Traction motor driver pdf

The objective of this research is to design a traction control system to enhance the traction of an electric rearwheel driven formula student vehicle with one central motor as in figure 1. Chevrolet bolt ev traction motor deep dive youtube. Small disturbances occur when train crosses the section insulators and cross over. In return, the energy from the wheels turns the motor, which functions as a generator, converting energy normally wasted during coasting and braking into electricity, which is stored in a battery until needed by the electric motor.

That dedication shows in customer preference for baldorreliance motors. Differences between traction motors and industrial motors are discussed. Serieswound dc motors have the disadvantage that, if wheelslip occurs in a standard dc drive, there is the tendency for the traction motor to speed up and run away, even to the point of mechanical failure if the power is not reduced quickly. Ac77 ac torque motor features mechanically compatible with the d77 motor, the a77 fits in same pedestal position in the locomotive truck bogie. This paper presents an implementation of a wireless internet of things iot system applied to the traction motor drive condition monitoring in electric vehicles evs.

The highpowered semiconductors are available, and usage of uncomplicated, highly reliable ac induction motors known as asynchronous traction. In deep and trustful partnerships with vehicle builders, refurbishers, and rail operators, we supply stateoftheart traction. With that in mind, toshiba developed the totallyenclosed traction motor with an efficiency rating of 94%. General requirement of traction motor drives request pdf. Series commutator motor, therefore it requires regular maintenance. Three phase induction motor as traction motor railelectrica. Traction motors in diesel locomotives ee publishers. Electric propulsion controls and accessories a 77 a torque. Front and rear motor drives are supplied by two different battery packs. The operational performance of traction motors directly affects the efficiency and dependability of services provided by rail transportation and mass transit industries. This presentation does not contain any proprietary, confidential, or otherwise restricted information 20 u. The traction motor is suitable for a range of vehicle applications, from medium size passenger cars to light duty commercial vehicles. The motor can be clearly seen behind the axle with the gear box with the writing on it in the center.

Motor generator kers control unit boost request energy to be released driver breaking system energy to be recovered energy recovery energy release energy storage dcdc. How to start and control the speed of traction motors. Traction motor simple english wikipedia, the free encyclopedia. Builtin encoder driver software corresponding range traction drive ac servomotor for traction frame capacity w type wheel diameter mm drive outer dia mm reduction. Twomotor, twoaxle traction system for full electric vehicle mdpi. This work refers to the two motor twoaxle configuration for a compact car, shown in figure1. L6235 three phase brushless dc motor driver modern motion control applications need more flexibility that can be addressed only with specialized ics products.

The traction motor is a four pole dc series motor in which field winding is connected in series with armature. A traction motor is an electric motor used for propulsion of a vehicle, such as locomotives, electric or hydrogen vehicles, elevators or electric multiple unit traction motors are used in electrically powered rail vehicles electric multiple units and other electric vehicles including electric milk floats, elevators, roller coasters, conveyors, and trolleybuses, as well as vehicles with. Dec 17, 2018 join us for a deep dive into the incredible chevrolet bolt ev traction motor part of the 1et25 drive unit. Single twochannel driver compact design with water cooling rack type arrangements new converter designs. Range, blended w fastbrake cooling system 3 x 48 ac powered cooling fans hep inverter hep, igbt hep power 600 kw, 480 vac driver s controls console desk w. Traction motor for lowfloor vehicles integrated traction motor design for low floor vehicles traction motor application principles 5 especially for multiple units and mass transit vehicles, traction motors are used that are connected to the gearbox via a cardan shaft. Massachusetts institute of technology 1 introduction this is a concept paper in response to the foa. The only constraints reshaping the dynamics of the market include the operational glitches of traction motors. Permanent magnet dc traction motor with reconfigurable winding control idea program final report for the period june, 2003 through september, 2006 contract number hsr44 prepared for the idea program transportation research board national research council nicholas n. One of the major application of an electric drive is to transport men and materials from one place to another.

The traction motors provide propulsion power to the wheels. Permanent magnet dc traction motor with reconfigurable winding. A number of manufacturers use pm motors in their locomotives. Before the mid20th century, a single large motor was often used to drive multiple wheels through connecting rods. Development of the calculation method of the traction motor power.

Pdf iotbased traction motor drive condition monitoring in. General requirement of traction motor drives wiley online library. This was the same way that steam locomotives would turn their drive wheels. Each motor drives a small gear, which meshes with a larger gear on the axle shaft. This system included the new development of a highspeed traction drive motor achieving. General aspects of railway traction what really causes the train to accelerate or br ake are the adhesion forces that appear in the wheelrail contact. This could only be possible with the introduction of variable voltage variable frequency control. It is now standard practice to provide one traction motor driving each axle through a gear drive. The railway system division, in its commitment to future progress, has consistently achieved technological breakthroughs on three systems that are shaping the future worldwide. Massachusetts institute of technology 1 introduction this is a concept paper in response to the foa entitled rare earth alternatives in critical technologies. Traction systems for locomotives and high speed applications.

