Table of Contents
What are the characteristics of an ideal traction system?
An ideal traction system should have the following characteristics: (i) It should possess high starting torque so that rapid acceleration can be achieved. (ii) It should be self-contained and compact unit.
Which of the following is the desirable characteristic of the traction motor?
The ideal characteristics of an electric motor drive for traction application in an electric and hybrid electric vehicle are high torque at low speed region for fast acceleration, hill climbing and obstacle negotiation, and low torque at high speed for normal driving.
What are major advantages of electric traction system?
Electric traction system It has many advantages over non-electric traction systems such as more clean and easy to handle, no need of coal and water, easy speed control, high efficiency, low maintenance and running costs, etc.
Which motor is more suitable for traction service?
Many single phase ac motors have been developed for traction purposes but only compensated series type commutator motor is found to be best suited for traction. Single phase induction motors have been abandoned as they are not capable of developing high starting torque.
Which type of traction is recommended for the urban suburban services?
The dc series motor is most suitable for traction services but more particularly for urban/suburban services because. (a) dc series motors are suitable for regenerative braking. (b) dc series motors are capable of withstanding rapid fluctuations in supply voltage.
What is the voltage for single-phase AC system?
The common voltage for a single-phase power starts at 230V. Also, its frequency approximates to 50Hz. Single-phase motors require extra circuits to work since a single-phase supply connecting to an AC motor doesn’t generate a rotating magnetic field.
What are the special features of traction motors?
Mechanical Features: (i) A traction motor must be robust and capable to withstand continuous vibrations since service conditions are extremely severe. (ii) The weight of the traction motor should be minimum in order to increase the payload capacity of the vehicle.
How can we make traction system efficient?
To make traction systems more energy-efficient, per-vehicle rolling stock power consumption can be significantly reduced by expanding the range of operation over which regeneration can be performed to minimize use of air brakes.
What type of DC motor is used in traction?
4.6
Motor | Application |
---|---|
DC series motor | Traction system, Cranes, air compressors |
DC shunt motor | Lathe Machines, Centrifugal Pumps, Blowers, Conveyors, Weaving Machine, Spinning machines |
DC compounded motor | Presses, Shears, Elevators, Rolling Mills |
Stepper motor | 3D printing equipment, Small robotics, CNC milling machines |
Which motor is used in DC system of traction?
Traditionally, these were series-wound brushed DC motors, usually running on approximately 600 volts. The availability of high-powered semiconductors (thyristors and the IGBT) has now made practical the use of much simpler, higher-reliability AC induction motors known as asynchronous traction motors.
Which traction system is used in India?
Indian railway traction system uses 1.5 kV DC around Bombay and 25Kv ac is used in rest of the country.