This document summarizes a seminar presentation on the design and analysis of a regenerative braking system. The presentation identifies the problem of reducing vehicle emissions and increasing fuel efficiency. It reviews literature showing that braking wastes 21-24% of energy and regenerative braking can recover 30-66% of that wasted energy. The objectives are to study regenerative braking system design, analyze its costs and efficiency, and test a prototype. Forces on vehicles during driving and braking are analyzed, and a Toyota Camry is modeled in Simulink. Calculations show potential to improve fuel economy by 7% through regenerative braking recovering 30% of braking energy.
regenerative breaking is energy conversion method .by using conventional braking more energy is lossed in the form of heat by using this we can convert this energy into usefull forms
Regenerative Braking System
Regenerative braking is a way of taking the wasted energy from the process of slowing down a car and using it to recharge the car's batteries.
Introduction
Literature Review
Recent Research And
Development In Hess
Case Study
Regenerative Braking System In
Bus
Regenerative Braking
System In Railways
Conclusion
Future Scope
References
A COMPARATIVE STUDY AND ANALYSIS OF THE PERFORMANCE OF VARIOUS REGENERATIVE B...IAEME Publication
Regenerative Braking System (RBS) converts a part of the vehicle’s kinetic energy into a useful form of energy. Thus the fuel requirements and the level of pollutant sexhausted by thevehicle are reduced,and canbecontrolled.VariousRegenerativeBrakingSystems include Mechanical Flywheel RBS, Elastomeric Flywheel RBS,
Hydraulic Power-Assist RBS, Ultra capacitor RBS, etc. In this paper, a typicalmathematical analysis of the performance of Mechanicalflywheel RBS, ElastomericFlywheel RBS, and Hydraulic Power-Assist RBS has been studied on different carmodels based on current research, and a comparison of the efficiencies and fuelsavings by these systems has been done taking into consideration, a basic Volvo car
model. Analysis shows the efficiencies of Elastomeric Flywheel RBS, HydraulicPower-Assist RBS, and Mechanical Flywheel RBS will be in adescending order
regenerative breaking is energy conversion method .by using conventional braking more energy is lossed in the form of heat by using this we can convert this energy into usefull forms
Regenerative Braking System
Regenerative braking is a way of taking the wasted energy from the process of slowing down a car and using it to recharge the car's batteries.
Introduction
Literature Review
Recent Research And
Development In Hess
Case Study
Regenerative Braking System In
Bus
Regenerative Braking
System In Railways
Conclusion
Future Scope
References
A COMPARATIVE STUDY AND ANALYSIS OF THE PERFORMANCE OF VARIOUS REGENERATIVE B...IAEME Publication
Regenerative Braking System (RBS) converts a part of the vehicle’s kinetic energy into a useful form of energy. Thus the fuel requirements and the level of pollutant sexhausted by thevehicle are reduced,and canbecontrolled.VariousRegenerativeBrakingSystems include Mechanical Flywheel RBS, Elastomeric Flywheel RBS,
Hydraulic Power-Assist RBS, Ultra capacitor RBS, etc. In this paper, a typicalmathematical analysis of the performance of Mechanicalflywheel RBS, ElastomericFlywheel RBS, and Hydraulic Power-Assist RBS has been studied on different carmodels based on current research, and a comparison of the efficiencies and fuelsavings by these systems has been done taking into consideration, a basic Volvo car
model. Analysis shows the efficiencies of Elastomeric Flywheel RBS, HydraulicPower-Assist RBS, and Mechanical Flywheel RBS will be in adescending order
in this ppt given information is Regenerative braking technology funnels the energy created by the braking process back into the system in the form of charging the battery for further use
In a regenerative braking system the energy normally lost in the braking process is transferred to the generator from the rotating axel and then transferred to the battery, thus saving energy
Give suggestion in comment
In this paper, the regenerative braking system (RBS) is implemented in the hybrid vehicle which is made to run using internal combustion engine and batteries. A regenerative brake is an apparatus, a device or a system which allows the vehicle to recapture and store some part of the kinetic energy that would be 'lost' as heat during applying brake. The total amount of energy lost in this way depends on how many times, how hard and for how long the brakes are applied. Energy lost during braking in this hybrid vehicle is used to recharge the battery. Since regenerative braking results in an additional increase in energy output for a given energy input to a vehicle, the efficiency is improved. It is used to improve the overall efficiency of the vehicle by 25% using RBS. The dynamo is fixed on the rear wheel of the vehicle which is beneficial in two ways, one that it helps to covert the kinetic energy into electrical energy and other that it controls the friction produced inside the wheel which in turn increases the life time of brake pads. Fixed at clearance angle using weld it shifts from wheel hub to wheel rim while application of brake giving more effectiveness to the vehicle.
