Method and controller for controlling a vapour-compression system with thermodynamic constraints satisfaction

The patent transforms the control approach by changing from direct component control to thermodynamic parameter control. The controller monitors and regulates thermodynamic parameters (temperature, pressure, enthalpy, entropy) throughout the system to achieve precise control despite non-linear component behavior. This parameter-based approach allows the system to maintain optimal performance across varying operating conditions without requiring complex individual component control strategies.

The patent introduces thermodynamic parameters as intermediary variables between the control system and the physical components. Instead of directly controlling compressors and expansion valves, the system uses thermodynamic state parameters as mediators to indirectly regulate system behavior. This intermediary layer simplifies control by focusing on the thermodynamic state rather than the complex mechanical behavior of individual components.

The patent creates a universal control framework that can handle various operating conditions and component variations through a single thermodynamic parameter-based approach. The same control methodology applies regardless of specific compressor or valve characteristics, making the system adaptable and reliable across different configurations and operating scenarios without requiring multiple specialized control strategies.

The patent implements comprehensive feedback control by continuously monitoring thermodynamic parameters throughout the system and adjusting control actions based on deviations from desired states. The controller uses feedback from temperature, pressure, and other thermodynamic measurements to maintain optimal system performance, automatically compensating for non-linear behaviors and external disturbances.