Design and Experimental Validation of a Ducted Counter-rotating Axial-flow Fans System [PDF]
, 2012 An experimental study on the design of counter-rotating axial-flow fans was carried out. The fans were designed using an inverse method. In particular, the system is designed to have a pure axial discharge flow.
NOURI, Hussain +9 more
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Xenon Oscillation Control in Large PWRs Using a Characteristic Ellipse Trajectory Drawn by Three Axial Offsets [PDF]
Journal of Nuclear Science and Technology, 2008 We have proposed a very simple xenon oscillation control procedure for axial xenon oscillation control based on a characteristic trajectory. The trajectory is drawn by three offsets of power distributions, namely, AOp, AOi, and AOx, which are defined as the axial offset (AO) of power distribution, AO of power distribution under which the current iodine
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Analysis of axial offset units with WWER-1000 in the mode of maneuvering
Trudy Odesskogo Politehničeskogo Universiteta, 2014 The article examines the impact of xenon transient processes in power programs for regulating WWER-1000 reactor on its stability and reliability. Xenon transient processes in the power maneuvering mode of NPP affect the reactivity change in the active ...
Т.В. Фощ
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Identification and Optimal Control for Surge and Swab Pressure Reduction While Performing Offshore Drilling Operations [PDF]
Modeling, Identification and Control, 2020 In this paper, an unscented Kalman filter coupled with a nonlinear model-predictive controller for a hydraulic wellbore model with multi-variable control and tracking is presented. In a wellbore, high drill string velocities in operational sequences such
Njål Tengesdal, Christian Holden
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Eastern-European Journal of Enterprise Technologies, 2014 The paper deals with analyzing the influence of the methods for controlling power unit with the VVER-1000 power unit in a maneuverable mode on a quantitative measure of stability, namely on the size of axial offset. Automated systems for controlling power units with the VVER-1000 reactor in maneuvering with such control programs as: with a constant ...
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Optimal Control Timing Search of Xenon Oscillations in Large PWRs Using a Characteristic Ellipse Trajectory Based on Three Axial Offsets [PDF]
Journal of Nuclear Science and Technology, 2009 We have proposed a simplified control procedure for axial xenon oscillations in large PWRs based on a characteristic ellipse trajectory method. However, this procedure cannot guarantee that the desired control rod position can be achieved when the xenon oscillation is terminated.
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IMPROVED MODELS AND METHOD OF POWER CHANGE OF NPP UNIT WITH VVER-1000
Автоматизация технологических и бизнес-процессов, 2017 This study represents the improved mathematical and imitational allocated in space multi-zone model of VVER-1000 which differs from the known one. It allows to take into account the energy release of 235U nuclei fission as well as 239Pu .
T. Foshch, S. Pelykh
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Offset free data driven control: application to a process control trainer [PDF]
, 2019 This work presents a data driven control strategy able to track a set point without steady-state error. The control sequence is computed as an affine combination of past control signals, which belong to a set of trajectories stored in a process historian
Salvador, José R. +3 more
core +1 more source
Research on Mechanical Shim Application with Compensated Prompt γ Current of Vanadium Detectors
Nuclear Engineering and Technology, 2017 Mechanical shim is an advanced technology for reactor power and axial offset control with control rod assemblies. To address the adverse accuracy impact on the ex-core power range neutron flux measurements-based axial offset control resulting from the ...
Zhi Xu
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Control rod strategy for long-term small rod-controlled pressurized water reactors
He jishuBackgroundSmall rod-controlled pressurized water reactors have foregone the use of soluble boron and heavily rely on control rods and burnable poison rods for reactor control.PurposeThis study aims to explore the influence of control rods on the key ...
WU Zhiqiang +6 more
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