期刊
ELECTRIC POWER SYSTEMS RESEARCH
卷 116, 期 -, 页码 106-116出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.epsr.2014.05.021
关键词
HVDC circuit breakers; dc/dc chopper; HVDC transmission; Multi-terminal HVDC; Closed-loop control
资金
- Laboratory for Electric Drive Applications and Research (LEDAR)
- Centre for Urban Energy (CUE) of Ryerson University in Canada
This paper proposes two novel dc/dc choppers with dc circuit breaker functionality for HVDC transmission lines. These converters feature step-up and/or step-down functions with instant interruption of short-circuit faults. Compared to other state-of-the-art converter topologies described in the literature, the proposed topologies have better control functions, lower manufacturing costs and reduced energy losses. A double closed-loop controller is designed to regulate the inductor current and output voltage of the converters. An auxiliary controller is also proposed to ensure proper shut-down of the circuit breaker in the event of dc short-circuit faults. The simulation and experimental results are presented to validate the effectiveness of the proposed converter configurations and control scheme. (C) 2014 Elsevier B.V. All rights reserved.
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