Alternating current generator

Abstract

Our AC generator has a rotor with multiple U profile long permanent magnets (3) with North and South arms(4) fitted in holder boxes (5) & anchored between rotor side plates (2). Electrical steel stampings (11) with central (12), two sides with ridges (29), curved tails (13) and holes (14, 15) are stacked in sets &fitted in stator body (21) cavities and needed coils (26) wound. Side overhang coil magnetisers pads (16) fixed in a nonmagnetic plate (18) fitted to stator sides coil overhangs (19) by holes (30). Rotor Umagnets (3) extends to both stator overhangs, induces more electricity in stator coils and side overhangs. Rotor shaft outside pulley / gear (25) engaging turbine shaft rotates rotor U magnets inducing AC electricity in stator coils. Electronic controls (24) give needed electricity. Our generator from watts to MW capacity has needed size of rotor & stator coils with cooling.

Description

[0001] ALTERNATING CURRENT GENERATOR

[0002] Technical Field:

[0003] The invention relates to a novel A.C generator with more electricity from same input mechanical energy of prime movers of wind, thermal, hydroelectricity, vehicles etc to reduce global warming for sustainable world.

[0004] State of Art:

[0005] A.C Generator proper has not been changed for past 100 years. It has a stator core with insulated copper coils and a rotor with permanent or electric magnets with temporary magnetism induced in steel bars. The rotor weight is huge and torque needed to rotate is large. The rotor is run by pulleys or gears by a mechanical energy after coupling to steam, hydro-electric, thermal power plant or wind turbines. The input energy rotating weighty rotor is large. World needs more electrical energy for growing human population, industries, transport or economic centres, farming etc. No research into redesign for a better lean, lower input energy generators has happened by electric generating companies, universities, etc., Magnetic materials, electricity control electronics are changing fast. A new generator with more electricity from same old turbines run by thermal, hydroelectric dams, winds can reduce need of new electricity generation plants, give lower cost electricity, better environment for all nations. The stators has laminated electrical steel stampings stacked with coils wound for single or three phase A.C creation. The rotor has a pulley or gears on the rotor shaft connected to turbines drive shaft. The rotor proper is usually aluminium, non-magnetic steel drum with permanent magnets or electro magnets with direct current feeding slip rings. The laws of magnetism induced electricity determine voltage amperage, frequency of electricity generation by steady constant rate rotating turbines. There is heat generation in stator coils by opposing magnetic electric induction by atoms that want to be in neutral force under rotating magnetic flux of rotors. Generators comes in few watts to MW sizes. Alternators in vehicles, ships planes use energy from ICE engines or aircraft jet engines for lights, communication, air conditioning comforts.

[0006] Technical Problem

[0007] The defects in the existing generators in use are:

[0008] 1. Huge cost, size of generators.

[0009] 2. Magnetism spread in stators to induce electricity induction in its coils is not best.

[0010] 3. Rotor magnetic flux and magnet quality, its RPM determine magnetic flux spread and induction into stator steel sheets and copper or aluminium current coils.

[0011] 4. Input fossil fuel thermal, steam turbines, dams wind mills are inefficient and larger than needed.

[0012] 5. Efficient generator must have maximal magnetic flux rotation with correct input mechanical torque and perfect efficient electrical induction in current coils.

[0013] Some facts on magnetism & electric induction are needed. 1. A single North or South magnetic pole in any matter has not been found. Always a North Pole & south pole both of same strength but different direction is the rule in all magnets. If a magnetic north pole in any magnet, a similar opposite force is there on opposite direction. Why not use 2 poles simultaneously for electricity induction.2. Bar magnets, horse shoe magnets, plate magnets may not be the best for rotors.3. Real speed of magnetism is same as light- huge. 4 In any magnetic material magnetic flux lines always travel inside its body escape on edges and its ends. Smooth rounds don’t leak flux lines. 5. Rapid on / off magnetism activates coil atoms creating heat in copper, aluminium and magnetic steel needing cooling.6 North pole inducts a up voltage, south pole down voltage- component of A.C current. A.C current is better- volt, phase, amperage, frequency changeable by existing technology. These helped to invent a new generator: Problem

[0014] In creating, inventing a new more efficient A.C generator, the decades old non- obvious facts from early generators, we analysed their weakness & flaws in engineering for months. How and why rotors and stators of all existing generators can’t be better? Huge generator producing companies with vast men & huge engineering capacity weakness for no improvement was also studied. We have created a new, novel A.C generator with many inventive steps & structured a new generator efficiency. Our inventive tricks, steps we used in our new generators are:

[0015] 1. Using both North & South Poles sequentially for A.C wave induction.

