Working principle of dc motor mainly depends upon fleming left hand rule. It combines some great mechanical technology, including a huge, 12cylinder, twostroke diesel engine, with some heavy duty electric motors and generators, throwing in a little bit of computer technology for good measure. The railway has its own traction current lines with an operating voltage of. The berkeleys steam engine and boilers are typical of almost the highest development of the marine reciprocating piston engine, the three cylindered tripleexpansion engine supplied with steam from the oilfired straight watertube boilers. The subcourse consists of four lessons and an examination, divided as follows. In hybrid electric vehicle the engine is the final source of the energy used to power the car. Electric locomotives do not have a conventional engine in them as. Stirling engines operate on a regenerative thermodynamic cycle where the working fluid is enclosed within the engine. If you want an explanation of how a transformer works or how an electric motor works post another question. Archived from the original pdf on november 25, 2005. If the armature winding is supplied by an external dc source, current starts flowing through the armature conductors. The magnetic field of the magnets interferes with that produced due to electric current flowing in the conductor. Rather, fuel could be located 100s of km away at an electric power station, in the form of coal or other energy sources, and delivered to the locomotive through wires.
It is just like the basic principle of dc generator. Electric vehicle and electric motor traction motor refers to a type of electric motor. The actuator is a mechanical or electromechanical device which is used to offer controlled, positioning and sometimes limited movements which are functioned manually, electrically, or by a variety of fluids like air, hydraulic, etc. The diesel and electric locomotive story and working 24. There is such a thing as an external combustion engine. The fuel coal, wood, oil, whatever in a steam engine burns outside the engine to create steam, and the steam creates motion inside the engine. Analysis, evaluation and simulation of railway dieselelectric and. Due to their lower investment costs and their simpler operation, they became the. As the conductors are carrying current inside a magnetic field, they will experience a force which tends to rotate the armature.
Calculate ithe time taken and energy dissipated in the motor during starting. The steam engine governor is a device for keeping the speed of the engine more or less constant at all loads. As told earlier, the battery used for this car is very expensive. Pressure charging can increase power 50 percent in a fourstroke engine by putting more air and more fuel into the cylinder. The technical working of an electric locomotive could be understand through the power circuit diagram of any electric locomotive for example.
Several types of diesel locomotive have been developed, differing mainly in the means by which mechanical power is conveyed to the driving wheels early internal combustion locomotives and railcars used kerosene and gasoline as their fuel. The voltage can be increased to go faster or reduced til the train stops. Improvements of efficiency in locomotives with internal combustion engines ice. Railway engineering association manual, 1911 recommends the following. Electric engines are therefore easier to maintain whereas the moving parts of a diesel engine require constant maintenance. An electric locomotive is a locomotive powered by electricity from overhead lines, a third rail or. What is the principle of electric train and how it is. In a basic dc motor, an armature is placed in between magnetic poles. Design of a stirling engine for electricity generation.
Graduates are prepared for product development positions in the automotive, communications, solar, wind turbine, and smart grid. Pdf in article analysing typical electrical locomotives were manufactured with analogous. The article presents technological solutions and properties of an electric powertrain designed for a motorcycle. As a result of this explosion, heat is released and this heat. In this case the engine operation will be at optimum operation line by controlling the engine accelerator or engine operated throttle. There are many other voltage systems used for railway electrification systems around the world, and the list of current systems for electric rail traction covers both standard voltage and nonstandard voltage systems. They are also used in electric vehicles, such as electric milk. An electric locomotive is essentially a box full of transformers and semiconductors that converts electricity collected from external sources to the desired voltage to drive the traction motors. The national stem consortium academic certificate in electric vehicle technology is built on a 30semestercredit model and includes two tracks.
Traction motors are used in electrically powered rail vehicles such as electric multiple units and electric locomotives. The siemens es64u4, is the current confirmed holder as the fastest electric locomotive at 357 kmh 222 mph in 2006. Different types of electric actuators and its applications. Allelectric vehicles evs have an electric motor instead of an internal combustion engine. Energy storage and electric generation in diesel electric locomotives conference paper pdf available july 2009 with 2,040 reads how we measure reads. Electric motors objectives after studying this unit, the student will be able to state the purpose of an electric motor. The result is a fascinating and cheap experiment that displays the basic principles of electromagnetism and engineering. The first fullscale working railway steam locomotive was built by richard. Fluid flow is modulated by changing volumes within the engine. 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. The two necessary motions are rotary and linear, where linear actuators vary the power into straight line motions, normal for positioning electrical actuator. The working principle of an alternator is very simple.
