| Title |
A Study on the New Method for Parameter Extraction and Electric Modeling of a Practical Transformer |
| Authors |
Jun-Woo Park ; Jae-Jung Yun |
| DOI |
http://dx.doi.org/10.5207/JIEIE.2017.31.5.045 |
| Keywords |
Practical Transformer ; Equivalent Circuit ; Simulation ; Mutual Inductance ; Leakage Inductance |
| Abstract |
The electric operation of a practical transformer, which is used in the various electric apparatus, is not easy to interpret, because it has some considerable parameters compared to a ideal transformer. In addition, although the commercial simulation tools provide electric models of a practical transformer for users, it is difficult to analyze intuitively the effects of the circuit performance caused by parameters of practical transformer such as a leakage inductance and mutual inductance. To solve these problems, this paper presents a method for parameter extractions and circuit modeling of a practical transformer. The equivalent model of a practical transformer by the suggested method consists of an ideal transformer model, two resistors, two leakage inductors, and a mutual inductor. The parameters for a practical transformer is extracted by open and short circuit analysis methods, and the electric model of an ideal transformer is made by solving the requirements. To verify the effectiveness of the equivalent model of a practical transformer, a test bed with two winding transformer is built. The Pspice model of a practical transformer was made of parameters extracted by a test bed, and a comparison between simulation and experiment results was given in this paper. As a result, the difference in the primary current and secondary current between simulated and experimental results is 1.2% and 1%, respectively. |