[0016] 2. Magnetic flux can be increased by increasing magnetic dense powerful magnets like Neodymium with rare elements, ferrite etc. or stronger electromagnets.

[0017] 3. Planning number of magnets, rpm in rotor, coils of number of turns, wire gauge of insulated copper or aluminium wires around electrical sheet laminates.

[0018] 4. Both sides of stator windings forming 20-30% of copper weight doesn’t have magnetic induction- wasted volume. Rotor magnets length are limited to stator core length in existing generators- doesn’t cover stator side coils 1.

[0019] 5. An electronic control to sense voltage, frequency of generated current , modify with output for needed voltage, amperage, phase and frequency

[0020] The inventive step in our new generator are:

[0021] 1. We use a new novel U profile linear long permanent magnets with two limbs of U as North & South poles.

[0022] 2. U Magnets throws a concentrated flux into stator laminates for maximal flux into copper coils for maximal electricity generation. The U magnets has round body to prevent magnetic flux leaks and helps to concentrate and direct flux escape from two North & South arms free edges only. 3. The U magnets are fixed in novel nonmagnetic housing box and this box with U magnet is welded or fixed by screws to two rotor side plates already attached to rotor shaft. Longer U magnets now in new rotor extends to side copper coil over hangs.

[0023] 4. A new non-magnetic magnetiser plates laden with radial magnetisable pads faces the two stator side overhanging copper coils for more electricity induction now!

[0024] 5. Stator laminated stampings are novel, new shorter with rotor curved edge, a short neck, a body ending with two separating tails. This stamping receives magnetic flux from our new rotor U magnets and send magnetic flux into copper coils for maximal electricity induction.

[0025] 6. Stator nonmagnetic body of aluminium / nonmagnetic steel has novel inner multiple cavities to hold firmly new novel different shaped stator stampings forming a ring of needed core with needed wound insulated coils for phase, volt, and amperage induction for use.

[0026] 7. The generator body has mounting pads, fans and an electronic control for volt, phase amperage output leads and a display for control, settings, output and diagnostics.

[0027] 8. Ours differs from existing generators in structure, function and electricity output, needed many experiments, new created parts, assembly- not possible by studying prior patents, jugglery of old generator parts.

[0028] 9. Magnetics and induction in coils is improved & vastly different:

[0029] • .U profile north & south separated arm poles of permanent / electromagnets gives two same strength opposite alternate current electricity in rotation in coils.

[0030] • U profile has least body flux leak & maximal North & South ridges send out concentrated flux.

[0031] • Stator smaller laminated stampings with two tails, ridges in body edges makes concentrated magnetic flux directed into wound stator coils instead of passing through as in smooth body side of existing laminator core.

[0032] • Ridges on stampings mid body leaks more flux into stator wound insulated coils for more electricity induction.

[0033] • Cooler fan / liquid / hydrogen of small / medium / large generator coils helps in manageable stator temperature with more electricity.

[0034] • Motor rotors need huge mass (weight) to turn machinery. Our new AC generator is no mass magnetic flux spreader-only magnets weight alone is needed- saves material mass, weight and input torque. Time to differentiate motors & generator as specialist unique different use machines. This is an inventive step. Industry has to change motor, generator difference.

[0035] Why our generator has more electricity with lower input energy need? The lower weight in our rotor with firmly fixed magnets in circumference of rotor side plates only and empty space rotor space below magnets - but solid non-magnetic material metal fills rotor in existing generators a wasted weight!

[0036] For same weight we can load more magnets, or for same electricity we can use fewer only magnets-an inventive step too. For same thermal, wind / steam input prime mover we can make smaller rotors and stators or for same input energy but more electricity bigger rotor, stators for cheaper electricity. Rotor weight reduction and more magnetic flux is inventive step too.

