Coordinative Control of Combined Heat and Power Integrated Energy System Using Dynamic Matrix Control

The combined heat and power integrated energy system(CHP-IES) is considered to be an important development direction of the future energy system because it can supply energy with high proportion of renewables to the end-users in an efficient and independent manner. However, the operation of the CHP-IES is challenging due to the characteristics of strong multi-variable coupling and dynamic differences between thermal and electrical processes. Moreover, there are strong uncertain fluctuations in both the renewable sources and load demands. It is therefore important to develop advanced controllers to achieve the reliable and flexible operation of the CHP-IES. For this reason, this paper presents a multi-variable dynamic matrix controller (DMC) of the CHP-IES based on the dynamics of the system. Simulation results on an off-grid CHP-IES show that the DMC can track the heat and power demands with smaller overshoot and faster speed, thus can reduce the dependence of the system on batteries, compared with the conventional PID controller.