Research and simulation of magnetically controlled shunt MCRs using Matlab Simulink

Abstract

• The change in inductive resistance was carried out by DC bias. • The implementation of the half-wave saturation mode principle of the three-limb core. • The model is based on an electromagnetic converter block. • The resulting induction is greater than the saturation induction of steel for half the period. The paper presents the history of the creation of controlled reactors with DC bias, describes the principle of operation and the main types of designs of controlled reactors with DC bias. The basic principles of regulation, compensation of higher harmonics and the possibility of manufacturing controlled reactors based on standard transformers are shown. An adequate mathematical model of a three-limb-core magnetically controllable reactor (MCR) has been created in the Matlab Simulink software package. Different magnetic analyzes can be made by changing core structures and changing the winding connections. The adequacy of the model has been verified by experimental studies on physical models of the MCR. Сurrent harmonics were analyzed in the entire range of MCR control. The operability of an MCR made of a three-limb magnetic circuit has been proven. Moreover, mathematical model can solve the problem that the previous PSCAD model cannot accurately simulate iron core size optimization and provide guarantee for further research in the future.