Results 101 to 110 of about 989 (143)

An improved lossless passive snubber cell for PFC boost converter

2013 3rd International Conference on Electric Power and Energy Conversion Systems, 2013
An improved lossless passive snubber cell for power factor correction (PFC) boost converter is proposed. All of the semiconductor devices in the boost converter are operated under soft switching condition. The switch operates at zero current switching (ZCS) turn on and zero voltage switching (ZVS) turn off.
Yesilyurt, Huseyin, BODUR, Hacı, Ozel, Hatice   +2 more
openaire   +2 more sources

Soft-switching-interleaved power factor correction converter with lossless snubber

IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society, 2013
This paper describes a soft-switching-interleaved power factor correction (PFC) converter. The proposed PFC converter reduces the input-current ripple by using an interleave-control method and realizes high efficiency through the soft-switching operation of all switching devices, without requiring a large auxiliary resonant circuit. In order to confirm
Itaru Ando, Kodai Abe, Masashi Ochiai, Kiyoshi Ohishi   +3 more
openaire   +1 more source

A boost converter with lossless snubber under minimum voltage stress

APEC. Seventeenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.02CH37335), 2003
A passive lossless turn-on/turn-off snubber network is proposed for the boost PWM converter. Besides the benefit of small number of added components, all the devices block the voltage no more than the output DC voltage. The operation principle and design guideline is presented.
null Wei Dong, null Qun Zhao, null Jinjun Liu, F.C. Lee   +3 more
openaire   +1 more source

Improvements to the passive lossless snubbers for power bridge legs

Journal of Electronics (China), 2001
The paper considers three common snubber circuits used on gate turn-off thyristor and/or insulated gate bipolar transistor inverters. The three snubbers are passive lossless circuits for power bridge legs, and the improvements and modifications to these snubber circuits are presented.
Xiangning He, Yuwen Yang, Zhaoming Qian, Barry W. Williams, Stephen J. Finney   +4 more
openaire   +1 more source

A novel passive lossless snubber for high power multilevel inverters

APEC. Seventeenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.02CH37335), 2003
A novel passive lossless snubber circuit for multilevel inverters is proposed in the paper. The topology of it is simple and requires no extra control. In order to reduce the high voltage stress on power switches of multilevel inverters with the proposed snubber circuit, an improved snubber circuit is presented by adding separate low-power DC sources ...
null Hongyang Wu, null Yan Deng, null Rongxiang Zhao, null Xiangning He   +3 more
openaire   +1 more source

Novel passive lossless soft-clamped snubber for voltage source inverters

Proceedings of Applied Power Electronics Conference. APEC '96, 2002
A novel passive lossless soft-clamped snubber circuit for voltage source inverters is proposed. The energy trapped in the inductive turn-on snubber is recovered into the DC supply and load, without any active devices, associated control circuitry or resistors.
X. He, S.J. Finney, B.W. Williams, Z. Qian   +3 more
openaire   +1 more source

Active-Clamp Forward Converter With Lossless-Snubber on Secondary-Side

IEEE Transactions on Power Electronics, 2019
This paper proposes a novel active-clamp forward converter (ACFC) with a lossless-snubber on the secondary-side, which combines a resonant capacitor and a clamping diode with an output inductor in parallel. The conventional ACFC achieves zero-voltage-switching on switches of the primary-side during dead time for reducing the switching loss and voltage ...
Jing-Yuan Lin, Sih-Yi Lee, Chung-Yi Ting, Fu-Ciao Syu   +3 more
openaire   +2 more sources

Novel passive lossless turn-on snubber for voltage source inverters

IEEE Transactions on Power Electronics, 1997
A novel passive lossless turn-on snubber with a soft-clamped turn-off snubber circuit for voltage source inverters is proposed. The energy trapped in the snubber is recovered into the DC supply and load without any active devices, associated control circuitry, or resistors.
null Xiangning He, S.J. Finney, B.W. Williams, null Zhao-Ming Qian   +3 more
openaire   +1 more source

A push-pull voltage source inverter with lossless snubber circuits

Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475), 1999
This paper proposes a push-pull voltage source inverter with lossless snubbers. The output voltage waveform of the inverter can be modulated as either square wave or SPWM. The energy stored in the leakage inductor of the transformer can be fed back to the DC supply through the snubber circuits when main switching devices change their states.
C.Y. Liu, J.G. Zhu, V.S. Ramsden
openaire   +1 more source

A novel four-level PFC circuit with passive lossless snubber

2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551), 2004
For high power and/or high voltage applications, in order to reduce the voltage of switches and the size of the inductor, and to improve converter efficiency and power density, the single-phase four-level power factor correction converter is presented in the paper, its operation principle and control method are analyzed in detail. A 2 KW four-level PFC
null Hongyan Wang, null Lifeng Chen, null Hong Jiang, null Xiangning He   +3 more
openaire   +1 more source