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Modeling and state feedback controller for current source inverter based STATCOM

The static synchronous compensator (STATCOM) is increasingly popular in power system application. In general, power factor and stability of the utility system can be improved by STATCOM. Specifically, STATCOM can regulate the voltage of connection point and compensate the power factors of equipment serviced by that node. The dynamic performance of STATCOM is critical to these performance and stability function. STATCOM is a multi input and multi output system (MIMO), which can be presented by a mathematic model. In this paper, an optimal linear quadratic regulator (LQR) design is presented for transient dynamic performance of current-source converter based STATCOM.