Numerical analysis of hysteresis loss in pulse transformer

This paper presents an analysis of electric vehicle charging station operation based on a dual active bridge topology. Two cases are considered: one with the use of a medium frequency planar transformer, the other with a conventional Litz winding transformer. An analysis was performed using both solutions in order to compare the performance characteristics of the system for both cases and to present the differences between each transformer solution. The analysis was based on tests carried out on the full-scale model of an electric vehicle charging station, which is the result of the project "Electric vehicle charging system integrated with lighting infrastructure" realized by the Department of Drives and Electrical Machines, Lublin University of Technology. The results presented in the paper show that the conventional transformer used in the research achieved better results than the planar transformer. Based on the results obtained, the validity of using both solutions in electric vehicle charging stations was considered.

Section: Introductionmentioning

confidence: 99%

Comparative study of DC/DC electric vehicle charging system with conventional transformer and planar transformer

2024

“…Physicists and materials science engineers are interested mainly in understanding the physical properties of the material and their relation to microstructure [9,12,38,46,[75][76][77]. The research scope for the designers of electrical machines covers macroscopic descriptions of phenomena occurring within a ferromagnetic core and the possibility to include them in circuit simulations or finite element/volume codes in order to optimise the structure and properties of developed devices [5,36,37,41,59,69,79]. Finally, power system engineers strive to develop simplified yet realistic hysteresis models useful for prediction of system behaviour during inrush, ferroresonance and in other transient states [15,16,33,39,62,67,78,80].…”

Section: Introductionmentioning

confidence: 99%

Higher order reversal curves in some hysteresis models

Chwastek¹

2012

Some physical concepts important for a hysteresis model (effective field, anhysteretic magnetization) are discussed on the example of Jiles-Atherton model. The Jiles-Atherton model reveals some drawbacks, which make this model more difficult to be applied in electrical engineering. In particular, it does not describe accurately the magnetization curves after a reversal, moreover complex magnetization cycles are poorly represented. On the other hand, the phenomenological description proposed by Takács seems to be a valuable alternative to the Jiles-Atherton formalism. The concept of effective field may be easily incorporated in the description.

“…The J-A model can be used in analysis of coupled electromagnetic and thermal phenomena in the transformers [13]. It was reported in [14] that the J-M model has been successfully utilized to simulate of coupled electromagnetic, fluid dynamic and motion phenomena.…”

Section: Macroscopic Models Of Magnetic Hysteresismentioning

confidence: 99%

Simulation of the remanence influence on the transient states in a single-phase multiwinding transformer

Wilk

Michna

2017

This paper presents the mathematical model of a single-phase multi-winding core type transformer taking into account magnetic hysteresis phenomenon based on the feedback Preisach model (FPM). The set of loop differential equations was developed for a K-th winding transformer model where the flux linkages of each winding includes flux Φ common to all windings as a function of magneto motive force Θ of all windings. The first purpose of this paper is to implement a hysteresis nonlinearity involved in the Φ(Θ) function which also accounts residual magnetic flux. The second purpose of this paper is experimental validation of the developed transformer model in a capacitor discharge test and several different values of residual magnetic flux.