Results 21 to 30 of about 1,001,875 (303)

Predicting Photovoltaic Module Lifespan Based on Combined Stress Tests and Latent Heat Analysis

open access: yesEnergies
In this study, long-term reliability tests for high-power-density photovoltaic (PV) modules were introduced and analyzed in accordance with IEC 61215 and light-combined damp heat cycles, such as DIN 75220.
Woojun Nam   +5 more
doaj   +1 more source

A Discrete-Time Low-Frequency-Ratio Nearest Level Modulation Strategy for Modular Multilevel Converters With Small Number of Power Modules

open access: yesIEEE Access, 2019
There has been increased usage of modular multilevel converters (MMCs) in the medium-voltage traction drives for increased efficiency and reduced switching losses.
Ke Shen   +3 more
doaj   +1 more source

Modeling and Evaluation of SiC Inverters for EV Applications

open access: yesEnergies, 2022
In this paper, the efficiency benefits of adopting Silicon–Carbide devices for electric vehicle applications are studied. A hybrid time and frequency domain-based simulation tool is developed for the Silicon–Carbide (SiC) traction inverter modeling.
Hui Su   +5 more
doaj   +1 more source

Optimization Design of Packaging Insulation for Half-Bridge SiC MOSFET Power Module Based on Multi-Physics Simulation

open access: yesEnergies, 2022
With the development of power modules for high voltage, high temperature, and high power density, their size is becoming smaller, and the packaging insulation experiences higher electrical, thermal, and mechanical stress.
Wenyi Li, Yalin Wang, Yi Ding, Yi Yin
doaj   +1 more source

A Simple and Non-Destructive Method to Measure Per-Terminal Baseplate Coupling of Power Modules

open access: yesIEEE Open Journal of Power Electronics, 2023
The fast slew rates of wide bandgap semiconductors can produce common-mode currents that flow through the baseplates of multi-chip power modules. These currents increase the electromagnetic signature of these devices and force designers to reduce edge ...
Brian T. DeBoi   +2 more
doaj   +1 more source

HEAT PUMP AND AIR CONDITIONING GRADING SYSTEMS AND METHODS [PDF]

open access: yes, 2019
An expectation module determines an expected average power consumption of a heat pump for a predetermined period as a function of indoor and outdoor temperatures of the building during the predetermined period.
Alsaleem, Fadi Mohammad
core   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Organoids in pediatric cancer research

open access: yesFEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

open access: yesFEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho   +3 more
wiley   +1 more source

Analysis of Power Modules Including Phase Change Materials in the Top Interconnection of Semiconductor Devices

open access: yesElectronic Materials
Power modules can occasionally be exposed to brief power peaks, causing overheating and premature failure of the power semiconductor devices. In order to overcome this issue without oversizing the module or its cooling system, this study aims to design a
Rabih Khazaka   +3 more
doaj   +1 more source

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