In order to utilize the decoupling control strategy on VSC-HVDC, the dynamic mathematical models are set up at dq 0 rotating coordinate system. On the basis of mathematical models, decoupling controller of VSC is designed by adopting deviation decoupling strategy and the active power and reactive power can be controlled independently. Matlab/Simulink software is used simulating and analysing this designed system. The simulation results verify the correctness of the mathematical model and the reliability of the desgined controller.
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