The movement of people and things can be used anywhere between a quarter to a third of all the energy consumed in a given region, and it can emit the same proportion of greenhouse gases.
The challenge of a sustainable energy future, the electric tank
Simply put, there cannot be a sustainable energy future without sustainable mobility. Fortunately, recent technological advances, combined with stricter government environmental regulation and generational changes in consumer preferences, are opening the door to significant developments in the transportation industry and especially electric cars.
At the heart of energy and mobility, Efinetico iswell positioned to support the needs of our customers. Our emphasis is on the twin challenges of sustainable transportation:
In all cases, we help our clients understand options, create business cases, address regulatory barriers, and design both regulatory and market-based strategies to accelerate the advent of sustainable mobility. Our work, covering commercial, economic and technological aspects, extends further to electricity storage, the integration of the electric vehicle network, charging infrastructure, prices and more.
The latest calculations show that while natural gas savings in energy use can be 65% compared to gasoline. Electricity can be 50%.
Main parts of an electric car
The charger converts electricity alternately (the property’s internal electrical network) into dc current, so that the main battery can be charged.
Lithium-ion batteries store the energy coming from the charger. This main battery is the medium by which the entire electric cart is powered. In some, there is a secondary battery that stores regenerated energy at the time of braking. The current used to power the 12 V auxiliary batteries, which are the ones that power the car’s electrical auxiliary components.
The inverters are responsible for transforming the DC current of the main battery into alternating current. This component only exists in electric vehicles with AC motors.
The motor can be AC or DC current. ACrs need an inverter to convert battery power (DC) to AC.
Disadvantages of electric motor in cars
The main disadvantage and the most important is the autonomy of the electric trolley. This depends on engine efficiency and battery storage capacity. The fact that at 100 or 120 kilometers of travel you have to recharge the batteries limits a lot to users. In contrast, with combustion engines the time between tanking and tanking is much higher. However, we are already seeing electric vehicles with ranges of up to 300km.
Another drawback related to the autonomy of the vehicle is the charging time, as it takes hours to perform a full charge.
In addition, electric batteries have an expiration date, as they degenerate with use and begin to have less charging capacity.
Advantages of the electric car
An electric motor does not burn fuels during use, so it does not emit gases into the atmosphere. (although it is quite possible that in the production of electricity if any fossil fuel is burned)
A mass-produced electric motor is more compact, cheaper and much simpler than an internal combustion engine. It doesn’t need a cooling circuit, no oil, no too much maintenance.
It makes virtually no noise when operating and its vibrations are imperceptible. It has no heat loss, so they are more efficient. With no oscillating elements, you don’t need flywheels or spatial fasteners to isolate you from the rest of the car. By generating little heat and not suffering vibrations its duration can be very high.
An electric motor doesn’t need to have gear changes. For speed lovers, an electric car has significantly superior acceleration.
It does NOT require an engine centralization, it can have a small motor on each wheel instead of a «central» one coupled to a transmission. Which may mean a new distribution of car space.
In terms of the efficiency of the electric motor, it is around 90%. Due to thermodynamic limitations a diesel engine would be in efficiencies of up to 40%, this being superior to the efficiency of a gasoline engine. It is easy to recover power from braking (or part of it) to recharge batteries, because an electric motor can also be an electric generator.
Another great advantage of the electric car is its reversible process. This means that just as it charges its battery through the mains, the car can also provide power to the mains, so that
Reversible. This fact is known as Vehicle to Grid, this is especially cost effective in power grids with differentiated time prices.