Electric motors for traction drives pdf

Electric machines high torque with high efficiency danfoss. Electric motors for vehicles, machines and marine applications. Traction drive battery charger necessary for plugin hybrids and electric vehicles bi directional boost converter steps up the battery voltage when the traction system requires a higher operating voltage than the battery can supply inverter converts direct current dc to alternating current ac for the electric motor. Ideal torquespeed profile of traction motor drive for evhev. Model based predictive control of electric drives complete guide lecture classroom notes pdf. All these drives and traction motors should satisfy the wish for efficient, lowcost and, at the same time, powerful systems. 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. Dynamics of electrical drives when the motor rotates, the load of the system may rotate or may go through a translational motion. Prior to joining tesla motors, he was an engineer at aerovironment, where he helped develop the ev1 for general motors and was featured in the documentary movie, who killed the electric car. Pdf this chapter deals with power electronics and drives used in electric vehicles ev. Hvh250, back shown with optional spun steel housing hvh250, front shown with optional spun steel housing.

A traction system causes the propulsion of vehicle in which tractive or driving force is obtained from various devices such as diesel engine drives, steam engine drives, electric motors, etc. From building technologies and automation equipment for manufacturers and construction companies to imaging and diagnostic systems for hospitals and electric motors for industrial and mobility. So, what is there to know about rareearth magnetsand how do automakers choose which kind of magnet is best for an electric cars motor. Techniques for electric drives, block diagram representation. Dc series motors are employed in electric traction whose starting torque is high.

Getting the right drive for your motor and application will payoff in reliable operations and lower energy costs. Electric motors high torque with high efficiency danfoss. Rareearth metals in magnets for electriccar motors. Motors for electric vehicles energy efficient durable compact. Pdf selection of electric motor drives for electric vehicles. By electric traction is meant locomotion in which the driving or tractive force is obtained from electric motors it is used in electric trains,tramcars,trolly buses and dieselelectric vehicles etc. Electric drives full notes, pdf, ebooks, all units. Electric locomotives require less maintenance compared to other. Electric traction motor the traction motor is suitable for a range of vehicle applications, from medium size passenger cars to light duty commercial vehicles. For traction purposes mostly 3phase induction motors and d. Everywhere dc motors are used in large applications, the use of drives are very necessary for the smooth running and operating of these motors. Pdf the increasing demand for all kinds of electrified vehicles is producing a growing diversification of electric motors in the portfolio of their.

Key words electric traction electronic commutation permanent magnet motor rail traction traction drive. Hvh250 series electric motors ev west electric vehicle. Three phase induction motors provides constant speed operation, developing low starting torque drawing high starting current and complicated control networks makes it unsuitable for electric traction work. Dynamics of electrical drives formula and explanation. The dc motor was the mainstay of electric traction drives on electric and dieselelectric locomotives, streetcarstrams and diesel electric drilling rigs for many years. 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. It consists of two parts, a rotating armature and fixed field windings surrounding the. Wally rippel is a longtime proponent of electric vehicles. Permanent magnet dc traction motor with reconfigurable winding. Traction drives have been around for a long time but have not made a major impact on the powertransmission industry.

Review of characteristics of different types of dc and ac motors used traction and their suitability moduleiv 10 hours rating and heating of electric drives, power loss, heating and cooling of motors, classes and duty and selection of motors, drives for specific application like steel, paper, textile mills. The vehicle uses a large traction battery pack to power the electric motor and must be plugged in to a charging station or wall outlet to charge. Motors for electric vehicles energy efficient durable. There are a few electric motors among others are known as workhorse in. Such as traction motor in heavy machinery or propulsion motor in marine applications. This type of drive has found considerable favour for railway work and e of locomotiv. Electricdrive wheeled vehicles can feature electric traction motors in a conventional driveline, but also offer potential for motor incorporation into the axle or the wheel hub. Pdf electric motors for light traction researchgate. Basic components of an electric drives system classroom lecture slides notes pdf. Electric traction is meant for locomotion in which the driving tractiveforce is obtained from electric motors called as traction motors. Design of electric motors, generators, and drive systems. Magnet ac motors pmac combined with a voltagematched inverter provide the speed and torque required to achieve breakthrough performance in a variety of vehicle platforms.

Electric drives an integrated approach classroom notes lecture pdf. The drive technology configurator dt configurator supports you when selecting the optimum electric motor for your application including the applicable options and the matching converter. Direct drive traction system with inverter feed induction motor 2 240 nowadays, majority of the researchers considers 1, 2,3,4 that the permanent magnet brushless motors are more efficient, more. Electric vehicle architecture, vehicle powertrain configurations, traction motors, traction drive control, motor sensorless control.

