Results 81 to 90 of about 194,819 (312)

Analysis of Different PWM Techniques for Enhanced Ultrahigh Gain Z-Network Topology

International Transactions on Electrical Energy Systems
In these modern times, the Z-source inverters (ZSIs) have become a revolutionary invention ever since the year 2002. The pulse-width modulation (PWM) technique used for most of the ZSIs is simple boost control PWM (SBC-PWM), and the SBC-PWM implies for a
Vadthya Jagan, Bhavadish Chary Maheshwaram, Mallesh Usirikapally, Praveen Kumar Balachandran, B. Nagi Reddy, Sankeerthana Mettu, C. Dhanamjayulu, G. Arunkumar, K. C. Saranya, Baseem Khan   +9 more
doaj   +1 more source

A Soft-switched Pwm Interleaved Boost-flyback Converter With Power Factor Correction

Eletrônica de Potência, 2004
This paper proposes a soft switching interleaved Boost-Flyback converter employed as a preregulator stage providing power factor correction. The use of a soft commutation cell allows the main switches to be turned on and off under null current and null ...
Carlos A. Gallo, João A. Corrêa Pinto, Luiz Carlos de Freitas, Valdeir J. Farias, Ernane A. A. Coelho, João Batista Vieira Jr.   +5 more
doaj   +1 more source

Aging Is a Key Driver for Adult Acute Myeloid Leukemia

Aging and Cancer, EarlyView.
Acute myeloid leukemia (AML) is a classical age‐related hematologic malignancy, and a key driver of AML is aging, which profoundly regulates intrinsic factors such as genomic instability, epigenetic reprogramming, and metabolic dysregulation, and alters bone marrow microenvironment.
Rong Yin, Haojian Zhang
wiley   +1 more source

Power factor correction using parallel boost converter [PDF]

, 2011
The increased use of power electronic devices has declined the power quality in terms of introduction of harmonics and lowering of power factor.This is due to their non-linear nature of operation.
Dash, Roma
core  

Design and Practical Implementation of a Parallel-Switched Power Factor Correction Boost Converter

, 2021
In the past years, applications of Power Factor Correction (PFC) boost converter have increased significantly. One recent application field that requires an efficient PFC boost converter is the Wireless Power Transfer system (WPT).
M. Timur Aydemir, Showrov Rahman, Mehmet Akif Ozdemir, ÖZDEMİR, MEHMET AKİF, Andrii Chub, Rahman, Showrov, Yusuf Kosesoy, Kosesoy, Yusuf, Simsek, Oguz, Chub, Andrii, Aydemir, M. Timur, Oguz Simsek   +11 more
core   +1 more source

Empirical Investigation of a Single-phase Input Switched AC-DC Boost Converter with Improved Power Quality

e-Prime: Advances in Electrical Engineering, Electronics and Energy
The Boost converter topology is most widely used for power factor correction (PFC) converters. The conventional passive Boost PFC converter inherently suffers from the lack of controllability and non-ideal characteristics of the diode-bridge rectifier ...
Golam Sarowar, Istiak Ahmed, Ferdous S Azad, Showrov Rahman, Khosru M. Salim   +4 more
doaj   +1 more source

Risk Prediction Models for Recurrence After Curative Treatment of Early‐Stage or Locally Advanced Lung Cancer: A Systematic Review

Aging and Cancer, EarlyView.
This systematic review synthesizes prognostic models for survival and recurrence in resected non‐small cell lung cancer. While many models demonstrate moderate to good discrimination, few are externally validated and reporting quality is variable, limiting clinical applicability and highlighting the need for robust, transparent model development ...
Evangeline Samuel, S. Tissera, E. Paul, J. Zalcberg, R. G. Stirling   +4 more
wiley   +1 more source

Control method for seamless switching in hydrogen energy and pantograph-catenary parallel power supply system

机车电传动, 2022
In order to eliminate the transient process of the hydrogen energy system of the hydrogen power locomotive upon switching between the grid-connected and standalone control modes, a seamless switching control approach for the hydrogen energy and ...
ZHENG Hengliang, HOU Dazhi, SUN Shijie, LIU Wenquan, JIA Limin   +4 more
doaj  

Intelligent Tutoring Systems for Adult Learning in STEM Disciplines

New Directions for Adult and Continuing Education, EarlyView.
ABSTRACT Intelligent tutoring systems (ITS) are reshaping adult learning in STEM by providing adaptive, data‐driven instruction across classrooms, workplaces, and informal environments. In the context of ITS, this article compares generative AI, which creates personalized explanations and practice materials, with explainable AI, which focuses on ...
Jill Zarestky, Amanda R. Lager Gleason
wiley   +1 more source

A Novel Single-Stage Tandem Soft-Switching Converter with Low Input Current Distortion

Inventions, 2018
In order to improve the power factor and reduce the input current harmonics, power factor correction (PFC) converters are utilized. This paper introduces a single-stage continuous conduction mode (CCM) soft-switched power factor correction (PFC ...
Jianming Xu, Bo Qian, Muhammad Humayun
doaj   +1 more source