The switching frequency of power electronic devices has become much higher than before, which brings great challenges to real-time simulators. small time step in high simulations remarkably increases the difficulty satisfy requirement. This article realizes accurate simulation a solid-state transformer (SST) with 50 kHz at 250 ns on field-programmable gate array (FPGA)-based platform. hybrid companion circuit modeling method and compact-electromagnetic transient program (EMTP) algorithm are...

Photovoltaic (PV) cells, widely adopted in solar energy applications, achieve a maximum efficiency of only 30% and remain inactive during nighttime. In contrast, solar-thermal power generation has surpassed 50% efficiency. To address these limitations, we introduce the Solar- Radiative cooling -Thermoelectric system (Solar-RC-TE), integrating energy, radiative (RC), thermoelectric generation. This enhances density, reduces consumption, lowers costs, minimizes environmental impact while...

The microstructure and high frequency properties of facing-target sputtered epitaxial γ'-Fe4N films were investigated in detail. It was found that the eddy current ultrathin is too small to influence ferromagnetic resonance (FMR) linewidth, where linewidth mostly determined by intrinsic damping two-magnon scattering (TMS) process. In relatively thick films, TMS process can significantly affect due roughness on sample surface. However, a thin film quite weak because its smooth Gilbert...

Abstract The electric vehicle (EV) charging station is a critical part of the infrastructure for wide adoption EVs. Real-time simulation an EV plays essential role in testing its operation under different operating modes. However, large numbers high-frequency power electronic switches contained chargers pose great challenges real-time simulation. This paper proposes compact electromagnetic transient program (C-EMTP) algorithm FPGA-based with multiple chargers. C-EMTP transforms traditional...

Organic/ferromagnetic spinterface plays a significant role in organic spintronics and the manipulation of will help to optimize performance molecular devices. Here, we systematically investigate how magnetic anisotropy can be tailed by adsorbing different molecules on CoFe3N surface. It is found that adsorption C6H6, C6F6, SC4H4 FeCo-hollow site enhances perpendicular (PMA) CoFe3N. The redistribution Fe/Co d-orbitals near Fermi level has an important effect modulation PMA. Asymmetric...

Anisotropic magnetoresistance (AMR) of the facing-target reactively sputtered epitaxial γ'-Fe4N/CoN bilayers is investigated. The phase shift and rectangular-like AMR appears at low temperatures, which can be ascribed to interfacial exchange coupling. comes from bias (EB) that makes magnetization lag behind a small field. When γ'-Fe4N thickness increases, appears. should combined contributions including EB-induced unidirectional anisotropy, intrinsic layer spin scattering.

The <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">L</i> / xmlns:xlink="http://www.w3.org/1999/xlink">C</i> -based fixed-admittance model ( model) is usually used in the real-time simulation for power electronic converters. However, switch suffers from problems of virtual loss and complicated optimal parameter settings. This article proposes a small-step synthesis method suitable By modeling converter with small (nanosecond) time-step...

In modular multilevel converter (MMC)-based solid-state transformer (SST), the MMC dominates total volume and power loss. The loss of are influenced by various factors, such as operating frequencies, waveforms ac-link voltage, numbers submodules, well modulation methods. Their impacts on have not been comprehensively analyzed evaluated. To investigate evaluate based conditions, computational model is developed for MMC-SST according to its operational principles. considered parameter design...

Abstract Modulating the orbital configuration of ferromagnetic metal (FM)/metal‐oxide (MO) interfaces is crucial for obtaining a controllable interfacial magnetism constructing energy‐efficient magnetic memory and logic devices. The traditional works regulation depend on external fields, such as electric field, temperature stress field. This work proposes novel modulation strategy by modifying coordination environment FM/MO interface with nitrogen (N) incorporation. By preparing Fe/MgO...

By spin-dependent screening effect-induced magnetoelectric coupling, magnetization can be largely controlled by electric fields without an auxiliary magnetic field.

The cascaded H-bridge (CHB)-based solid-state transformer (SST) is a core interface device for power conversion in the distribution network. However, complicated structures and higher switching frequencies bring significant challenges to real-time simulation hardware-in-loop (HIL) testing. This article proposes field-programmable gate array (FPGA)-based hierarchical parallel method SST, which mainly includes highly solving at operation level, module system level. A dual-port equivalent model...

Abstract With the interconnection of regional grids and increasing penetration renewable energy, order power system model is getting higher higher, which brings great challenges to accuracy real‐time performance electromagnetic transient (EMT) simulation. The simulation systems with a high proportion energy requires sharp increase in hardware platform parallelism algorithm. To solve this problem, paper proposes fine‐grained parallel modelling method for inspired by latency insertion used...

Electric-field-controlled magnetic anisotropy in ferromagnetic/PMN-PT multiferroic heterostructure attracts great interest due to its promising application for energy-efficient information storage. Herewith, we investigate the effect of ferroelectric polarization and interfacial oxidation on Fe4N/PMN-PT using first-principles calculations. The reversal produces a sizable increase perpendicular heterostructures while changes sign anisotropy. modulation is attributed spin–orbit-coupled Pb p...

Abstract The associated discrete circuit (ADC) model for switches is widely used in electromagnetic transient simulation of power electronic system. When using ADC model, the problem virtual loss caused by L/C switching cannot be ignored and small time‐step (≤2 μs) usually required to guarantee accuracy, both which will limit application model. To cope with this, a fractional method (FTSSM) suitable system proposed. derived from compact form electro‐magnetic program (EMTP) algorithm,...