Results 291 to 300 of about 766,223 (354)

Resonant LLC DC–DC Converter Employing Fixed Switching Frequency Based on Dual-Transformer With Wide Input-Voltage Range

IEEE transactions on power electronics, 2021
In this article, a dual-transformer-based LLC resonant converter is proposed, which is a hybrid combination of a full-bridge and half-bridge LLC circuits.
Salman Khan, Deshang Sha, Xiangshuai Jia, Sunbo Wang   +3 more
semanticscholar   +1 more source

A High-Efficiency High-Density Three-Phase CLLC Resonant Converter With a Universally Derived Three-Phase Integrated Transformer for On-Board-Charger Application

IEEE transactions on power electronics
This article proposed a universal method of integrating magnetizing inductance with built-in leakage inductance based on multiple perfectly coupled transformers (PCTs).
Feng Jin, Ahmed Nabih, Tianlong Yuan, Qiang Li   +3 more
semanticscholar   +1 more source

Research on the deterioration process of electrical contact structure inside the ±500 kV converter transformer RIP bushings and its prediction strategy

IET Generation, Transmission & Distribution, 2019
Extra high-voltage converter transformer resin impregnated paper (RIP) bushing is used as the outlet device of the converter transformer, its safe operation is directly related to the reliability of the power system.
H. Tian, Peng Liu, Shiyi Zhou, Qingyu Wang, Zehua Wu, Jinyin Zhang, Zongren Peng   +6 more
semanticscholar   +1 more source

New Criterion of Converter Transformer Differential Protection Based on Wavelet Energy Entropy

IEEE Transactions on Power Delivery, 2019
For converter transformer, current differential protection fails to operate in the case of internal fault occurs during dc bias or inrush current. Therefore, a new criterion is proposed in this paper to construct a new differential protection scheme. The
Yujia Deng, Sheng Lin, L. Fu, Kai Liao, Lei Liu, Zhengyou He, Shan Gao, Yilu Liu   +7 more
semanticscholar   +1 more source

Study of Insulation Material Properties Subjected to Nonlinear AC–DC Composite Electric Field for Converter Transformer

IEEE transactions on magnetics, 2019
The nonlinear ac–dc composite electric field in the winding area of the converter transformer was studied by considering the frequency and temperature dependence of the insulation materials in this paper. First, the relative permittivity and conductivity
Qingpeng Wang, B. Bai, Dezhi Chen, T. Fu, Q. Ma   +4 more
semanticscholar   +1 more source

A Novel Interleaved High Step-Up Converter With Built-In Transformer Voltage Multiplier Cell

IEEE transactions on industrial electronics (1982. Print), 2021
In this article, we propose a novel interleaved high step-up converter. The proposed converter integrates the built-in transformer voltage multiplier cell (VMC) to the interleaved boost converter with voltage lift capacitor. The voltage gain is increased
T. Nouri, Naser Vosoughi Kurdkandi, M. Shaneh   +2 more
semanticscholar   +1 more source

Design and Analysis of a High-frequency CLLC Resonant Converter with Medium Voltage insulation for Solid-State-Transformer

Applied Power Electronics Conference, 2021
The isolated DC/DC converter is the key component in high-frequency medium-voltage solid-state transformer. This paper presents a comprehensive design of a CLLC converter, including the design of transformer and resonant tank.
Chunyang Zhao, Yi-Hsun Hsieh, F. Lee, Qiang Li   +3 more
semanticscholar   +1 more source

Piezoelectric transformer converter with frequency control

Proceedings of INTELEC 95. 17th International Telecommunications Energy Conference, 2002
An efficient piezoelectric transformer (PT) power converter with frequency control is presented. The optimum-designed reactance components are able to keep power efficiency high while controlling the output voltage for some load variation. An implemented PT power converter with frequency control achieves an efficiency higher than 75% at V/sub o/=5 V, I/
T. Zaitsu, T. Shigehisa, T. Inoue, M. Shoyama, T. Ninomiya   +4 more
openaire   +1 more source

Matrix transformer for LLC resonant converters

2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC), 2013
In this paper, a high efficiency high power density matrix transformer structure for LLC resonant converters is proposed. Matrix transformer is help to reduce leakage inductance and the AC resistance of windings. Flux cancellation method is utilized to reduce core size and loss.
Daocheng Huang, Shu Ji, Fred. C. Lee
openaire   +1 more source

Resonant converter transformer design and optimization

2011 IEEE Energy Conversion Congress and Exposition, 2011
A new, low-profile, low-loss resonant converter transformer is proposed. Its design allows the absorption of the series inductor of the resonant converter through its leakage inductance. The windings are concentric with ferrite between them to control the leakage inductance.
Garet E. Gamache, Charles R. Sullivan
openaire   +1 more source