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Reactive Power Compensation Capability and Active Power Transfer of PMSG Based Variable Speed WECS

Surya N.S, H.R Sudarshana Reddy

The renewable energy sourcesare very essential to replace conventional generation to control the global warming and atmospheric pollution.In order to increase the wind penetration the wind farm has to be connected to the best suitable bus and it should be controlled by suitable methods.This paper presents the dynamic model and control of PMSG based variable speed wind energy systems. The proposed system consist of a PMSG, wind turbine, two back to back converters, a dc link, battery system, a highly nonlinear load and power electronic regulators. The dynamic model of PMSG is represented in synchronous rotatingreference frame and equations explained their behaviour. The wind turbine and generator are modelled and developed separate control strategy for both the converters.At the point of common coupling (PCC) the harmonics and reactive power compensation capability is analysed. The proposed model is implemented in MALAB/SIMULINK using �?��??�??�??�?��??�??�?? �??�??�??�??�??�?? �?��??�??�??�??�??�??. �?��??�??�??�?��??�??�??�?��?� results shows the active power transfer and reactive power compensation capability of the model with minimal harmonics pollution.