1.郑州大学电气工程学院;2.School of Electrical Engineering,Zhengzhou University
National Natural Science Foundation of China（ 52107170）
The traditional on-load voltage regulation technology has deficiencies such as slow answer speed and low regulation accuracy, which affect the reliability of transformer operation. Although the new power electronic transformer has the advantages of no arc and fast response, but it has high loss and high cost. Changes can cause voltage fluctuations, which can adversely affect the power system. A new magnetron transformer structure is proposed in this paper, which consists of a magnetron reactor and a transformer connected in series. According to the topological structure of the magnetron reactor, the working principle of the magnetron transformer is analyzed, and the circuit equation and the electromagnetic equation are deduced. The right side yoke of the structure provides an AC flux loop that is not interfered by the DC flux. Maxwell and Simplorer in Ansys software are used to conduct multi-physical domain co-simulation to analyze the voltage regulation ability of the model field path coupling, and the harmonic analysis of the output voltage is carried out in Simulink. It is verified that the new magnetic transformer can adjust the output voltage smoothly without arc and without step, and the harmonic content is low.