Results 21 to 30 of about 7,238,828 (307)

Model Reduction of DFIG Wind Turbine System Based on Inner Coupling Analysis

Energies, 2018
The doubly-fed induction generator (DFIG) wind turbine system, which is composed of the wind turbine, generator, rotor-side converter, grid-side converter, and so on, is a typical multi-time scale system. The dynamic processes at different time scales do
Pingping Han, Yu Zhang, Lei Wang, Yan Zhang, Zihao Lin   +4 more
doaj   +1 more source

Tribological behaviors of laser textured surface under different lubrication conditions for rotary compressor

Scientific Reports, 2023
Tribological behaviors of laser textured surface with elliptical dimples were experimentally compared with that of the smooth one under different lubrication conditions, including the poor-oil, rich-oil and dry lubrication.
Shaopeng Ding, Huijun Wei, Ouxiang Yang, Liying Deng, Di Mu   +4 more
doaj   +1 more source

Influence of Particle Size Distribution on the Physical Characteristics of Pore-Filling Hydrate-Bearing Sediment

Geofluids, 2021
Nature gas hydrates (NGHs) are regarded as a potential alternative energy source due to their huge reserves and wide distribution. According to the geophysical surveys, the pore-filling hydrates occupy a large proportion of the global hydrate reserves ...
Peng Wu, Shenghua Yang, Le Wang, Xiangge Song, Yanghui Li   +4 more
doaj   +1 more source

Experimental Study on Mechanical Properties of Hydrate-Bearing Sand: The Influence of Sand-Water Mixing Methods

Energies, 2021
Laboratory-synthesized specimens are employed for an experimental study on the mechanical properties of hydrate-bearing sediments (HBS) due to the difficulty of field coring.
Weiguo Liu, Dedong Pan, Shi Shen, Zeshao You, Yuechao Zhao, Xiang Sun   +5 more
doaj   +1 more source

THE CONSERVATION OF ENERGY AND CONSERVATIVE GYNÆCOLOGY. [PDF]

Journal of the American Medical Association, 1885
Read before the Boston Gynaecological Society. There may seem to be some incongruity in the caption of this paper, a juxtaposition of terms that can have no possible relation each to the other; or, it may be, an entire misconception of what is meant by the Conservation of Energy.
openaire   +2 more sources

An Improved ELM Model Based on CEEMD-LZC and Manifold Learning for Short-Term Wind Power Prediction

IEEE Access, 2019
The nonlinear characteristics of wind power series and random fluctuation characteristics of wind resources have a harmful effect on stability of wind power prediction.
Chao Zhang, Ming Ding, Weisheng Wang, Rui Bi, Leying Miao, Haibiao Yu, Lian Liu   +6 more
doaj   +1 more source

Principle and Feasibility Study of Proposed Hydrate-Based Cyclopentane Purification Technology

Energies, 2023
The separation of azeotropic mixtures has conventionally been one of the most challenging tasks in industrial processes due to the fact that components in the mixture will undergo gas–liquid phase transition at the same time.
Xianbing Hu, Lingjie Sun, Chengyang Yuan, Man Li, Hongsheng Dong, Lunxiang Zhang, Lei Yang, Jiafei Zhao, Yongchen Song   +8 more
doaj   +1 more source

Research on Distributed Power Capacity and Site Optimization Planning of AC/DC Hybrid Micrograms Considering Line Factors

Energies, 2018
With the rapid development of AC/DC hybrid microgrids and the widespread use of distributed power resources, planning strategies for microgrids with high-density distributed power generation have become an urgent problem.
Hao Pan, Ming Ding, Anwei Chen, Rui Bi, Lei Sun, Shengliang Shi   +5 more
doaj   +1 more source

Agriculture: energy use and conservation [PDF]

, 2013
Effective energy use and conservation are becoming increasingly important in the context of rising energy costs and concerns over greenhouse gas (GHG) emissions.
Maraseni, Tek Narayan, Chen, Guangnan
core   +1 more source

Techno-economic assessment of Bilacenge PV grid system in Southwest Sumba

Journal of Mechatronics, Electrical Power, and Vehicular Technology
A solar photovoltaic (PV) grid system with an Energy Management System (EMS) has been installed in Bilacenge, Southwest Sumba. This 400 kWp PV-Grid system is the first system in Indonesia that can control the electricity output to the grid.
Eka Nurdiana, Muhammad Very Nugroho, Zakariya Arif Fikriyadi, Fajril Mardiansah, Dwie Vannia Dianti, Dannya Maharani Putri Utami, Kholid Akhmad, Yusuf Margowadi, Arya Rezavidi   +8 more
doaj   +1 more source