All-perovskite PV-powered battery for portable electronics
Scientists have used a dual-functional, material-sharing strategy with ethyl viologen diiodide to achieve synergistic performance enhancement in PV-powered batteries. The system was reportedly able to power a wearable glucose monitor for 24 hours.
Sungrow debuts 2.5 kW microinverter
The Chinese company said its new microinverter supports four independent MPPT inputs with DC input currents up to 18 A.
Novel MPPT technique for EV charging combined with PV, fuel cells
Scientists in India have designed a system that uses PV panels, a proton-exchange membrane fuel cell, battery storage, and a supercapacitor. It also relies on an adaptive neuro-fuzzy inference system-based MPPT that reportedly achieves an efficiency of 98.7%.
Novel switched capacitor boosting inverter for PV usage
Researchers have designed a new switched-capacitor-based multilevel inverter topology with nine switches. They have tested it in simulations and in hardware-in-the-loop tests. Efficiency reached up to 96.5%.
Dual PV module cooling tech based on water, air
Scientists in Hungary have built an experimental rig that uses a 60 W polycrystalline solar panel with 152 holes drilled into its frame for air cooling, as well as high-conductivity copper alloy pipes and fins placed on its back for water cooling.
Wireless electric vehicle charging tests improve efficiency by 88%
Scientists in India have simulated and tested a prototype wireless charging system for electric vehicles, with a three-port DC–DC converter at its core and have found it achieved an improved efficiency of 88%.
K2 Systems unveils new pitched roof mounting solutions
K2 Systems has introduced two new pitched roof mounting components for residential solar: the SingleHook 3S Light, made of aluminum and stainless steel; and the InsertionRail 2.0, an aluminum mounting rail.
Photovoltaics for atmospheric water harvesting
A scientist in Turkey has simulated eight PV-supported hybrid atmospheric water harvesting systems and compared their performances. They were all considered to operate with R1233zd(E), R1234yf, and R600a, as well as R32 refrigerants. The required PV system size was as low as 20 m2.
Photovoltaics vs. photovoltaic-thermal
Researchers in India say that photovoltaic-thermal (PVT) systems offer greater performance stability than conventional PV systems in hot climates. Using irradiance and temperature data, the team applied a Random Forest model that predicted efficiency classes with 97% accuracy.
Different dust, different impact on PV module performance
Scientists in Germany have collected dust from Qatar, Morocco and Thailand to analyze the impact on the performance of uncoated solar glass and uncoated PV mini-modules. Their analysis has shown that dust coverage could range from 4% to 60%.
