Unidirectional Dc/Dc Modular Multilevel Converter For Offshore Windfarm With The Control Strategy Based On Stationary Frame
JOURNAL OF ENGINEERING-JOE(2019)
摘要
This paper presents the design and control of an advanced unidirectional DC/DC modular multilevel converter (MMC) that facilitate the integration of off-shore windfarms with the high-voltage direct current (HVDC) transmission system. The proposed converter deploys a single-phase MMC inverter coupled with series-connected rectifier modules through multiple medium frequency transformers. Unlike the conventional dq control method, which involves multiple transformations, this paper also proposes a simple control strategy that directly acts on the AC output of the MMC, under the stationary reference frame.
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关键词
offshore installations, wind power plants, power generation control, invertors, DC-DC power convertors, HVDC power transmission, control system synthesis, rectifiers, power transformers, offshore windfarm, advanced unidirectional DC, DC modular multilevel converter, high-voltage direct current transmission system, single-phase MMC, series-connected rectifier modules, multiple medium frequency transformers, conventional dq control method, stationary reference frame
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