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This paper explores a new resonant converter which features compact size, high efficiency, and compatibility with self-driven synchronous rectifiers. The proposed resonant converter and the LLC series resonant converter (LLC-SRC) are in the same three-element resonant converter category and these two converters both consist of 2 inductors and one capacitor in their resonant tanks. While the LLC-SRC...
Due to the potential need for ultra-wide input voltage range power factor correction (PFC) circuit, one may consider Buck-boost converter as a PFC circuit (PFC Buck-boost) instead of Boost converter (PFC Boost). The voltage step-up/down freedom of Buck-boost converter allows a lower output voltage and smaller duty cycle compared to Boost converter. In addition, indirect input/output path limits the...
The bridgeless power-factor-correction (PFC) converter possesses higher efficiency than the conventional boost-type PFC converter due to its reduced conduction voltage drop and conduction loss. The conventional multiloop control needs to sense the input current to yield the desired sinusoidal current waveform. This paper presents a control method for bridgeless PFC converter to provide sinusoidal...
This paper proposes a method that can reduce component counts of isolated multiple-input converters. This method can be applied not only to hard-switching converters but also soft-switching converters such as full-bridge (FB) converters. Two types of multiple-input (MI) FB converters that are generalized with a component counts reduction method are also proposed in this paper. Circuit operation, power...
A multiple-input current-source converter for a stand-alone hybrid power system is proposed. As the power rating increases, isolated multiple-input converters may have limited efficiency caused by power losses from their coupled-inductor or transformer leakage inductance. This paper discusses a multiple-input circuit topology suitable for hybrid renewable energy applications, such as photovoltaic,...
Photoelectrochemical (PEC) degradation and electrodegradation (ED) of methyl orange were investigated in aqueous NaCl and Na2SO4 solutions. Photocatalytic degradation(PCD) was also performed in TiO2(P25) suspension under UV-irradiation for comparison. Electrodegradation efficiencies showed enhanced decolorization performance at higher concentrations of electrolyte solutions and applied potentials...
In this paper, numerical analog technology combined with engineering experience are used for the problem existed. A supercritical CO2 (SC- CO2) dyeing equipment together with computer control system is designed, and by use of the software Pro/E, have built the entity modeling and finished the device visual design for the important parts of supercritical CO2 liquid dyeing equipment. The structure analysis...
Paper bases on the principles of the coupling inductor to illustrate the planar integration of two resonant inductors and one filter inductor in the ZCS buck QRC, all three inductors are integrated in one magnetic core, then the decreasing in the volume and height can be achieved, through comparing the close coupling with the loose coupling, how to achieve the soft switching is discussed, and the...
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