A ppt about the topic REGENERATIVE BRAKING. It can be used for the presentation as well as it is a project topic. For more details, contact me. (Font may vary during uploading. Do correct it.)
Regenerative braking system is a small, but an eventual method for converting unwanted heat energy into electrical energy. The energy generated is stored in the battery. This helps in reducing the usage of the external battery for charging purposes. These types of brakes helps in increasing the driving range for the electric vehicles as they can travel for longer periods. Regenerative braking system also in improving the fuel economy. It is a way of increasing the efficiency rate of the vehicles. Instead, of converting the kinhetic energy into thermal energy through friction braking this system can convert a good fraction of kinetic energy into electric energy and charge the battey using the principle of alternator. Mr. Shivam Sharma | Ashish Narayan Singh | Rahul Yadav | Abhinav Jha | Kumar Vanshaj | Md. Fahim ""Regenerative Braking System"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-4 , June 2019, URL: https://www.ijtsrd.com/papers/ijtsrd23546.pdf
Paper URL: https://www.ijtsrd.com/engineering/mechanical-engineering/23546/regenerative-braking-system/mr-shivam-sharma
These slides use concepts from my (Jeff Funk) course entitled analyzing hi-tech opportunities to analyze how the economic feasibility of kinetic energy recovery systems is slowly becoming better through improvements in batteries, hydraulic pumps, and flywheels. Many of these systems are currently used in Formula 1 race cars because they enable these cars to achieve higher acceleration and longer times between pit stops. For consumers, flywheels may become the energy storage technology of choice for vehicles particularly as improvements in carbon nanotubes and graphene occur.
The rates of improvement for energy and power storage densities for batteries have been very slow and those of flywheels have been much faster. One of the reasons for the rapid improvements in the densities for flywheels is that improvements in the strength per weight of materials have enabled faster rotations and the storage densities are a function of rotation velocities squared. As shown in the slides, carbon fiber has about four times the strength to weight ratio and seven times the energy density of glass. Since carbon nanotubes have strength to weight ratios 15 times higher and graphene has ones 30 times higher than do carbon fiber, energy storage densities of 120,000 kJ/kg or 33.6 kWh are possible with graphene. This energy density is about 100 times higher than is currently available from lithium-ion batteries.
Regenerative braking is an energy recovery mechanism that slows down a moving vehicle or object by converting its kinetic energy into a form that can be either used immediately or stored until needed. In this mechanism, when we apply the brake, this system slow down the vehicle and the speed of wheels are in form of rotational energy that is mechanical energy, which transfer to generator where the mechanical energy is converted
into electrical energy and eventually which is stored in the battery.
Conventional Braking System
Introduction OfRegenerative Braking System
Necessity Of The System
Elements Of Regenerative Braking System
Different Types Of Regenerative Braking System
Advantages And Disadvantages
Research Papers
Conclusion
Future Scope
References
in this ppt given information is Regenerative braking technology funnels the energy created by the braking process back into the system in the form of charging the battery for further use
In a regenerative braking system the energy normally lost in the braking process is transferred to the generator from the rotating axel and then transferred to the battery, thus saving energy
Give suggestion in comment
In this paper, the regenerative braking system (RBS) is implemented in the hybrid vehicle which is made to run using internal combustion engine and batteries. A regenerative brake is an apparatus, a device or a system which allows the vehicle to recapture and store some part of the kinetic energy that would be 'lost' as heat during applying brake. The total amount of energy lost in this way depends on how many times, how hard and for how long the brakes are applied. Energy lost during braking in this hybrid vehicle is used to recharge the battery. Since regenerative braking results in an additional increase in energy output for a given energy input to a vehicle, the efficiency is improved. It is used to improve the overall efficiency of the vehicle by 25% using RBS. The dynamo is fixed on the rear wheel of the vehicle which is beneficial in two ways, one that it helps to covert the kinetic energy into electrical energy and other that it controls the friction produced inside the wheel which in turn increases the life time of brake pads. Fixed at clearance angle using weld it shifts from wheel hub to wheel rim while application of brake giving more effectiveness to the vehicle.
A ppt about the topic REGENERATIVE BRAKING. It can be used for the presentation as well as it is a project topic. For more details, contact me. (Font may vary during uploading. Do correct it.)
