A Power Sharing Scheme for Series Connected Offshore Wind Turbines in a Medium Voltage DC Collection Grid Conference Paper uri icon

abstract

  • © 2016 IEEE. This work introduces a new method for connecting offshore wind turbine generators (WTGs) in series when interfaced to a medium voltage DC (MVDC) collection grid. Limiting the series stacking to pairs of WTGs and introducing a power sharing converter (PSC) stage between them allows series connected WTGs to operate at independent power levels in a voltage sourced collection grid. This allows for reduced collection grid losses compared to previously proposed series connected current sourced approaches when operating below nominal power. Simulation results demonstrate system operation during a 1:2 power unbalance between series connected WTGs. A 100 W, 100 Vdc three-phase lab-scale prototype input rectifer stage demonstrates proper WTG current shaping with >0.97 displacement power factor magnitude, as well as balanced DC link voltages.

author list (cited authors)

  • Daniel, M. T., & Enjeti, P. N.

citation count

  • 2

publication date

  • March 2016

publisher