High-Intensity Neutron Fields for Calibrating the Detectors of a Standard Control System of High-Power Nuclear Reactors

2003 ◽  
Vol 46 (6) ◽  
pp. 739-747
Author(s):  
V. D. Sevast'yanov ◽  
A. E. Volkov ◽  
N. V. Petrunin ◽  
V. F. Shikalov ◽  
M. G. Mittelman ◽  
...  
Keyword(s):  
Control System ◽  
High Power ◽  
High Intensity ◽  
Nuclear Reactors

scholarly journals Generation of High-Power High-Intensity Short X-Ray Free-Electron-Laser Pulses

2018 ◽  
Vol 120 (1) ◽  
Author(s):  
Marc W. Guetg ◽  
Alberto A. Lutman ◽  
Yuantao Ding ◽  
Timothy J. Maxwell ◽  
Franz-Josef Decker ◽  
...  
Keyword(s):  
High Power ◽  
Free Electron ◽  
High Intensity ◽  
Free Electron Laser ◽  
Laser Pulses ◽  
X Ray

Состояние разработок двухфазных систем терморегулирования космических аппаратов

2021 ◽  
pp. 36-51
Author(s):  
Рустем Юсуфович Турна ◽  
Артем Михайлович Годунов
Keyword(s):  
Heat Transfer ◽  
Control System ◽  
Power Consumption ◽  
High Power ◽  
Single Phase ◽  
Thermal Control ◽  
Two Phase ◽  
Thermal Control System ◽  
Intensification Of Heat Exchange ◽  
Large Heat

The progress of space technology is leading to more and more energy-equipped spacecraft. The International Space Station already has the capacity of solar panels of more than 100 kW. Autonomous spacecrafts and satellites (including stationary ones) have the capacity of power units of kW, in the nearest future - more than 10 kW. Forced heat transfer using single-phase liquid coolants is still considered as the main method of thermal control on high-power spacecraft (SC). Single-phase mechanically pumped fluid loop is a fully proven means of thermal control of spacecraft with a moderate heat load. A significant disadvantage of such systems is that the coolant temperature varies significantly within the loop. The temperature difference can be reduced by increasing the coolant flow rate, but for this, it is necessary to increase the pump capacity, which inevitably leads to an increase in power consumption, pipeline diameters, and weight of the system as a whole. In the case of spacecraft with high power capacity (more than 5-10 kW) and large heat transfer distances (10 m and more), a two-phase mechanically pumped fluid loop for thermal control is more preferable in terms of weight, the accuracy of thermoregulation, power consumption (and other parameters). The use of a two-phase loop (2PMPL) as a spacecraft thermal control system allows to reduce significantly mass and power consumption for own needs in comparison with a single-phase thermal control system (TCS). The effect is achieved due to the accumulation of transferred heat in the form of latent heat of vaporization and intensification of heat exchange at boiling and condensation of coolant. The article provides a critical review of published works on 2PMPL for spacecraft with high power (more than 5...10 kW) and a large heat transfer distance (more than 10...100 meters) from 1980 up to nowadays. As a result, a list of the main problems on the way of practical implementation of two-phase loops is formed.

Design of driving power and temperature control system for high power semiconductor laser

2018 ◽  
Vol 47 (10) ◽  
pp. 1005003
Author(s):  
张 龙 Zhang Long ◽  
陈建生 Chen Jiansheng ◽  
高 静 Gao Jing ◽  
檀慧明 Tan Huiming ◽  
武晓东 Wu Xiaodong
Keyword(s):  
Control System ◽  
Semiconductor Laser ◽  
Temperature Control ◽  
High Power ◽  
Temperature Control System ◽  
Power Semiconductor

scholarly journals Energy balancing in modular multilevel converter systems

2017 ◽  
Vol 65 (5) ◽  
pp. 685-694
Author(s):  
P. Blaszczyk ◽  
K. Koska ◽  
P. Klimczak
Keyword(s):  
Control System ◽  
High Voltage ◽  
High Power ◽  
Power Converter ◽  
Modular Multilevel Converter ◽  
Energy Balancing ◽  
Multilevel Converter ◽  
Test Setup ◽  
Clear View ◽  
Hierarchical Levels

Abstract The modular multilevel converter (MMC) is a well-known solution for medium and high voltage high power converter systems. This paper deals with energy balancing of MMCs. The analysis includes multi-converter systems. In order to provide clear view, the MMC control system is divided into hierarchical levels. Details of control and balancing methods are discussed for each level separately. Finally, experimental results, based on multi-converter test setup, are presented.

A full-digital multidimensional redundancy control system for high intensity D-T fusion neutron generator

2018 ◽  
Vol 106 ◽  
pp. 367-371
Author(s):  
Yong Zhang ◽  
Yongfeng Wang ◽  
Zhigang Wang ◽  
Chao Liu ◽  
Jianye Wang
Keyword(s):  
Control System ◽  
High Intensity ◽  
Neutron Generator ◽  
Fusion Neutron ◽  
Redundancy Control
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