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Abstract

Electric vehicles were introduced in the year of 1908, where they have larger battery for power supply. Now- a- days the technique for charging e-bikes is done either by using grid supply or solar power. This paper says about charging circuit for batteries which uses both solar power and power from the grid to charge the electric vehicles. The charging with solar helps to reduce the emission from power grid. Ever-increasing demand for fuel supply, rising fuel prices, and increased environmental awareness among masses are paving the way for electric vehicles (EVs). Although, in recent years EV market has seen an exponential growth, one of the major challenges faced by this automotive/vehicular market. Now the Indian government had ordered to Indian Vehicle Association to launch the electric vehicles with in 2023. But the charging of electric Batteries has taken more time, which compare to fossil fuel and gas. To overcome this issue use of turbo charger, to reduce the charging time as well as self charging by solar during running time is proposed. The charger uses the source from EB grid and solar as well as at parking time. The results proves that proposed work have reduced the charging time of the lithium ion battery compared to the conventional charging technique and all under controlled temperature raise.

Double-gate (DG) MOSFETs came into popularity because of its excellent scalability and better immunity to Short Channel Effects. They are used for CMOS applications beyond the 70 nm node of the SIA roadmaap. However DG devices with channel lengths below 100nm show considerable leakage current and threshold voltage roll off. In this paper, we investigate the influence of channel engineering on the performances of Double Gate (DG) MOSFETs using high-k dielectrics for system-on-chip applications. A Single Halo Double Gate (SH DG) MOSFET is simulated using 2D device simulator and performance is analysed for parameters such as Early voltage, electron velocity and electron mobility. The impact of high-k gate dielectrics on the device short channel performance is studied over a wide range of dielectric permittivity. The device shows 20% increase in drain current as compared to conventional MOSFET. The integration of high-k gate dielectrics further enhances the performance. Drain current increases by 28% and early voltage increases by 34% as the dielectric value increases. The electron velocity also increases with increasing dielectric value.

Polyaramid is a type of aromatic polyamide that is used to strengthen materials due to its great thermal stability. The effect of adding 2 wt% of nano titanium oxide and 5% polyaramid fibers to an epoxy matrix composite reinforced with three distinct natural fibers (jute, bagasse, and coir fibers) on the structure and characteristics of the composite was examined in this study. Hand lay-up approach was used to manufacture 40 wt. percent each fiber, separately reinforced biocomposites with the addition of polyaramid, and TGA experiments were used to investigate the thermal stability of jute/bagasse/coir composites with polyaramid. The thermal degradation of the polymer took place in five steps, according to the Broido plots, with the second step being the slowest and rate determining. Because less energy is used to remove hemicellulose and loosely binding water contained in bagasse fiber, Broido plots revealed that the first step heat degradation had the lowest activation energy (Ea).