File Name: electric generator parts and functions .zip
The electric generator was invented before the correlation between electricity as well as magnetism was discovered.
A generator is a machine used to convert mechanical energy into electricity. Powered by a fuel source such as oil, gasoline, wind or moving water, generators create electrical current through electromagnetic induction. Generators widely serve as backup power sources for factories and hospitals, where the facility can set them up to work immediately if the main power goes out.
The electric generator was invented before the correlation between electricity as well as magnetism was discovered. These generators use electrostatic principles to operate with the help of plates, moving belts which are charged electrically as well as disks to carry charge toward an electrode with high potential.
Generators use two mechanisms to generate the charge like the triboelectric effect otherwise electrostatic induction. So, it generates low current as well as very high voltage due to the complexity of insulating machines as well as their inefficiency. The power ratings of Electrostatic generators are low so they never utilized for electrical power generation. The practical applications of this generator are to supply power to X-ray Tubes as well as in atomic particle accelerators.
An alternate name of an electric generator is a dynamo for transmission as well as the distribution of energy over power lines to different applications like domestic, industrial, commercial, etc. These are also applicable in aircraft, automobiles, trains, ships for generating electrical power. For an electrical generator, the mechanical power can be obtained through a rotary shaft that is equivalent to the shaft torque which is multiplied by using angular or rotational velocity.
A generator is a machine that converts mechanical energy into electrical energy. It works based on the principle of the faraday law of electromagnetic induction. The faradays law states that whenever a conductor is placed in a varying magnetic field, EMF is induced and this induced EMF is equal to the rate of change of flux linkages. This EMF can be generated when there is either relative space or relative time variation between the conductor and the magnetic field. So the important elements of a generator are:.
The power output capacity of an electric generator is a wide range. By selecting an ideal generator, high and low power requirements can be easily met through identical output power. Several fuel options like petrol, diesel, LPG, natural gas are accessible for electric generators. Electrical generators are portable because they designed with handles and wheels. So, they can be easily moved from one location to another.
The conversion of energy that occurs in a generator is known as an alternator. This includes both stationary as well as moving parts which work jointly to generate the electromagnetic field as well as electrons flow to generate electricity.
The fuel system in the generator is used to generate the required energy. This system comprises a fuel pump, fuel tank, a return pipe, and a pipe that is used for connecting the engine and tank.
The main function of the engine is to supply electrical energy to the generator. The range of power generated by a generator can be decided through the power of the engine. This component is used to control the voltage of the electricity that is generated. It also converts the AC electricity to DC if required. Generally, generators produce a lot of heat so reduce the heat from the overheat of a machine, the cooling system is used.
The exhaust system is used to eliminate the fumes during its operation. In a generator, there are several small as well as moving parts which are necessary to lubricate them sufficiently using engine oil so that smooth operation can be obtained as well as it protects from surplus wear. The levels of lubricant should be checked frequently for every 8 hours of the process.
Batteries are mainly used to provide power to the generator. It is a complete automatic component used to make sure the battery is prepared to go once necessary by supplying it using a stable low-level voltage. The control panel is used to control every feature of the generator while operating from beginning to end.
Generators are basically coils of electric conductors, normally copper wire, that is tightly wound onto a metal core and is mounted to turn around inside an exhibit of large magnets. An electric conductor moves through a magnetic field, the magnetism will interface with the electrons in the conductor to induce a flow of electrical current inside it. The conductor coil and its core are called the armature, connecting the armature to the shaft of a mechanical power source, for example, a motor, the copper conductor can turn at exceptionally increased speed over the magnetic field.
The point when the generator armature first starts to turn, then there is a weak magnetic field in the iron pole shoes. As the armature turns, it starts to raise the voltage. Some of this voltage is making on the field windings through the generator regulator. This impressive voltage builds up a stronger winding current, raises the strength of the magnetic field. The expanded field produces more voltage in the armature. This, in turn, makes more current in the field windings, with a resultant higher armature voltage.
At this time the signs of the shoes depended on the direction of flow of current in the field winding. The opposite signs will give the current to flow in the wrong direction. An electric generator is basically working in reverse to the motor. Some generators which are used at Hoover Dam will provide a vast amount of energy through transmitting the power which is created by turbines.