Highly efficient bldc motor integrated with traction drive. Ac induction motors known as asynchronous traction motors. Ac traction, the power of hsp46 110 mph top speed, hhspsp 4466. Pdf directdrive induction motor for railway traction applications. Builtin encoder driver software corresponding range traction drive ac servomotor for traction. A traction motor is operated at frequency f 0,slip s 0 and delivering torque. Brushless dc motor design for electric traction system md. The electric traction motor is mainly used in railways, trams, metros, ev, elevator, and conveyor among others, driving the demand for electric traction motor. Pdf this paper deals with a new technical design for a trambogie with direct drive system on the axle with an induction motor.

The preliminary choice of electric traction motors for a helicopter traction drive technical report pdf available march 2015 with 1,537 reads how we measure reads. Fag traction motor bearings and ina plain spherical. The drive which uses the electric power for moving forward, such type of drive is called an electric traction drive. Dc motors are used in a serieswound configuration and speed is controlled by switching series resistance in and out of the circuit. Power circuit of traction motor,during series parallel. Several positions are available for air intake or power. Twomotor, twoaxle traction system for full electric vehicle.

It is a forced ventilated machine arranged for axle mounting on sleeve bearing. Now, the normal practice is to use one traction motor to drive each axle through a gear drive. My original aim was to bridge the gap between specialist textbooks which are pitched at a level too academic for the average user and the more prosaic handbooks, which are full of useful detail but provide. The project was initiated in 2007, not only to create a traction motor with universal appeal to train builders, but also to enable effective engineering, supply and production processes, and to maintain abbs lead as an independent supplier of traction motors. The overheating of traction motors is one of the major restraints hampering the growth of the global market. Comparison of features of different acac traction system make. A lowinductance dc bus capacitor for high power traction motor drive inverters jihsheng lai and heath kouns virginia polytechnic institute and state university 668 whittemore hall blacksburg, va 240610111 joseph bond electronic concepts, inc. The information contained herein is intended to assist oems, dealers and users of electric vehicles. Selection of suspension arrangement of traction motors. Pdf the preliminary choice of electric traction motors. This torque must be generated in a motor or braking system that. The l6235 is a fully integrated motor driver ic specifically developed to drive a wide range of bldc motors with hall effect sensors. Traction motor traction motors 4 x 100 kw nominal operating point max.

Traction drives have been around for a long time but have not made a major impact on the powertransmission industry. It is based on freescales 56f800e microcontrollers. Multiple drive systems per vehicle can be supported due to the safety case and levels of torque integrity employed. Benchmarking stateoftheart technologies tim burress oak ridge national laboratory. The control equipment is provided for manual and automatic operation. This provides the gear reduction that allows the motor to drive the train at speeds of up to 110 mph. A traction motor is an electric motor used for propulsion of a vehicle, such as locomotives or electric roadway vehicle traction motors are used in electrically powered rail vehicles electric multiple units and other electric vehicles including electric milk floats, elevators, roller coasters, conveyors, and trolleybuses, as well as vehicles with electrical transmission systems diesel. Traction pivot traction motors geb15, ac w individual axle control air compressor wabco cmcblat3 cyl, air cooled. Brushless dc motor design for electric traction system. A lowinductance dc bus capacitor for high power traction. Features, loss, the module is suitable for a variety of medium voltage applications in motor drives and power, motor control. The empty car weight is approximately 245 kg and the motor is able to produce 85 kw which results in 1200 nm on the rear axle.

Transverse movement is limited by the flanges of axle suspension bearing. In this article we will discuss about how to start and control the speed of traction motors. Only series and compound dc motors are suitable for traction work. May 12, 20 limits are set on the torque speed characteristics of series motor as t max and s max as per the design parameter. For these adhesion forces to appear, tractive or braking effort needs to be applied to the wheels.

Traction motors are specifically built and used for vehicular propulsion, particularly electric and diesel train locomotives and underground subways, metros, whatever theyre called where you see them. When called upon to brake, the frequency applied to the stator is lowered below the mechanical speed, and what happens is explained as follows. May 12, 20 an induction motor works as a generator if mechanical speed is more than the synchronous speed. The control of traction motors for starting and for smooth acceleration is very much essential to avoid damage to the motors. With the advantages of high efficiency and high torque density, permanentmagnet synchronous motor drive systems are widely adopted in many. This is steering the demand for more enhanced and fuelefficient traction motors in the global market. Traction control of an electric formula student racing car. A key factor in the use of a motor drive in this application is the ability to operate with coolant temperatures as high as 105c. Watch the drive unit disassembly and learn about the internal parts. This chapter presents the general requirement of traction motor drives. This solution, using twoelectric motors an d two reduction differential gearboxes, drives all the four wheels of the vehicle.