[0037] Accordingly the object of the invention is to identify the solutions for problem associated with more efficient AC generator with lower cost of long use. This an investment for lower polluting energy for long years of use. An extensive search has been carried out using the Internet and related patent specifications were studied for rotors with long U profile magnets, magnetic flux better flows into stator from rotor, stator side overhanging coil electricity production. Since the present invention is radically different, in using the new U profile longer magnets inducing electricity in side over hanging coils, rotor weight reduction with maximal magnetic flux the inventors are unable to site any patent specification out of the available databases. Search of the USPTO, European patent offices, others, known literature, the generator companies’ literature do not reveal low mass rotor, side coil induction like ours. We are not able to cite prior art generator with novel stator with smaller stampings, side coil overhang induction, rotor with U magnets of related structure with lower mass and hollow rotors structure or function in Toto. Old generators with more mass solid rotors, no side coil magnetisers and short magnets aren’t priority. A mosaic of old patents can’t create low mass rotor, long U magnets in non-magnetic boxes and side magnetisers & non-obvious.

[0038] Summary of the invention:

[0039] New generator has a body with end shields with ball bearings of needed type size for rotor weight and its shaft diameter. The stator body has an aluminium / non- magnetics or plastics like ABS etc. Stator body has radially disposed cavities to fix and hold electrical laminated steel stampings stacks in circumference for needed number of coils & size. The rotor shaft has outside pulley or gears run by wind, water, steam turbines drive shaft in steady RPM. The rotor shaft has a fan to cool stator coils. The non-magnetic rotor end plates have inside series of U profile long linear magnets fixed & fitted in a magnet housing box comprising of outer surface shape of U magnet and in between two arms of U magnet an inner support insert bar to hold U magnets in rotation for decades. . A stator side overhanging coils magnetiser plate comprising of a nonmagnetic sheet with inside magnetisable pads arranged radially to direct magnetic flux into side overhanging coil for added electricity now! . This coil facing side magnetiser pad has ridges to send magnetic flux into side coils for more electric induction. The rotor U magnet is longer than conventional existing generators extending from one side magnetiser, the stator and to the other side magnetiser inducing electricity in two side coil overhangs and also main stator part. In electromagnets generator model a slip ring feeds outside DC current to electrical magnet coil wound on U profile electromagnet arms fixed to rotor shaft end plates. As the rotor shaft rotates the North and South poles induces A.C electricity in stator coils including both side overhangs for more electricity. Rotor weight is lesser in our generator needing lower input energy. The amount of stator electrical steel laminates is also lesser in our smaller stampings. The electrical steel stator stampings have holes with air cooling tube and bolts for stable long years of electricity production. As rotor is rotated, the series of U magnets induce A.C electricity in two side overhanging and main body of copper coils. An electronic control gives needed frequency, volt and amperage A.C electricity. More electricity for same input mechanical energy reduces electricity cost, reduces pollution too.

[0040] Statement of Drawings:

[0041] These and other objects and features of the invention will become more apparent upon perusal of following description taken in conjunction with accompanying drawings wherein:

[0042] Figure 1 shows the details of new A C generator.

[0043] Fig 2 shows the new U profde linear long magnet.

[0044] Fig 3 shows U magnet rotor fixing holder box.

[0045] Fig 4 shows U magnet support insert bar between the two U magnet arms.

[0046] Fig 5 shows assembly of U magnet in holder box with inside bar.

[0047] Fig 6 shows rotor assembly of magnets in its holder box fitted in rotor side plates.

[0048] Fig 7 shows alternate rotor U magnets fixing plastic mould for small generators. Fig 8 shows rotor assembly for electro-magnets U type rotor with slip rings. Fig 9 shows one stator coil electrical steel stamping.

[0049] Fig 10 shows stack of stampings for coil winding.

[0050] Fig 11 shows stator side over hanging coil magnetiser pad.

[0051] Fig 12 shows side overhanging magnetiser plate with many magnetisers pads assembled.

[0052] Fig 13 shows stator body with radial cavities for stator electrical steel stampings stacks.

[0053] Fig 14 shows stator cross section with stacks of stampings assembled.

[0054] Fig 15 shows stator with copper wire coils wound on stampings stacks. Fgl6 shows electricity induction in stampings as North & South Pole rotates for A.C current

[0055] Fig 17 shows old existing generator parts.

[0056] DESCRIPTION OF PREFERRED EMBODIMENTS

[0057] The following specification describes salient features of invention, the method of construction, the method of use and the advantages of the novel invention.

