Field winding the winding which carries only the field current required to. A turbo generator set or turbine generator set is the compound of a steam turbine or gas turbine. Rotor earth fault protection of alternator or generator. Thermographical analysis of turbogenerator rotor sciencedirect. Large steam powered turbo generators steam turbine generators provide the majority of the worlds electricity and are also used by steam powered turbo electric ships. Manufacturing of turbo generators seminar reportpdf ppt download abstract. The steam turbogenerator machine stg figure 1 was installed in 1983 as part of the unit b1 339 mw in tpp kosovo b and is one of the most important machines for generating electricity. The effects of high vibration on the steam turbogenerator. Aug 12, 2015 turbo generator synchronous generator definition. Ger4212 ge generator rotor design, operational issues. Insulation and manufacturing process of 500mw turbo. The synchronous electrical generator also called alternator belongs to the family of electric rotating machines. A hydrogencooled turbo generator is a turbo generator with gaseous hydrogen as a coolant.
Turbo generator converts mechanical energy into electrical energy. The moving or rotating part of generator is known as rotor. The rotor present inside the turbo generator rotates with a speed of 3000rpm. But if more than one earth fault occur, there may be a chance of short circuiting between the. Other pioneers in the field of electricity include hippolyte pixii who built an alternating current generator in 1832, and william ritchies construction of an electromagnetic generator with four rotor coils, a commutator and. Generator turntoturn fault protection using a stator.
Introduction a turbo generator is a turbine directly connected to the electrical. A reading of infinity or a very high resistance indicates an open circuit or a partially open condition in the rotor windings. Download ppt a presentation on construction of turbo generator. Construction of turbo generator pdf,summer trainig from. An early example of electromagnetic rotation was the first rotary machine built by anyos jedlik with electromagnets and a commutator, in 182627. Supervision rewinding rotor turbo generator 30 mw duration. Other members of the family are the directcurrent dc motor or generator, the induction motor or generator, and a number of derivatives of all these three.
Gas turbines are internal combustion engines, like the ones that drive cars, except that they use a rotating shaft or rotor instead of pistons reciprocating in cylinders. Turbogenerator electric generator steel free 30day. Turbogenerator free download as powerpoint presentation. It is important to note that the information in this section applies, primarily, to synchronous generators. This shop is meant for manufacturing of stator winding coils of generator that may be turbogenerator or hydrogenerator. Brushless excitation system of turbo generator open access. The rotor of an alternator is wound by field winding. This shop is meant for manufacturing of stator winding coils of generator that may be turbo generator or hydro generator. The availability of different designs of turbogenerators stator water systems calls for understanding the basic ingredients of the system, their function and how the system can perform its best. Generally, an ebook can be downloaded in five minutes or less.
It is coiled heavily field coils as it has to support large amount of current and voltage. Large steampowered turbo generators provide the majority of the worlds electricity and are also used by steampowered turboelectric ships small turbogenerators with gas turbines are often used as. Ppt on manufacturing process of bars in bhel bhel world. An example of the dc wind generator system is illustrated in fig. A certain number of tests like mechanical test and load test,bearing test, oc test are performed before the turbo generator is released, in order to know output efficiency. Powerpoint presentation on turbo generators powerpoint. Mar 28, 2015 ge hydrogen cooled 3d generator course overview. Theoretical values of critical speeds can be as follows. Scribd is the worlds largest social reading and publishing site. Iris power provides the sensors, instruments, diagnostic software and services needed to ensure your condition monitoring program provides the information required for you to understand the health of your turbine generators, prioritize corrective measures and plan maintenance outages prior to failures. The normal speed of a turbo generator is 1500 or 3000 rpm with four or two poles at 50 hz 1800 or 3600 rpm with four or two poles at 60 hz. It was invented by a hungarian engineer otto blathy. The turbo generator operates at a frequency of 50hz. This technical powerpoint template might fit presentations on technology, engineering, turbines, engines, etc.
Steam turbogenerators are often used for production of electric energy in companies where sources of steam with necessary technical parameters are produced in technological process. Ge has identified the potential for cracked rotor teeth in large steam turbine generators that have been in service for more than 10 years, experienced a negative sequence event, or hav an operational history includig extensive startstops. Generator turntoturn fault protection using a statorrotorbound. Turbo jet and turbo propeller engines like rockets, missiles, space ships etc. A certain number of tests like mechanical test and load test,bearing test, oc test are performed before the turbo generator is released. Maintenance partners rewinding and balancing of 15mva elin generator rotor in 8 weeks. The manufacturing process of turbo generator is mainly divided into stator section and rotor section where stator frame, stator core, stator windings, end covers are received. A keyphasor probe is also utilised to determine the angular position of the mini rotor. Ppt microturbine systems powerpoint presentation free. Advantages of turbo generators turbo generator concept is simple and time testing. A turbo generator set or turbine generator set is the compound of a steam turbine or gas turbine shaftconnected to a fast running electric generator for the generation of electric power. Armature winding the winding which carries only the load current. The rotor of a turbo generator is a nonsalient pole type usually with two poles. It is quite difficult rather impossible to manufacture, handle and wind the coil in stator slot of generator of higher generation capacity because of its bigger size and heavy weight.
This is the typical design for all large turbogenerators. Economic in cost compare to other generators, hence in us 90% of electrical generation is done by turbo generators. Mar 15, 2020 the rotor of an alternator is wound by field winding. Content introduction history working principle step by designing of turbo generators manufacturing of rotor. Bhel is the largest engineering and manufacturing enterprise in india in the energy related infrastructure sector today which manufactures turbo generators 2pole and 4pole ranging up to 150 mhz. Salient rotors will be very noisy and with a lot of windage loss. Construction of turbo generator pdf,summer trainig from bhel.
Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. This machine is the heart of unit b1, therefore, to monitor its condition during start. Hydrogencooled turbo generators are designed to provide a lowdrag atmosphere and cooling for singleshaft and combinedcycle applications in combination with steam turbines. Manufacturing of turbo generators seminar reportpdfppt. Sep 23, 20 a turbo generator is a turbine directly connected to an electric generator for the generation of electric power. Basic ac electrical generators 4 generator types various types of alternating current generators are utilized today.
But if more than one earth fault occur, there may be a chance of short circuiting between the faulty points on the winding. Turbo generator free download as powerpoint presentation. It consists of a wind turbine, a dc generator, an insulated gate bipolar transistor igbt inverter, a controller, a. Chart and diagram slides for powerpoint beautifully designed chart and diagram s for powerpoint with visually stunning graphics and animation effects. To augment the cooling of the rotor winding, the pressure established by the fan works in conjunction with the air expelled from the discharge parts along the rotor. Analysis of a turbo generator rotor acir edvam ozelame celso kenzo takemori edmar baars. The customer reported that the generator rotor had suffered a collector ring failure and also a ground to the main shaft. The entire flow of the working substance comes from atmosphere and is returned to the atmosphere back in each cycle. A keyphasor probe is also utilised to determine the angular position of the minirotor. Ppt on manufacturing of turbo generator bhel world.
The generator which runs in a synchronous speed corresponding to the no of pole and supply frequency parts. Unbalanced masses of the rotor produce centrifugal forces that lead to vibrations of the rotating turbomachine foundation. Generator tooth cracking is a condition that can result in the failure of your rotor or generator. Stator frame is the heaviest component of the generator. Winner of the standing ovation award for best powerpoint templates from presentations magazine. Aug 23, 2012 the turbo generator operates at a frequency of 50hz. Others have ordered new rotors for future replacement sequoya, turkey point, st lucie, byron, braidwood. Attention is devoted in the paper to state analysis of steam turbine after failure and possible causes of its damage.
A turbo generator is a turbine directly connected to an electric generator for the generation of electric power. Connect one test lead to the rotor shaft and the other. Turbogenerator rotor windings national electric coil. Within the range of rotational speed 03000 rpm high power output turbosets have a couple of critical speeds.
Turbo jet and turbopropeller engines like rockets, missiles, space ships etc. Analysis of reasons of steam turbogenerator failure. This is the paper presentation of the study of turbogenerators. Ppt turbines powerpoint presentation free to download. Wrig wound rotor induction generator the university of iowa intelligent systems laboratory turbine classification variable speed with partial scale energy converter variable speed with full scale energy converter t. Major arcing and heat damage occurred to the generator rotor forging shaft. Sep 03, 2016 bhel haridwar,construction of turbo generator and excitation system 1. Our new crystalgraphics chart and diagram slides for powerpoint is a collection of over impressively designed datadriven chart and editable diagram s guaranteed to impress any audience. Ge power systems ger4212 0801 2 ge generator rotor design, operational issues, and refurbishment options coupling coil slot retaining ring balance plug fan collector. It can be generated from the renewable energy sources which are environmental friendly.
Problem description estimate the influence of the bowed rotor and the machined flange on the vibration behavior using static structural results. The cooling air in generator is circulated by two axial flow fans located on the rotor shaft one at each end. Seminar on micro turbines report and ppt download introduction one is emerging from perhaps the most deliberate and least colourful engineering fields of all. Large steam powered turbo generators steam turbine generators provide the majority of the worlds electricity and are also used by steam powered turboelectric ships. The types discussed in the following paragraphs are typical of the more predominant ones in use. A presentation on construction of turbo generator ppt video.
Many other westinghouse generator owners have already replaced their generator rotor stp, cooper, farley. Because of the high thermal conductivity and other favorable properties of hydrogen gas this is the most common type in its field. Main slots 38 degrees from centre line, then each slots are at 8 degrees apart. Ppt microturbine systems powerpoint presentation free to. Ger2668 interturn shortcircuit detector for turbine. Slip rings and measuring brushes for field ground fault detection. Any single earth fault occurring on the field winding or in the exciter circuit is not a big problem for the machine. In this system permanent magnet pilot exciter and three phase main exciter with rotating rectifier are directly driven from the generator rotor. Construction of turbogenerator ppt download engineers world. With peak values of no more than 1 mil, nec leads the industry in balancing your generator or exciter rotor down to the lowest possible vibration levels. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect.
Rotor shorted turns are a common occurrence on generators, some can be rewound in the field while others require rotor. It is quite difficult rather impossible to manufacture, handle and wind the coil in stator slot of. The axial length of shaft of the rotor is very large as compared to its diameter in case of turbo generators. This is achieved with the aid of a fixed collar with a machined notch and a proximity probe. Cylindrical rotors figure are used on higher speed generators, such as steam turbine driven generators, due to their faster. Steam turbinegenerator overhaul and inspection guidelines. Jul 31, 20 stratton power products portable generator rotorstator resistance tables pub.
Insulation and manufacturing process of 500mw turbo generator. The flow of the working substance of specified mass is confined within the cyclic path. Necs engineers and skilled technicians also are experienced with all aspects of rotor balancing and testing. The negativesequence stator current frequency induces double currents on the field and damper windings. Manufacturing of turbo generators seminar reportpdfppt download. Ge hydrogen cooled 3d generator course overview youtube.
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