H_∞ control theory applied to xenon control for load-following operation of a nuclear reactor

摘要

A robust controller is designed by applying the H-∞ optimal control theory to the xenon control for load- following operation of a nuclear reactor. The set of re- actor model equations for controller design is a stiff system. This singularly perturbed system arises from the interaction of slow dynamics modes (iodine and xenon concentrations ) and fast dynamics models (neutron den- sity, fuel and coolant temperatures). The singular per- turbation technique is use d to overcome this stiffness problem. The design specifications are incorporated by the frequency weights using the mixed-sensitivity prob- lem approach.