Single-Stage transformerless AC/DC converter received much attention in the universal line application. Unlike the existing converters a new high step-down transformerless single-stage single-switch AC/DC converter is proposed. The topology integrates a buck-buck-boost converter with low intermediate bus and output voltage. The converter utilizes a buck converter as a PFC cell and buck-boost co...

This paper proposes an improved control method based on modified Delta-Sigma Modulator (DSM) to enhance transient response and improve harmonic contents of buck DC-DC converter. The main advantages of the proposed method are improving the output voltage frequency spectrum, correction of the output voltage harmonic contents and sideband harmonics, reduction of switching noise peaks at the output...

Abstract Background Goat milk is very similar to human in terms of its abundant nutrients and ease digestion. To derive greater economic benefit, farmers require more female offspring (does); however, the buck-to-doe sex ratio approximately 50%. At present, artificial insemination after separation X/Y sperm using flow cytometry primary means controlling livestock offspring. However, has not bee...

unregulated input voltage to a regulated output voltage. In applications requiring DC-DC conversion from a high input voltage, the buck regulator dramatically improves conversion efficiency relative to linear regulator alternatives. However, applying the buck regulator to applications with high input-to-output step-down ratios creates significant challenges for the pulse-width modulation (PWM) ...

A Power Factor Correction Using singleinductor dual-output buck-boost converter operating in critical conduction mode is proposed in this paper. Each output of the SingleInductor Dual-Output buck-boost converter can be regulated independently by multiplexing a single inductor, Compared with a conventional two-stage multiple-output converter, the singleinductor dual-output buck-boost converter b...

In this paper a single-inductor dual-output (SIDO) buck-boost PFC converter operating in critical conduction mode (CRM) is proposed. By multiplexing a single inductor, each output of SIDO buck-boost converter can be regulated independently. Compared with conventional two-stage multiple output converter, SIDO buck-boost PFC converter benefits from significant overall cost saving, small size and ...

This paper shows the results of adding static converters (Boost, Buck and Buck-Boost converters) as an adaptation solution between a PEM Fuel Cell generator and a resistive load in order to study different effects of the converter on the generator performances in terms of voltage and current behavior. The presented results are obtained by simulating the Bond Graph developed model under 20-Sim s...

In this paper, a robust sliding mode controller for the control of dc-dc buck converter is designed and analyzed. Dynamic equations describing the buck converter are derived and sliding mode controller is designed. A two-loop control is employed for a buck converter. The robustness of the sliding mode controlled buck converter system is tested for step load changes and input voltage variations....

For the purpose of reproducing complex vehicle-pedestrian interactions using a simplified and standardized vehicle model, a previous study has developed a computational model for a generic buck to reproduce car-small sedan interaction using a standardized vehicle front model. Although the previous study validated the buck model using a finite element (FE) model for a pedestrian dummy in terms o...