Results 31 to 40 of about 4,716 (198)
Zhejiang Daxue xuebao. Lixue ban, 2016 为解决独立光伏发电系统中太阳能转换效率低、蓄电池使用寿命短等问题，将最大功率点跟踪技术(MPPT)和蓄电池优化充放电控制策略应用到太阳能充电系统中.同时，应用以TL494为核心的推挽升压电路，降低系统对太阳光的依赖性，在没有太阳光时，系统由储存的蓄电池能量通过升压电路给负载供电.据此设计了一种以Atmega 88单片机为核心，由DC-DC充电变换器和蓄电池升压电路组成的直流电源.实验结果表明，采用MPPT充电方式可以实现对蓄电池充放电的优化管理，其平均充电效率达到了91.24%，延长了蓄电池的使用寿命 ...
WANGXiumin(王秀敏) +4 more
doaj +1 more source
A Phase-Shift-Modulated LLC-Resonant Micro-Inverter Based on Fixed Frequency Predictive-MPPT
Energies, 2020 Maximum Power Point Tracking (MPPT) control is an essential part of every photovoltaic (PV) system, in order to overcome any change in ambient environmental conditions and ensure operation at maximum power.. Recently, micro-inverters have gained a lot of
Omar Abdel-Rahim +5 more
doaj +1 more source
Advanced Materials, EarlyView.Molecularly engineered self‐assembled monolayers (SAMs) featuring extended conjugated terminals facilitate superior interfacial coupling with the organic solar cell active layer. By physically anchoring the local morphology, this design suppresses thermal degradation, allowing devices to operate at 85°C for 150 h before degrading to 90% of their ...
Gengxin Du +17 more
wiley +1 more source
Advanced Science, EarlyView.A BCP‐derived buried‐interface strategy establishes Na‐BCS as a chemically bonded molecular bridge. By combining sulfonate anchoring to SnO2 with preserved BCP–Pb2+ coordination, Na‐BCS simultaneously passivates oxide‐ and perovskite‐side defects, suppresses non‐radiative recombination, and delivers a surface recombination velocity of 8.6 cm s−1, a ...
Dong Hyun Kim +9 more
wiley +1 more source
Advanced Energy Materials, EarlyView.A wide process window is essential for the commercialization of perovskite photovoltaics. Here, we demonstrate an amorphous π‐conjugated passivator having an asymmetric mono‐iodine substituent on a carbazole moiety imparts a high dipole moment, desirable molecular energy levels, and high thickness tolerance, thereby enabling a wide process window in ...
Hyun Seo Kim +17 more
wiley +1 more source
Jurnal Elkomika, 2022 ABSTRAK Perubahan laju aliran air pada pembangkit listrik pikohidro dapat menyebabkan daya dan tegangan yang dihasilkan generator menjadi tidak stabil. Penelitian ini bertujuan untuk merancang Maximum Power Point Tracking (MPPT) dengan algoritma logika ...
SOFIAN YAHYA +3 more
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Advanced Energy Materials, EarlyView.Multiscale perspectives on how excess charges in soft lead halide perovskites induce operational instability in photovoltaic devices are presented. Localized carriers formed under thermodynamic non‐equilibrium states modify atomistic interactions and drive lattice distortions, accelerating device degradation.
Joo‐Hong Lee +6 more
wiley +1 more source
Mayfly Optimization Algorithm for MPPT of PV System under Partial Shading Conditions [PDF]
E3S Web of ConferencesMaximum power point tracking (MPPT)methods are most popular to harvest maximum energy from renewable energy sources for generating electric power. Among many renewable energy sources, solar energy is a primary and mostly available on the earth. Generally
Pratap Singh Akhilendra +3 more
doaj +1 more source
Advanced Energy Materials, EarlyView.A simple solution‐based ITO surface treatment unlocks the full potential of phosphonic‐acid SAMs by balancing surface hydroxylation, conductivity, and homogeneity. Moderately hydroxylated interfaces yield uniform, electronically favourable contacts, enhancing charge extraction, stability, and thermal‐cycling resilience, with broad applicability across ...
Rik Hooijer +18 more
wiley +1 more source
Performance Analysis of Stand-Alone Wind Energy Power Conversion System [PDF]
E3S Web of ConferencesEarlier, the production of electricity was primarily reliant on non-renewable sources such as coal and diesel. However, these sources have limited availability and will eventually be depleted. Therefore, it is crucial to shift our focus towards renewable
Singar Mahendra Kumar +3 more
doaj +1 more source