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This paper proposes an improved midpoint potential balancing method that reduces deviation of DC capacitor voltages of T-type three-level inverter. In the proposed balancing strategy, the 60° coordinate is used to avoid sophisticated calculation of trigonometric function, and a simplified balance factor is set in each region of virtual space vector diagram. All values of the simplified balance factor...
Planning and scheduling of the flow of crude oil are very important problems in petroleum refineries. Since they emphasize on different apartment of plant, there are more optimized space in scheduling layer after plan optimization. The core of this article is to treat the scheduling problem when transitions occur by feedstock from tanks to crude distillation units. A scheduling model is built as the...
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