Modeling for a Multitap Interphase Reactor in a Multipulse Diode Bridge Rectifier

This paper presents a new mathematical model for tapped interphase reactor (IPR) in a six-phase diode bridge rectifier. On the basis of coupling circuit principle and phase coordinate method, the proposed model, which reduces the mutual inductance coupling completely, describes the IPR by an admittance matrix containing the information about the connection way and electrical quantities. To double-tap IPR as an example, and using the proposed method, the full-decoupling model is set up. Compared with the model built by Kirchhoff's law, the proposed model is easier to realize in simulation software. The proposed method can well be extended to the multitap IPR. Some theoretical analysis, computer simulation, and experiments are included to verify the correctness of the model.