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In this paper three different implementations of the full-state feedback linear-quadratic (LQ) controller for a 3-phase 4-leg sine wave inverter are compared. The LQ controller is designed in stationary reference frames abc and αβγ as well as in a dq0 reference frame rotating with the fundamental output frequency, and is not cascaded with any inner controller. In the proposed control schemes integral...
In this paper the impact of photovoltaic (PV) system connected to the medium voltage distribution gird using three-phase three-level inverter and step-up transformer will be investigated. The PV inverter is capable to control active and reactive power independently. The impact to the grid voltage profile of both active and reactive power regulation of the PV system will be examined. In order to simplify...
Because of the rapid increase of distributed generation, active voltage regulation becomes relevant for low voltage networks. In this paper, several power electronic voltage regulation approaches are presented and compared to each other through a Monte-Carlo-based network analysis. The focus of the investigation is on a series voltage regulator, for which simulation results and experimental results...
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