| 论文简介 |
Canadian supercritical water-cooled reactor (SCWR) can be modelled as a Multiple-input Multiple-output
(MIMO) system. It has a high power-to-flow ratio, strong cross-coupling and high degree of nonlinearity
in its dynamic characteristics. Among the outputs, the steam temperature is strongly affected by the
reactor power and the most challenging to control. It is difficult to adopt a traditional control system
design methodology to obtain a control system with satisfactory performance. In this paper, feedforward
control is applied to reduce the effect on steam temperature from the reactor power. Single-input Singleoutput
(SISO) feedback controllers are synthesized in the frequency domain. Using the feedforward
controller, the steam temperature variation due to disturbances at the reactor power has been significantly
suppressed. The control system can effectively maintain the overall system stability and regulate
the plant around a specified operating condition. To deal with the nonlinearities, gain scheduling control
strategy is adopted. Different sets of controllers combined by smooth weight functions are used for the
plant at different load conditions. The proposed control strategies have been evaluated under various
operating scenarios. Simulation results show that satisfactory performance can successfully achieved
by the designed control system. |
(创新港)
