Multivariable optimization of operation of vapor compression systems

摘要

A method for operating a vapor compression system modifies each control signal of a set of control signals with a corresponding modification signal of a set of modification signals, wherein each modification signal includes a perturbation signal, and the pertubation signals haver different frequencies and determines a metric signal representing perturbations in the system caused by the set of modification signals. Next, the method adjusts a value of each modification signal based on a function of a phase between the modification signal and a corresponding frequency component of the metric signal.

主权项

1. A method for operating a vapor compression system, comprising the steps of:
generating a set of perturbation signals having different frequencies for a set of actuators; modifying each control signal of a set of control signals with a corresponding modification signal of a set of modification signals, wherein each modification signal includes a perturbation signal; determining a metric signal representing perturbations in the system caused by the set of modification signals, where said metric signal is determined using a high pass filter responsive to receiving an output signal representing an energy consumption of the vapor compression system; subjecting a product of the perturbation signal and a corresponding frequency component of the metric signal to a low pass filter to produce a constant term of the product, wherein a sign of the constant term corresponds to a function of a phase; determining a modification value based on the constant term, wherein the constant term is integrated to produce an updated modification value; and adjusting a value of each modification signal based on a function of a phase between the modification signal and a corresponding frequency component of the vapor compression system, wherein the steps of the method are performed by a processor.