Results 261 to 270 of about 8,777,763 (297)
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Zero-current-transition PWM DC–DC converters using new zero-current-switching PWM switch cell
IEE Proceedings - Electric Power Applications, 2006A new family of zero-current-switching (ZCS) pulsewidth-modulated (PWM) converters, which uses a new ZCS PWM switch cell, is presented. 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 turn-on and turn-off ...
C.-M. Wang, C.-H. Su, C.-W. Tao
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A new zero-current-switching bridgeless PFC
2010 1st Power Electronic & Drive Systems & Technologies Conference (PEDSTC), 2010This paper presents a new ZCS single phase bridgeless PFC which uses an auxiliary circuit for achieving zero current switching conditions for all switches of conventional bridgeless PFC. The input current is controlled by a peak current controller and output voltage is controlled with a limited band pi controller.
M. Ramezani, S. M. Madani
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Zero Current Synchronization of Opening Switch Contacts
IEEE Transactions on Components, Hybrids, and Manufacturing Technology, 1986Thermostatic controls switching ac loads at 220 V, 50 Hz consist of a slowly moving thermally activated prime mover operating randomly on a small snap-action switch. An experimental study on the opening characteristic of the snap-action switch has shown that the point on the current wave at which contact separation occurs becomes nonrandom on its ...
P. White, D. Mapps, G. Rossi
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An improved HERIC inverter with zero-current-switching
2017 IEEE Electrical Power and Energy Conference (EPEC), 2017In this paper, an improved HERIC inverter is proposed. It makes most switching devices operate at zero-current-switching state, by only adding auxiliary inductors on the freewheeling branch. Meanwhile, the dead-time is not required and the modulation of the system is simplified.
Jian Yang +5 more
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Resonant IGCT Soft-Switching: Zero-Voltage Switching or Zero-Current Switching?
IEEE Transactions on Power Electronics, 2022Gabriele Ulissi +4 more
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Three-phase sinusoidal current rectifier with zero-current switching
IEEE Transactions on Power Electronics, 1995This paper presents the application of zero-current switching in a three-phase rectification scheme with nearly sinusoidal line currents. The principle of third harmonic current circulation is used to reduce the distortion in the line currents. Zero-current switching is accomplished with the use of only two switches.
M. Rastogi, N. Mohan, C.P. Henze
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Zero-current-switching multilevel modular switched-capacitor dc-dc converter
2009 IEEE Energy Conversion Congress and Exposition, 2009This paper presents a quasi-resonant technique for multilevel modular switched-capacitor circuit (MMSCC) to achieve zero-current-switching (ZCS) without increasing cost and sacrificing reliability. This zero-current-switching multilevel modular switched-capacitor circuit (ZCS-MMSCC) employs the stray inductance existing in the circuit as the resonant ...
Dong Cao, Fang Zheng Peng
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A study of IGBT turn-off behavior and switching losses for zero-voltage and zero-current switching
[Proceedings] APEC '92 Seventh Annual Applied Power Electronics Conference and Exposition, 2003The switching losses of insulated gate bipolar transistors (IGBTs) with zero voltage and zero current switching are compared with the switching losses of IGBTs with hard switching. The turn-off behavior of the IGBT is studied in detail for both zero voltage and zero current switching. The effect of a reverse current during turn-off is also investigated
K. Chen, T.A. Stuart
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Zero-Current Switching Clamped Current Converter
2021 Brazilian Power Electronics Conference (COBEP), 2021Vinicius Freire Bezerra +2 more
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A zero-voltage zero-current soft switching DC/DC converter
Frontiers of Electrical and Electronic Engineering in China, 2006A novel three-level zero-voltage zero-current switching (ZVZCS) DC/DC converter is proposed in this paper. A tapped-inductor is used to replace the normal output filter inductor, so that the circulating current in the zero-state can be reset to zero. The reset voltage and the reset time can be set conveniently just by simply changing the winding ratio ...
Zheng-shi Wang +3 more
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