Regenerative brake, motorgenerator unit, matlab simulink. General dimension principles for electrical braking the evaluation of braking need starts from the mechanics. Momentum is the property that keeps the vehicle moving forward once its been brought up to speed. When the driver steps on the brake pedal of an electric or hybrid vehicle, these types of brakes put the vehicles electric motor into reverse mode, causing it to run backwards, thus slowing the cars wheels. The electrical regenerating braking system came into existence and. The need to improve overall efficiency of the vehicle has led to the design of the regenerative braking system rbs.
None of the different types of brake fluids should be mixed. The design fits ideally into an 800v batterydriven hybridelectric vehicle hev or electric vehicleev traction inverter system. Train braking is a very complex process, specific to rail vehicles and of great importance by. The regenerative braking system provides the braking force during the speed of vehicles is low, and hence the traffic stop and go thus deceleration required is less in electric vehicles. Electric brake experiment of hubmotor is preliminary basis of the regeneration braking control strategy. Blending of mechanical and electrical braking is a tough issue that the engineers and researchers are putting great effort to define the best way to control braking and optimize solutions. This video has been uploaded for timcu design contest 2014 design and implementation of supercapacitor based regenerative breaking and bldc speed control for. This brakes work so effectively in driving in such environment so as to stop in cities. Most regenerative systems include on board resistors to allow also rheostatic braking if the traction supply system is not receptive, the choice being. In a conventional braking system, the energy is dissipated as heat in the braking resistors. Car with regenerative braking system toyota prius honda insight ford escape hybrid tesla roadster chevy volt fig. And it can also convert the kinetic energy into mechanical energy, which is. Layout of proposed regenerative system when brake is applied by driver, the clutch c1 disengages and c2 engages simultaneously. Pdf test platform design for regenerative braking of hub.
This contrasts with conventional braking systems, where. Regenerative braking is a unique technique that is used in evs to capture energy that the vehicle has due to its motion or, in other words, its kinetic energy that would have been wasted when the vehicle decelerates or comes to a standstill while braking. Energy efficient electric vehicle using regenerative. Pdf design of regenerative braking system for an electric vehicle. Storage of regenerative breaking energy in electrical vehicles. Figure 1 shows the regenerative braking system for. System configuration the simulation test system of vehicle regenerative braking simulates the fluid charging and discharging process of the regenerative brake accumulator in the process of energy recovery, power drive and power allocation through adjusting pressure and flow rate. By controlling which mosfets are closed during a given motor state, we can redirect current back in to the battery. Swapnil joshi, automotive design engineering student mechanical. Demand of improved vehicle performance is continuously at its peak, and inclination of consumers towards environment friendly vehicles like electric and hybrid vehicles is increasing in developed as well as in.
This advancement of technology in braking system controls the speed of the vehicle by converting some amount of the vehicles kinetic energy into another useful form of energy. Engineering department, university of petroleum and energy studies. The design of regenerative braking system with a pedal. Regenerative braking systems rbs future of braking systems 76 fig. In a regenerative braking system, the trick to getting the motor to run backwards is to use the vehicles momentum as the mechanical energy that puts the motor into reverse. They can react badly with each other and corrode the brake system. Benchmarking of regenerative braking for a fully electric car. A successfully designed braking system for a vehicle must always meet two distinct demands. In an electric vehicle, regenerative breaking helps to conserve energy by charging the battery, thus extending the driving range of the vehicle. Regenerative circuit we will design a circuit to return energy from the motor to the battery when the bicycle is braking. With regenerative brakes, on the other hand, the system that drives the vehicle does the majority of the braking. Regenerative braking system for series hybrid electric city.
The control strategy design of rbss is substantially more complex than a conventional braking system design. In electric vehicle ev with regenerative braking system, most braking energy is converted to electrical. The regenerative braking test rig consist of following components. In emergency braking, the braking system must bring the vehicle. Development of regenerative braking cooperative control system. According to the regenerative braking system rbs with a pedal emulator as well as the control strategy. This paper describes the independent switching scheme for regenerative braking. There is a number of different ways to implement regenerative braking in a bldc motor. The system allows for numerous regenerative braking systems to be installed on a single freight train in a distributed manner, which collectively function together to perform regenerative braking. Control electronics the recoverable power for which the test rig is design is selected as under.
Ppt regenerative braking powerpoint presentation free. Regenerative braking converts much of the energy to electrical energy, which may be stored. Regenerative braking is a small, yet very important, step. Enhanced regenerative braking strategies forelectric vehicles. Design and implementation of regenerative braking system. This heat energy dissipates into the air, wasting up to 30% of the cars generated power. Design a hardware test platform of power regenerative system and the scheme of software experiment.
