Transient Analysis of Fault-Induced Delayed Voltage Recovery by Mathematical Modeling of a Three-Phase Induction Motor

This paper presents a detailed mathematical procedure for implementing a three-phase induction motor model. Induction motors are crucial components in electric power systems. Therefore, several investigations have been conducted on the three-phase motor model. However, the mathematical representations for model development are complex due to nonlinearity and complicated structure. In this case, a composite load model is used to provide a block diagram based on the fifth-order analytical method in polar coordinates to calculate the transient and subtransient responses of a three-phase motor. Specifically, the behavior of a three-phase deep-slot squirrel cage motor is represented using parameters to describe its response from start-up to the voltage sag. Simulation was used to calculate the responses of the electromechanical variables after disturbances, in order to better understand the dynamic behavior of motor loads in voltage stability in electrical systems. The results were compared with those in the literature to verify the performance of the model.