Patent ID: 11888420
Assignee: ABB SCHWEIZ AG
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC F  H  G | IPC H

Claim 18:
19. A method comprising:
inputting, by a variable frequency drive, a set of data to one or more control loop performance monitoring algorithms comprised in the variable frequency drive, wherein the set of data comprises at least a measured value of a process variable associated with a physical process influenced by the variable frequency drive via a motor and an actuator, a target value for the process variable, a set of controller input parameters of a process controller controlling the variable frequency drive, and a controller output of the process controller;
obtaining, by the variable frequency drive, an output from each of the one or more control loop performance monitoring algorithms based at least partly on the set of data, wherein the output indicates at least one of a fraction of a manual operation time in relation to a total operation time of the variable frequency drive, a number of times of the controller output reaching a pre-defined minimum limit and/or a pre-defined maximum limit, a number of oscillations associated with the controller output, or a measured convergence time that it takes for the process variable to converge to the target value;
determining, by the variable frequency drive, one or more key performance indicator values based at least partly on the output from each of the one or more control loop performance monitoring algorithms, wherein the one or more key performance indicator values indicate a problem or quality associated with control loop performance; and
adjusting, by the variable frequency drive, the set of controller input parameters based at least partly on the one or more key performance indicator values.