INDUCTIVE CONVERTERS FOR MEASURING HIGH ALTERNATING CURRENTS

Abstract

This article analyzes the significance of current transformers (CTs) and power transformers (PTs) in the electrical power system, their operating principles, and the key differences between them. The focus is placed on the operational modes, structural features, and functional purposes of CTs and PTs. The issue of accurately measuring high currents and the various current measuring converters (CMCs) used for this purpose including both contact and non-contact types, such as magnetomodulation converters, current comparators, and transformer-based converters are described. The advantages and disadvantages of each converter type are discussed, along with the requirements that should be considered when selecting them. In conclusion, it highlights the importance of current transformers as electromagnetic measuring elements in traction power supply systems and advocates for the use of wide-range CTs to ensure operational flexibility and universality.