The generators which are used in commercial, as well as residential, are very small in size but they depend on different fuel sources such as gas, diesel as well as propane to generate mechanical power.
This power can be used in a circuit to induce a current. Once this current has been created then it is directed by using copper wires to power exterior devices, machines otherwise whole electrical systems. An electric generator is related to how a water pump forces water using a pipe.
These are also called alternators. It is the most important means of producing electrical power in many of the places since nowadays all the consumers are using AC. It works based on the principle of electromagnetic induction.
These are of two types one is an induction generator and another one is a synchronous generator. The induction generator requires no separate DC excitation, regulator controls, frequency control, or governor. This concept takes place when conductor coils turn in a magnetic field actuating a current and a voltage. The generators should run at a consistent speed to convey a stable AC voltage, even no-load is accessible.
Synchronous generators are large size generators mainly used in power plants. These may be rotating field type or rotating armature type. In the rotating armature type, the armature is at the rotor and the field is at the stator. Rotor armature current is taken through slip rings and brushes. These are limited due to high wind losses. These are used for low power output applications.
Rotating field type of alternator is widely used because of its high power generation capability and the absence of slip rings and brushes. It can be either 3 phase or two-phase generators.
A two-phase alternator produces two completely separate voltages. Each voltage may be considered as a single-phase voltage.
Each is generated voltage completely independent of the other. These can be connected either delta or wye connections. In Delta Connection each coil end is connected together to form a closed loop.
In Wye Connection one end of each coil connected together and the other end of each coil left open for external connections. A Wye Connection appears as the letter Y. These generators are packaged with an engine or turbine to be used as a motor-generator set and used in applications like naval, oil and gas extraction, mining machinery, wind power plants, etc.
DC generator is typically found in off-grid applications. These generators give a seamless power supply directly into electric storage devices and DC power grids without novel equipment. The stored power is carried to loads through dc-ac converters.
The DC generators could be controlled back to an unmoving speed as batteries tend to be stimulating to recover considerably more fuel. C Generators are classified according to the way their magnetic field is developed in the stator of the machine. Permanent magnet DC generators do not require external field excitation because it has permanent magnets to produce the flux.
These are used for low power applications like dynamos. Separately-excite DC generators require external field excitation to produce the magnetic flux. We can also vary the excitation to get variable output power. These are used in electroplating and electrorefining applications. Due to residual magnetism present in the poles of the stator, self-excited DC generators can able to produce their own magnetic field once it is started.
These are simple in design and no need to have the external circuit to vary the field excitation. Again these self-excited DC generators are classified into shunt, series, and compound generators. These are used in applications like battery charging, welding, ordinary lighting applications, etc. These are extremely used in different applications and these are available in different configurations by changing power. These are helpful in normal disasters once grid power damages.
This kind of generator is powered through diesel fuel otherwise gas to provide short-term electrical power. The main characteristics of the portable generator are. This type of generator uses an engine by connecting it into an alternator for generating AC power, and also uses a rectifier to change the AC to DC power. These are used in refrigerators, air-conditioners, boat automobiles which require the values of specific frequency as well as voltage.
The characteristics of this generator mainly include the following. This is one kind of an electrical system, used to operate through an automatic transfer switch that gives a signal to power up a device in power loss.
The best characteristics of a standby generator include the following. Industrial generators are something different as compared with commercial otherwise residential applications.
Usually, these are more customized as compared with other types.
Generators are extremely important for a variety of industries in order to provide power to remote and urban construction sites and to provide power in the event of a power outage. Generators are packaged units that provide electricity via an engine. The engine and various components turn a fuel source into usable electricity for a large number of applications. The engine is the workhorse of the generator. Generator engines are typically powered by either diesel or natural gas. The fuel turns the engine, and as the engine turns, various components, including the alternator and batte ry system, turn that mechanical energy into usable electricity for your equipment. The size of the engine typically dictates how much electricity the generator produces.
The rotor generates a moving magnetic field around the stator, which induces a voltage difference between the windings of that stator. This produces the alternating current AC output of the generator. The following are factors that you need to keep in mind while assessing the alternator of a generator:. This cycle continues until the generator begins to produce output voltage equivalent to its full operating capacity. As the output of the generator increases, the voltage regulator produces less DC current.
