Large Disturbance Attenuation Sampled-data Controller Design for Nonlinear STATCOM System ⋆
نویسندگان
چکیده
A novel large disturbance attenuation sampled-data control scheme is investigated for the strongly nonlinear static synchronous compensator (STATCOM) system using backstepping technique. Focus is centered on the effect of unknown large disturbances that occurs on the system. The Minimax method is used to compute the maximum degree of disturbance. This method effectively reduces the conservativeness brought by the existing disturbance treatment, and ensure the insensitivity to large disturbances. Furthermore, considering the effect of mechanical power disturbance and short-circuit ground fault, the designed scheme was validated by simulation. Compared with a continuous controller designed from the same method, the results showed that the proposed controller has better behaviors on enhancing the transient stability of power systems.
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