaeho Choi (Chungbuk National University) Yujin Song (Korea Institute of Energy Research)
저널정보
전력전자학회 전력전자학회논문지 전력전자학회 논문지 제21권 제3호
발행연도
2016.6
수록면
231 - 237 (7page)

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Recently, the interest in DC systems to achieve more efficient connection with renewable energy sources, energy storage systems, and DC loads has been growing extensively. DC systems are more advantageous than AC systems because of their low conversion losses. However, the DC-link voltage is variable during operation because of different random effects. This study focuses on DC voltage stabilization applied in stand-alone DC microgrids by means of voltage ranges, power management, and coordination scheme. The quality and stability of the entire system are improved by keeping the voltage within acceptable limits. In terms of optimized control, the maximum power should be tracked from renewable resources during different operating modes of the system. The ESS and VSDG cover the power shortage after all available renewable energy is consumed. Keeping the state of charge of the ESS within the allowed bands is the key role of the control system. Load shedding or power generation curtailment should automatically occur if the maximum tolerable voltage variation is exceeded. PSIM-based simulation results are presented to evaluate the performance of the proposed control measures.

목차

Abstract
1. Introduction
2. Proposed operation and control strategies
3. Simulation results
4. Conclusion
References

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