Ultra-low ESR capacitors such as ceramics are highly desirable because they can support fast-changing load transients and also bypass very high frequency noise coming from switching converter power sources, which a linear regulator can not reject. However, using ultra-low ESR capacitors on the output of an LDO regulator requires that specific design changes be implemented to ensure loop stability.

A non-isolated DC/DC converter with high transfer gain is proposed in this paper. The presented converter consists of the switched inductor and three-level converters. The DC/DC power converter is three-level boost converter to convert the output voltage of the DC source into two voltage sources. The main advantages of DC/DC converter are using low voltage semiconductors and high gain voltage. ...

Bifurcation analysis is performed to a power-factor-correction (PFC) boost converter to examine the fast-scale instability problem. Computer simulations and analysis reveal the possibility of period-doublingfor some intervals within the line cycle. The results allow convenient prediction of stability boundaries. Analytical equations and design curves are given to facilitate the selection of par...

for beneficiation of converter slag, the role of surface phenomena on slag composition was studied. this work includes some experimental data, which were measured for basic oxygen steel (bos) slag in isfahan steel plant. all data were collected on site in the plant. the results support the idea that surface activity plays a major role in converter slag formation. it was also a new finding that ...

This paper deals with the stabilization of direct current/direct current (DC/DC) boost converter and nonlinear phenomena elimination using a constrained backstepping technique. Based on averaged model, proposed control approach is designed input to state stability concept used prove system global stability. Furthermore, structural proven show efficiency suppress exhibited by converter. The simu...

Increased use of electric and hybrid electric vehicles (EVs/HEVs) is one of the most promising ways to reduce carbon dioxide emissions. To develop more competitive solutions, one of the trends in the development of drive systems for EVs/HEVs is to integrate the power electronic converter and the electric motor. This thesis aims to investigate the performance and the operation of modular convert...

In this project a new control strategy that can be used together with such a CCC is presented. In the new control system the inverter emulates the operation of a Voltage Source Converter, in the sense that, beside the control of the active power flow through the converter, the reactive power exchange with the AC network can also be managed in order to adjust the alternating voltage of the conve...

Batteries in a fuel-cell power system are essential to providing the additional power during the sharp load-transients. This necessitates a power-electronics subsystem (PES), which controls the energy flow between the fuel-cell stack, the battery, and the application load during the transient and in the steady states. In this paper, a distributed PES (comprising a multimodule dc-dc boost conver...

Higher order delta-sigma (∆Σ) modulator with one bit quantizer is known as one of the easiest method to gain a high resolution A/D converter without the need of accurately matched components. However, stability of higher order ∆Σ modulator is still a problem during the design and implementation process. Stabilizing higher order modulator requires the proper choice of integrator gains. In this p...