Multi induction motor connected network residual voltage and it´s back power

Due to the current, widespread need for high-speed, high-capacity induction motors, the residual voltage resulting from interrupted power supply conditions must be critically evaluated. Both the electromagnetic shock at its coil end (due to the excessive surge current when the power line is switched over) and the mechanical system impact (due to the greater transient torque) must be specifically investigated. In this paper, the bus residual voltage problem is set as the study target, focusing on induction motors which are connected to a common bus. The analytical method used in this problem and the rapid decay of the residual voltage are clearly demonstrated below, along with comparative investigation and test results. It was proved that the residual voltage and back power of the electric power network (containing many rotating electrical machinery in this case (IM, SM), the capacitor for a back power improvement, etc.) are also subject to quantitative analysis. Although it was thought that these residual voltage and back power conditions were disadvantageous in a system change over, we now understand they are a momentary interruption phenomena of IT power supply equipment. Through a huge mechanical shock, they damage the coil end or shaft torque. Still, these phenomena make the need for high-speed, high-capacity induction motors even more clear.