A Unidirectional DC-DC Autotransformer for DC Grid Application
AbstractConventional unidirectional DC-DC converters for DC grid application employ DC-AC-DC two-stage conversion technology and suffer from high converter cost and power loss. To solve these issues, a unidirectional step-up DC-DC autotransformer (UUDAT) and a unidirectional step-down DC-DC autotransformer (DUDAT) are studied. The UUDAT and DUDAT are composed of a series connection of diode bridges and voltage source converters. Topologies of UUDAT and DUDAT are detailed. The harmonic and un-controllability issues are discussed. Control and possible application scenarios for UUDAT and DUDAT are depicted. DC fault isolation mechanism and the methods of dimensioning the voltage and power ratings of the components in UUDAT and DUDAT are studied. Extensive simulations on power system level and experiments on a UUDAT and DUDAT prototype verified their technical feasibility. View Full-Text
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Zhou, M.; Xiang, W.; Zuo, W.; Lin, W.; Wen, J. A Unidirectional DC-DC Autotransformer for DC Grid Application. Energies 2018, 11, 530.
Zhou M, Xiang W, Zuo W, Lin W, Wen J. A Unidirectional DC-DC Autotransformer for DC Grid Application. Energies. 2018; 11(3):530.Chicago/Turabian Style
Zhou, Meng; Xiang, Wang; Zuo, Wenping; Lin, Weixing; Wen, Jinyu. 2018. "A Unidirectional DC-DC Autotransformer for DC Grid Application." Energies 11, no. 3: 530.
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