Other websites deconstructing a traction motor associated rewinds ireland limited image of a nose mounted traction motor on an r46 new york city subway car. Railway traction motors are serieswound brushed dc motors that operate on nearly 600 volts. Lal,senior executive director standards ganesh, director standards electrical directorate research design and standards organisation, lucknow abstract motor suspension arrangement is of paramount importance for the reliability of traction motors. Abb holds a complete and flexible traction motor and generator portfolio that allows us to build the perfect solution for train operators regardless of train type, power range or geographical location.

Traction motor drive regenerative breaking aa119 july 16, 2009 leos chalupa, ph. In traction motors, the bearing size is determined exactly as in the case of the standard motor with the aid of the normal fatigue life calculation method. The electric motor applies resistance to the drivetrain causing the wheels to slow down. Usually a master controller is used for the purpose. Study of excitation characteristics of traction machinedrive. Abb is the expert for traction converters, motors, transformers, and complete traction chain solutions. Traction motors market global industry analysis, size and. Curve control is not available traction and yaw control similar to advancetrac but does not include information from vehicle roll rate sensors. With the advantages of high efficiency and high torque density, permanent magnet synchronous motor drive systems are widely adopted in many. Traction motors are used in electrically powered rail vehicles such as electric. Permanent magnet dc traction motor with reconfigurable.

The rating life of the bearings in a traction motor. So, motor should be such that regenerative braking can be easily used in it. Development of traction drive motors for the toyota hybrid. Summary electric drive pdf, 2,54 mb battery system jpg, 6,85 kb battery management system jpg, 721,72 kb power electronics jpg, 610,98 kb for powertrain systems and electrified mobility the electrification of the powertrain paves the road for locally emissionfree and fascinating mobility combined with great driving enjoyment. The board is designed to drive motors in the 1kw range and can handle currents up to 30a. Electric vehicle architecture, vehicle powertrain configurations, traction motors, traction drive control, motor sensorless control. With a dc series motor, the current and torque produced at standstill may be reduced by strengthening the. Oct 30, 2016 a traction motor is used to make rotation torque on a machine. As is normal in the sector, this is indicated not in hours but in kilometres travelled. Traction motor other products toshiba international. Traction motors are the key components of complex propulsion systems that drive freight locomotives and passenger transit vehicles.

Challenges of modern ac motor traction drives prof. Therefore, the growing adoption of emobility and rising concern over deterioration of environment is projected to boost the electric traction motor market. Toshibas innovative permanent magnet synchronous motor technology relies on reluctance torque and realizes an exceptional efficiency rate of 97%. Due to its totallyenclosed design, the motor remains clean throughout extended operation. For nearly a century, baldor has strived to provide customers with the best value and reliability in industrial electric motors. Efficiency is as important in drive systems for hybrid electric vehicle drive motors as it is for industrial motors in manufacturing facilities and commercial buildings. Introduction this application note describes the design of a 3phase ac induction motor drive with volts per hertz control in closedloop vhz cl. The tida00281 ti design is a 3phase brushless dc motor drive designed to operate in 48v automotive applications. Development of traction drive motors for the toyota hybrid system munehiro kamiya toyota motor corporation developed in 2005 a new hybrid system for a large suv. What is the difference between a traction motor and an. Every train needs a unique motor or generator for its purpose. Railway transportation systems for a comfortable future. High temperature silicon carbide sic traction motor drive.

Small disturbance in supply traction motor should handle small disturbance in supply. A traction motor is used to make rotation torque on a machine. Ddtm is a quiet, compact, lightweight system designed for 12m buses in europe, paratransit buses, and 3035 buses in north america. Included in multiple ul recognized insulation systems. This simplifies vehicle coolant loops and minimizes any necessary auxiliary systems. There are three main reasons for having more than one traction motor. In early applications, resistance was controlled manually by the driver, but relay systems were later installed to do this. Separately excited sx transistorized traction motor control and series pump motor control installation and operation manual ic3645sr4w606n6, ic3645sr7w455n8, ic3645sp4u450n10 and ic3645sp7u350n9 note. Electric motors and drives fundamentals, types and applications third edition austin hughes senior fellow, school of electronic and electrical engineering, university of leeds amsterdam boston heidelberg london new york oxford paris san diego san francisco singapore sydney tokyo newnes is an imprint of. The main obstacle to their increased use has been a lack of confidence in the. A traction motor is an electric motor used for propulsion of a vehicle, such as locomotives. Power circuit of locomotive, traction motor operation and sequence of series parallel and series parallel with shunt operation, showed with animated video. T max is fixed on the basis of short term thermal rating of the motor and adhesion available where s max depends on the mechanical design and the services the locomotive has to perform.