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Monitoring the nucleation and growth of nanomaterials is a key technique for material synthesis design and control. An efficient fabrication method can be realized deeply understanding the growth mechanisms. Here, noble metal nanostructures, gold (Au) nanoparticles, silver nanostructures (Ag nanoparticles/Ag nanowires) and gold-silver alloy nanoparticles were prepared in a facile method at room temperature...
The harmonic decoupling network (HDN) structure has been widely used as prefilters in grid synchronization techniques, which can accurately extract the fundamental positive- and negative-sequence components and interested harmonics in unbalanced and distorted grid voltages. However, the stability of general HDN is seldom discussed. In this paper, the transfer function expression of general HDN is...
Due to different initial state of charge (SoC) of distribution energy storage system (DESS) and mismatched line impedance, the SoC of DESS is unbalanced in microgrid. The conventional P-f droop, used to obtain accuracy load sharing, cannot balance the SoC. To overcome the drawback, this paper proposes a unified SoC based droop control method with distributed communication lines. In this scheme, the...
A hybrid B4 active power filter (APF) with reduced switches is proposed in this study, which is composed of a inductance–capacitance (LC) passive filter and a four-switch three-phase inverter (B4 inverter) in series connection. The LC filter is used to supply reactive power, and the active filter is responsible for mitigating the harmonics. Compared with the previous proposed four-switch hybrid APF,...
The UPQC combines the functions of a voltage compensator and a current compensator to regulate power quality. This paper adopts a Novel Single non-isolation transformer Unified Power Quality Conditioner1 topology and introduces the novel single-phase Unified Power Quality Conditioner circuit topology and basic working principle. analyzes the Circulating Current problems of the novel single-phase Unified...
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