Full Power Operation of an Ultra-Compact, Low Voltage Reltron Microwave Source

2002 ◽  
Author(s):  
Song Hun Choi
Keyword(s):  
Low Voltage ◽  
Microwave Source ◽  
Full Power ◽  
Power Operation

scholarly journals FULL POWER OPERATION OF THE LAMPF 805 MHz SYSTEM.

1970 ◽  
Author(s):  
R Jameson ◽  
J Wallace ◽  
R Cady ◽  
D Liska ◽  
J Sharp ◽  
...  
Keyword(s):  
Full Power ◽  
Power Operation

Radiation shielding requirements for the full power operation of the linear IFMIF prototype accelerator (LIPAc) at Rokkasho

2019 ◽  
Vol 146 ◽  
pp. 293-298 ◽  
Author(s):  
Keitaro Kondo ◽  
Beatriz Brañas ◽  
Philippe Cara ◽  
Hervé Dzitko ◽  
Dominique Gex ◽  
...  
Keyword(s):  
Radiation Shielding ◽  
Full Power ◽  
Power Operation

The Study and Design of 20kW Photovoltaic Power System

2013 ◽  
Vol 860-863 ◽  
pp. 151-155
Author(s):  
Yun Bo Zhang ◽  
Wen Zheng ◽  
Hong Zhang
Keyword(s):  
Power System ◽  
Design Strategy ◽  
Photovoltaic Modules ◽  
Photovoltaic Power ◽  
Full Power ◽  
Power Operation ◽  
Grid Connected Inverter ◽  
Parameters Calculation

This paper firstly analysis the principle of three-phased photovoltaic grid-connected power system. Secondly, the 20KW photovoltaic power system will be given as an example to introduce the design strategy of photovoltaic modules. Also, the photovoltaic grid-connected inverter is designed, which includes its parameters calculation and components selection. Finally, the whole photovoltaic power system is designed and verified via the experiment. The result of the experiment shows the design is reasonable and reliable. The power system can achieve full power operation and satisfy its expected goal.

scholarly journals The Local Seismoacoustic Wavefield of a Research Nuclear Reactor and Its Response to Reactor Power Level

2020 ◽  
Vol 92 (1) ◽  
pp. 378-387
Author(s):  
Omar E. Marcillo ◽  
Monica Maceira ◽  
Chengping Chai ◽  
Christine Gammans ◽  
Riley Hunley ◽  
...  
Keyword(s):  
Energy Transport ◽  
Nuclear Reactor ◽  
Power Level ◽  
National Laboratory ◽  
Reactor Power ◽  
Operational Conditions ◽  
Oak Ridge ◽  
Research Nuclear Reactor ◽  
Full Power ◽  
Power Operation

Abstract We describe the seismoacoustic wavefield recorded outdoors but inside the facility fence of the High Flux Isotope Reactor (HFIR) at Oak Ridge National Laboratory (Tennessee). HFIR is a research nuclear reactor that generates neutrons for scattering, irradiation research, and isotope production. This reactor operates at a nominal power of 85 MW, with a full-power period between 24 and 26 days. This study uses data from a single seismoacoustic station that operated for 60 days and sampled a full operating reactor cycle, that is, full-power operation and end-of-cycle outage. The analysis presented here is based on identifying signals that characterize the steady, that is, full-power operation and end-of-cycle outage, and transitional, that is, start-up and shutdown, states of the reactor. We found that the overall seismoacoustic energy closely follows the main power cycle of the reactor and identified spectral regions excited by specific reactor operational conditions. In particular, we identified a tonal noise sequence with a fundamental frequency around 21.4 Hz and multiple harmonics that emerge as the reactor reaches 90% of nominal power in both seismic and acoustic channels. We also utilized temperature measurements from the monitoring system of the reactor to suggest links between the operation of reactor’s subsystems and seismoacoustic signals. We demonstrate that seismoacoustic monitoring of an industrial facility can identify and track some industrial processes and detect events related to operations that involve energy transport.

scholarly journals Electromechanical Transient Modeling and LVRT Parameter Identification of Large Capacity Full Power Converter Wind Turbines Based on PSASP Program

2021 ◽  
Vol 2108 (1) ◽  
pp. 012002
Author(s):  
Guoqiang Lu ◽  
Xiangyu Tao ◽  
Chunmeng Chen ◽  
Jiatian Gan ◽  
Xufeng Zhao
Keyword(s):  
Parameter Identification ◽  
Wind Turbine ◽  
Low Voltage ◽  
Recovery Period ◽  
Power Converter ◽  
Control Mode ◽  
Model Parameters ◽  
Model Structure ◽  
Identification Method ◽  
Full Power

Abstract Full power converter wind turbine is the main type of wind power, so the simulation calculation needs to establish accurate model parameters. This paper analyzes the model structure of PSASP program according to its low voltage ride through control and physical characteristics, and puts forward the parameter identification method of LVRT characteristics of full power converter wind turbine, and to use the LVRT data of 5. 5MW unit for parameter identification and simulation verification. This paper proposes that the electromechanical transient simulation can ignore the part of the generator model of the full power converter wind turbine, and simulates the grid side converter with the controlled current source. The main characteristics of LVRT are determined by the control system of the converter. In order to do the parameter identification, it is necessary to calculate and analyze the control characteristics of multiple measured data. First, determine the control mode, then determine the control parameters to complete the parameter identification. In this paper, the modeling conditions and model structure of the full power converter wind turbine are confirmed. The correlation between the parameters during the LVRT fault and the parameters during the LVRT recovery period and the LVRT characteristics is analyzed. In this paper, a parameter identification method is proposed to analyze the active current and reactive current during the LVRT fault, which has strong physical significance and operability. Based on the actual LVRT characteristics of 5. 5MW wind turbine, the parameter identification and simulation are carried out to verify the correctness of the method.

Chemical Neutralization to Control Denting in Nuclear Steam Generators

1983 ◽  
Vol 105 (4) ◽  
pp. 763-770 ◽  
Author(s):  
T. A. Beineke ◽  
J. F. Hall ◽  
K. E. Marugg ◽  
D. B. Scott ◽  
R. M. Orsulak ◽  
...  
Keyword(s):  
Boric Acid ◽  
Calcium Hydroxide ◽  
Calcium Concentration ◽  
Chloride Concentration ◽  
Line Treatment ◽  
Steam Generators ◽  
Adverse Side Effects ◽  
On Line ◽  
Full Power ◽  
Power Operation

Laboratory testing at Combustion Engineering has indicated promise in controlling simulated steam generator tube denting through chemical neutralization. Testing was limited to on-line treatment, and two neutralizers have been evaluated: (i) calcium hydroxide, and (ii) boric acid. On-line treatment with calcium hydroxide successfully halted active denting whenever the bulk calcium concentration (in ppm) equaled or exceeded the bulk chloride concentration (in ppm). Calcium hydroxide also was effective as an alternative to ammonia as a pH controlling agent in two tests conducted without ingress of chloride. On-line treatment with boric acid consisted of a four-day soak at simulated low (approximately 30 percent) power with 50 ppm B followed by one month full-power operation with 10 ppm B. This treatment also halted denting. Nondestructive and destructive examination of test boilers gave no indication of adverse side effects associated with either neutralizer.

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