[0058] The novel device is a novel alternating current generator. The existing generators Fig 17 have not been improved for long. The stator side coilsl9 forming 10-30% of total copper wire coil have no magnetic induction-wasted cost. Rotor magnet is as wide as stator stampings only- not into side overhang coils. Stator body 1 uses more electrical steel, the magnetic flux from rotor2 magnets enters stampings spreads into stator body stampings. Only a small part of magnetic flux is directed into coils during the fast magnetic flux travel. Speed of magnetism is same as light! The object of the invention is to overcome the inherent defects of existing generators of creating more electricity for energy hungry humanity with less input energy from thermal, dam, wind turbines. To this end the new invention is addressed. Our A.C generator, is better, easy to use, maintain, saving money, materials, environment too. Ours is not a shop floor improvement but needed a long research on generator modifications from flat magnetic rotor bars, wasted side overhanging stator coils, laminator stator sheet stampings- all were studied, changed and solved. It is non- obvious, with new inventive steps as described and listed before clearly and new as all energy & generator companies in most countries didn’t solve this for long felt need for huge energy needs. We are the first to say generator rotor can be hollow, lower weight of magnets alone!

[0059] The device is novel for reducing the energy costs, maximising more energy from same input mechanical input as in thermal, steam, hydro, wind generators, ICE engines used in all vehicles, ships, airplanes and electric power plants. For clarity of diagrams we have shown fewer stator coils, rotor stator air gap and side magnetiser plate to stator sides.

[0060] The novel generator according to invention is better because it has new novel inventive steps with alteration in parts, structure, position and function for new more electricity production:

[0061] 1. U profile long permanent / or electromagnets to cover also stator side overhanging part of copper coils.

[0062] 2. Arranging U magnets in non-magnetic fixing holders, fixing many magnets between rotor side plates.

[0063] 3. New stator electric sheet stampings with curved rotor side, a neck, body with two separating tails and inside holes for more magnetic flux to spread into copper coils.

[0064] 4. Stacks of novel stampings for assembly.

[0065] 5. A stator with nonmagnetic body with radial multiple stamping stacks cavities.

[0066] 6. Magnetiser pads radially arranged in a circular plate for two stator side coil overhangs.

[0067] 7. Electronic control for needed AC output frequency, volt, phase & amperage with display& input keys!

[0068] Our new A.C generator Fig 1 comprises a body with a stator 1, rotor, and electrical electronic controls24. It has end plates 28 with ball bearings27 for rotor shaft, A.C output leads 23 deliver current. Side overhanging coils 19 has a magnetiser plate 18 with radially arranged coil facing magnetiser pads 16. The rotor magnets 3 extends to from one side magnetiser to other magnetiser to create magnetic A.C induction in side coils and stator main core coils- full induction in coil all sides- new, novel and new inventive step too. A fan 22 cools the stator.

[0069] The rotor comprises a rotor shaft, its U profile linear magnets 3 in its box fixed between two end side plates2. The rotor has many U profiled linear long magnets, 3 Fig 2 with a North 4 and South4 arms. The magnet has smooth rounded borders to prevent flux leak. The North, South symbols can be included in magnet body and top of north and south arms as illustrated for correct fixing in rotor. The magnet may be of cast neodymium, ferrite, etc. The magnets in north and south edge may have ridges, grooves to focus magnetic flux rays on to stator. The magnet body has round body minimising flux leaks and maximal flux in arms.

[0070] The magnet is placed in same shape fitting holder box as in Fig 3. The magnet holder box has a side body 5 covering & fitting inside is a U magnet with open top. End sides 6 cover protects the ends of magnets. The holder box is made is of nonmagnetic material to prevent magnetic flux leak in sides and open top allows both North & South arms to radiate flux in a narrow concentrated beam on to stator for maximal electricity induction. .A central non- magnetic material aluminium, nonmagnetic stainless steel or plastics U magnet support bar 7 in Fig 4 fills the gap between north and south U magnet arms. The needed number of U magnets of desired flux are cast and made of smooth polished surfaces. Magnets are placed in the magnet holder boxes 5, the central support 7 is placed in the gap between north and south arms and welded or bolted to both box end sides 6. The magnets may be fixed with adhesives in the holder and central support for long years of rotation.

[0071] The magnet holder boxes in Fig 6 is fixed to inside of rotor end plates 2 by welds or bolt nuts, etc. The rotor is not fully solid metal as in existing generators but series of magnets fixed in holder boxes between two side plates. Below and between magnet holder boxes it is empty- less weight too. U magnets assembly is in a circular way forming a rotating North & South Pole series. A fan22 may be fixed to rotor shaft to cool stator & rotor. A pulley 25 on rotor shaft end outside body of generator rotates rotor if connected to wind, thermal, dam etc. turbines drive shafts for need RPM, volt, frequency, phase.

