شبيه سازي روشي براي كنترل حد مجاز جريان خروجي سيستم تزريق جريان بالا مبتني بر شار مغناطيسي نامتعادل

A New Approach for Maximum Allowable Output Current Control in a High Current Injection Transformer Based on Unbalanced Magnetic Flux

Current Injection transformer (CIT) systems are within the major group of the standard high current type test equipments in electrical industry, therefore their performances are very important. However, as the output of the CIT is wholly dependent on the impedance of the equipment under test, then current flow beyond the allowable limit can ever occur. When designing high current devices, there are many required factors to be considered from which, the overcurrent protection of these devices must be ensured. This paper explains in details the overcurrent protection of the CIT while the test is being carried out using a novel method of output current control by superconductivity concept. The output of the CIT is connected to the Equipment Under Test (EUT) via a set of another core and windings from which secondary winding is connected to the HTS current control circuit. The fast response (detection) of overcurrent of the system is achievable by means of an unbalanced magnetic flux at different voltage