General requirement of traction motor drives wiley online library. It is used in electric trains, tramcars, trolley buses and dieselelectric vehicles etc. Our robotic motors are mobilizing nearly 1 million robot joints and robotic arms today. Alternative motor technologies for traction drives of hybrid and. Top 20 electric motor manufacturers in 2019 electric. Electric motors and drives is intended for non specialist users of electric motors and drives, filling the gap between maths and theory based academic textbooks and the more prosaic handbooks, which provide useful detail but little opportunity for the. Pdf optimisation of electric motors for traction drives. Twomotor, twoaxle traction system for full electric vehicle mdpi. Selection of electric motor drives for electric vehicles. Automatic regeneration is the main advantage in electric traction with this motor. The configurator directly transfers the data of the selected motor into the siemens industry mall shopping cart. This course focuses on the analysis and design of electric motors, generators, and drive systems, placing special emphasis on the design of machines for electric drives, including traction drives, drive motors for automated manufacturing robots, material handling and drive motors for automotive, aircraft and marine propulsion systems.

The system which uses electrical power for traction system i. Electric motors and drives in torsional vibration analysis and design timo p. The dc motor drives are used mainly for good speed regulation, frequent starting, braking and reversing. Ac traction motors, electrification systems, and railway signalling and control. Weber president and chief executive officer of remy international, inc. Allelectric vehicles evs have an electric motor instead of an internal combustion engine. Multiple drive systems per vehicle can be supported due to the safety case and levels of torque integrity employed. Electric traction alternating current electric power. Gms new electric drive module in the 2014 spark ev features a gmdesignedandmanufactured 120kw permanent magnet traction motor visible on the left side and smart use of key carryover components from volt and the twomode hybrid transmission. Power electronics and electric drives for traction. Before enlisting the practical applications of the drives used for dc motors, we will discuss about the different. It should be emphasized that traction motors are different. Desired output characteristicsc of electric motor drives in evs ev drives versus industrial drives.

Its not all about the battery, folks car nuts know precious little about the motors in electric cars, yet theyre central to innovation. Although the demand for mechanical variable speed drives has decreased over time, nidecshimpo has been able to leverage the internal traction drive power train into more modern highprecision motion control applications for oems. Direct current motors are the traction motors that have been using for a long in an electric vehicle easy speed control and speedtorque characteristics suitable for automobiles brought dc series motor to the upper edge in the list of motors used in the vehicle. They are liquidcooled and designed to work in harsh operating environments. In modern electromechanical traction drives brushless. Iav has developed a software tool that can be used for quickly finding. The traction motor is suitable for a range of vehicle applications, from medium size passenger cars to light duty commercial vehicles. Zytek have developed a high power, compact, electric drive package comprising. The speed of the load may be different from that of the motor. Traction motors in diesel locomotives ee publishers.

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. Top 20 electric motor manufacturers in the world 2019. Because it runs on electricity, the vehicle emits no exhaust from a tailpipe and does not contain the typical liquid. It involves utilization of electric power for traction systems i. The gvm is a powerful choice for both on and offroad vehicles, engineered for traction, electrohydraulic pumps ehp and auxiliary applications. Owing to the advantages associated with ac motors, ac motor drives are fast replac ing dc motor.

Industrial motors kollmorgen custom motor solutions. Some of the advantages of electric traction drives which out rule others are. In the translational motion, the position of the body changes from point to point in space. Traction systems all traction systems may be classified into two categories. Due to this ratio of weight to output kw of locomotive is reduces improvement in riding qualities and reduction in wear and tear of the track.

Lowvoltage motors and electric motors for motion control applications. Power electronics and electric drives for traction applications offers a practical approach to understanding power electronics applications in transportation systems ranging from railways to electric vehicles and ships. Following are different types of motors commonly used in electric vehicles dc machines in electric vehicles. In vehicle drives, induction machines properly designed for the application can have efficiencies. Due to high starting torque, it is possible to produce high acceleration rates. Electric traction has many advantages as compared to other nonelectrical systems of traction including steam traction.

Pdf power electronics and drives used in automotive. Electrical drives and traction veer surendra sai university. For instance, traction motor in heavy machinery or propulsion motor in marine applications. It is an applicationoriented book for the design and development of traction systems accompanied by a description of the core technology. The use of two traction drives improves the total tractive effort delivery in the whole speed range with respect to a single drive of the same total power rating. Configurations and control of traction motors for electric vehicles. Electric motors and drives in torsional vibration analysis. By electric traction is meant locomotion in which the driving or tractive force is obtained from electric motors. With the widest range of standard and custom robotic motors, drives, controls, gearing and actuation, kollmorgen will partner with you to find the optimal solution. Electric equipment can withstand large temporary overloads and can draw relatively.

The power source provides the energy to the drive system. Selection of electric motor drives for evs is a very. Danfoss editron electric drivetrains are based on synchronous reluctance assisted permanent magnet technology srpm. Hence, the electric motor drive is the core technology for electric, hybrid, and fuel cell vehicles.