In this paper, a novel high step-up DC-DC converter with coupled-inductor and voltage-doubler circuits is proposed. The converter achieves high step-up voltage gain with appropriate duty ratio and low voltage stress on the power switches. Also, the energy stored in the leakage inductor of the coupled inductor can be recycled to the output. The operating principles and the steady-state analyses ...

This paper presents simple lumped element equivalent circuit for the coplanar waveguide (CPW) square spiral inductor. The circuit is based on physical modelling which takes into consideration the parasitic effects inherent in the CPW spiral inductor. The obtained scattering parameters are in good agreement with fullwave and quasi-static results available in the literature. Such a simple circuit...

Abstract In this study, the advanced topologies of a DC–DC converter for applications involving harvesting solar energy are discussed. This work’s primary contribution is guide choosing most effective topology when developing collection systems. Several compared in terms range power levels they can oversee, complexity underlying hardware, cost implementation, tracking efficiency and overall con...

Based on the fact that the real inductor and the real capacitor are fractional order in nature and the fractional calculus, the transfer function modeling and analysis of the open-loop Buck converter in a continuous conduction mode (CCM) operation are carried out in this paper. The fractional order small signal model and the corresponding equivalent circuit of the open-loop Buck converter in a ...

This paper presents a high step-down tranformerless single-stage single-switch ac/dc converter suitable for universal line applications (90–270 Vr m s ). The topology integrates a buck-type power-factor correction (PFC) cell with a buck–boost dc/dc cell and part of the input power is coupled to the output directly after the first power processing. With this direct power transfer feature and sha...

Capacitive De-Ionization (CDI) is becoming a suitable alternative for desalination. The low cost of the materials required and its reduced energy consumption can be critical factors for developing this technique. CDI technology does not require a high-pressure system and the energy storage capability of CDI cells allows it to be reused in other CDI cells, thus minimizing consumption. The goal o...

Noise Coupling in Heavily and Lightly Doped Substrate from Planar Spiral Inductor Tony Yeung, Alan Pun, Zhiheng Chen, Jack Lau, Fran cois J.R. Cl ement Dept. of Electrical & Electronic Engineering, The Hong Kong University of Science & Technology Center for Integrated Systems, Stanford University, Stanford, CA 94305 Abstract| Recently, much studies have been done to include on-chip inductors fo...

This paper discusses the use of printed circuit board (PCB) integrated inductors for low power dc/dc buck converters. Coreless, magnetic plates and closed core structures are compared in terms of achievable inductance, power handling and efficiency in a footprint of 10 10mm. The magnetic layers consist of electroplated NiFe, so that the process is fully compatible with standard PCB process. Ana...

Abstract The major challenges of the high-gain DC–DC boost converters are high-voltage stress on switch, extreme duty ratio operation, diode reverse-recovery and converter efficiency problems. There many topologies that have been widely developed to overcome those problems, especially for solar photovoltaic (PV) power-system applications. In this paper, 20 low-power selected from available lite...

Battery-equipped apparatuses, such as electric vehicles (EVs), renewable energy generations, and mobile devices, are widely used still being developed. For the design evaluation of these there is a growing demand for dc power supplies to test charge-discharge characteristics lifetimes batteries. As voltage performance batteries increase, battery must be able handle higher voltages have faster o...