Results 151 to 160 of about 820,288 (203)

Low loss ferroelectric microwave switch

1962 International Electron Devices Meeting, 1962
A low loss ferroelectric microwave switch has been developed recently for operation at L-band frequencies. The switch is constructed in strip transmission line using (Ba-Sr)TiO 3 as the active element. It is capable of switching in less than 0.1 usec and provides isolation in excess of 20 db with an insertion loss of less than 0.7 db over a band of 20 ...
A.L. Stanford, R.T. Arnold
openaire   +1 more source

Losses in soft-switched and hard-switched voltage inverters

2003 IEEE International Symposium on Industrial Electronics ( Cat. No.03TH8692), 2004
This paper introduces an adequate loss model, based on the experimental results, which can be used to estimate the losses in hard-switched and soft-switched inverters. As an example and considering the use of IGBTs, it compares the losses produced by hard-switched, auxiliary resonant commutated pole (ARCP) and quasi-square-wave (QSW) inverters for ...
M.C. Cavalcanti, E.R. Da Silva, C. Jacobina   +2 more
openaire   +1 more source

Prediction of switching loss variations by averaged switch modeling

APEC 2000. Fifteenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.00CH37058), 2002
An analytical averaged equivalent circuit model is derived revealing how dominant loss mechanisms vary with power converter operating point in a PWM converter. The model is based on the operational characteristics of power diodes and IGBTs. Laboratory experiments support the derived model and confirm that IGBT current tailing and diode reverse-recovery
O. Al-Naseem, R.W. Erickson, P. Carlin
openaire   +1 more source

Switching loss reduction of MOSFET using switching assist circuit

2015 IEEE International Conference on Industrial Technology (ICIT), 2015
This paper describes a new high-efficiency and high-speed switching method of a MOSFET using a switching assist circuit fed by the gate drive power supply. By applying the proposed circuit to a chopper and an inverter, a turn-off time of the MOSFET can be effectively reduced, which allows a higher-frequency operation and reduction of the turn-on loss ...
Toshihiko Noguchi, Munehiro Murata
openaire   +1 more source

Investigation on Switching Energy Losses in Reversely Switched Dynistor

IEEE Transactions on Power Electronics, 2014
This paper presents theoretical and experimental results on the energy loss characteristics of reversely switched dynistor (RSD) under high-current conditions. Theoretical analysis was performed based on a 1-D modified model by taking account into the carrier-carrier scattering effect and auger recombination effect during the conducting process.
Haiyang Wang, Xiaoping He, Weiqing Chen, Linshen Xie, Jingzhi Zhou, Binjie Xue, Fan Guo, Guowei Zhang, Zhiqiang Chen, Zhengzhong Zeng   +9 more
openaire   +1 more source

Soft switching bidirectional DC-DC converter to reduce switching losses

2011 International Conference on Electrical Machines and Systems, 2011
In this paper, soft switching bidirectional DC-DC converter is proposed. The proposed topology is consisted of two auxiliary switch, two resonant capacitors and one resonant inductor compared to conventional bidirectional DC-DC converter. Through employing ZVS(Zero Voltage Switching) and ZCS(Zero Current Switching) methods, switching loss occurs from ...
Il-Ho Lee, Jun-Gu Kim, Jae-Hyung Kim, Chung-Yuen Won, Yong-Chae Jung   +4 more
openaire   +1 more source

Low-loss microwave photonic switching for satellite communication

Optics Letters, 2023
For traditional switching architecture, packet switching performs fine granularity data packet forwarding, but its digital signal processing (DSP) has high power consumption (PC). All-optical switching provides rapid exchange of wavelength resources, which has coarse granularity.
Jiasi Yang, Zhennan Zheng, Hanxiao Xue, Lu Liu, Jiazhen Cai, Chunyu Che, Xinlu Gao, Xinchao Zhao, Shanguo Huang   +8 more
openaire   +2 more sources

A zero switching loss matrix converter

Proceedings of IEEE Power Electronics Specialist Conference - PESC '93, 2002
A low loss bidirectional switch set is proposed for a matrix power converter. The proposed switch is able to turn on at zero current and turn off at zero voltage to achieve almost zero loss and soft switching. Hence, a simple hysteretic current control can now be applied directly to a matrix power converter without adding any additional snubber circuit
C.-T. Pan, T.-C. Chen, J.-J. Shieh
openaire   +1 more source

Low loss soft switching boost converter

2008 13th International Power Electronics and Motion Control Conference, 2008
A new soft switching boost converter is proposed in this paper. The conventional boost converter generates switching losses at turn on and off. Because of those, the whole system efficiency is reduced. The proposed converter utilizes soft switching method using an auxiliary switch and resonant circuit.
So-Ri Park, Sang-Hoon Park, null Chung-Yuen Won, null Yong-Chae Jung   +3 more
openaire   +1 more source

Low-loss all-optical quantum switching

2013 IEEE Photonics Society Summer Topical Meeting Series, 2013
We present a two-input, two-output, single-photon switch prototype that is capable of achieving insertion loss 5 GHz.
Timothy M. Rambo, Kevin McCusker, Yu-Ping Huang, Prem Kumar   +3 more
openaire   +1 more source