Method and system for monitoring condition of electric drives

A system configured to be communicatively coupled to an electric drive in an industrial network to monitor a condition of the electric drive based on estimation of values of one or more temperatures associated with one or more components of the electric drive, the electric drive being configured to control operation of an electric motor, the system comprising:

• a processor configured to:
• receive (i) values of input parameters associated with an operation of the electric drive, (ii) values of state parameters associated with an output of the electric drive, and (iii) values of the one or more temperatures associated with the one or more components;
• update one or more coefficients associated with a state space model which represents a thermal behavior of the electric drive, wherein the state space model comprises a first layer and a second layer, wherein the one or more coefficients are updated based on the values received at the processor over a period of time;
• and—
• estimate values of the state parameters at a second time instant with the first layer of the state space model based on the values of the input parameters at a first time instant and the values of the state parameters received at the first time instant;
• estimate values of the one or more temperatures at a third time instant with the second layer of the state space model based on the values of the one or more temperatures received at the first time instant and the values of the state parameters estimated at the second time instant, wherein the third time instant is a predetermined number of hours after the first time instant and the second time instant;
• and
• determine, from among one or more conditions of the electric drive, a condition of the electric drive at a third time instant based on the values of the one or more temperatures estimated at the third time instant and one or more predetermined thresholds, wherein the one or more predetermined thresholds represent severity associated with the one or more conditions;
• a communication interface configured to provide the determined condition to a user interface associated with the system;
• and
• wherein the processor is further configured to:
• perform preventive maintenance actions on the electric drive, wherein the preventive maintenance actions comprises of reducing an input current to the electric drive or increasing a cooling time of the electric drive based on the determined condition based on the determined condition.