Multi-model GPC for steam temperature system of circulating fluidized bed boiler

In the view of the large time-delay and fast time-varying characteristics of steam temperature system of circulating fluidized bed boiler (CFBB), steam temperature properties effected by spray-water and feed-water are studied in different steam load. Multi-model forward-feedback adaptive generalized predictive control (GPC) is proposed. The new method has ability of overcoming some shortcomings while single model used, and eliminate the coupling property from feed-water varying. Simulation results show that the new method has better control quality, stronger robustness and adaptive capacity.