Reliable control and optimal operation of the doubly fed induction generator (DFIG) is necessary to ensure high efficiency and high load-following capability in modern wind power plants. This is often difficult to achieve using conventional linear controllers, as wind power plants are nonlinear and contain many uncertainties. Furthermore, unbalanced conditions often exist on the power network, …
The design and synthesis is reported for a fl uorescent conjugated polymer (CP), poly{[4,4,9,9-tetrakis(4-(octyloxy)phenyl-4,9-dihydro- s -indaceno[1,2-b:5,6-b′]dithiophene)]- alt - co -[4,7-di(thiophen-2-yl)-2,1,3-benzothiadiazole]}(PIDT-DBT), with absorption and emission profi les fallen within far-red/near infrared (FR/NIR) region and further demonstrate its application in long-term in vit…
Abstract. Nickel-based catalysts supported on Al2O3 . SiO2 were prepared with modification of the second metal involving La, Co, Cu, Zr or Y, of which the catalytic behaviors were assessed in the ethanol steam reforming reaction. Activity test indicated that addition of La resulted in higher selectivity of hydrogen and lower selectivity of carbon monoxide, compared with Co-doped nickel cat…