Results 221 to 230 of about 15,145 (245)
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A Novel ZVS-PWM Single-Phase Inverter Using a New Simple ZVS-PWM Commutation Cell
2007 2nd IEEE Conference on Industrial Electronics and Applications, 2007A new zero-voltage-switching (ZVS) pulsewidth-modulated (PWM) single-phase inverter using a simple ZVS-PWM commutation cell is presented in this paper. Except for the auxiliary switches, all active and passive semiconductor devices in the ZVS-PWM single-phase inverter operate at ZVS turn on and turn off.
Chien-Ming Wang +4 more
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Double-Ended ZVS Half-Bridge Zeta Converter
2007 IEEE Power Electronics Specialists Conference, 2007A new double-ended type zero-voltage switching (ZVS) half-bridge zeta (HBZ) converter employing a double-ended rectifier (DER) is proposed. The proposed DER for the HBZ converter provides a bidirectional powering path in the rectifier. As a result, the improved voltage waveform of the rectifier reduces the output filter size and voltage stresses on ...
Park, KB +3 more
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Analysis and Derivations for a Family ZVS Converter Based on a New Active Clamp ZVS Cell
IEEE Transactions on Industrial Electronics, 2008A new zero voltage switching (ZVS) cell is proposed based on the active clamping technique. With a small clamping diode in the cell, the voltage ringing caused by the auxiliary inductor and the parasitic capacitance of the diode is eliminated, and therefore, the circulating loss is minimized.
Xinke Wu +3 more
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1997
Als Hurde, als burokratisches Hindernis auf dem Weg zum Studienplatz wird sie haufig angesehen, die Zentralstelle sr die Vergabe von Studienplatzen in Dortmund, besser bekannt unter dem Kurzel ZVS. Bezogen auf die wirtschaftswissenschaftlichen Studienmoglichkeiten haben der Ausbau von Studienplatzen und die rucklaufige Nachfrage allerdings diese Hurde,
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Als Hurde, als burokratisches Hindernis auf dem Weg zum Studienplatz wird sie haufig angesehen, die Zentralstelle sr die Vergabe von Studienplatzen in Dortmund, besser bekannt unter dem Kurzel ZVS. Bezogen auf die wirtschaftswissenschaftlichen Studienmoglichkeiten haben der Ausbau von Studienplatzen und die rucklaufige Nachfrage allerdings diese Hurde,
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Single phase ZVS PWM NPC inverter
XI Brazilian Power Electronics Conference, 2011This paper presents a zero-voltage, pulse width modulated, NPC inverter, with active voltage clamping using only two auxiliary switches. The structure is particularly simple and robust. It is very attractive for high-power applications, single or multiple phases, due to neutral point accessible at the NPC topology.
Eduardo Maldaun Barreto +2 more
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Gate driver circuit for ZVS mode
2016 XXV International Scientific Conference Electronics (ET), 2016This paper considers problems related with the switching losses in the power supply units, based on a high frequency inverters. Different ways to overcome some of the problems are discussed. A ZVS gate driver circuit for transistors in resonant DC/DC converter is proposed. The influence of the snubber capacitors value is studied.
Yasen Kostadinov Madankov +3 more
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Studienplatzvergabe durch die ZVS
1999Der Studiengang Rechtswissenschaft gehort zu den zahlenmasig besonders grosen Studiengangen. Hinter den Wirtschaftswissenschaftlern liegen die Juristen mit rund 111.000 Studenten (Stand: Wintersemester 1995) auf Platz zwei der Rangliste. Jahrlich stehen an den 40 anbietenden Universitaten den 21.600 Bewerbern rund 17.500 Studienplatze zur Verfugung ...
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2021
At the end of the 17th century, a small enameled cross was discovered in one of the royal graves in Saint Bendt's church in Danish Ringsted. According to the record of the administrator of the Danish Royal Treasury, the cross was found in the grave of the Danish Queen Dagmar - the daughter of the King of Bohemia, Ottokar I (+1230).
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At the end of the 17th century, a small enameled cross was discovered in one of the royal graves in Saint Bendt's church in Danish Ringsted. According to the record of the administrator of the Danish Royal Treasury, the cross was found in the grave of the Danish Queen Dagmar - the daughter of the King of Bohemia, Ottokar I (+1230).
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A new ZC-ZVS forward converter
Proceedings of Applied Power Electronics Conference. APEC '96, 2002This 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 +4 more
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Newly Designed ZVS Multi-Input Converter
IEEE Transactions on Industrial Electronics, 2011A newly designed zero-voltage-switching (ZVS) multi-input converter is proposed in this paper. The converter can boost the different voltages of two power sources to a stable output voltage. An auxiliary circuit is employed for achieving turn-on ZVS of all switches in the proposed converter.
Rong-Jong Wai +3 more
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