Results 251 to 260 of about 8,777,763 (297)

A new zero-current-switching constant switching frequency boost converter

1993 IEEE International Symposium on Circuits and Systems, 2002
The authors present a new boost topology which can be operated in constant switching frequency and zero-current-switching. In addition, the voltage stresses on the active switches are as low as the traditional boost pulse width modulated (PWM) converter. The control curves are derived through the normalized state-plane trajectory.
L. Yang, D. Long, Y. Zhang, C. Q. Lee
openaire   +2 more sources

Analysis and Design of the Resonant Current of the LCLC Resonant Converters with Consideration of Zero-Voltage Switching and Zero-current Switching

2019 International Vacuum Electronics Conference (IVEC), 2019
The LCLC resonant converters are widely used in the Electronic Power Conditioner (EPC) in a Travelling-wave Tube Amplifier (TWTA) due to the advantage of Zero-Voltage-Switching (ZVS) and Zero-Current-Switching (ZCS). However, in the physical circuit, problems such as non-Zero-Current-Switching and reverse resonant current appear and the efficiency ...
Bin Zhao, Gang Wang, Dong Lei Wang
openaire   +1 more source

Zero current switching Type Class DE rectifier

IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society, 2012
This paper introduces a zero current switching (ZCS) type Class DE rectifier, along with design procedure, simulation and experimental results. The feature of ZCS type Class DE rectifier is that the diodes maintain ZCS and zero current derivative switching (ZCDS), therefore, switching losses and switching noise are reduced.
Tsukasa Misawa, Kazuaki Fukui, Hirotaka Koizumi   +2 more
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A new zero current switching resonant Buck converter

2011 24th Canadian Conference on Electrical and Computer Engineering(CCECE), 2011
In this paper a zero current switching resonant Buck converter as a soft-switching DC-DC converter is presented In this buck type converter, all semiconductor elements are soft switched. Also, the converter benefits from a very simple control method. Theoretical equations are derived and confirmed through simulation results.
A. Emrani, Hosein Farzanehfard
openaire   +2 more sources

A family of zero-current-switching (ZCS) PWM converters using a new zero-current switching auxiliary circuit

The Fifth International Conference on Power Electronics and Drive Systems, 2003. PEDS 2003., 2004
A new family of zero-current-switching (ZCS) pulsewidth-modulated (PWM) converters which uses a new ZCS PWM switch cell is presented in this paper. The main switch and auxiliary switch operate at zero-current-switching turn on and turn off, and the all passive semiconductor devices in the ZCS-PWM converter operate at zero-voltage-switching (ZVS) turn ...
null Chien-Ming Wang, null Huang-Jen Chiu   +1 more
openaire   +1 more source

New family of zero-current-switching PWM converters using a new zero-current-switching PWM auxiliary circuit

IEEE Transactions on Industrial Electronics, 2004
A new family of zero-current-switching (ZCS) pulsewidth-modulated (PWM) converters using a new ZCS-PWM auxiliary circuit is presented in this paper. The main switch and auxiliary switch operate at zero-current-switching turn on and turn off, and the all passive semiconductor devices in the ZCS-PWM converters operate at zero-voltage-switching (ZVS) turn
openaire   +1 more source

Zero-current zero-voltage switching for on-load tap changers

5th IET International Conference on Power Electronics, Machines and Drives (PEMD 2010), 2010
We present a new on-load tap changer (OLTC) design that provides the traditional advantages of the semiconductor-assisted OLTC over the classic, mechanical OLTC. The design provides zero-current, zero-voltage operation of both diverter switches at all times, eliminating contact wear due to arcing.
D.J. Rogers, T.C. Green
openaire   +1 more source

Zero-voltage and zero-current soft-switching PWM inverter

2005 European Conference on Power Electronics and Applications, 2005
This paper presents a zero-voltage and zero-current soft-switching (ZVZCS) PWM three phase inverter with a single auxiliary resonant commutation cell. All of the main switches in the three-phase inverter side can be turned on and turned off under zero-voltage and zero-current condition. The operating principle of proposed commutation cell is described,
E. Hiraki, T. Tanaka, M. Nakaoka
openaire   +1 more source

A ZERO-CURRENT SWITCHING PWM FLYBACK CONVERTER WITH LOW CURRENT STRESS

Journal of Circuits, Systems and Computers, 2008
An actively current clamped zero-current switching (ZCS) flyback converter is proposed in this paper. ZCS condition is obtained for all transistors for reducing switching loss and electromagnetic interference. With the current clamping technique, current stress of the converter is low.
Y. P. Benny Yeung, Herbert H. C. Iu
openaire   +2 more sources

A Novel Zero-Voltage and Zero-Current-Switching Full-Bridge PWM Converter

IEEE Transactions on Power Electronics, 2004
A novel zero-voltage and zero-current-switching (ZVZCS) full-bridge pulse-width modulation converter is proposed. The ZCS condition of the lagging-leg is obtained by a simple secondary auxiliary circuit resetting the primary current during the freewheeling stage. The auxiliary circuit's capacitor is charged by the center tape of the secondary through a
null SongTingTing, null HuangNianci
openaire   +1 more source