Linear Active Disturbance Rejection Control of Solar Heating System Assisted by Ground-source Heat Pumps

摘要

In this paper,a linear active disturbance rejection controller is proposed for a solar heating system assisted by ground-source heat pump,whose model is obtained by applying the system identification technique.The disturbances imposed on the heating system are estimated through an extended linear state observer and then compensated by a linear feedback control strategy.The proposed control strategy is applied to a 300 kW heating system to handle the thermal load variations of grid and process disturbances.The effectiveness of this controller is verified via a simulation study,and the results demonstrate that the proposed strategy can provide satisfactory tracking performance and disturbance rejection.