Results 181 to 190 of about 3,886 (229)

Genetic Algorithm for Optimized Design of Flyback Transformers

2020 21st International Symposium on Electrical Apparatus & Technologies (SIELA), 2020
The paper presents an approach into designing transformers for flyback converters. The approach is based on the concept of computer aided design, where at its core is the utilization of a genetic algorithm. The genetic algorithm allows for optimal selection of critical transformer components and parameters, where the objective function - based on user ...
Angel Marinov, Emilian Bekov, Firgan Feradov, Toncho Papanchev   +3 more
openaire   +1 more source

Analysis and design of the flyback transformer

IECON'03. 29th Annual Conference of the IEEE Industrial Electronics Society (IEEE Cat. No.03CH37468), 2004
A practical design method, which is based on the current shape, is presented to achieve the appropriate parameters of the flyback transformer. Through this method, a practical transformer is achieved, and its performance is verified by a step-up flyback converter, experimental waveforms and result are presented.
null Xiangjun Zhang, null Hankui Liu, null Dianguo Xu   +2 more
openaire   +1 more source

A transformer assisted ZVS scheme for flyback converter

Twentieth Annual IEEE Applied Power Electronics Conference and Exposition, 2005. APEC 2005., 2005
This paper presents a novel zero-voltage-switching (ZVS) scheme for flyback converter. The principle of operation of the converter is analyzed in detail. A comparatively small assisted transformer is in series with the main transformer. The ZVS conditions are achieved when the current across the magnetizing inductance of assisted transformer is bi ...
null Shijie Chen, null Yilei Gu, null Zhengyu Lu, null Zhaoming Qian, null Wenxi Yao   +4 more
openaire   +1 more source

6.4: 15‐68KHz Flat Spiral‐Winding Flyback Transformer

SID Symposium Digest of Technical Papers, 2003
Abstract A 15‐68KHz Flat spiral‐winding Flyback transformer features a HV ringing ratio of 3%
N. Z. Chang, GuoEn Liang, Q. Fan, Kern Chang   +3 more
openaire   +1 more source

Active-clamping ZVS flyback converter employing two transformers

2007 International Aegean Conference on Electrical Machines and Power Electronics, 2007
This paper presents a two-transformer active- clamping zero-voltage-switching (ZVS) flyback converter, which is mainly composed of two active-clamping flyback converters. [1]-[2] By utilizing two separate transformers[3], the proposed converter allows a low-profile design to be readily implemented while retaining the merits of a conventional single ...
null Jin-Yuan Lin, null Chung-Yi Lin, null Yu-Kang Lo   +2 more
openaire   +2 more sources

Novel winding loss analytical model of flyback transformer

2006 37th IEEE Power Electronics Specialists Conference, 2006
A novel winding loss model of Flyback transformer for loss calculation is proposed. With this model, the winding losses can be divided into transformer loss and inductor loss by decomposing the total winding currents into two components, that is, transformer current, or T-component and inductor current, or L-component, which are orthogonal in continued
Zengyi Lu, Wei Chen
openaire   +1 more source

Magnetic Circuit of Flyback Transformers and Relevant Measurements

IEEE Transactions on Consumer Electronics, 1983
The magnetic circuit of flyback transformers of television receivers is analyzed. Formulas for the number of turns of primary coil and the thickness of the air gap are derived. Then the requirements on the U-cores are discussed. Various measurements may be made with a simple line output circuit.
Zuxun Ying, Zhensheng Zhu
openaire   +1 more source

Flyback converter with a stepped air-gap transformer

EPE Journal, 2018
In low power applications with isolation requirements (e.g. notebook adapters), the flyback converter is a commonly used converter topology.
Panagiotis Mantzanas, Markus Barwig, Daniel Kuebrich, Thomas Duerbaum   +3 more
openaire   +1 more source

Bidirectional chopper using cell voltage equalizing with flyback transformer

IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society, 2013
Recently, the technology on electric vehicle (EV) is more and more focused. In order to control the motor driving, power conversion circuits are applied, and as the energy storage, rechargeable battery and electric double layer capacitor (EDLC) are generally used.
Tasuku Anno, Hirotaka Koizumi
openaire   +1 more source

Copper losses of flyback transformer: search for analytical expressions

IEEE Transactions on Magnetics, 2003
Because analytical expressions are required to run optimization software, this subject is very topical. This work uses equivalent permeability to homogenize the winding structure and approximations for the window field. A progressive approach leads to the needed expressions for a transformer built around a gapped ferrite core. At every step, analytical
Larouci, Cherif, Keradec, Jean-Pierre, Ferrieux, Jean-Paul, Gerbaud, Laurent, Roudet, James   +4 more
openaire   +2 more sources