Patent ID: 11953865
Assignee: JOHNSON CONTROLS TYCO IP HOLDINGS LLP
Field: Control (Instruments)
Classification: CPC G  F | IPC F  G

Claim 9:
10. A method for operating heating, ventilation, or air conditioning (HVAC) equipment, the method comprising:
performing a first optimization to generate a first set of control decisions at a plurality of time steps for HVAC equipment comprising waterside HVAC equipment that consume one or more resources from utility providers to generate a heated or chilled fluid and airside HVAC equipment that receive the heated or chilled fluid from the waterside HVAC equipment and use the heated or chilled fluid to heat or cool a supply of airflow for a building;
performing a second optimization subject to a constraint to generate a second set of control decisions for the HVAC equipment, wherein:
the constraint is based on a result of the first optimization and comprises at least one of (i) a fixed value for a variable in the second optimization, (ii) an upper or lower bound for the second optimization, or (iii) a predicted state at one or more of the plurality of time steps;
the constraint comprises a predicted airside demand resulting from the first optimization;
the second optimization comprises a primal waterside optimization performed subject to a second constraint on the predicted airside demand; and
the second set of control decisions are for the waterside HVAC equipment and override a portion of the first set of control decisions that apply to the waterside HVAC equipment;

combining the first set of control decisions and the second set of control decisions to generate a combined set of control decisions for the HVAC equipment; and
operating the HVAC equipment in accordance with the combined set of control decisions.