N.C. Sahoo, R. Ranjan, P.K. Dash, and G. Panda
STATCOM, feedback linearization, nonlinear control
The authors present a nonlinear control approach to the multi- input multi-output (MIMO) nonlinear model of a static synchronous compensator (STATCOM). The proposed controller design is based on a feedback linearization scheme. Its prime goal is the coordinated control of AC and DC voltage for a STATCOM installed in a power system. First, the nonlinear mathematical model of STATCOM is derived. Then, using input–output feedback linearization, a state feedback control law is derived by pole placement. The proposed control strategy is tested on both distribution and generation system, by digital computer simulations on the complete system for various types of loads and/or disturbances. Comparison of these results with those obtained in conventional cascade control architecture establishes the elegance of this new control approach.
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