Implementation of Energy based Hysteresis Model in LTspice for power electronics applications Fabien Sixdenier, Riccardo Scorretti, Vittorio Bertolini, Antonio Faba-Universite Claude Bernard Lyon INSA Lyon, Ecole Centrale de Lyon, France † University of Perugia, Italy

 Implementation of Energy based Hysteresis Model in LTspice for power 1 electronics applications Fabien Sixdenier∗, Riccardo Scorretti∗†, Vittorio Bertolini†, Antonio Faba† 

Abstract—Circuit simulation software is routinely used in power electronics to analyze systems with magnetic cores exhibiting significant hysteresis behavior. This paper presents the implementation of the Energy-Based Hysteresis Model (EBHM) in LTspice to account for hysteresis in magnetic cores of inductors. The model is validated via transient simulations of a DC/DC buck converter, comparing results with experimental measurements across various input voltages, frequencies, and duty cycles. While the model accurately predicts average current, discrepancies in current ripple are observed, attributed to core-to-core variability in ferrite materials. The EBHM implementation offers a significant computational advantage, with simulation times remaining under 10 seconds even for highly saturated cases. The model’s robustness and potential for extension to dynamic effects (e.g., eddy currents) are discussed, along with its applicability to other power electronics topologies.

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Study of a High-Power Medium Frequency Transformer Using Amorphous Magnetic Material by Shichong Zhang,Dezhi Chen * and Baodong Bai- School of Electrical Engineering, Shenyang University of Technology, Shenyang 110027, China

 

Study of a High-Power Medium Frequency Transformer Using Amorphous Magnetic Material by Shichong ZhangORCID,Dezhi Chen * andBaodong Bai School of Electrical Engineering, Shenyang University of Technology, Shenyang 110027, China

Abstract A shell-type medium frequency transformer (MFT) using amorphous alloy material is designed for high-power electronic applications. The optimal area product design method is adopted to design an MFT, which maximizes the high efficiency and power density, minimizes the loss and volume, and meets the limitations of insulation and temperature rise. Then, a 20 kVA/10 kHz MFT is designed. To ensure the rationality of the MFT design, the magnetic properties of the amorphous alloy material are measured, and finite element simulations are carried out based on measured magnetic properties. The magnetic flux density, loss, and temperature rise of the designed MFT are analyzed. Finally, a 20 kVA/10 kHz MFT prototype is fabricated, and experimental tests are carried out. The loss and temperature rise of the MFT prototype are within reason, which verifies the effectiveness of the proposed scheme. 

READ FULL ARTICLE:https://www.mdpi.com/2073-8994/14/10/2129