A Novel Hybrid Sequential Start Control System for Large Inductive Loads

The inrush current of a large inductive load can be reduced with a soft starter; however,the large inrush current caused by simultaneous bulk starts (SBSs) cannot be effectively reduced. Inorder to reduce the high inrush current and voltage sag owing to the SBSs of large capacity inductiveloads within a power network, a novel hybrid sequential start control system is proposed, implementedon embedded systems, and evaluated with a testbed in this study. From the experimental andsimulation results of the proposed control system, the inrush current could be effectively restrictedbelow the maximum current capacity of a power distributing board. Moreover, with the proposedsystem, power cost typically dictated by the peak power consumption can be fairly reduced, and thequality of the power system connected to the inductive loads can be efficiently increased. KCI Citation Count: 0