Results 261 to 270 of about 237,029 (312)

Multilevel reduced controlled switches AC-DC power conversion cells

2015 IEEE Energy Conversion Congress and Exposition (ECCE), 2015
This paper presents multilevel ac–dc single-phase power conversion cells for applications in which the regenerative operation is either not required or prohibited. The ac primary power source is a single phase from a permanent magnet generator or from an electrical grid.
Joao Paulo Ramos Agra Mello, Cursino Brandao Jacobina, Italo Roger Ferreira Moreno Pinheiro da Silva   +2 more
openaire   +1 more source

High-voltage IC technologies for AC/DC power conversion

2015 IEEE International Conference on Electron Devices and Solid-State Circuits (EDSSC), 2015
The market for AC/DC power converters is growing rapidly, driven largely by the proliferation of portable electronic devices and adoption of LED lighting. This paper provides an overview of one of the most common circuit topologies used for AC/DC conversion and describes the IC technology requirements for these systems.
Don Disney, I L Yong Park, Wen-Cheng Lin, Jongjib Kim   +3 more
openaire   +1 more source

180nm HVIC technology for digital AC/DC power conversion

2017 29th International Symposium on Power Semiconductor Devices and IC's (ISPSD), 2017
A new high-voltage integrated circuit (HVIC) technology has been developed and optimized for AC/DC power conversion applications that require increased digital content. This cost-effective process uses 3.3V CMOS and a 180nm backend process to provide about 10X greater digital circuit density compared to conventional 0.5um 5V CMOS solutions.
Don Disney, Wen-Cheng Lin, XiaoXin Liu, Swapnil Pandey, Jongjib Kim   +4 more
openaire   +1 more source

Study of AC-DC converters with isolated transformers applied to high frequency AC-DC power conversion

2015 6th International Conference on Power Electronics Systems and Applications (PESA), 2015
At high frequency, such as 50 kHz, the behaviors of isolated transformers and diodes in rectifiers are considerably different from ones at low frequency, such as 50 Hz. The analysis and the experiment in this paper show that it suffers from poor power factor and low power output if conventional AC-DC converters with isolated transformer are directly ...
X. D. Xue, J. Mei, Raman S Raghu, J. F. Liu, K. W. E. Cheng   +4 more
openaire   +1 more source

Building Block Converter Module for Universal (AC-DC, DC-AC, DC-DC) Fully Modular Power Conversion Architecture

2007 IEEE Power Electronics Specialists Conference, 2007
This paper presents the configuration and control methods for a building block module suitable for application in a fully modular, AC-DC, DC-AC and DC-DC power conversion architecture, where the modules can be connected in any combination of series and parallel connections and support bidirectional power flow.
Harish K. Krishnamurthy, Raja Ayyanar
openaire   +1 more source

Single Power-Conversion AC--DC Converter With High Power Factor and High Efficiency

IEEE Transactions on Power Electronics, 2014
This paper proposes a single power-conversion ac-dc converter with high power factor and high efficiency. The proposed converter is derived by integrating a full-bridge diode rectifier and a series-resonant active-clamp dc-dc converter. To obtain a high power factor without a power factor correction circuit, this paper proposes a novel control ...
Cho, YW, Kwon, JM, Kwon, BH
openaire   +2 more sources

Power conversion systems for modern ac–dc power systems

European Transactions on Electrical Power, 2011
SUMMARYThis paper discusses the present and future power conversion systems for high voltage direct current transmission systems. It begins with an introduction into the commercially available semiconductor switching devices and future wide bandgap devices specifically silicon carbide devices.
openaire   +1 more source

A Novel Three-Stage Power Electronic Transformer for AC/DC Conversion

2019 IEEE 28th International Symposium on Industrial Electronics (ISIE), 2019
In this paper, a novel three-stage power electronic transformer (PET) is proposed for AC/DC conversion. Compared with the existing PET topologies, the feature of the proposed PET is the decreased number of the power conversion stages. The mixed-frequency synchronous control strategy is also presented, which fulfills unity power factor (UPF) at the AC ...
Hang Zhang, Yaohua Li, Zixin Li, Fanqiang Gao, Cong Zhao, Yujie Hu, Ping Wang   +6 more
openaire   +1 more source

Thermal wattmeter with direct AC/DC power conversion

Proceedings of Conference on Precision Electromagnetic Measurements Digest, 2002
A thermal wattmeter with direct AC power to DC voltage conversion is described. A three-terminal thermoconverter (TTTC) is used for AC/DC power substitution. The TTTC enables simultaneous application of mutually independent current and voltage into the same heater and this way to force phantom power dissipation in this heater.
openaire   +1 more source

ITER magnet power conversion building construction and AC/DC converter installation

Fusion Engineering and Design, 2019
Abstract ITER magnet power supply system, which will be the largest ever built power conversion system, jointly contributed by China and Korea Domestic Agency (DA) for AC/DC converters groups dedicated to the superconductive magnet coils and the associated DC component from Russia Federation.
H. Tan, F. Fortunato, I. Suh, I. Benfatto, Z. Song, S. Liu, J.S. Oh, L. Jiang, S. Kim   +8 more
openaire   +1 more source