Abstract: This invention relates to an electric generator. The present day electric generator normally works on the principle of dynamically induced e.m.f. in the conductor/s housed within a rotary armature lying in a strong magnetic field. This generator has moving parts. An external mechanical force is essential for this present day generator. Since it is difficult to achieve continuous rate of change of flux cutting the conductor/s, in the statically induced principle, no generators are built on statically induced e.m.f. principle commercially. INDUCTION GENERATOR can be built by providing uniformly rotating magnetic field in the stationary field coils which is produced when supplied with 2 or 3 phase supply; can be utilized to statically induce e.m.f. in a stationary armature coil. 2 or 3 phase current is fed to the 2 or 3 phase stationary field coil. Generally, in Induction Motor, the stator is the field coil. This stationary field coil produces a rotary magnetic field. Now if an armature coil is provided in the rotor and the rotor is fixed and not allowed to rotate, an e.m.f. is induced in the armature coil. The armature coil can also be placed on the stator and the field coil may also be placed on the stationary rotor or vice versa. The generated e.m.f. is collected through a stationary segmentless commutator. Both field coil and the armature coil are stationary and there are no moving parts in this generator. INDUCTION GENERATOR can be built using this principle wherein NO EXTERNAL MECHANICAL FORCE IS REQUIRED.
This invention relates to an electric generator. The present day electric generator normally works on the principle of dynamically induced e.m.f. in the conductor/s housed within a rotary armature lying in a strong magnetic field. This generator has moving parts. An external mechanical force is essential.
According to Faraday's laws, whenever a conductor cuts across magnetic lines of flux an e.m.f is induced in the conductor. We can also say it as whenever a magnetic lines of flux cuts a conductor an e.m.f is induced in the conductor. This induced e.m.f is either dynamically induced or statically induced.
In dynamically induced system, the conductor is moved across magnetic lines of flux by using an external mechanical force. In statically induced system, one conductor is stationary, and a second conductor is placed next to it. Whenever the second conductor which is placed next to the first conductor is activated by momentarily passing of external electric current, magnetic lines of flux are generated in it which cuts the stationary conductor placed next to it. Momentary e.m.f is induced in the stationary conductor. No e.m.f is induced in the stationary conductor when current passing through the second conductor is constant, though a stationary flux exists, no matter however strong it is. Some rate of change of flux linked with the stationary conductor is very essential to generate an e.m.f
So to get steady induced e.m.f. in the stationary conductor a continuous change of magnetic flux linked with it is essential. This continuous change of magnetic flux linked with the stationary conductor is obtained by either continuous change of direction of electrical current passing through the second conductor placed next to it or make and break the flow of current through the second conductor placed next to it, even though the direction of the change of electrical current passing through the second conductor placed next to it or the duration of the make and break of the flow of current passing through the second conductor placed next to it, is in intervals of mill seconds.
As per the second law of Faraday, which states that, the magnitude of the induced e.m.f. in the stationary conductor is equal to the rate of change of flux linkages in it. So if the rate of change of flux linkages in a stationary conductor is more, more e.m.f. is induced.
This rate of change of flux linkages in a stationary conductor is easily achieved in a dynamically induced principle where in the conductor is made to move across magnetic lines of flux, by an external mechanical force. Present day generators work on this principle.
Since it is impossible to continuously move a conductor across magnetic lines of flux in a linear motion, a rotary motion is adopted to move the conductor, to make it to cut the magnetic flux continuously as long as it rotates, wherein the required magnetic flux is provided using either
pennanent or externally excited poles, which are kept in a circle so as to enable the rotating conductor to cut the magnetic flux. This is the present day system of generators.
It is open to the objection that,
Since it is difficult to achieve continuous rate of change of flux cutting the conductor/s, in the statically induced principle, no generators are built on statically induced e.m.f. principle commercially.
The object of the present invention is to develop a system, which will be free from the above mentioned drawback enabling commercial building activities of generators on statically induced e.m.f. principle wherein there is no external mechanical force required to drive the rotor, which is either carrying conductor/s or electromagnet/s as the case may be.
It is known that in Induction Motor when the Magnetic Field Coil Winding which is a stator when supplied with 3-phase current, produce a magnetic field or flux which is of constant value but which revolves or rotates. However, it should be clearly noted that in this revolving field or flux, there is no actual revolution of the flux lines. The flux due to each phase changes periodically according to the changes in the phase currents, but the magnetic field itself does not move around the magnetic field winding or the stator.