[0072] The stator is a different from existing generators. The laminated electrical stampings are new & of different shape Fig9. The stampings 11 has a curved central edge 12 facing rotor magnets and is the entry point of rotor magnet’s flux. There is a short neck (not numbered), a body with ridges29 on body sides and two tails diverging as arcs 13. The tails 13 has holes 14 for bolts. A rectangular top hole 15 can help for air / liquid cooling tubes (not shown). The stamping rotor facing edge 12 receives the magnetic flux. The stamping body sides are curved for copper / aluminium wire coils winding. The coil sides of stampings may have elevated ridges29 for spreading magnetic flux into copper coils. This new stamping shape is best for magnetic flux to reach sides and bottom of coil instead of straight travelling into body as wasted inefficient flux as in old existing generator larger circular stampings. Two bolts to prevent movement of stamping can be inserted in tail holes 14.

[0073] Stampings are arranged as stacks of needed thickness & number of stampings for stator coil length as needed. Bolts (not shown) can be fitted in tail holes 14. Many stacks of stampings as in figlO of needed length are made. Bolts are not shown. Laminated stampings prevent eddy currents in magnetic flux travel in stampings.

[0074] The stamping stacks are fixed in a stator body21 in Fig 13 comprising of aluminium, non-magnetic steel or plastics. The body is cast as a cylinder with radiating central cavities 11 in Fig 13. The cavity can hold stamping stacks firmly with heat transfer and no magnetic flux leak. The stacked stampings of needed length fixed on bolts are serially inserted as shown in Fig 14. This figure shows six stamping stacks with a central opening for rotor. The insulated copper wire are wound on stator stacks forming the core as in Fig 15 as a ring of needed coils for needed electricity for phase, volt and amperage. Nonmagnetic stator body traps magnetic flux inside the stamping stacks and sends more flux into coils for more electricity-an inventive step.

[0075] A new side overhanging coil magnetiser plate 18 Fig 12 on both sides has inside radially arranged magnetiser electrical steel pads 16. The side stator magnetiser plate 18 is non-magnetic material- plastics / aluminium, nonmagnetic steel etc. The plate serves to hold electrical stamping magnetisers pads 16. This magnetiser pad has coil facing ridged surface 17 as shown in Fig 11 to spread flux into side overhanging coil for additional electricity. It may be made of cast iron. This plate matches the bulge of side coil over hangs. An insulator paper / board may be provided for easy fixing to stator sides. Holes 30 in magnetic plate 18 help to fix the plate on stator side as shown in Fig 1 to fit over side overhang coils. A series of the electrical steel magnetiser pads 16 fixed all round spreads rotating magnetic flux to side coil wires. The U magnets extends to both side magnetiser plates, its magnetic flux induces magnetism in the magnetic magnetiser pads 16 of the non-magnetiser plate. This is an inventive step too. Magnetiser pad’s 16 inside ridges 17 spread flux to side coils faster for more electricity. The other surface of magnetiser plate may be smooth to reduce flux leaks. Centre of magnetiser plate is cut out for rotor magnet rotation.

