Novel dc/dc choppers with circuit breaker functionality for HVDC transmission lines

Liangyi Tang, Bin Wu, Venkata Yaramasu, Weirong Chen, Hussain S. Athab

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)106-116
Number of pages11
JournalElectric Power Systems Research
StatePublished - Nov 2014
Externally publishedYes


  • Closed-loop control
  • HVDC circuit breakers
  • HVDC transmission
  • Multi-terminal HVDC
  • dc/dc chopper

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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