Results 11 to 20 of about 135 (130)

A Comparative Study of Storage Batteries for Electrical Energy Produced by Photovoltaic Panels

Applied Sciences
This article presents a comparative study of the storage of energy produced by photovoltaic panels by means of two types of batteries: Lead–Acid and Lithium-Ion batteries.
Petru Livinti
doaj   +2 more sources

Comparación de flujos de potencia óptimos para redes AC/DC con penetración de recursos energéticos distribuidos considerando incertidumbre

, 2023
En este proyecto de grado, se proponen cuatro novedosas metodologías que resuelven el problema del flujo de potencia óptimo unificado en una red híbrida AC/DC, teniendo en cuenta la presencia de sistemas de baterías y generación distribuida (GD).
Suárez Córdoba, Santiago
core   +1 more source

Low power wind energy conversion system based on variable speed permanent magnet synchronous generators [PDF]

, 2014
This paper presents a low power wind energy conversion system (WECS) based on a permanent magnet synchronous generator and a high power factor (PF) rectifier.
L.G. González, Figueres Amorós, Emilio, Carranza Castillo, Oscar, G. Garcerá, O. Carranza, González Morales, Luis Gerardo, E. Figueres, Garcerá, Gabriel   +7 more
core   +1 more source

Dynamic modeling of DC-DC converters with peak current control in double-stage photovoltaic grid-connected inverters [PDF]

, 2011
In photovoltaic (PV) double-stage grid-connected inverters a high-frequency DC-DC isolation and voltage step-up stage is commonly used between the panel and the grid-connected inverter.
González-Medina, Raúl, Figueres Amorós, Emilio, Emilio Figueres, Gabriel Garcerá, Jesús Sandia, Garcerá, Gabriel, Raúl González-Medina, Sandia Paredes, Jesús   +7 more
core   +1 more source

PWM ZCS DC Motor Drive and DC Power Supply

, 2011
Following the extension and increase in capacity of power electronic elements, many convertors with special applications have been designed. Convertors such as rectifiers, AC and DC power supplies, AC and DC drivers and so on. At present, optimization of
Montazeri, Bardia; Department of Electrical Engineering, Islamic Azad University, Iran
core   +1 more source

Very high step‐down coupled inductor two‐phase buck converter with single magnetic element and inherent clamp voltage capability

IET Power Electronics
This paper proposed a new two‐phase high step‐down DC–DC converter is proposed. This converter is derived from the two‐phase series‐capacitor converter. The proposed converter replaces the series capacitor with a new structure that integrates Valley‐Fill
Ahmad Ghamsari Esfahani, Ehsan Adib
doaj   +1 more source

End‐to‐End Sensing Systems for Breast Cancer: From Wearables for Early Detection to Lab‐Based Diagnosis Chips

Advanced Materials Technologies, EarlyView.
This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane, Lyn I. Jones, Richard M. Martin, Helen Winter, Faezeh Arab Hassani   +4 more
wiley   +1 more source

Ripple‐Free Input Current Quadratic Converter Based on Watkin–Johnson Topology

IET Power Electronics
This article proposes a power electronics converter capable of providing high voltage gain while keeping a high‐quality input current ripple operating with low duty cycle. The technique for achieving the zero input current ripple at a selected duty cycle
Brenda Lizeth Reyes‐García, Pedro Martín García‐Vite, Hector R. Robles‐Campos, Marco Antonio Coronel‐García, Julio C. Rosas‐Caro, Francisca Hernández Angel   +5 more
doaj   +1 more source

Fully 3D‐Printed Wave‐Wound Electromagnetic Motors

Advanced Materials Technologies, EarlyView.
This work presents the first fully 3D‐printed wave‐wound electromagnetic motors, which are created using conductive nanoparticle inks, carbon‐filled nylon polymers, and surface mount components. These motors can achieve a stall torque of 7.62N·mmA−1$7.62 \nobreakspace N{\cdot }mm A^{-1}$ and efficiency of 28.2 %, which approaches the performance of ...
Joseph Schwalbe, Sebastian Mettes, Eduardo Francke, Kenneth W. Allen, Yi Chen Mazumdar   +4 more
wiley   +1 more source

Upcycling Compact Discs Into Ultra‐Stable, Flexible, and Stretchable Nanoporous Gold Electrodes for Enhanced Biosensing Performance

Advanced Materials Technologies, EarlyView.
This article highlights the development of robust and high‐performance flexible and stretchable biosensors that maintain long‐term functionality and optimal electrical conductivity under mechanical deformation, utilizing sustainable and cost‐effective manufacturing principles.
Mousa H. Aldosari, Ahyeon Koh
wiley   +1 more source