A PWM current source-based DC transmission system for multiple wind turbine interfacing

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A pulsewidth modulation (PWM) current source wind energy conversion system based on a parallel configuration for high voltage direct current application is proposed. A comparison between the parallel and series configurations for current source-based systems is investigated, which shows the merits of the proposed system. A new control technique for the PWM current source inverter is proposed. It can effectively control the average dc-link voltage with a feed-forward loop, while independently controlling reactive power according to grid code requirements. The system simulation confirms the performance of the proposed system with no interaction between wind turbine modules and satisfying performance with grid integration. Practical implementation further verifies the proposed inverter control. Finally, a brief comparison between conventional line-commutated converter-based systems and the proposed PWM current source converter-based system is presented.
Original languageEnglish
Pages (from-to)784-796
Number of pages13
JournalIEEE Journal of Emerging and Selected Topics in Power Electronics
Issue number4
Early online date4 Sept 2014
Publication statusPublished - 31 Dec 2014


  • current source converter (CSC)
  • grid integration
  • high voltage direct current (HVdc)
  • wind energy


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