Table of Contents
I. Introduction 2
II. Construction of the Machine 2
1) The Stator 2
a. The steel frame: 2
b. The core: 2
c. Stator windings (conducting wires): 3
2) The Rotor 3
i. Squirrel Cage Type: 3
ii. Wound Rotor or Slip Ring: 3
3) Other Components for Construction: 4
1. The Shaft: 4
2. Bearings (End Rings): 4
3. Fan: 4
4. Terminal Box: 4
5. Two End Bells: 4
III. The Different Sizes of the Induction Motor 5
IV. Starting Methods 5
V. Speed Control 6
VI. Applications of three-phase induction motor 7
VII. Conclusion 8
References 9
Introduction
Searching for the best is a non-stoppable process, where the best is defined according to the desired application, but there are some common concerns to be considered as the best, such as, the good performance with suitable cost for example. Three phases induction motor is widely applied in different machines on the industrial field for it is low cost, simple design and more to be discovered in this research. To produce this motor two different selections were taken, firstly, that it is three phases, according to Brain in 2000, the sinusoidal wave curves of the three phases happens to have a curve of the three that is reaching its peak current in any moment counter to a two phase power for example (Brain, 2000). Secondly, that is by induction, induction motors requires no separate sources to start the motor and can maintain different levels of speeds. In the huge motors world, each type of motors has its own way of construction, starting method, different sizes and power output and how the speed can be controlled in addition to the applications that are applicable for each type of these motors.
Construction of the Machine
The outer shape of any pro...
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WEG. (2012, October ). Three-Phase Induction Motors - Master Line. Retrieved from MEG: http://ecatalog.weg.net/files/wegnet/WEG-three-phase-induction-motors-master-line-50019089-brochure-english.pdf
Brain, M. (2000, April 01 ). "How Power Grids Work" . Retrieved from HowStuffWorks.com:
http://science.howstuffworks.com/environmental/energy/power.htm
Construction of Three Phase Induction Motor. (n.d.). Retrieved from Online Electrical Engineering Study Site:
http://www.electrical4u.com/construction-of-three-phase-induction-motor/
Education, D. (Director). (2014). Construction of Three Phase Induction Motor [Motion Picture].
Three Phase Induction Motors. (2011). In S. K. Bhattacharya, Basic Electrical and Electronics Engineering (pp. 181-
226). Pearson Education India.
The second method of measuring three phase power is the useful for both balanced and unbalanced loads. By connecting a wattmeter with its current probes in series with red phase and volt probes between red and yellow phase. The second wattmeter should be connected with its current probes in series with the blue phase and the volt probes between the blue and yellow phases. By adding these two values together there total power for the system can be
The light turns red and you slowly come to a stop driving your 1992 GMC Syclone equipped with a 280 horsepower 4.3 liter V-6 teamed up with a four speed automatic transmission. The GMC Syclone is basically a sporty run-off of GMC's Sonoma. In the next lane, a brand spanking new Ford Mustang equipped with a 320 horsepower 4.6 liter V-8 pulls up. You seem to be feeling pretty spunky today, so you rev your engine signaling to the driver of the Mustang that you want to race. The other driver looks over, gives a glance at your GMC Syclone and begins to laugh. However, he goes ahead and revs his engine giving the go-ahead for a race.
...late 17th century, and beginning of the 18th century, transportation was favored by American society so much, the wealthier would hire chauffer’s to take people places. So not only did the motor produce a better and more efficient life style, it also created a huge business industry, as we know it today called, “valeting”. The actual motor worked like this. “Two cups filled with mercury would contain a magnet and a wire with one being fixed and the other free to move. Whenever a current was passed through the wire, the free moving magnet or wire would revolve around its fixed partner due to the electromagnet forces being produced.” (History of Innovation). This first motor was a prime example of the fact that movement could be created by electricity and electricity could be created by friction. This motor was the most useful and applicable invention in the 1800’s.
The case revolves around Bob Marvin, president of the Motor Parts Corporation (MPC), and his executive vice president, AL Shepherd, who held a key senior management position in the company. After Bob, Al had the most important job since most of the line functions reported directly to him. His job required a considerable amount of traveling which he was not able to do lately because of his wife’s illness. Al 's wife, Ruth, was suffering from a malignant brain tumor due to which he was spending more and more time away from work to be with her.
The idea of such a machine tantalized Tesla for years until one day at the age of 24 when he was living in Budapest working for the Central Telephone Exchange he had an epiphany and began making sketches that would soon develop into the world's first induction motor.