[0076] Fig 16 shows the flux, from magnet North, South arms it flows into stampings, then into copper wires forming an A.C wave as North, then south arms rotates. This repeats for continuous A.C .current. In electro magnets Fig8, slip rings 9 through wires 10 fed DC current into the coils on the body of U magnets wound on both arms. The D.C current magnetises U electro-magnets & forms north & south poles. As the rotor rotates this electromagnet creates a rotating flux into stator coils for A.C current. Rotor end plates are not shown for clarity. Huge electro magnet rotors can have huge side plates with locking slots for U electro magnets with a nonmagnetic cover on all sides except magnetic flux radiating U arm edges. Even for large generators our U magnets mounted in appropriate rotor side plates will have lower weights needing lower input prime mover turbine driveshaft energy. Electromagnet has nonmagnetic cover on sides& ends with open top exposing both arms for magnetic fins to enter the stator. Input DC wires are led inside by holes in nonmagnetic holder box. Rotor in electromagnets needs fan, air / liquid cooling. Magnet holding box can have air / liquid entry & outlet for magnet cooling. The assembly is simple. Make stator stampings, assemble series of sets with bolts in tail holes 14. Fit these sets in the stator body 21 cavities by hydraulic press fig 14. Wind the insulated copper wires on to stator coils for needed current phase, voltage in stator core Fig 16. .Fit two side overhang magnetisers 18 by screwing to shaft body using holes30 of magnetiser plate on both sides. Cast permanent U magnets 3 and fix in magnet holder box 5, .place inner arm support bar7.Weld / fix magnet holders to rotor side plates2 near circumference. Fit rotor in assembled stator with side magnetisers, assembly Fix fan 22. Connect stator wires to electronic controls 24 and then electrical outlets 23. Fix bearings in generator end shields 26 and clamp end shield to stator body with inside rotor as in Fig 1.Fix pulley to rotor shaft. The rotor shaft outside generator pulley25 / gears to connect to prime mover drive shaft of thermal, steam, dam, windmill, or ICE vehicle engines. The rotating generator gives more electricity for same input energy. For Electromagnets model connect slip rings to outside DC source. The generator body has separate DC current input leads in a box attached to generator body.

[0077] The generator can be made for watts. Kw, MW sizes. The magnetic flux, poles, coils, stator stamping, body, rotor magnets holders, side plates, rotor shaft, its bearings, coil turns, phases are standard formula derived data to design, make, assemble. Fan, liquid, hydrogen cooling for MW sizes can be used as needed.

[0078] The stator bodyl, side magnetiser plate 18 alone, magnet holder box 5, between U arms support 7 are made of nonmagnetic metals like aluminium, nonmagnetic steel or plastics in small generators. The magnet permanent type or electro magnet U arms, stator stampings, magnetiser pads 16 alone are magnetic materials in generator. Magnetic materials flux rotating in electrical steel in a non-magnetic stator body is more electricity induction efficiency.

[0079] The device can be modified for different sizes, wattage, voltage, frequency. In huge MW size cast iron stampings can be used fitting in nonmagnetic steel body with needed cooling. Electronic display with input touch keypad can be used. Shape of final generator may be different for looks. The generator end shields can have air flow cooling holes not shown in our figures. Ball bearings of different size, types can be used for that generator rotor shaft diameter size fit, The Side magnetiser plate pads may be same as stamping stack numbers or different. Stator nonmagnetic body cylinder can be cast a one or more pieces and bolted. Stator stampings in huge watt ranges can be made of blocks of magnetisable steel. Rotor end plates size, thickness varies with magnets length and weights for years of continuous electricity production. Copper insulated wires gauge, turns vary with needed phase, volt amperage of generator desired. V profile long magnets can be used, but arms ends must have a short straight edges to spread magnetic flux. Casting, polishing V is trickier.

[0080] Electronic controls for temperature, rpm, electricity volt, phase, amp produced, stop / start, etc., give needed phase, volt, amperage output. Single or three phase coils can be used as needed in stator. Small generators can have single phase, larger generators three phase coils. Super high voltage coils in high RPM rotor speeds can be modified by variable frequency drives VFD, voltage regulators, rectifiers for needed A.C or DC electricity. Three phase coils, details of electronic controls are known data to plan needed generator.

[0081] New A.C generator inventive step parts of 1. U profile long permanent or electromagnets 2. U magnet nonmagnetic fixing boxes with central between U arms support bar.3 rotor side plates many holding boxes with inside U magnets fixed 4. Stator stampings with curved central edge, body with ridges, tail with holes.5 stator nonmagnetic body with stamping cavities 6 side overhang coil magnetiser pads arranged in nonmagnetic plates 7 electronic controls- all can be modified for looks, size, materials and fit for efficiency in cost, energy output, long years of use.

[0082] The present invention can be modified in various embodiments, and the scope of the invention is not limited to the above-described embodiments. Thus, if the modified embodiment includes the structural elements of the claimed scope of the invention, it should be considered as falling within the scope of the claims of the present invention.

[0083] Advantages of the new invention:

[0084] 1. New A.C generator gives more electrical energy for existing same input energy.

[0085] 2. The rotor is efficient with novel U profile long magnets fixed between rotor side plates.

[0086] 3. The long magnets are fixed in a non-magnetic holder with inner support bar between U arms for safe use for years of rotation and no leak more magnetic flux for stator coils.