Regenerative braking system is a small, but an eventual method for converting unwanted heat energy into electrical energy. The energy generated is stored in the battery. This helps in reducing the usage of the external battery for charging purposes. These types of brakes helps in increasing the driving range for the electric vehicles as they can travel for longer periods. Regenerative braking system also in improving the fuel economy. It is a way of increasing the efficiency rate of the vehicles. Instead, of converting the kinhetic energy into thermal energy through friction braking this system can convert a good fraction of kinetic energy into electric energy and charge the battey using the principle of alternator. Mr. Shivam Sharma | Ashish Narayan Singh | Rahul Yadav | Abhinav Jha | Kumar Vanshaj | Md. Fahim ""Regenerative Braking System"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-4 , June 2019, URL: https://www.ijtsrd.com/papers/ijtsrd23546.pdf
Paper URL: https://www.ijtsrd.com/engineering/mechanical-engineering/23546/regenerative-braking-system/mr-shivam-sharma
These slides use concepts from my (Jeff Funk) course entitled analyzing hi-tech opportunities to analyze how the economic feasibility of kinetic energy recovery systems is slowly becoming better through improvements in batteries, hydraulic pumps, and flywheels. Many of these systems are currently used in Formula 1 race cars because they enable these cars to achieve higher acceleration and longer times between pit stops. For consumers, flywheels may become the energy storage technology of choice for vehicles particularly as improvements in carbon nanotubes and graphene occur.
The rates of improvement for energy and power storage densities for batteries have been very slow and those of flywheels have been much faster. One of the reasons for the rapid improvements in the densities for flywheels is that improvements in the strength per weight of materials have enabled faster rotations and the storage densities are a function of rotation velocities squared. As shown in the slides, carbon fiber has about four times the strength to weight ratio and seven times the energy density of glass. Since carbon nanotubes have strength to weight ratios 15 times higher and graphene has ones 30 times higher than do carbon fiber, energy storage densities of 120,000 kJ/kg or 33.6 kWh are possible with graphene. This energy density is about 100 times higher than is currently available from lithium-ion batteries.
Regenerative braking is an energy recovery mechanism that slows down a moving vehicle or object by converting its kinetic energy into a form that can be either used immediately or stored until needed. In this mechanism, when we apply the brake, this system slow down the vehicle and the speed of wheels are in form of rotational energy that is mechanical energy, which transfer to generator where the mechanical energy is converted
into electrical energy and eventually which is stored in the battery.
Conventional Braking System
Introduction OfRegenerative Braking System
Necessity Of The System
Elements Of Regenerative Braking System
Different Types Of Regenerative Braking System
Advantages And Disadvantages
Research Papers
Conclusion
Future Scope
References
Fuel enhancement of parallel hybrid electric two-wheeler motorcycle IJECEIAES
In this paper, design and simulation of a parallel hybrid electric twowheeler motorcycle (PHETM) by means of continuous variable transmission (CVT) is illustrated. For simulation, the parallel hybrid electric power train model type in MATLAB/ADVISOR is customized. The internal combustion engine (ICE) be supposed to drive at elevated efficiency areas, in order to attain enhanced fuel economy and a reduced amount of emission. Simultaneously, the ICE must not activate at values of low torque areas. For that reason, get better it whilst ICE is ON, a new energy control strategy is proposed. In the new strategy, the electrical machine absorbs the extra torque of the ICE. This article proposes a PHETM system to propel the vehicle efficiently with reduced amounts of emission on comparing witha conventional vehicle. This system includes two modes of operations for achieving the better results known as motoring mode and generating mode. The switching from one mode to other is based on the vehicle speed which is sensed in real time. A drive cycle is generated by running the vehicle in normal and slightly gradient condition and finally the results are compared.
The objective of this applied research is to compare the values of the different exergoeconomic variables of the Open Cycle Gas Turbine (OCGT) calculated during summer atmospheric conditions to the values obtained from the simulation of the plant using design conditions.
Drivemode Next Generation Electric Drivetrains for Fully Electric Vehicles Leonardo ENERGY
Presentation of the final event for the three GV04 projects: ReFreeDrive, ModulED and Drivemode. Recordings available at https://www.youtube.com/playlist?list=PLUFRNkTrB5O-38psbMgeWAvzXQ5QWzNsk.
Integrated Modular Distributed Drivetrain for Electric & Hybrid Vehicles
International Journal of Engineering and Science Invention (IJESI)inventionjournals
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
IRJET- Optimization of Required Power for an Electric Vehicle
Presentation
1. A SEMINAR ON
DESIGN & ANALYSIS OF
REGENERATIVE BRAKING SYSTEM
UNDER THE GUIDANCE OF
PROF. NILESH SHINDE
Presented by
SHIVDATTA REDEKAR
NITIN SARGAR
SOHAIL SHAIKH
BHARAT WAGH
1
2. Identification of problem
Challenges across world on Climate change & Reducing
Carbon Emission
Automotive industry's challenges- facing strict emission
norms
The price increase of petroleum based fuel
Various research and development efforts for energy
conservation & sustainable development methods
2
3. Literature study
• One third (21 to 24%) energy is
consumed during brake.