That is when three phase windings displaced in space by 120°, are fed by three currents displaced in time by 120°, they produce a resultant magnetic field which rotates in space as if actual magnetic poles were being rotated mechanically.
Also, when stationary coil wound for even two phase and are supplied with 2 phase supply, then also a uniformly rotating magnetic field of constant value is produced.
I have found that:
INDUCTION GENERATOR can be built on statically induced principle by using uniformly rotating magnetic field in the stationary field coils which is produced when supplied with 2 or 3 phase supply displaced in time by required phase difference in soy X° , can be utilized to statically induce e.m.f. in a stationary armature coil.
According to the present invention, when 2 or 3 phase current is supplied to a stationary 2 or 3 phase field coil with a Xo phase difference in between the phases wherein Xo is the required phase difference, a rotating magnetic field is produced. The armature coil is also kept stationary. The rotary magnetic field or
flux induces on e.m.f. in the stationary armature coil. This is a statically induced e.m.f.
This invention will now be explained.
2 or 3 phase current is fed to the 2 or 3 phase stationary field coil. Generally, in Induction Motor, the stator is the field coil. This stationary field coil produces a rotary magnetic field. Now if on armature coil is provided in the rotor and the rotor is fixed and not allowed to rotate, an e.m.f. is induced in the armature coil.
The armature coil can also be placed on the stator and the field coil may also be placed on the stationary rotor or vice versa.
The generated e.m.f. is collected through a stationary segmentless commutator. Both field coil and the armature coil are stationary and there are no moving parts in this generator.
CLAIMS:
1. INDUCTION GENERATOR which is built on staiicaily induced principle by using uniformly rotating magnetic field in the stationary field coils which is produced when supplied with 2 or 3 phase supply; and used to statically induce e.m.f. in a stationary armature coil.
2. INDUCTION GENERATOR as claimed in Claim-1, which uses any existing induction mbtor
converting it as an INDUCTION GENERATOR using statically induced principle.
3. INDUCTION GENERATOR as claimed in Claim-1 and Claim-2 ,whicnuses conventional
rotary type armature surrounded by the conventional type of poles.
4. INDUCTION GENERATOR as claimed in Claim-1, Claim-2 and Claim-3, which is
excited by using a common electromagnet or individual electromagnets.
5. INDUCTION GENERATOR as claimed in Claim-1, C(aim-2,Claim-3 and Claim-4, in
which the electromagnets are excited by a D.C. source or an A.C.
6. INDUCTION GENERATOR as claimed in Claim-1, Claim-2,Claim-3, Claim-4 and
Claim-5, wherein the armature coil is placed on a statioriary stator and the field coil is
placed on a stationary rotor or vice versa.
7. INDUCTION GENERATOR as claimed in Claim-1, Claim-2,Claim-3, Claim-4, Claims
and Claim-6, which uses one or more conductors which are placed next to each other in a single plane
, or more than one parallel planes.
| # | Name | Date |
|---|---|---|
| 1 | 3101-che-2007 abstract.pdf | 2011-09-04 |
| 1 | 3101-che-2007-form 1.pdf | 2011-09-04 |
| 2 | 3101-che-2007 claims.pdf | 2011-09-04 |
| 2 | 3101-che-2007-description(provisional).pdf | 2011-09-04 |
| 3 | 3101-che-2007 correspondence-others.pdf | 2011-09-04 |
| 3 | 3101-che-2007-correspondnece-others.pdf | 2011-09-04 |
| 4 | 3101-che-2007 description (complete).pdf | 2011-09-04 |
| 4 | 3101-che-2007 form-5.pdf | 2011-09-04 |
| 5 | 3101-che-2007 form-1.pdf | 2011-09-04 |
| 6 | 3101-che-2007 description (complete).pdf | 2011-09-04 |
| 6 | 3101-che-2007 form-5.pdf | 2011-09-04 |
| 7 | 3101-che-2007 correspondence-others.pdf | 2011-09-04 |
| 7 | 3101-che-2007-correspondnece-others.pdf | 2011-09-04 |
| 8 | 3101-che-2007 claims.pdf | 2011-09-04 |
| 8 | 3101-che-2007-description(provisional).pdf | 2011-09-04 |
| 9 | 3101-che-2007 abstract.pdf | 2011-09-04 |
| 9 | 3101-che-2007-form 1.pdf | 2011-09-04 |