Results 21 to 30 of about 867,842 (280)

Relaxed damage threshold intensity conditions and nonlinear increase in the conversion efficiency of an optical parametric oscillator using a bi-directional pump geometry [PDF]

, 2010
A novel bi-directional pump geometry that nonlinearly increases the nonlinear optical conversion efficiency of a synchronously pumped optical parametric oscillator (OPO) is reported.
Baxter, Bjorkholm, Boyd, Boyd, Chandra, Chen, Dunn, Débarre, G. McConnell, G. Norris, Giordmaine, McConnell, Yang   +12 more
core   +1 more source

Identification method of all-operating-point admittance model for wind farms considering frequency-coupling characteristics

International Journal of Electrical Power & Energy Systems
Admittance identification is an effective tool to solve the issue of black-box admittance modeling in wind farms. However, due to the large operating range of wind farms, it is difficult to accurately identify the admittance model of wind farms under all
Zilin Zhang, Wenhua Wu, Zhiwei Xie, Yandong Chen, Yuancan Xu, Shixiang Cao, Zhihao Dai   +6 more
doaj   +1 more source

Analysis and Experiment of the Laser Wireless Energy Transmission Efficiency Based on the Receiver of Powersphere

IEEE Access, 2021
Long-distance wireless energy transmission is realized by photoelectric conversion through lasers and photovoltaic cells. However, existing devices have low transmission power and low transmission efficiency.
Tiefeng He, Libin Zhang, Guoliang Zheng, Can Yang, Meng Wang, Guobing Pan   +5 more
doaj   +1 more source

1.6 W continuous-wave Raman laser using low-loss synthetic diamond [PDF]

, 2011
Low-birefringence ...
Bonner, Gerald M., Burns, David, Dawson, Martin D., Friel, Ian, Geoghegan, Sarah L., Hastie, Jennifer E., Kemp, Alan J., Lubeigt, Walter, Savitski, Vasili G.   +8 more
core   +2 more sources

An improved grid-forming control method with adaptive virtual impedance combining current limitation and transient stability improvement

International Journal of Electrical Power & Energy Systems
The virtual impedance (VI) control method is widely used to limit fault current for grid-forming converter (GFMC). However, in this article, it is found that the VI deteriorates the transient synchronization stability of the GFMC under grid faults.
Xiaoping Zhou, Lei Zhang, Hanting Peng, Lerong Hong, Qianming Xu, Zhen Zhang, Jiakun Shao, Jianchao Ma, Yizhen Hu   +8 more
doaj   +1 more source

A polymer tandem solar cell with 10.6% power conversion efficiency. [PDF]

, 2013
An effective way to improve polymer solar cell efficiency is to use a tandem structure, as a broader part of the spectrum of solar radiation is used and the thermalization loss of photon energy is minimized.
Chen, Chun-Chao, Dou, Letian, Emery, Keith, Gao, Jing, Kato, Takehito, Li, Gang, Moriarty, Tom, Ohya, Kenichiro, Yang, Yang, Yoshimura, Ken, You, Jingbi   +10 more
core   +1 more source

Multi-Source Information Fusion for Environmental Perception of Intelligent Vehicles Using Sage-Husa Adaptive Extended Kalman Filtering

Sensors
With the rapid advancement of intelligent driving technology, multi-source information fusion has become a vital topic in the field of environmental perception.
Yibo Meng, Huifang Kong, Tiankuo Liu
doaj   +1 more source

Soft-switching SiC power electronic conversion for distributed energy resources and storage applications

Journal of Modern Power Systems and Clean Energy, 2019
Power electronic conversion plays an important role in flexible AC or DC transmission and distribution systems, integration of renewable energy resources, and energy storage systems to enhance efficiency, controllability, stability, and reliability of ...
Keyan Shi, Jinyi Deng, An Zhao, Dehong Xu   +3 more
doaj   +1 more source

Efficient low-power terahertz generation via on-chip triply-resonant nonlinear frequency mixing

, 2009
Achieving efficient terahertz (THz) generation using compact turn-key sources operating at room temperature and modest power levels represents one of the critical challeges that must be overcome to realize truly practical applications based on THz. Up to
A. W. Rodriguez, Haus H. A., J. Bravo-Abad, J. D. Joannopoulos, M. Soljačić, P. T. Rakich, S. G. Johnson, Singh S., Taflove A.   +8 more
core   +1 more source

Analysis and suppression method of synchronous frequency resonance for self-synchronizing voltage source inverter

International Journal of Electrical Power & Energy Systems
Self-synchronizing voltage source inverter (SSVSI) can effectively improve grid frequency stability. However, the synchronous frequency resonance (SFR) inevitably exists in SSVSI.
Youze Fu, Yandong Chen, Zhiwei Xie, Zili Wang, Shixiang Cao, Xuyang Li, Xudong Li, Hua Li   +7 more
doaj   +1 more source