Wind mill Project

WIND POWER UNIT in College Premises

Established by Department of Mechanical Engineering 

                                                                                               Wind mill Project

Windmill (The ultimate renewable source of energy)

We use up approximately 339,000,000 tons of coal and other fossil fuels which account for 81% of energy generated in INDIA Per annum.

The other sources like natural gas, hydro, wind have a small share in the market, think about the earth being drilled out with 400,000,000 tons of fuel, rock, etc deposits from the depths just to produce fly ash and much dangerous carbon pollutants which in turn put the human race on edge of leading a polluted, dangerous environment literally making us grilled chicken raising the temperature slowly at rate of 1 degree per year due to global warming, etc.

We know the fact that electrical machines are non-smoke emitting machines hence, Contributing our smallest yet very helpful in saving our planet from pollution, A Team of 4 members belonging to the electrical engineering branch have come up with idea of building a Windmill which is capable of powering our classroom along with 4 fans and 2 tube-lights and an activity room at our college.

To make our contribution worth of notice we planned to construct it as robust as possible. The entire construction process is engineered by the brain ‘Mr.K.V.Rao’ guiding the students towards green energy using Wind medium.

The entire project is based on basic principles of physics which depends on concepts like strength, balance, production, storage and usage. These stages are well planned and executed by our team for successfully erecting the 15 feet tall clean energy source for us.

A symbol of avoiding pollution and a sample of hard-work, the Windmill Is made on following specifications, a 12 feet long base stand made of PVC pipes coated with rust proof Lead painting, a single shaft with key hole to hold the blades up in the position, the generator which is main source of our production with 12V AC output, 24 poles, 1-phase wound, the speed controller circuit and the charging unit which charges about 24V batteries at 300 Watts.

Few formulas involved in the expected output values calculations are as follows:

            E=(ZNØP/60A),where we have Ø proportional to armature current.

The working process of this windmill is very simple and since the entire project is made out of scrap the output observed is very small but we are heading with a plan of installing 3 more windmills on top of each building in our college with much better fabricated setup enabling us to cut down the losses and produce green energy which races with the present share 98% of entire college power usage from the electricity board to 88% also standing as a mark the efforts of our students to save energy and use the renewable energy sources. Standing 15 feet tall as a symbol of green energy to entire annojiguda area we plan to campaign other industries, villages nearby on the concepts of renewable sources of energy.

Windmill at VBIT:

Mechanical specifications:

·         25 feet total constructed with iron and steel material.

·         4feet 5 inch blades/flaps in dimension and 4 in number placed exactly at equal angles of separation (90 degrees).

·         All joints and structure is based on triangular pyramid concept for maximum balance and mechanical strength.

·         A smooth axel is placed at bottom of the generator and wind blade set to allow 360 degree movement of system when the direction of wind is changed.

Civil Specifications:

·         Wind speed: 0-14 km per hr in and around the college.

·         Minimum wind speed required for operating the windmill and generating the output is 4kms/hr.

·         Windmill is placed dimensionally on west facing as wind variations are less due to factors like obstruction due to other constructions.

·         Data being regulated and verified from R&D VBIT.

Electrical Specifications:

·         The entire generator and shaft coupling along with the charging and converter unit is designed as per the pre-planned specifications during planning.

·         Construction specifications: 12V AC, 0.5 Amps per rotation test, 0.8 ohms resistance,300watts.

·         Single phase rectifier circuit using Thyristers for charging the DC batteries with a reverse flow preventive connection.(we used diode for prevent reverse flow)

·         Generator specifications are

·      Completely 1-phase winding

·      Stator sheets are made out of iron sheets cut by pressing machine from sample dimensions.

·      24 pole rotor innovatively prepared from electrically magnetised elements surrounded by 2 alternate cups of iron strategically cut into teeth representing the North and south poles alternatively.

·      Copper wire used for winding is 20 gauge wire wound in wave winding technique.

·      Class B insulation liquid and sheets are used for the finished stator to prevent moisture depositing in windings after heat blow and also fibre plastic threads and bamboo slits to bind the windings together, keep them intact in slots.

·  15 mill maylar sheath for lamination in slots b/w winding and stator core.

Test results:

·         13V output and 250 watts is being observed at output terminals.

Electronic specifications:

·         Speed regulator and output power adjustment with current as variable factor.

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