Electric cars are making big waves in the automobile world. These noise-free, pollution-free and high-performance vehicles are expected to make their I.C. engine counterparts obsolete by 2025. This video will unveil the hidden technologies behind the Tesla Model S, which recently became the world’s fastest accelerating car. We will see how electric cars have achieved superior performance by analyzing the technology behind the induction motor, inverter, lithium ion battery power source, regenerative braking and above all, the synchronized vehicle mechanism, in a logical, step-by-step manner. The working and features of Tesla car is explained here with help of animation.
Electric cars are making big waves in the automobile world these noise-free, pollution-fre and high-performance] vehicles are expected to make their ic engine counterparts obsolete by 2025 this video will unveil the hidden technologies behind the tesla model s which recently became the world’s fastest accelerating car we will see how electric cars have achieved superior
Performance by analyzing the technology behind the induction motor, and, above all, the synchronized vehicle mechanism, in a logical step-by-step manner you can see the construction details of the motor here the rotor is simply a collection of conducting bars short-circuited by end rings a three-phase ac power input is given to the stator the three-phase alternating current in
The coils produces a rotating magnetic field. the tesla motor produces a four-pole magnetic field. this rotating magnetic field that induces current on the rotor bars to make it turn in an induction motor the rotor always lags behind the rmf. an induction motor has neither brushes nor a permanent magnet. at the same time it is robust and powerful. the beauty of an induction
Motor is that its speed depends on the frequency of the ac power supply. so just by varying the frequency of the power supply, we will be able to alter the drive wheel speed this simple fact makes electric car speed control easy and reliable the motor supply is from a variable frequency drive, which in turn controls motor speed. this is the most sizable advantage electric
Cars have when compared to internal combustion cars. an internal combustion engine produces usable torque and power output only within limited speed range therefore, directly connecting the engine rotation to the drive wheel is not a clever idea. a transmission must be introduced to vary the drive wheel speed on the other hand an induction motor will work efficiently in any
Speed range thus no speed varying transmission is needed for an electric car moreover an ic engine does not produce direct rotational motion the linear motion of the piston has to be converted to rotational motion this causes major problems for mechanical balancing not only is the internal combustion engine not self-started like an induction motor further, the power output
Of an ic engine is always uneven on the other hand you will have direct rotational motion and uniform power output with an induction motor many components in the ic engine can be avoided here as a result of these factors, a great response rate and higher power to weight ratio comes naturally to an induction motor resulting in superior so before supply get to a motor it has
To be converted to ac this power electronic device also controls the ac power frequency thus controlling the motor speed moreover the inverter can even vary the amplitude of the ac power which in turn will control the motor power output thus the inverter acts as the brain of the electric car you will be amazed to find that they are just a collection of common lithium-ion
Cells similar to those used in your daily life the cells are connected in a combination of series and parallel to produce the power required to run your electric car glycol coolant is passed through metallic inner tubes through the gap between the cells by using many small cells instead of a few big cells this minimizes thermal hot spots and even temperature distribution
Is achieved leading to higher battery pack life there are 16 such modules in the battery pack constituting around 7,000 cells the heated glycol is cooled down by passing through a radiator, which is fitted at the front of the vehicle moreover you can see how such a low height battery pack when fitted close to the ground level will lower the vehicle center of gravity the
Lower of gravity improves the stability of the car considerably the large battery pack is also spread across the floor offering structural rigidity against side collisions the power produced by the motor is transferred to the drive wheels via a gearbox as previously discussed, tesla model s uses a simple single speed transmission because the motor is efficient in a wide
Range of operating conditions you can see that output speed from the motor is reduced in two steps even achieving the reverse gear is quite easy in an electric car. just change the order of the power phase for this the only purpose of electric car transmission is speed reduction and associated torque multiplication the second component in the gearbox is a differential you
Can see this is a simple open differential. however, open differentials, have a problem of traction control but why does such an advanced car use an open differential rather than a limited slip differential? the answer is that the open differential is more rugged and can carry more torque in an internal combustion engine this power supply cut by cutting the fuel is not so
Responsive in an induction motor, however, the power supply cut is quite responsive and an effective means for obtaining traction control in the tesla this can all be accomplished using a state-of-the-art algorithm with help from sensors and controllers in short, tesla motors has replaced a complex mechanical hardware system with smart, did you know an electric car could be
Driven efficiently with the help of just one pedal? this is due to its powerful regenerative braking system that means saving the huge kinetic energy of the car in the form of electricity without wasting it as heat in an electric car, as soon as you release the accelerator pedal the regenerative braking comes into action the interesting thing is that during the regenerative
Braking the same induction motor acts as a generator here the wheels drive the rotor of the induction motor we know in an induction motor the rotor speed is less than the rmf speed to convert the motor to a generator. you just have to make sure that the rotor speed is greater than the rmf speed the inverter plays a crucial role here in adjusting the input power frequency and
Keeping the rmf speed below the rotor speed this will generate electricity in the stator coils, which is way higher than the supplied electricity the generated electricity can then be stored in the battery pack after the conversion an opposing electromagnetic force acts on the rotor during this process, so the drive wheels and the car will slow down this way vehicle speed
Can be accurately controlled during the drive using a single pedal as you might already be aware, electric cars are much safer than internal combustion cars the cost of maintaining and driving an electric car is much lower than that of an ic engine car with the drawbacks of the electric car evaded through the advent of improved technology, electric cars promise to be the
Cars of the future we think mr.. j. who garcia an electric car expert and youtuber for his technical support for this video? your support at patreon.com is highly appreciated. it enables us to make additional free educational videos for you. thank you
Transcribed from video
How does an Electric Car work ? | Tesla Model S By Lesics