Why ELECTRIC VEHICLE.... ????

Why.. Why... Why.... ????

Increases Demand for Electric vehicles

Plug-in electric vehicles (also known as electric cars or EVs) are connected, fun, and practical. They can reduce emission and even save your money.

Fueling with electricity offers some advantages not available in conventional internal combustion engine vehicles. Because electric motors react quickly, EVs are very responsive and have very good torque. EVs are often more digitally connected than conventional vehicles, with many EV charging stations providing the option to control charging from a smartphone app.

Less emission

Just like a smartphone, you can plug in your EV when you get home and have it ready for you to use the next morning. Since the electric grid is available almost anywhere, there are a variety of options for charging: at home, at work or on the road. By charging often, you may never need to go to a gas station again!

But EVs provide more than just individual benefits. EVs can help the United States have a greater diversity of fuel choices available for transportation. The U.S. used nearly nine billion barrels of petroleum last year, two-thirds of which went towards transportation. Our reliance on petroleum makes us vulnerable to price spikes and supply disruptions. EVs help reduce this threat because almost all U.S. electricity is produced from domestic sources, including coal, nuclear, natural gas, and renewable sources.

EVs can also reduce the emissions that contribute to climate change and smog, improving public health and reducing ecological damage. Charging your EV on renewable energy such as solar or wind minimizes these emissions even more. See the difference in emissions between a conventional vehicle and an EV using the calculator on the right. Learn more about how EVs reduce pollution and their lifecycle emissions....

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Introduction to the Design Process

Accreditation Board for Engineering and Technology (ABET) Definition of Design - • Engineering design is the process of devising a system, component, or process to meet desired needs. • It is a decision-making process (often iterative), in which the engineering sciences and mathematics are applied to convert resources optimally to meet a stated objective. • Among the fundamental elements of the design process are the establishment of objectives and criteria, synthesis, analysis, construction, testing and evaluation. • Mechanical design means the design of components and systems of a mechanical nature—machines, products, structures, devices and instruments. • For the most part mechanical design uses mathematics, materials, and the engineering-mechanics sciences. • Additionally, it uses engineering graphics and the ability to communicate verbally to clearly express your ideas. • Mechanical engineering design includes all mechanical...

Braking system in Electric vehicle (Regenerative braking system)

Moving vehicles have a lot of kinetic energy, and when brakes are applied to slow a vehicle, all of that kinetic energy has to go somewhere. Back in the Neanderthal days of internal combustion engine cars, brakes were solely friction based and converted the kinetic energy of the vehicle into wasted heat in order to decelerate a car. All of that energy was simply lost to the environment. Fortunately, we have evolved as a species and developed a better way. Regenerative braking uses an electric vehicle’s motor as a generator to convert much of the kinetic energy lost when decelerating back into stored energy in the vehicle’s battery. Then, the next time the car accelerates, it uses much of the energy previously stored from regenerative braking instead of tapping in further to its own energy reserves. How well does regenerative braking work? To evaluate regenerative braking, we really need to look at two different parameters, efficiency and effectivenes...

Main use of Ultra Capacitor in EVs

ULTRA-CAPACITOR Ultra capacitor plays very essential role in the whole system, so that the new technologies have the such abilities to control them. In the ultra capacitor system, the important contents are the DC-DC converter base on the insulated gate bipolar transistor [IGBT], smoothing aluminum inductor Ls, ultra capacitor and battery pack. During acceleration, the capacitor voltage of ultra capacitor permitted to set free from packed rate charge to one-third of its nominal voltage. During deceleration, the energy of capacitor which is released during acceleration period is improved back and charge up the ultra capacitor. Ultra- capacitor is mainly used because it store up 20 times more energy as evaluate to electrolytic capacitor as shown in figure 6. Ultra capacitor also improves the transient performance in EVs, also increase lifespan of batteries. Ultra capacitor provides additional supply to the electric vehicles and also extends the distance.

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