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The paper is intended to propose an optimal control strategy for autonomous micro-grids that focuses on the possibility to minimize the overall micro-grid operating cost, borne by the micro-grid operator in order to provide power distribution to customers, while minimizing the pollutants emissions and assuming that all the power made available by the renewable energy sources is injected into the micro-grid...
This paper presents a three-level three-phase neutral-point-clamped back-to-back converter applied to a wind emulator, where a wind power generator is connected to the grid through the back-to-back converter. The converter regulates the power extracted from the generator and controls how this power is injected to the grid with the desired power factor. Two phase locked loops are in charge of synchronizing...
As wind penetration levels increase, the effects on the electricity system increase, and therefore the technical characteristics of the wind generation become more important. In addition, many modern wind turbines could in principle behave unlike conventional synchronous generators, raising new problems and perhaps providing new benefits to the system. Electricity system operators are responsible...
Traditionally, most of the generation plants in the countries all over the world are constituted of big hydro or thermal generating units, which are subjected to grid codes minimum requirements concerning their operation either in normal or under emergency conditions. Such minimum requirements are intended to guarantee reliability and an economic and safe operation. With the rising of new renewable...
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