Implementation of an Automatic Induction Motor Starter with Delay Using Microcontroller
It is well understood that induction motors draw higher currents during their starting operations than is the case under full load running conditions. Since, the early days of induction motor availability, starting methods other than direct online have been used, and in some cases mandated by utilities, to reduce the effect of these high starting currents on the electrical distribution network. What is generally not recognized is the existence of short duration inrush currents, which greatly exceed these starting currents.