Abstract
This study presents a double deadbeat-loop control method for distribution static compensator (DSTATCOM), which aims to simplify design of the controller for DSTATCOM and improve the dynamic performance of DSTATCOM. The proposed control method comprises of dc-link voltage deadbeat controller and the ac-side instantaneous current deadbeat controller, in which the dc-link voltage deadbeat control method is proposed for simplifying the design of the outer voltage controller of DSTATCOM. The output of the dc-link voltage deadbeat controller and the reactive current reference obtained from the load are imported into the ac-side instantaneous current controller based on the deadbeat current method. The parameters of the proposed control method can be directly calculated according to the parameters of the given circuit components, and the proposed control method is very easy to be realised in digital processor and with fast dynamic response. Finally, the feasibility of the proposed control method is validated through both simulation and experiment results.
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