Diesel engine fundamentals doehdbk1018193 diesel engines diesel engines one of the most common prime movers is the diesel engine. For this it controls either the quantity or pressure of the steam supplied to the engine according to the load on the engine. The boiler is seated on a rectangular frame of firebricks. In response, electric locomotives began operation in 1904 on the new york central. The final decade of the 20 th century and the first decade of the 21 st century were marked by the enormous rise in high speed due to the huge leaps forward in electric locomotive technology. The hybrid diesel locomotive is an incredible display of power and ingenuity. Pdf modernization of dieselelectric locomotive 2m62 and tep. Engine four stroke cycle engine two stroke cycle engine a mixture of fuel with correct amount of air is exploded in an engine cylinder which is closed at one end. The fuel coal, wood, oil, whatever in a steam engine burns outside the engine to create steam. The valves are mounted either on the cylinder head or on the cylinder block. The permissible range of voltages allowed for the standardised voltages is as stated in standards bs en 50163 and iec 60850.
Rudolf diesel patented his first compressionignition. Acs diagram of acdc dieselelectric locomotive tep70 traction generator, when controlled. In both states, the use of electric locomotives on principal interurban routes. A steam engine in oldfashioned trains and steam boats is the best example of an external combustion engine. Electric locomotives do not have a conventional engine in them as we have seen in a diesel locomotive, but use the electricity. Because it runs on electricity, the vehicle emits no exhaust from a tailpipe and does not contain the typical liquid fuel.
The direction of the lines of force is given by the law of the screwdriver. Identify all main components of a diesel engine starting system 2. Electric motor parts of motor, working of electric motor. The working principle of the diesel power station is very simple. Describe the similarities and differences between air, hydraulic, and electric starting systems 3. Introduction to basic notions on electric power 5 electric current conductor lines of force fig. A locomotive or engine is a rail transport vehicle that provides the motive power for a train. Before gaining an understanding of how the engine operates a basic understanding of the engines components must be gained. The train picks up the electricity through the wheels and takes it to an electric motor that turns the drive wheels with a set of gears. Advantages of electric locomotive electric engines do not produce much heat and noise.
A 2200v,50 hz, three phase,6 pole,yb connected squirrel cage induction motor has following parameters. We at mth electric trains take pride in manufacturing quality products like your set, and we hope that you will enjoy it for a long time. Be it diesel or electric, locomotives are actually run by a set of electric ac. A gasolineelectric hybrid car or hybrid electric vehicle is a vehicle which relies not only on batteries but also on an internal combustion engine which drives a generator to provide the electricity and may also drive a wheel.
Electric train experiment purpose to build an electric train, utilizing uninsulated copper wire, a battery, and powerful magnets. With independent airbrakes air goes from the locomotive to all cars in the train making the system slower than one with automatic airbrakes. It also depends upon faradays law of electromagnetic induction which says the current is induced in the conductor inside a magnetic field when there is a relative motion between that conductor and the magnetic field. Locomotives popularly called train engines are the heart and soul of the railway system. An electric locomotive is a railway vehicle that can move along rails and push or pull a train attached to it using electric power drawn from an external source, usually from overhead cables or a third rail. However, thermal engines in a vehicle as main energy and. Since the loop has become a magnet, one side of it will be attracted to the north pole of the magnet and the other to the south pole. To allow the air to enter into the cylinder or the exhaust, gases to escape from the cylinder, valves are provided, known as inlet and exhaust valves respectively. An electric locomotive is a locomotive powered by electricity from overhead lines, a third rail or onboard energy storage such as a. Generally, an ebook can be downloaded in five minutes or less. It started first with directcurrent feeding systems ca pable of driving a dc motor directly and. In comparison to the principal alternative, the diesel engine, electric railways. The two pistons of the engine are exposed to a hot source and cold source, respectively.
The moscow odessa train in vinnytsia railway station. A diesel locomotive is a type of railway locomotive in which the prime mover is a diesel engine. 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. This experiment is guided towards stem education and. Locomotives work based on a really simple principle. A traction motor is used to make rotation torque on a machine. Power 4mw at wheel fore electric mode, 4,200 hp diesel engine power 2 high speed diesel engines technology.
Single phase 25 kv is stepped down and converted in to dc, then this dc supply is used to run dc traction motors equipped in conventional locos. The valves are operated by the action of the camshaft, which has separate cams for the inlet. As we all know, it is electric locomoti ves that are at the forefr ont of railway traction, while the diesel locomotive is kept for some very specific uses. Design considerations of powertrain as well as inverter and battery pack with bms.