Current-limiting reactors are widely used in industrial electrical grids to reduce the current amplitude equipment and stabilize voltage on busbar during short circuits. Their application is distinguished by high technical economic efficiency. However, mechanical damage has been observed within extensive with many induction motors internal synchronous generators. The article analyses a case stu...

A step-up bridgeless single phase ac-dc power factor correction (PFC) rectifier based on sepic topology is proposed for high voltage battery charger application. The proposed topology consists of common input stage and parallel output stages. It utilizes one control signal over the whole line cycle. In addition, the proposed converter exhibits low inrush current and low magnetic emissions as cl...

High Torque Low Current (HTLC) Starter is the new innovative motor soft starter system. This is a motor starting method for high inertia loads using a low voltage drive with input and output transformers to control motor torque and limit current when starting a medium/high voltage motor. The HTLC is a solution to motor starting problems where Direct on Line (DOL) or “Across the Line” starting i...

Energization of a transformer results in sudden flow of current which is an effect of core magnetization. This current will be dominated by the presence of second harmonic, which in turn is used to segregate fault and inrush current, thus guaranteeing proper operation of the relay. This additional security in the relay sometimes obstructs or delays differential protection in a specific scenario...

This paper addresses the black start of medium voltage distribution networks (MV-DNs) by a battery energy storage system (BESS). The BESS consists two-level source inverter interfacing MV-DN which has limited overcurrent capability. On other hand, normally includes several step-up and step-down transformers that are drawing sympathetic inrush current in energizing stage. Therefore, major diffic...