Journal
IEEE TRANSACTIONS ON SUSTAINABLE ENERGY
Volume 10, Issue 4, Pages 1971-1980Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TSTE.2018.2876800
Keywords
Decentralized control; dc voltage stability; power sharing; backstepping design
Categories
Funding
- State Grid Corporation of China [52094017000Z]
- National Natural Science Foundation of China [51877133, 61673347, 61751205]
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A decentralized control scheme based on backstepping design is proposed in this paper for the grid converters of a multi-terminal dc power integration system. With the proposed method, dc bus voltage can be accurately maintained together by several converters through appropriately adjusting their transmitted power according to the power sharing ratio. The system structure is presented and its dynamic model is formulated. The decentralized control laws of the grid converters are developed step by step by designing appropriate Lyapunov functions. The dc bus voltage control and the power sharing performance of the proposed controlmethod are evaluated both under the system normal condition and converter fault condition. Finally, the effectiveness of the proposed scheme is validated through the real-time simulations on NI-PXI platform.
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