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This paper shows how a single phase STATCOM model can be seen as a two block series connection. In this way, it is suitable to use a cascade control in order to regulate both DC links voltages and reactive power needed by AC main. This last is achieved through control strategy consisting in two parts: one of them is a cascade multi-loop control which delivers only one average control signal and the...
One of the main problems when H-bridge multilevel converter is used for compensating reactive power is the DC link regulation; this is because of different losses into each cell. In this paper a DC link regulation strategy is obtained through a power analysis. It is shown how the strategy can be applied as much an asymmetric as a symmetric multilevel converters-based STATCOM. Some of simulation and...
This paper presents how through a suitable DC link regulation strategy, the asymmetric cascade H-bridge converter can perform STATCOM and active filter functions simultaneously. Initially DC link regulation strategy for a STATCOM function is developed, and then an adaptation of the strategy is presented in order to show the device works as an active filter. A two cells binary prototype is used to...
The addition of support for genericity to mainstream programming languages has a notable influence in refactoring tools. This also applies to the JAVA programming language. Those versions of the language specification prior to JAVA 5 did not include support for generics. Therefore, refactoring tools had to evolve to modify their refactoring implementations according to the new language characteristics...
It has already been shown that many of the complications that we associate with diabetes appear in the patient in early stages of diabetes, or even before the disease is developed. The aim of this paper, then, is to check whether Qtc (corrected with bazett's formula) is altered in these prior stages of diabetes (insulin resistance and/or altered glucose according to the American Diabetes Association)...
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