[0087] 4. Stator stampings are more magnetic flux spreaders into coil for more electricity induction.

[0088] 5. Stator coil stampings are fixed in stator body made of aluminium / nonmagnetic steel or non-metallic plastics in small generators for more flux into coils for more electricity.

[0089] 6. New side overhanging coil magnetiser pads induces more electricity in coil overhangs.

[0090] 7. U magnets of rotor are longer-between two stator side coils magnetiser plates including middle stator coils.

[0091] 8. Electronic controls give diagnostics, performance of generator, output A.C current.

[0092] 9. Rotor has more magnetic flux load than old generators with lesser weight now.

[0093] 10. Stator is modified for more dense magnetic induction and then directed into copper coils for more electricity

[0094] 11. Our A.C generator is a boon for humanity with more energy, better environment.

Claims

We Claim:

1. The Alternating current generator comprising:(a) U profile long linear magnets (3)with North and South arms(4) with smooth rounded edges, extending from side overhang coils, stator core to other side overhanging coil,(b) a non-magnetic material U magnet holder box (5) covering magnet sides and its two ends(6) with free open North & South arm edges, a U magnet arms support bar(7) fitted in between North & South magnet arms, fitted to both ends(6) of holder box,(c) rotor having multiple holder boxes(5) with inside fixed U profile long magnets(3) fitted between rotor end plates(2) for rotating magnetic flux,(d) a stator comprising a non-magnetic body(21) mould with inside cavities(l l) for laminated stator magnetisable stampings stacks as the core,(e) stator stampings (11) compromising a central curved edge(12), a neck, body with two diverging tails( 13), the body and tail having holes(14)(f) coils of needed gauge and turns of insulated copper wires(26) wound around stator core stampings stacks(l 1) fitted in stator body(21),(g) stator side overhanging coil non-magnetic magnetiser plate(18) with multiple magnetiser pads(16) for side coil electricity induction(h) electrical and electronic control(24) for needed phase, frequency, volt amperes of output A.C current with diagnostics, display& touch pads(i) a fan on rotor shaft(22),(j) generator end shields (28) with ball bearing (27) fitting for rotor shaft,(k) Power outlets (23) connected to electronic control 24 circuit.

2. Alternating current generator as claimed in claim 1, wherein the U profile long linear magnets (3) have smooth low magnetic leak body, a North & South arms (4) with free arm edges having ridges for spreading out concentrated magnetic flux, a lettering indicating North & South in its arms,the length of magnet is distance of both stator overhanging coils side edges for induction of stator coil and its two side overhang coil part.

3. Alternating current generator as claimed in claim 1, wherein U magnet fixing holder box has a body with sides(5) , ends(6), the box’s inside cavity fits the U magnet with only free North & south arm pole exposed.

4. Alternating current generator as claimed in claim 1, wherein the stator electrical steel stampings(l l) has a curved central edge(12), a neck, a body with ridges(29) for spreading magnetic flux into coils, the body diverging into two tails (13), the tails having a bolt fitting hole(14), a body hole(15) for cooling.

5. Alternating current generator as claimed in claim 1, wherein the stator is a cylinder cast body of non-magnetic body (21) with series of radially arranged centre facing stamping stack cavities (11).

6. Alternating current generator as claimed in claim 1, wherein a nonmagnetic plate(18) with coil facing surface having multiple radially arranged magnetiser pads(16), a series of air flowing hole(20), the plate having screw holes( 30) to fit on stator sides such that magnetic pads radiate magnetic flux into side overhanging coil(19).

7. Alternating current generator as claimed in claim 1, wherein an electronic control (24)with display, touch key pad for needed phase, frequency, volt amperage for electricity, diagnostics feeds the needed A.C current to output terminals (23).

8. Alternating current generator as claimed in cl wherein the electromagnet model the rotor shaft has DC current slip rings (9), wires (10) connected tocoils wound on U arms of all magnets 3 assembled in rotor endplates around the rotor shaft.

9. Alternating current generator as claimed in claim 1, the magnet U arms in the holding box 5 has a nonmagnetic central support bar (7) to fix the magnet centre in the holder box.

10. Alternating current generator as claimed in claim 1, wherein the magnetiser pad (16) made of magnetisable steel has a narrower centre edge,, a body curved to fit over stator side overhang coil, magnetic flux spreading ridges(17) in coil facing side, a smooth side on its other side,

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