Minimizing DC system loss in multi-terminal HVDC systems through adaptive droop control

Javad Khazaei, Zhixin Miao, Lakshan Piyasinghe, Lingling Fan

Research output: Contribution to journalArticlepeer-review

39 Scopus citations


Abstract In this paper, droop control of inverters in a multi-terminal HVDC (MTDC) system is designed to achieve minimum DC system loss while preventing converter overvoltage. Circuit analysis along with optimization analysis is first conducted to seek the optimal droop control gains. Contingent operating conditions are then considered. The droop control gains will adapt to achieve minimum loss as well as constant inverter side dc voltage. A 6-terminal MTDC system with detailed control loops as well as PWM-based switching is built in a real-time digital simulator, RT-Lab. Time-domain simulation results validate the circuit analysis results and demonstrate the feasibility of the proposed adaptive droop control.

Original languageEnglish (US)
Article number4320
Pages (from-to)78-86
Number of pages9
JournalElectric Power Systems Research
StatePublished - Sep 1 2015

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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