Docsity
Docsity

Prepare for your exams
Prepare for your exams

Study with the several resources on Docsity


Earn points to download
Earn points to download

Earn points by helping other students or get them with a premium plan


Guidelines and tips
Guidelines and tips

hybrid vehicles abouth all the hybrid vehicles solar vehicles electrical vehicles, Assignments of Thermodynamics

all hybrid vehybrid vehicles abouth all the hybrid vehicles solar vehicles electrical vehicleshicles

Typology: Assignments

2019/2020

Uploaded on 04/18/2020

druva-rakshith
druva-rakshith 🇮🇳

1 document

1 / 5

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
DRUVA RAKSHITH R
R17ME887
ELECTRIC AND HYBRID VEHICLES ASSIGNMENT
1.List and explain the different charging techniques of electric vehicle.
Ans: CONTACT CHARGING TECHNIQUE
This method involves charging of the EV through direct contact. i.e. a charging cable will be plugged into
the vehicle to charge it. Some of the contact charging techniques are mentioned below.
TRICKLE CHARGE
The slowest method of charging EV at home, using a standard 220V plug.it is only recommended in urgent
cases, with caution and consultation with electricity providers.
AC CHARGE
Having a wall box lets you charge 3-4 times faster using AC Household charging.AC public charging is
also available. DC CHARGE
The fastest way to charge EV at public DC fast charging station with power from 50kW and above. With
this method we can top up our battery from 20 t0 80% in approx. 40 minutes. There are also some
ultrafast charging stations that provide more than 150kW.
NON-CONTACT TYPE CHARGING TECHNIQUE
This type of charging technique uses electromagnetic resonance in order to transfer electricity to charge
the vehicle. It is safer and more economical. This technique does not use any charging cable.
BATTERY SWAP TECHNIQUE
This method makes use of an automatic or semi-automatic system to exchange a depleted battery with a
fully charged one.
SOLAR CHARGING TECHNIQUE
This method uses sun’s solar energy to charge the vehicle. This is method is cheaper compared to other
techniques. As solar energy is free of cost.
--------------------------------------------------------------------------------------------------------------------------------------
2.Explain in detail the concept of regenerative braking and integrated generator.
pf3
pf4
pf5

Partial preview of the text

Download hybrid vehicles abouth all the hybrid vehicles solar vehicles electrical vehicles and more Assignments Thermodynamics in PDF only on Docsity!

DRUVA RAKSHITH R

R17ME

ELECTRIC AND HYBRID VEHICLES ASSIGNMENT

1.List and explain the different charging techniques of electric vehicle.

Ans: CONTACT CHARGING TECHNIQUE

This method involves charging of the EV through direct contact. i.e. a charging cable will be plugged into the vehicle to charge it. Some of the contact charging techniques are mentioned below.

TRICKLE CHARGE

The slowest method of charging EV at home, using a standard 220V plug.it is only recommended in urgent cases, with caution and consultation with electricity providers.

AC CHARGE

Having a wall box lets you charge 3-4 times faster using AC Household charging.AC public charging is also available. DC CHARGE

The fastest way to charge EV at public DC fast charging station with power from 50kW and above. With this method we can top up our battery from 20 t0 80% in approx. 40 minutes. There are also some ultrafast charging stations that provide more than 150kW.

NON-CONTACT TYPE CHARGING TECHNIQUE

This type of charging technique uses electromagnetic resonance in order to transfer electricity to charge the vehicle. It is safer and more economical. This technique does not use any charging cable.

BATTERY SWAP TECHNIQUE

This method makes use of an automatic or semi-automatic system to exchange a depleted battery with a fully charged one.

SOLAR CHARGING TECHNIQUE

This method uses sun’s solar energy to charge the vehicle. This is method is cheaper compared to other techniques. As solar energy is free of cost.


2.Explain in detail the concept of regenerative braking and integrated generator.

