PROJECT TITLE :
Investigation of Spatial Control Strategies for AHWR: A Comparative Study
Massive nuclear reactors such as the Advanced Serious Water Reactor (AHWR), are susceptible to xenon-induced spatial oscillations in that, though the core average power remains constant, the power distribution might be nonuniform further because it would possibly expertise unstable oscillations. Such oscillations influence the operation and control philosophy and could additionally drive questions of safety. Therefore, large nuclear reactors are equipped with spatial controllers which maintain the core power distribution close to desired distribution throughout all the facets of operation and following disturbances. During this paper, the case of AHWR has been thought of, for which a variety of various varieties of spatial controllers have been designed throughout the last decade. Some of these designs are based mostly on output feedback whereas the others are based on state feedback. Also, each the conventional and fashionable management ideas, like linear quadratic regulator theory, sliding mode management, multirate output feedback control and fuzzy management are investigated. The styles of those totally different controllers for the AHWR are disbursed using a 90th order model, that is extremely stiff. Hence, direct application of style ways suffers with numerical ill-conditioning. Singular perturbation and time-scale ways are applied whereby the design downside for the original higher order system is decoupled into two or 3 subproblems, each of which is solved separately. Nonlinear simulations have been dole out to obtain the transient responses of the system with different sorts of controllers and their performances have been compared.
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