Classification of Transformers

Classification of Transformers

according to number of phases :

1- single phase transformer

2- poly phase transformer

according to frequency : 

1- very low frequency transformer

2- audio frequency transformer

3- high frequency transformer

4- IF frequency transformer

 according to turns ratio:

1- stepup transformer

2- stepdown transformer

according to thier function :

1- power transformer

2- distribution transformer

3- voltage transformer

4- current transformer

Semiconductors

 Semiconductors :

 

1- Intrinsic semiconductors

2- Doped semiconductors

- n-type materials

- p-type materials

Power Transformer

Transformer is one of the most vital and important electrical machinery. The development of the present day power system is very much attributable to the large number and types of transformer that are in operation in the system, such as, generator transformers, step-up transformers, step-down transformers, interlinking transformers, power transformers & distribution transformers etc. Being a static machine, it is inherently reliable compared to other machines,. Distribution transformers are a important link between the power

Biogas can provide a clean, easily controlled source of renewable energy from organic waste materials for a small labour input, replacing firewoood or fossil fuels (which are becoming more expensive as supply falls behind demand). During the conversion process pathogen levels are reduced and plant nutrients made more readily available, so better crops can be grown while existing resources are conserved. 

Biomass Energy Overview

The confusion about the benefits and hazards of biomass energy is still haunting the human mind. Many are unable to decide whether to use it or to abandon it. I have tried to portray a picture of the biomass power generation system and left the decision to the reader. Now it is up to you that how useful you evaluate this

Wave Power Overview

Waves are a result of the effects of wind on the oceans and seas. This wind originates from the major influx of energy to this planet: solar energy from the sun. The energy contained within waves is around the world is huge; in some places values of 70MW/km of wave front are experienced. In theory it could then be said that huge generating stations could be built which would capture all this energy and supply all or most of our

Tidal Energy Overview

Tidal energy differs from all other energy sources in that the energy is extracted from the potential and kinetic energies of the earth-moon-sun system. The well known ocean tides result from this interaction, producing variations in ocean water levels along the shores of all continents. As the water level fluctuates twice daily

Fossil Fuels Overview

Fossil Fuels are some of the most important energy sources in our world today. They are responsible for everything from heating our houses to fueling our automobiles. Coal, Oil or Petroleum, and Natural Gas are considered the three, basic fossil fuels. They are created by the fossilization of plants and animals. These decay, and revert into their most basic forms. Carbon in it's pure form is coal, and petroleum and natural gas are hydrocarbons (molecules formed primarily from hydrogen and carbon atoms) formed during the decaying

Nuclear Energy Overview

Nuclear energy is another non-renewable source that has gained popularity in the last few years. With the depleting resources and high energy demand the world is looking towards the nuclear energy as its source that is created from the nucleus of an atom. Nuclear energy, as the term says, is released from the very nucleus of an atom. This happens as a result of its mass being converted to energy. Even though nuclear power is safer

Geothermal Energy Overview

Hot rocks underground heat water to produce steam. 

We drill holes down to the hot region, steam comes up, is purified and used to drive turbines, which drive electric generators.  

There may be natural "groundwater" in the hot rocks anyway, or we may need to drill more holes and pump water down to them.

The first geothermal power station was built at Landrello, in Italy, and the second was at Wairekei in New Zealand. Others are in Iceland, Japan, the Philippines and the United States.

Wind Energy Overview

The use of wind power has been around for thousands of years in different forms and nowadays is mainly used to generate electricity. Take a look at our wind energy facts page for some of the ways wind power was used in days gone by.

The proper name of a wind generator is actually “Wind Energy Converter” which is a device that converts the potential energy in the wind to another form of Wind Power energy. This can either be mechanical or electrical. When the wind blows, the rotor blade stops a percentage of the wind. That percentage is converted into energy. According to physics, the maximum amount of wind

Solar Energy Overview

The Sun sends an almost unimaginable amount of energy towards Planet Earth – around 10 17 W (one hundred thousand million million watts). In electrical supply terms this is equivalent to the output of about one hundred million modern fossil fuel or nuclear power stations. To state it another way, the Sun provides in about an hour the present energy requirements of the entire human population for a whole year. However

Renewable Energy Overview

is energy which comes from natural resources such as sunlight, wind, rain, tides, and geothermal heat, which are renewable (naturally replenished). In 2008, about 19% of global final energy consumption came from renewables, with 13% coming from traditional biomass, which is mainly used for heating, and 3.2% from hydroelectricity. New renewables (small hydro, modern biomass, wind, solar, geothermal, and biofuels) accounted for another 2.7% and are growing very rapidly. The share of renewables in electricity generation is

Electrical Power Systems introduction

is a network of electrical components used to supply, transmit and use electric power. An example of an electric power system is the network that supplies a region's homes and industry with power - for sizable regions, this power system is known as the grid and can be broadly divided into the generators that supply the power, the transmission system that carries the power from the generating centres to the load centres and the distribution system that feeds the power to nearby homes and industries. Smaller power systems are also