2012 · 17 citations · 0 references
EngineeringElectrical EngineeringElectric MachinesEnergy SystemsPower ElectronicsGenerator OperationInduction MachinesPower Electronics For Renewable EnergyRenewable Energy Power ConversionWind Energy SystemsWind Turbine TechnologyConverter ControlDynamic ResponseSimulation StudiesTorsional OscillationsTurbinesWind Energy Conversion SystemsWind Power SystemsWind Turbine Power Converters
Wind turbine technology is currently driven by offshore development, which requires more reliable, multi-megawatts turbines. Models with different levels of detail have been continuously explored for years. This paper presents a 4.5MW doubly-fed induction generator wind turbine model established in PSCAD/EMTDC with two control levels, the wind turbine control and the DFIG control. Two converter models, a detailed and a simplified model are discussed. Mathematical representations of the closed-loop control systems are developed and verified against the PSCAD/EMTDC model. Simulation studies show good correspondence between the two results. In addition, the dynamic response of a 2-mass shaft model to a wind step is also simulated to examine the effect of torsional oscillations. This model can be employed to evaluate the control scheme, mechanical and electrical dynamics and the fault ride-through capability. (6 pages)