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Multi-objective Economic Predictive Controller for Optimal Dynamic Energy Efficiency in MGT-CCHP

To improve the dynamic energy efficiency of a micro gas turbine combined cooling, heating and power (MGT-CCHP) unit in the process of adjustments under the changes of cooling, heating and electrical load, a multi-objective economic predictive control (MO-EMPC) method is proposed and applied for MGT-CCHP in this paper. Firstly, multiple optimization objectives of the new MGT-CCHP controller are constructed based on maximum exergy efficiency and load demands. Then, the MO-EMPC problem is constructed and solved by transformed into a utopia-tracking problem. Finally, the performance of the new MGT-CCHP controller was examined by simulations, which indicates that the dynamic energy efficiency of the MGT-CCHP unit is improved while all load demands are met.