a wind turbine transformer (wtt) is designed using a 3d wound core while the transformer’s total owning cost (toc) and its inrush current performance realized as the two objective functions in a multi-objective optimization process. multi-objective genetic algorithm is utilized to derive pareto optimal solutions. the effects of inrush current improvement on other operating and design parameters...

A wind turbine transformer (WTT) is designed using a 3D wound core while the transformer’s total owning cost (TOC) and its inrush current performance realized as the two objective functions in a multi-objective optimization process. Multi-objective genetic algorithm is utilized to derive Pareto optimal solutions. The effects of inrush current improvement on other operating and design parameters...

This paper presents a practical approach to calculate the total owning cost (TOC) of three-phase Induction Motor, which is based on motor’s nameplate data and purchasing price. The economic evaluation performed considering both induction motor electrical energy losses its amortized annual capital cost. proposed technique consists three stages, where power are determined analytically in first st...

A significant challenge in systems engineering and acquisition is to justify investments in system flexibility as opposed to buying more features or copies of a less-flexible systems. The Total Ownership Cost (TOC) has the advantages of having clear cause-effect relationships that are easy to understand and reason about. We present two TOC models for valuing flexibility that have been calibrate...

The chemical and cost efficiency of the ozone with ultraviolet radiation (O3/UV) photochemical degradation of total organic carbon (TOC) was examined. The efficiencies were compared to other commonly used wastewater purification processes, hydrogen peroxide with UV (H2O2/UV) and titanium dioxide with UV (TiO2/UV). The O3/UV process appears to be the least cost-efficient process due to high chem...

This paper presents a variant of Vogel's approximation method (VAM) for transportation problems. The importance of determining efficient solutions for large sized transportation problems is borne out by many practical problems in industries, the military, etc. With this motivation, a few variants of VAM incorporating the total opportunity cost (TOC) concept were investigated to obtain fast and ...

During drinking water treatment, chlorine reacts with total organic carbon (TOC) to form disinfection byproducts (DBP), some of which can be carcinogenic. Additional treatment required to remove TOC before chlorination significantly increases treatment cost. There are two main sources of TOC in a water supply reservoir: (1) the watershed draining to the reservoir, and (2) the internal loading w...

Issam Najm, Carol Tate, and Douglas Selby he upcoming Disinfectants/Disinfection ByProducts (D/DBP) Rule recognizes that a greater reduction in the total organic carbon (TOC) concentration of a natural water supply may appreciably reduce the concentrations of known and unknown DBPs formed during chlorination. Thus, the D/DBP Rule requires that conventional surface water treatment plants use enh...

The present study focuses on effects of operational parameters on electrochemical wastewater treatment for synthetic wastewater. Electro-oxidation has emerged as one of the advanced oxidation processes gaining more attention because it offers many distinctive advantages over other conventional methods such as versatility, high treatment efficiency, safety, amenability of automation and cost eff...