Anybody and everybody can become an industrial machinery mechanic; especially, those who are passionate about getting their hands plastered in motor oil, grease, and other mechanical lubricants. These people will more than likely be ecstatic about getting into industrial machinery mechanics. They need to be able to put in one hundred ten percent of their effort into becoming an industrial machinery mechanic. An industrial machinery mechanic’s overall objective on the job is to stop a mechanical error before it happens. An industrial machinery mechanics are often caught repairing, maintaining, and fabricating machinery. They will be required to have certain education and training as well as some on the job training or complete an apprenticeship program. They will receive many benefits for working in this particular field.
The future American commuter will undoubtedly have to transition from the use of fossil fuels to new alternatives due to the diminishing availability of the nation’s oil resources. How will America respond to this upcoming issue? It is difficult to predict which alternative fuel source America will ultimately choose, but with the premier of Nissan’s electric powered Leaf and other companies; such as Tesla Motors and Chevy, with their electric cars ready for market, the electric car may be winning the race to become the new standard for the gasoline alternative. Electric cars resolve long standing environmental issues, but it will need to maneuver around many roadblocks to become a marketable consideration for the general public. The cost of electric cars, currently on the market, makes them an impractical purchase for the average consumer. If cost is not the growing concern in today’s economy which prevents the consumer from considering this option; they may deny the technological advance due to battery storage capabilities and the inadequate infrastructure in place to refuel and provide for them.
Throughout the Industrial Revolution in 1780 there were many positive and negative effects that resulted during this time including technologies were improving, machinery that was making travel, luxuries and comfort better, and poor working/ living conditions. The Industrial Revolution was when societies in Europe and America started invent machines, which made manufacturing of products quicker, easier, and cheaper. Before all these machines in factories were created, the economy was all based on farming and peoples abilities to make products to sell. The Industrial Revolution began in Great Britain in the 1780’s and to Western Europe and the United States throughout the 18th Century. It began in Great Britain because there was good weather
As humans delve into the twenty-first century, scientific research continues at an exponentially increasing rate. While the work of researchers seems to affect people in positive ways, the common debate among the general population is whether or not there is a limit to how far scientists can take their research and impact the future of society. The changes that scientists induce upon society often escape foresight, such as diseases, dangerous paints, and other products that do not pass the test of time. One big issue that is fiercely debated is how to go about switching to alternative-fuel-source automobiles, given that the world’s supply of oil will run dry relatively soon. The electric car seems to be the best candidate as a replacement for the moment, but many people are still weary about completely discarding the trusty internal combustion engine for an invention barely as old as the people who will buy them. The electric fuel is promising, but it has not been around long enough to undergo the test of time needed for mass acceptance. Here the more direct question arises: is the electric car the solution to a more economically responsible car?
This involves relating the current supplied to the motor, motor shaft rotational speed, motor efficiency, and the power factor as a function of the load of the motor, similar to the figure on page 21 of the Lab Manual.
A direct current in a set of windings creates a polar magnetic field. A torque acts on the rotor due to its relation to the external magnetic field. Just as the magnetic field of the rotor becomes fully aligned with the external magnetic field, the direction of the current in the windings on the armature reverses, thereby reversing the polarity of the rotor's electromagnetic field. A torque is once again exerted on the rotor, and it continues spinning.
The annual report of the company shows status of the company’s business. Through the annual report of the company, creditors, investors, and everyone else can see the financial health of the business for the company. Fords and General Motors are two competitors in auto mobile industry area, and these two companies are most famous automobile companies that United States manufacturing businesses. Since these two companies are in same industry area, the investors compare these two companies which company is more worthy to invest their money. Annual report is financial certification that how a company was financially. Liquidity, solvency, and profitability are three way to compare these two companies financially.
v+Vmaxsin(angular position of coil)”(cookeadamsdellmoore pg 509). This hopefully adds some insight into the use of electric motors, and the principles that make these motors work. Such as electromagnetism, binary switches for DC motors, and the selection of a running frequency of a motor through the use of an oscillator.
The issue of electric car has been arising nowadays. But many of us never really find a true
In 1831, using his "induction ring", Faraday made one of his greatest discoveries - electromagnetic induction: the "induction" or generation of electricity in a wire by means of the electromagnetic effect of a current in another wire. The induction ring was the first electric transformer. In a second series of experiments in September he discovered magneto-electric induction: the production of a steady electric current. To do this, Faraday attached two wires through a sliding contact to a copper disc. By rotating the disc between the poles of a horseshoe magnet he obtained a continuous direct current. This was the first generator. From his experiments came devices that led to the modern electric motor, generator and transformer.