Ans: REGENERATIVE BRAKING SYSTEM

Regenerative braking helps Kinetic energy to be converted back to electrical energy during barking. The converted electrical energy during braking is converted into electrical energy in the batteries and ultra- capacitors. Ultra-high-speed flywheel helps to extend the driving range by 10%. Generally, Electric vehicle are equipped with regenerative braking system. Whenever regenerative braking is applied, torque is insufficient to offer the same deacceleration rate as available in conventional type of vehicle. It is a 2-step process involving motor and battery. In simple ways, here the initial Kinetic energy is transformed into electrical energy by the generator and then converted into chemical energy by the battery.

INTEGRATED STARTER GENERATOR(ISG)

The ISG can replaces conventional generators and provides an auxiliary function as conventional automatic start-stop system for better fuel consumption and fuel efficiency. Here the system switches off the combustion system at 0-load such as when standing in the traffic signal and automatically starts in 100 milliseconds when accelerator is pressed. The pulse start technology accelerates the combustion engine to the required cranking speed and only then initiates the combustion process for instant ignition which helps to reduce fuel consumption and emissions.


3.Explain the basic concept of Drive trains used in electric locomotives. Also list the specifications of

electrical drive system used in electric powered locomotives.

Ans: An electric locomotive is powered by electricity from overhead lines or third line or onboard energy storage devices like battery or supercapacitor. In electric locomotives additional efficiency is achieved using regenerative brakes which converts vehicles Kinetic energy into electric energy.

The function of electric locomotive involves pantograph which continuously touches the overhead line or third line running over the bus-bar of the locomotive roof to surge arrester, which in turn is connected to transform through cable. The output of the transformer is fed to the traction motor. the traction is connected to set of gear trains. The motor runs using power supplied by the transformer because of which gear trains runs which is responsible of the movement of electric locomotive.

The specifications of electric drive systems used in electric powered locomotives are:

1)Asynchronous motor: modern traction motor type using 3 phase AC electrical systems. It can be used on both AC and DC electrical railways with suitable control electronics.

2.) Current collected from the overhead line or from third line is returned by axle brush.

3.) Battery: all trains are provided with a battery to provide start up current and to supply the other circuit.

4.) Relay: a device present at the oil cooling circuits of an electric locomotive to detect low oil pressure is known as a relay.

5.) Camshaft: the DC electric traction power circuits use a camshaft to open and close the contactors to control resistance of traction motor power circuit. It is driven by a motor or pneumatic cylinder.

PLAGIARISM SCAN REPORT

Words 878 Date March 30,

Characters 5931 Exclude Url

Plagiarism

Unique

Plagiarized Sentences

Unique Sentences

Content Checked For Plagiarism

YAKSHITH GOWDA S R16ME313 ELECTRIC AND HYBRID VEHICLES ASSIGNMENT 1.List and explain the

different charging techniques of electric vehicle. Ans: CONTACT CHARGING TECHNIQUE This method

involves charging of the EV through direct contact. i.e. a charging cable will be plugged into the vehicle

to charge it. Some of the contact charging techniques are mentioned below. TRICKLE CHARGE The

slowest method of charging EV at home, using a standard 220V plug.it is only recommended in urgent

cases, with caution and consultation with electricity providers. AC CHARGE Having a wall box lets you

charge 3-4 times faster using AC Household charging.AC public charging is also available. DC CHARGE

The fastest way to charge EV at public DC fast charging station with power from 50kW and above. With

this method we can top up our battery from 20 t0 80% in approx. 40 minutes. There are also some

ultrafast charging stations that provide more than 150kW. NONCONTACT TYPE CHARGING TECHNIQUE

This type of charging technique uses electromagnetic resonance in order to transfer electricity to charge

the vehicle. It is safer and more economical. This technique does not use any charging cable. BATTERY

SWAP TECHNIQUE This method makes use of an automatic or semi-automatic system to exchange a

depleted battery with a fully charged one. SOLAR CHARGING TECHNIQUE This method uses sun’s solar

energy to charge the vehicle. This is method is

cheaper compared to other techniques. As solar energy is free of cost. --------------------------------------------

----------------------------------------------------------------------------------------- 2.Explain in detail the concept of

regenerative braking and integrated generator. Ans:

REGENERATIVE BRAKING SYSTEM Regenerative braking helps Kinetic energy to be converted back to

electrical energy during barking. The converted electrical energy during braking is converted into

electrical energy in the batteries and ultracapacitors. Ultra-high-speed flywheel helps to extend the

driving range by 10%. Generally, Electric vehicle are equipped with regenerative braking system.

