In the automotive world, electric cars are making big waves, with their IC engine counterparts anticipated to become obsolete by 2025, without the use of noise, pollution, and high performance. This post will unveil the hidden technologies behind the Electric Tesla car Model S which recently became the world’s fastest accelerating car. We will see how electric tesla car has achieved superior performance by analyzing the technology behind the induction motor, inverter Lithium-Ion battery Power source, and above all the synchronized vehicle mechanism in a logical step by step Manners. The control of Tesla is a development created about 100 years after the induction motor by the great scientist “Nikola Tesla.”
The motor is caused by the stator and rotor in two main parts. 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 induces current on the rotor bars to turn the rotor lies behind the RMF in an induction engine.
There are no brushes or permanent magnets in an induction motor. It is robust and strong at the same time. The induction motor is beautifully designed because its speed depends on the rate of AC power. Therefore, we can adjust the drive wheel speed only by increasing the frequency of the power supply. This simple fact enables the regulation of electric Tesla car speed.
A variable frequency drive is the motor supply that in turn controls the motor speed. The engine speed can be from 0 to 18,000 minutes. Compared to the internal combustion cars, this is the greatest advantage electric cars have. An internal combustion engine produces useful torque and power output within a limited speed range, therefore it is not a smart idea to directly connect the engine rotation to the drive wheel. An inductive motor should be introduced to change the speed of the drive wheel but work efficiently in every speed range. Therefore, no varying speed transmission for an electric car is needed. The piston’s linear movement has to be converted into rotary movement, causing major mechanical balance problems. It is not only that an induction motor is not self-started, but the power output of an IC motor is also always uneven. To solve these problems, many accessories are required. In comparison, with an induction motor most elements in the IC engine can be eliminated here with direct rotational movement and consistent power output.
As a result of these issues, an induction motor obviously results in better vehicle efficiency and higher power to weight relationship, but where does the engine get power from?
The battery generates DC electricity so that a transformer is used for this purpose before the motor is supplied to a generator. A battery pack produces a DC computer.
The Ac power frequency also regulates the motor speed, which is controlled with this power electronic device. In addition, the inverter may even differ in the amplitude of the ac power that controls the motor output in turn. The inverter, therefore, serves as the electric Tesla car’s heart. Now let’s focus on the pack of batteries. You’re surprised to find that they are only a collection of standard lithium-ion cells that are similar to those used in your everyday life. The cells are connected to the power required for running your electric car in a combination of series and parallel. The metallic internal tubes of the glycerol coolant pass through the cell space. The use of most small cells instead of some big cells means efficient cooling is one of the main inventions of “Tesla.” It growing thermal hot spots as little as possible and even temperature spread leads to higher battery life. There are 16 modules in this battery pack that comprise about 7,000 cells. Heated Glycerol is cooled down via a radiator that is fitted to the front of a vehicle. There are 16 modules in the battery pack. You can also see how the car center of gravity is lowered if such a battery pack is mounted close to the ground. The decreased inertia greatly increases the balance of the vehicle. Also, the large battery pack offers structural rigidity against side collisions throughout the floor. Now let’s return to the train of Tesla. The engine power is transferred via a gearbox to the driving wheels. Tesla model “S” uses a single transmission as it is already discussed, because the engine is efficient in a variety of working conditions. You can see that in two steps the engine’s output speed is reduced. Even in an electric Tesla car, it is easy to achieve the reverse gear. Change the sequence of the power phase. Speed reduction and the associated torque multiplication are the only purposes of electric car transmission. A differential is the second component of the Gearbox. It is transferred to the reduced speed drive. This is a simple open differential, you can see. Open differentials, however, have a traction control problem. Though, why does such a sophisticated car use an open difference instead of a slight slip gap?
The answer is that the open difference is rougher and more torque can be carried. Two approaches are used to overcome the problem that emerges in an open differential: selective braking and power supply cuts. This power supply is not so reactive in an internal combustion engine by increasing the fuel. However, the power supply cuts in the induction motor are extremely responsive and an effective way to achieve traction control. All of this can be done with the aid of sensors and controllers using a state-of-the-art algorithm. In short Tesla Motors has substituted smart technology for a complex mechanical hardware device. Were you aware that a single pedal could drive an electric car efficiently?
This is because the braking system is powerful and regenerative. This means saving the car’s enormous kinetic energy in the form of electricity without heat loss. In an electric car, the regenerative braking comes into operation when you remove the accelerator pedal. Ironically, the same induction motor serves as a generator during the regenerative braking process. The rotor of the induction engine is driven by the wheels here. We know that the speed of the rotor is less than RMF in an induction motor. To transform the engine into an engine. You only need to be sure that the speed of the rotor is higher than the RMF. In the adjustment of the input power frequency and holding the speed of the RMF below the rotor speed is of crucial importance in the process. In the stater coils that are far higher than the electricity supplied, this generates electricity. After the conversion, the generated power can be stored in the battery pack. During this cycle, an opposing electrical force acts on the rotor, slowing the drive wheels and the vehicle. This means that during the drive, the vehicle speed can be controlled with a single pedal accurately.
For a complete stop, the brake pedal can be applied. Electric cars are, as you may know, far safer than internal combustion cars. With the drawbacks of electric cars evaded by the emergence of better technology, electric vehicles are promised to be the future cars. The cost of electric vehicles is significantly lower than those of an IC motor car.
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