A New Wind Turbine Interface to MVdc Collection Grid With High-Frequency Isolation and Input Current Shaping Conference Paper uri icon

abstract

  • 2013 IEEE. A new power electronic interface suitable for the integration of the next-generation offshore wind turbines with medium voltage dc collection grids is introduced in this paper. A practical design case study provides guidance for further development of the proposed interface. The detailed simulations show acceptable operation of the proposed approach from 25% to 100% rated power, including step changes in the wind turbine generator (WTG) input power. Simulation results demonstrate >0.95 displacement power factor magnitude, near-sinusoidal WTG current, continuous output current, stiff dc link voltages, and inverter zero-current switching. Preliminary hardware results from a 250 Vdc, 700-W lab-scale prototype are introduced, demonstrating an input rectifier boost characteristic with a dominant input current fundamental and >0.95 displacement power factor magnitude. The dc link current has a large peak-to-average ratio as expected, and dc link capacitor voltage balance is achieved via adjustment of relative duty cycles between high- and low-side active rectifier switches.

name of conference

  • IEEE Journal of Emerging and Selected Topics in Power Electronics

published proceedings

  • IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS

author list (cited authors)

  • Daniel, M. T., Krishnamoorthy, H. S., & Enjeti, P. N.

citation count

  • 27

complete list of authors

  • Daniel, Michael T||Krishnamoorthy, Harish S||Enjeti, Prasad N

publication date

  • December 2015