Model Computation with Second-Order Radiative Transfer Equation for Snow Medium Using Coupled Finite Element Method and Method of Moment and Relaxed Hierarchical Equivalent Source Algorithm

Kumaresan, Hamsalekha A; Ewe, Hong Tat; Vetharatnam, Gobi; Jiang, Lijun

doi:10.1109/igarss47720.2021.9553396

Cited by 2 publications

(2 citation statements)

References 15 publications

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“…The finite element method (FEM) usually establishes the 3D model of each component in finite element analysis software (Chen et al, 2018;Wu et al, 2023), utilizing the finite element calculation of the software application to determine the description matrix of the device parameters and combining with the physical model to determine the high-frequency equivalent model. This method is complex, timeconsuming, and highly dependent on software and computer performance (Kumaresan et al, 2021). The feature modeling method (FM), which is generally used in the modeling of active components such as power switches (Hillenbrand et al, 2017;Kharanaq et al, 2020), imports the basic parameters of the device in Saber, ANSYS, and other software programs, along with the input/output characteristic curve and the thermal characteristic curve.…”

Section: Modeling Of Conducted Emimentioning

confidence: 99%

EMI challenges in modern power electronic-based converters: recent advances and mitigation techniques

Yuan,

Zhang,

Liang

et al. 2023

Front.Electron.

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The utilization of power electronic-based converters is gaining momentum across a wide spectrum of industries. However, modern power electronic converters operate at higher frequencies compared to conventional power electronic converters, which can lead to higher rates of change in voltage and current during phase switching, and thus potentially produce more severe conducted and radiated electromagnetic interference (EMI). Their electromagnetic compatibility (EMC) has become a critical research topic, and EMI in high-frequency power electronic-based converters is more complex than that in conventional converters. This review presents a comprehensive survey of recent advancements, EMI design, and analysis of modern power electronic-based converters, focusing on the sources and mechanisms of both conducted and radiated EMI, and mitigating techniques. This review also covers the impact of topology optimization, control strategy design, and packaging design on EMC performance. Addressing emerging EMI issues in modern power electronic device-based converters is essential for ensuring safe and reliable operations. Through strategic design optimization and the implementation of EMI mitigation strategies, modern converters can seamlessly be integrated into diverse applications, offering improved EMI performance as a hallmark of their versatility.

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Section: Modeling Of Conducted Emimentioning

confidence: 99%

EMI challenges in modern power electronic-based converters: recent advances and mitigation techniques

Yuan,

Zhang,

Liang

et al. 2023

Front.Electron.

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“…With the development of fast electromagnetic solvers, many large problems can be solved on computers; numerical solution method is rapidly becoming an important mathematical modelling tool for modern electromagnetic engineering [13][14][15]. In [16][17][18][19], a theoretical model for snow media was developed using a new numerical method model-the relaxed hierarchical equivalent source algorithm (RHESA) [20], together with the radiative transfer equation [21]. Using RHESA, snow was modelled in the shapes of spheres, peanuts, droxtals, and hexagonal columns, as opposed to being limited only to spheres in previous approximation models.…”

Section: Introductionmentioning

confidence: 99%

Backscattering Analysis Utilizing Relaxed Hierarchical Equivalent Source Algorithm (RHESA) for Scatterers in Vegetation Medium

et al. 2022

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The backscattering cross section of cylindrical and elliptical disk-shaped scatterers was investigated in this study, utilising a new numerical solution method called the relaxed hierarchical equivalent source algorithm (RHESA). The results were compared with the backscattering cross section of similar cases, using analytical method validation from literature. The objective of this research was to look into the possibility of replacing analytical methods with the RHESA in volume scattering calculations, and integrating it into modelling the backscattering of layers of dense media for microwave remote sensing in vegetation; as RHESA provides the freedom to model any shape of scatterer, as opposed to the limited shapes available of scatterers in analytical method models. The results demonstrated a good match, indicating that the RHESA may be a good fit for modelling more complicated media, such as vegetation, in future studies.

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Model Computation with Second-Order Radiative Transfer Equation for Snow Medium Using Coupled Finite Element Method and Method of Moment and Relaxed Hierarchical Equivalent Source Algorithm

Cited by 2 publications

References 15 publications

EMI challenges in modern power electronic-based converters: recent advances and mitigation techniques

EMI challenges in modern power electronic-based converters: recent advances and mitigation techniques

Backscattering Analysis Utilizing Relaxed Hierarchical Equivalent Source Algorithm (RHESA) for Scatterers in Vegetation Medium

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