Foxnum Technology (Taiwan)

Fossil fuels are depleting at very fast rate and will have shortages in near future. Also, prices of fuels increase day-by-day, demands of renewable energy sources increases for electrical power generation. Wind energy is available in nature free of cost and in abundant form, so is an excellent option for generation of electric power through wind turbine technology. Rapid increase in global energy requirement resulted in considerable attention towards renewable energy sources as there are shortages of fossil fuels. Wind energy is one of the clean and potential renewable energy resources. It is free of cost and available everywhere abundantly on the earth. VAWT is one of the important options to produce sufficient electricity for household’s application in rural and urban areas as it works independently irrespective of the direction of wind. Savonius turbine is a vertical axis wind turbine which is drag type and characterized as cheaper, simple in construction and can operate at low speed. This makes it suitable for generating electrical power for household application at rural and urban areas. This research work contains computational fluid dynamics (CFD) analysis of different models of Savonius wind turbines at constant wind speed of 10.5 m/s to determine the power output of the turbine and the effects of various design parameters like blade profile, number of blades, aspect ratio and swept area on the performance of power coefficient (Cp) of the turbine. It was found from CFD analysis that, the power output mainly depends on swept area of the blade and hence full profile blade turbine has more power coefficient than the cut blade profile turbine.

A new p-channel nitride-based one-time programmable (OTP) memory was developed for advanced-logic nonvolatile-memory (NVM) applications. A 0.296-mum2/bit (~35 F2) OTP cell, i.e., 0.592 mum2/cell, with a self-aligned nitride storage node was fabricated using standard 90-nm CMOS processes and is fully independent of gate oxide for high scalability. Additionally, the ultrahigh-density OTP cell exhibits excellent retention, immunity against disturbance, and a wide on/off window under the band-to-band hot electron programming. In summary, the new p-channel OTP cell is a very promising solution for use in high-density logic NVM applications beyond the 90-nm technology node.