Results 211 to 220 of about 11,819 (262)

Alternated forward multi resonant converter

2000 26th Annual Conference of the IEEE Industrial Electronics Society. IECON 2000. 2000 IEEE International Conference on Industrial Electronics, Control and Instrumentation. 21st Century Technologies and Industrial Opportunities (Cat. No.00CH37141), 2002
The high efficiency multi-resonant converter (MRC) is capable of operating at a high frequency because the losses are decreased due to the resonant tank circuit. Such a few MHz high frequency applications provide high power density (W/inch/sup 3/) for the converters. However, the resonant voltage stress across the switch of the resonant tank circuit is
null Won-Seok Oh, null Chang-Sun Kim, null Hee-Jun Kim   +2 more
openaire   +1 more source

EMI examination of symmetric forward converter

4th Annual International Power Electronics, Drive Systems and Technologies Conference, 2013
Power switching converters are sources of electromagnetic interference (EMI) due to the high voltage and current transients. In this paper, the single-switch forward converter topology is modified to achieve symmetric topology. EMI models of regular and symmetric forward converters are extracted taking into account the main parasitic of components and ...
Mohammad Rouhollah Yazdani, Nahid Amini Filabadi, Jawad Faiz   +2 more
openaire   +1 more source

A unity power factor forward converter

Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting, 2003
A novel means of obtaining sinusoidal, unity power factor input currents in switched mode power supplies using minimum additional components is presented. The converter is topologically equivalent to a boost converter cascaded by a forward power converter, but is realized using only a single power stage.
D.M. Divan, G. Venkataramanan, C. Chen
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Investigation of Bifurcation and Chaos in Forward Converter

2007 International Conference on Mechatronics and Automation, 2007
This paper concentrate on the numerical study and simulation experiment of bifurcation and chaos in the forward converter, which is different from the previous investigated work in DC-DC converter without power transformer. First, the simplified model of transformer is built. Then, the iterative map for forward converter is derived. Based on the model,
Chuang Bi, Jingmei Wang, Zhongwen Lan, Kelin Jia, Tong Hu   +4 more
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The Double Forward Converter with Synchronous Rectification

Applied Mechanics and Materials, 2015
In many switching power supply converters, diode rectifiers are used to obtain the DC output voltage. The conduction loss of these diodes rectifier contributes significantly to the overall power loss, especially for low-voltage, high-current converter applications.
Kumkrong Krajam, Sakorn Po-Ngam
openaire   +1 more source

Modeling and Control of Forward Converter

Applied Mechanics and Materials, 2011
The average model of the forward converter is build with the state-space average method. The open-loop transfer function model is deduced in detail according to the average model of the forward converter, the controller is designed based frequency domain by the type III compensation network.
openaire   +1 more source

A new ZC-ZVS forward converter

Proceedings of Applied Power Electronics Conference. APEC '96, 2002
This paper presents a steady-state analysis with complete characterization of ZCS-ZVS forward power converter operation. The nondissipative snubber associated with a forward power converter provides the soft commutation switching. The proposed approach allows building a converter with high frequency operation.
A.A. Pereira, E.A.A. Coelho, V.J. Farias, L.C. de Freitas, J.B. Vieira   +4 more
openaire   +1 more source

EMI Reduction by Chaos in the Forward Converter

2007 8th International Conference on Electronic Measurement and Instruments, 2007
This paper presents a voltage-model controlled forward converter circuit which is different from the previous investigated chaotic circuits. The power transformer is modeled in Pspice program. On basis of the model, we built a simulation circuit of the forward converter. When the converter is operated chaotically, the spectrum peaks of inductor current
Bi Chuang, Wang Jingmei, Jia Kelin, Wu Chang   +3 more
openaire   +1 more source

Design of the Controller for PCMC Forward Converters

Advanced Materials Research, 2012
The work characteristics of forward converters are described. Presented the theoretical and practical details by means of the state space averaging method, the small signal model of forward converters under peak current mode controlled is constructed. The design of the controller is given to be used in this converter with the maximum control bandwidth ...
Wen Zhang, Jia Xiang Xue, Hong Bo Jiang
openaire   +1 more source

Simulation of PWM Forward Converter

1997
By this time, it is fair to say that any scientific topic, be it technical or social, can be simulated, or modeled, with a computer; provided the necessary mathematical equations are available and absolute accuracy is not unreasonably expected.
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