Whenever regenerative braking is applied, torque is insufficient to offer the same deacceleration rate as

available in conventional type of vehicle. It is a 2-step process involving motor and battery. In simple

ways, here the initial Kinetic energy is transformed into electrical energy by the generator and then

converted into chemical energy by the battery. INTEGRATED STARTER GENERATOR(ISG) The ISG can

replaces conventional generators and provides an auxiliary function as conventional automatic start-

stop system for better fuel consumption and fuel efficiency. Here the system switches off the

combustion system at 0-load such as when standing in the traffic signal and automatically starts in 100

milliseconds when accelerator is pressed. The pulse start technology accelerates the combustion engine

to the required cranking speed and only then initiates the combustion process for instant ignition which

helps to reduce fuel consumption

and emissions. ----------------------------------------------------------------------------------------------------------------------

---------------- 3.Explain the basic concept of Drive trains used in electric locomotives. Also list the

specifications of electrical drive system used in electric powered locomotives. Ans: An electric

locomotive is powered by electricity from overhead lines or third line or onboard energy storage devices

like battery or supercapacitor. In electric locomotives additional efficiency is achieved using

regenerative brakes which converts vehicles Kinetic energy into electric energy. The function of electric

locomotive involves pantograph which continuously touches the overhead line or third line running over

the bus-bar of the locomotive roof to surge arrester, which in turn is connected to transform through

cable. The output of the transformer is fed to the traction motor. the traction is connected to set of gear

trains. The motor runs using power supplied by the transformer because of which gear trains runs which

is responsible of the movement of electric locomotive. The specifications of electric drive systems used

in electric powered locomotives are: 1)Asynchronous motor: modern traction motor type using 3 phase

AC electrical systems. It can be used on both AC and DC electrical railways with suitable control

electronics. 2.) Current collected from the overhead line or from third line is returned by axle brush. 3.)

Battery: all trains are provided with a battery to provide start up current and to supply the other circuit.

4.) Relay: a device present at the oil cooling circuits of an electric locomotive to detect low oil pressure

is known as a relay. 5.) Camshaft: the DC electric traction power circuits use a camshaft to open and to

detect low oil pressure is known as a relay. 5.) Camshaft: the DC electric traction power circuits use a

camshaft to open and close the contactors to control resistance of traction motor power circuit. It is

driven by a motor or pneumatic cylinder. 6.) Circuit breaker: these are usually provided in an electric

locomotive to isolate a particular circuit in case of any fault in the circuit. 7.) Cooling fans: the modern

locomotives are provided with cooling fans in order to keep the electrical components at required

temperature. 8.) Inverter: power devices that are mounted on trains to provide AC from DC. 9.) Motor

blowers: the motors of electric locomotives get very hot after working for longer hours. Therefore, to

keep the temperature of these motors at nominal values motors are fitted with blowers. 10.) Rectifier: a

device that is used to convert an AC to DC and viceversa. 11.) Transformers: electric locomotives are

fitted with transformers which are used to step up or step down a voltage depending

on the condition required. 12.) Pantograph: the current collection systems used in

electric

locomotives the

maintain constant contact along the entire path of overhead wires are called pantograph.

What are the different methods of charging an electric... | Kia Go Electric it is only recommended in urgent cases, with caution and consultation with electricity providers.always use tchhiasr cghearsrg ues seo alunt iioccnb w (iinth c caabuleti ocnon atnrodl dbiosxc)u fsosr wmitahx iymouumr e rleeclitarbiciilittyy p arnodvi.d.. er before first use. kia trickle 5%

https://www.kia.com/ie/about-kia/experience-kia/technology/electrification/charging- methods-for-electriccars/

Integrated Starter Generator the pulse-start technology accelerates the combustion engine to the required cranking speed and only then initiates the combustion process for instant ignition.the isg reaches a peak generator output of 9 kw with an 3% efficiency of more than 80 percent across the entire speed range. https://www.autocentral.com/doc/integrated-starter-generator-

Similarity

Sources