Design principle of a flywheel regenerative braking system. Regenerative braking an overview sciencedirect topics. By design, the mobile mechanical elements o f the brake installation. Design and development of mechanical regenerative braking. Design of an antilock regenerative braking system for a. Design of regenerative braking system for an electric vehicle ev modified from used car, the second tsme international conference on mechanical engineering, krabi, 1921 october, 2011. Regenerative braking system research papers academia. A regenerative braking system for generating a regenerative torque depending on a predetermined torque command in an electric motor has a current detector, a voltage detector, a rotational speed detector, a target generated power calculating unit for calculating a target generated power from the voltage of a power supply of the electric motor, the rotational speed of the electric motor, and a. The intention behind this was to show that regenerative braking is a cost effective way to increase the range of an electric motorbike in an urban setting. And it can also convert the kinetic energy into mechanical energy, which is supplied to the vehicle whenever it is. Regenerative braking conventional braking systems use friction to counteract the forward momentum of a moving car. Improved fuel economydependent on duty cycles, power train design, control strategy, lakshmi n. Regenerative braking system can convert the kinetic energy into electrical energy with help of electric motor.
Design of electrical powertrain for chalmers formula student with focus on 4wd versus rwd and regenerative braking oskar danielsson isak jonsson erik hansson felix mannerhagen patrik molander niklas olofsson jens pettersson adam pluto gunnar sahlin c oskar danielsson, isak jonsson, erik hansson, felix mannerhagen, patrik. The 40v minimum input voltage supports the functional safety test for the regenerative braking from the traction motor. A regenerative braking test bench of hubmotor is designed in which the test and control system is developed based on labview and ni virtual. Typically, the requirement is to brake the mechanical system within a specified time, or there are subcycles in the process where the motor operates. Request pdf design and implementation of regenerative braking system during braking an automotive, all the kinetic energy is wasted in the form of energy. The fuel consumption of the conventional vehicles and regenerative braking system vehicles was evaluated over a course of various fixed urban driving schedules. Design, fabrication and testing of regenerative braking. A brake is one of the most important controls of the vehicle. Dynamic floor and crown saver system disc brake testing system disc brake burnishing system slip and cut function drawworks power management system features choice of two, three, or four ac motors with regenerative braking see specifications table on the following page. In this mechanism, the electric traction motor uses the vehicles momentum to recover energy that would otherwise be lost to the brake discs as heat. The regenerative braking system recovers the kinetic energy lost during conventional braking and stores it in the form of useful energy in the battery which can be used for further applications. The design and testing of these systems, including comparison with the original abs, will be described in the. We are designing this test rig considering the generally available vehicles like a car.
Vehicle experts have developed this field through the invention of the first mechanical antilock braking system abs system which have been designed and produced in aerospace industry in 1930 2,3. Parametric design and regenerative braking control of a. The flywheel regenerative braking system frbs concept consists of a metal flywheel design of truncated cone geometry for the energy storage system ess component and a vbelt cvt with a fixed gear for the transmission component of the rbs system. It is a simplified prototype of a hybrid vehicle which will used both abs braking as well as regenerative braking system, thereby providing us a clear idea of having a more advance type of braking. In order to help reduce fuel consumption and brake wear, a regenerative braking system was designed for the university of michigan challenge x vehicle. When the driver steps on the brake pedal of an electric or hybrid vehicle, these types of brakes put the vehicles electric motor into reverse mode, causing it.
Automotive 40v to 1kv input flyback reference design. Our team project was to design the brake pedal assembly on the challenge x chevy equinox to detect brake pedal movement to be used for regenerative braking. Regenerative braking system is the way of slowing vehicle by using the. The objective of this mqp was the design and manufacture of an electric motorbike with regenerative braking. Design and fabrication of regenerative braking system iarjset. Implementation of regenerative braking has increased the driving range by 1025%. In general one of the main objectives of regenerative braking system is to recover as much as possible kinetic energy while braking instead of being dispersed in form of heat by only friction brake.
Modification of existing regenerative braking system for. Regenerative braking refers to a system in which the kinetic energy of the vehicle is stored temporarily, as an accumulative energy, during deceleration, and is reused as kinetic energy during acceleration or running. The braking control strategy is designed considering both the safety regulations and braking energy recovery rate. In general one of the main objectives of regenerative braking system is to recover as much as possible kinetic energy while braking instead of being dispersed in. Aim at the control strategy, braking safety and braking feeling of rbs with a braking pedal emulator is confirmed via hardware in loop hil test. Rotating inertia impact on propulsion and regenerative braking for electric motor driven vehicles, blacksburg. Design of electrical powertrain for chalmers formula. View regenerative braking system research papers on academia. The rbs will be used to convert the cars mechanical energy and. As the brake pads rub against the wheels or a disc connected to the axle, excessive heat energy is also created. The solutions include various methods from optimal control to soft control 5, 6. Electric vehicle regenerative breaking system with. This wastage of energy at the time of stopping or slowing down of the vehicle can be reduced up to some extent by using regenerative braking. Regenerative brake is a revolution in the braking technology engineering, watch the entire video and learn how it works, its working principle and basics are explained.
449 1146 469 731 1105 1451 1578 624 1211 1487 54 1396 259 1067 1081 470 1249 667 639 520 72 1307 1561 1045 10 804 98 155 738 1126 1371 141 157 1463 806 1436 311