نتایج جستجو برای: high power sources
تعداد نتایج: 2642950 فیلتر نتایج به سال:
Homeland security and military defense technology considerations have stimulated intense interest in mobile, high power sources of millimeter-wave mmw to terahertz THz regime electromagnetic radiation, from 0.1 to 10 THz. While vacuum electronic sources are a natural choice for high power, the challenges have yet to be completely met for applications including noninvasive sensing of concealed w...
Nowadays, high-voltage circuit breakers have reached such high short-circuit capabilities that testing them under the full rated voltage is generally not possible with direct tests, and they are conducted by using the synthetic test methods. Although the phenomena associated with making tests is of particular importance especially in case of load break switches, but making tests are rather d...
Two-Stage Stochastic Day-Ahead Market Clearing in Gas and Power Networks Integrated with Wind Energy
The significant penetration rate of wind turbines in power systems made some challenges in the operation of the systems such as large-scale power fluctuations induced by wind farms. Gas-fired plants with fast starting ability and high ramping can better handle natural uncertainties of wind power compared to other traditional plants. Therefore, the integration of electrical and natural gas syste...
The increase in fossil fuel prices has resulted in growing utilization of renewable energy sources in power systems. Wind energy as an economical source of energy has experienced the fastest growth among other energy sources. Traditionally, renewable energy sources as a result of their random nature have not been considered in the process of generation expansion planning. The increase in fossil...
This paper presents modeling and control of a hybrid distributed energy sources including photovoltaic (PV), fuel cell (FC) and battery energy storage (BES) in a microgrid which provides both real and reactive power to support an unbalanced utility grid. The overall configuration of the microgrid including dynamic models for the PV, FC, BES and its power electronic interfacing are briefly descr...
We present recent test results and discuss design challenges on x-ray optical components for the wiggler sources at CHESS and for the proposed energy recovery linac (ERL) source at Cornell. For the existing wiggler sources, a new white-beam collimating mirror has been installed and tested at F-line and some preliminary test results are presented. For the proposed ERL, three types of x-ray optic...
It is beyond contention that the power of organised labour in Britain has witnessed a marked fall in the last thirty years. Attempts to rebuild that powerbase in a world of neo-liberal globalisation and the ascendancy of employer power means that it is time to go back to basics to try to understand the theoretical sources of labour union power. Using a simple three-fold schema developed by Eric...
This report is a discussion, evaluation and comparison of potential sources of electrical power for small mobile systems. Power sources are an inevitable challenge in the design of portable and small mobile systems, especially robotic systems. Power systems cannot be an afterthought and, if left to final design stages, can result in severe and adverse effects on the system, such as excess weigh...
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