• Research by Volkswagen has
shown that a hybrid drive with
both ECE and ICE offers fuel
saving of over 20% compared
purely electric.
• A vehicle operated in the main
city for such vehicles the wastage
of energy by application of brake
is about 60% to 65%.
Fig. shows energy utilization at wheels
for heavy loaded truck and bus
3
4. Fig. shows energy dissipation
on wheels during braking
Fig. shows the total braking force, regenerative
braking force and braking force on front wheels
ENERGY DISSIPATION IN RBS 4
5. FINDINGS IN LITERATURE STUDY
The average efficiency of energy recovery of the system was 66%. (HER)
Regarding to the energy recovering potential of the system, simulation results
indicated that 32 to 66% of braking energy can be recuperated.
The variation is due to the losses of load variation.
High potential of energy recovery and it is worth to apply for commercial
vehicle.
(COURTESY: Journal of Science and Engineering Technology, Vol. 7, No.4, 2011)
5
6. objectives
To study the basic design of RBS
To identify obstacles occurred while implementing RBS
To analyze RBS in terms of cost effectiveness, feasibility, efficiency
To carry out simulation in suitable software.
To validate analyzed result on proposed model by carry out testing
To evaluate an efficient system for future study.
6
7. Analysis of Forces acting on vehicles
The amount of mechanical energy consumed by a vehicle when driving a pre-
specified driving pattern mainly depends on three effects:
the aerodynamic friction losses
the rolling friction losses
the energy dissipated in the brakes.
The elementary equation that describes the longitudinal dynamics of a road
vehicle has the following form
M(dv(t)/dt)= Ft(t) − (Fa(t) + Fr(t) + Fg(t))
The traction force Ft is the force generated by the prime mover minus the force
that is used to accelerate the rotating parts inside the vehicle and minus all friction
losses in the powertrain
7
8. Aerodynamic friction losses
Usually, the aerodynamic resistance force Fa is
approximated by simplifying the vehicle to be a prismatic
body with a frontal area Af .
Fa(v) = ½.q.Af.Cd.v
Figure : Schematic representation of the
forces acting on a vehicle in motion
8
9. Rolling friction losses
• The rolling friction is modeled as
Fr = Cr.m.g.cos(a)
rolling friction coefficient Cr depends vehicle speed v, tire pressure p, and road surface
conditions.
Uphill driving force
The force induced by gravity when driving on a non-horizontal road is conservative and
considerably influences the vehicle behavior. In this text this force will be modeled by the
relationship
Fg = m.g.sin(a)
9
10. Analysis on vehicle
2001 Toyota Camry Specifications
city mileage4: 0.103 Liter/km
empty mass5: 1420 kg
CD6: 0.29
Frontal Area: 2.42 m2
Coefficient of Rolling Resistance: 0.015
10
12. Fuel Consumption due to Rolling Resistance
Let's assume the car is carrying one passenger (70 kg) and a full tank
of gas (40 kg).
Force of rolling resitance=(Coff of rolling resitance)(mass)(g)
=(0.015)(1420+70+30)(9.81)
=223N
Work done against the rolling resistance=(force of rolling resistance)(distance)
=223*1000
=223KJ
Energy per liter= amt of joules/amt of lits
Amt of lits = amt of joules/energy per lit
= 892/32
= 0.028L
Work done against air resitance=1/2*p*Acar *Cdv
=1/2 (1.3*2.42*0.29*1000*14)
=89.4KJ
12
13. Efficiency=work output/fuel energy input
Fuel energy input=Work output/Efficiency
=89.4/25%
=357.6KJ
Energy per liter=amt of joules/amt of lits
Amt of lits=amt of joules/energy per lit
=357.4/32
=0.011L
Consumption due repeated acceleration
= total camry fuel consumption-fuel
consumed by rolling resistance –fuel
consumed by air drag
=0.103-0.028-0.01
=0.064 L/KM
This tells us that repeated acceleration is responsible for about 0.064 / 0.103 = 62% of the
city fuel economy.
For regenerative braking system, we could recover 70% of this energy, thereby saving
(70%) (62%) = 43% of the total city fuel economy!
13
15. Result
Development of drive cycle for vehicle in Simulink
Potential of recovering 30% of energy (from calculations)
Improved fuel economy by 7%
15