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In today's energy grid there are very few options to handle the severe energy swings of renewable energy sources. A Synchronverter is designed to allow an asynchronous energy source like wind mills and solar panels to appear as a synchronous energy sources. To this day, the designs have been analog with large size and large assortment of components. This paper proposes a digital design that matches...
In this paper, the idea of operating an inverter as a synchronous generator is developed after establishing a model for synchronous generators to cover all dynamics without any assumptions on the signals. The inverters which are operated in this way are called static synchronous generators (SSG). This means that the well-established theory/device for synchronous generators can still be used for inverters,...
In this paper, necessary and sufficient conditions for the approximate controllability of a large class of neutral systems in reflexive Banach spaces in investigated. The approach is based on the transformation of such systems into appropriate boundary control systems.
A semigroup approach for the well-posedness of perturbed nonhomogeneous abstract boundary value problems is developed in this paper. This allows us to introduce a useful variation of constant formula for the solutions. Drawing from this formula, necessary and sufficient conditions for the approximate controllability of such systems are obtained, using the feedback theory of well-posed and regular...
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