A dynamo is an electrical generator that creates direct current using a commutator. Dynamos were the first electrical generators capable of delivering power for industry, and the foundation upon which many other later electric-power conversion devices were based, including the electric motor , the alternating-current alternator , and the rotary converter. Today, the simpler alternator dominates large scale power generation , for efficiency, reliability and cost reasons. A dynamo has the disadvantages of a mechanical commutator. Also, converting alternating to direct current using rectifiers such as vacuum tubes or more recently via solid state technology is effective and usually economical.
devices known as Basic AC Electric Generators. The information in this A simple generator has two basic parts – field and winding. The field is the magnetic.
This article is for the design, materials, manufacture, testing, and commissioning of packaged stand-by diesel engine generators intended for permanent installation in industrial plants. Self-contained enclosure shall be provided for the diesel generator set. The enclosure shall be manufactured such that all part are accessible for inspection and minor maintenance without removal of the enclosure or enclosure roof. It shall include the following features:. The enclosure and all other items shall be designed and built by the supplier as an integral part of the entire diesel generator set, and shall perform without overheating in the environment specified.
Generators are useful appliances that supply electrical power during a power outage and prevent discontinuity of daily activities or disruption of business operations. Generators are available in different electrical and physical configurations for use in different applications. In the following sections, we will look at how a generator functions, the main components of a generator, and how a generator operates as a secondary source of electrical power in residential and industrial applications. An electric generator is a device that converts mechanical energy obtained from an external source into electrical energy as the output. Instead, it uses the mechanical energy supplied to it to force the movement of electric charges present in the wire of its windings through an external electric circuit.
Electric generator , also called dynamo , any machine that converts mechanical energy to electricity for transmission and distribution over power lines to domestic, commercial, and industrial customers. Generators also produce the electrical power required for automobiles, aircraft, ships, and trains. The mechanical power for an electric generator is usually obtained from a rotating shaft and is equal to the shaft torque multiplied by the rotational, or angular, velocity. The mechanical power may come from a number of sources: hydraulic turbines at dams or waterfalls; wind turbines; steam turbines using steam produced with heat from the combustion of fossil fuels or from nuclear fission; gas turbines burning gas directly in the turbine; or gasoline and diesel engines. The construction and the speed of the generator may vary considerably depending on the characteristics of the mechanical prime mover. Nearly all generators used to supply electric power networks generate alternating current , which reverses polarity at a fixed frequency usually 50 or 60 cycles, or double reversals, per second.
This is a popular alternative to using grid power generated from wind turbines or fossil fuels and a high voltage steam turbine in a power plant or power station. There are many types of generators out there, from petrol generators , portable generators and inverter generators. To home generators that may run on natural gas, standby generators for a power outage, and much larger industrial generators. However in this article, we will specifically be talking about diesel generators, also known as gensets. Here at Advanced, our highly experienced industry experts know everything there is to know about diesel gensets.
Какая разница?. - Тебе больше нечем заняться? - Сьюзан метнула на него недовольный взгляд. - Хочешь от меня избавиться? - надулся Хейл. - Если честно - да, - Не надо так, Сью, Ты меня оскорбляешь. Глаза Сьюзан сузились.
Вопрос национальной безопасности. За дверью послышалось движение, раздались голоса. Он постучал. Послышался голос с сильным немецким акцентом: - Ja. Беккер молчал. - Ja. Дверь слегка приоткрылась, и на него уставилось круглое немецкое лицо.
В этот момент Сьюзан поймала себя на том, что готова взвалить на Хейла вину за все свои неприятности.
Люди на подиуме с нетерпением ждали, когда на экране появится их бывший сослуживец Энсей Танкадо. Ускоренное проигрывание видеозаписи придавало изображению некоторую комичность. Вот Танкадо вышел на открытое место и залюбовался открывшимся перед ним зрелищем. Он козырьком поднес руку к глазам и стал разглядывать шпили над внушительным фасадом.
An electric motor is an electrical machine that converts electrical energy into mechanical energy.