Abstract Perovskite degradation induced by surface defects and imperfect grain boundaries of films seriously damages the performance perovskite solar cells (PSCs). Meanwhile, conventional organic molecules cannot maintain long‐time passivation effects under stimulation external environmental factors. Here, efficient stable in is realized preparing formic acid‐functionalized 2D metal–organic frameworks (MOFs) as terminated agent. Through robust interactions between exposed active sites PbI 2...

Crane defect detection traditionally relies on manual inspection and image processing techniques, which struggle with complex types subtle features. Although deep learning has improved performance, challenges insufficient capability persist. We propose a recognition localization method for crane components using the YOLOv5s-CUA fusion enhancement algorithm. A dataset specifically floating defects is first established. The YOLOv5s model then enhanced by replacing nearest-neighbor...

Although the asymmetric α‐alkylation of carbonyl compounds with activated olefins has already been established, extending this methodology to less or nonactivated remains a significant challenge due polarity mismatch in these ionic processes. An alternative approach involves activation parent into electrophilic α‐carbonyl radicals, which could potentially overcome limitation. However, lack efficient catalytic systems impeded wide adoption strategy, particularly realm reactions. Here, we...

The boundary stabilization problem of a star-shaped type II thermoelastic system is considered, where there nonuniform bounded disturbance at the control end. A time-varying extended state observer proposed to estimate and cancel disturbance, thereby largely removing uncertainties simplifying feedback law design. exponential stability shown for observer, so are well-posedness properties closed-loop system, all based on linear operator semigroup theory. Finally, it that disturbances can be...

Nowadays people pay more and attention on renewable energy, but existing grid is not enough to accept scale especially distributed energy. The structure of energy internet similar with information Internet that consists the router, power generation equipment, storage load. Among them, router most critical equipment responsible for management, voltage conversion AC-DC conversion. Energy friendly environment communicating user in real time achieving plug play. development has just begun still...

Chaos is a kind of quasi-stochastic behaviors determinate nonlinear system. in three typical topology power electronic converters with close loop controller studied this paper. Recently, how to apply chaos has become the researching focus, control basic problem application chaos. To deal problem, some existing methods are reviewed and their features analyzed, then, paper places emphasis on control. Diversity chaotic systems are, diversity are.

The analytical and experimental demonstration of subharmonic synchronization phase shifting a push-pull self-oscillating mixer is presented for the first time. Inherent high mixing gain circuit exploited to generate strong signal at same frequency reference signal, which related local oscillator's (LO) information. A error between this extracted in comparator before locking. Analytical modeling stabilization presented, also experimentally verified 12 GHz. This demonstrates efficient locking,...

Energy router is the core equipment of energy internet with function that control and information, satisfy different requirements management through network. The key solid state transformer (SST) forms energy. Ultimately, basic design considerations components E-router in terms power conversions, communication are summarized details.

In modern society, in order to solve the traditional energy sources more serious environmental pollution and shortage problems, all countries are vigorously promoting development of new low-carbon electricity. As a clean, renewable small footprint's green energy, utilization technology wind power is mature, so it has been developed utilized world. This overview describes advantages using power, status China foreign future trend power. Provide reference for people better understand current...

As an significant way to improve quality of electric energy, modern reactive power compensation technology has become indispensable part in motor now. First all, research background and importance were introduced, followed by emphatical introduces about the principle conception factor different situation, then some method energy saving are analyzed. At last, optimal voltage tracking which is used for energy-saving introduced briefly.

In 21st century, Electric vehicle(EV) as a green transportation tool, EV has won great attention from researchers, leading to series of intensive and extensive studies. With the development high-storage battery EV, number will rise dramatically, so that random charging discharging behavior bring new challenges safe stable operation power grids. The paper introduces briefly some aspect including studies on government policies, methods, key techniques, impacts charging, solutions related...

As the standard bidopants of hole transport layers (HTLs) in perovskite solar cells (PSCs), bis(trifluoromethane)sulfonimide lithium salt (Li‐TFSI) and 4‐ tert ‐butylpyridine not only induce adverse influence on quality thin films, but also seriously impair long‐term stability devices. Herein, a metal–organic framework‐derived 2D graphitic N‐rich porous carbon (NPC) is first introduced into HTLs as an effective auxiliary additive. The introduction NPC significantly reduces aggregation salts...

An errorable car-following model is presented in this paper. The was developed to predict the situational risk associated with distracted driving. To obtain longitudinal driving patterns, paper analyzed and synthesized NGSIM naturalistic driver traffic database identify essential behavior characteristics. data modified according from cognitive psychology concepts examine probabilistic nature of due internal vehicle distractions. microscopic validated, which can be fully integrated...

Photovoltaic power generation system (PV system) is a device which changes the solar into electricity by cells and principle of use semiconductor materials electronics characteristics P-V conversion. PV its application profound research project, facing 21st century, gathers utilization green renewable energy, improve ecological environment, ameliorate people's living conditions as integral whole will be great benefits to economy, politics, coupled with society, also contains rich academic...

This article presents a method for monitoring the aging of insulate gate bipolar transistor (IGBT) module bond wires based on spectrum characteristics differential mode (DM) interference signals. The buck converter composed IGBT modules is used as device under test. path DM current in passes through module, so more suitable status module. electromagnetic (EMI) mainly generated by rapid decrease collector current, and degree directly related to EMI signal. inside monitored peak value signal...

Energy Internet, integrates power, information and so on, can be organized according to the Internet architecture design concept of energy. router is core equipment energy internet with function that control information, satisfies different requirements management through network. The key solid transformer forms Ultimately, achievement needs combination technology technology.

Transportation has greatly benefited the cities' development in modern civilization process. Intelligent transportation, leveraging advanced computer algorithms, could further increase people's daily commuting efficiency. However, intelligent as a cross-discipline, often requires practitioners to comprehend complicated algorithms and obscure neural networks, bringing challenge for techniques be trusted deployed practical industries. Recognizing expressiveness of pre-trained large language...

The High Voltage Direct Current (HVDC) transmission technology employing modular multilevel converters (MMCs) can effectively enhance the efficiency and stability of offshore wind farms, thereby aiding promotion large−scale utilization new energy. This holds significant importance for achieving dual carbon goals. Aiming at problem negative sequence current circulation in MMC−HVDC systems, a suppression strategy based on augmented order decoupling linear active disturbance rejection control...

Recently, event-based vision sensors have gained attention for autonomous driving applications, as conventional RGB cameras face limitations in handling challenging dynamic conditions. However, the availability of real-world and synthetic datasets remains limited. In response to this gap, we present SEVD, a first-of-its-kind multi-view ego, fixed perception dataset using multiple within CARLA simulator. Data sequences are recorded across diverse lighting (noon, nighttime, twilight) weather...

In this study, Sr2MgSi2O7:Eu2+,Dy3+ long-afterglow luminescent materials have been successfully prepared via sol-hydrothermal method. The sample shows good crystallinity and optical properties. sintering time temperature great impacts on the crystallization process luminescence Further, adding of H3BO3 has found to be for formation appropriate amount addition helps improve performance afterglow. Crystallization samples can improved by changing system