WO2006108105A2

WO2006108105A2 - Electrical machine with segmented claw poles

Info

Publication number: WO2006108105A2
Application number: PCT/US2006/012884
Authority: WO
Inventors: Yukio Kinoshita
Original assignee: Inoki, Kanji; International Natural Power Institute Of Technology Co., Ltd.
Priority date: 2005-04-06
Filing date: 2006-04-06
Publication date: 2006-10-12
Also published as: WO2006108105A3; JP2006296001A

Abstract

Stator of a rotary electrical machine made of three axially adjacent stator segments (4) . Each stator segment comprises a ring coil (7) with claw poles. The claw poles consist of blocks (32,33,34) forming poles and yoke. The blocks (32,33,34) are held by respective openings (A) of a ring-shaped plastic frame (31) .

Description

Rotary Machinery and Magnetic Device

FIELD OF THE INVENTION

[0001] This invention relates to a rotary machinery and a magnetic device, in which the rotary machinery uses a combination of multiple DC and AC magnets made up with the bobbin type windings and a magnetic iron core to be widely used not only in the field of small sized devices but also in the field of large-sized devices.

BACKGROUND OF THE INVENTION

[0002] Generally, distributed winding is used to provide magnetic coupling for a stator of a motor or a power generator of conventional technology, hi addition, the windings are harnessed in the wire insertion slot provided in the stacked electromagnetic steel plate. The works after harnessing such as connection, shaping, fixing of the end coil, and the like are extremely complex and elaborate with poor workability and a long process time. As a result, when the rotary machinery or electromagnetic device is in use, dielectric breakdown due to scratches and the like generated during operation results in poor reliability; windings entangle or interfere with each other or with a narrow slot; the slot occupancy rate which is used so as to improve workability of the harnessing operation (usually less than 50%) becomes poor; an extension of the extra end coil increases manufacturing costs; and an increase in resistance loss of the end coil section, an increase in magnetic flux leakage and the like decreases efficiency and output and the like.

Moreover, the production of the rotary machinery and magnetic devices is difficult to automate, and the implementation of automation accompanies large equipment costs. Furthermore, low voltage devices or medium and large-sized devices have larger winding diameters which aggravate workability and increase manufacturing costs significantly. [0003] When the number of poles is changed in a conventional structure, the type of windings is changed; however, usually, the number of poles is limited to eight except for the case that the outer diameter of an iron core is specially enlarged.

[0004] In the case of a magnetic type electric motor or a power generator, output adjustment, startup torque adjustment, and efficiency enhancement are mainly achieved by adjusting the windings and the intensity of the fixed type magnet of the rotor. Generally, their iron cores are integrated into a laminated layer and are never made by the division method. [0005] Moreover, for the electrical machinery with an ordinary iron core coil structure for the use in super-high temperature environment, the sum of the environmental temperature and the value of an increase in temperature of the coil is limited to 250 degrees.

[0006] Conventional rotary machinery has an extremely low efficiency at a low speed and a low output, and the efficiency of the magnet type rotary machinery is generally 20 to 30%. [0007] hi Japanese Published Application No. 2000-324768, a stator of a power generator or an electric motor is constructed with a bobbin type electromagnet, and a rotor has a magnetic pole structure in which, in a magnetic pole iron core using a magnet or an electromagnet and their combination, the magnetic pole facing the gap between a stator and a rotor has a parallelogram shape and, at the same time, the center of a magnetic pole is circumferentially or linearly affected to provide the skew effect and the like to either the stator or the rotor alone, or both the stator and the rotor.

SUMMARY OF THE INVENTION

[0008] The objectives to be achieved by the present invention are to simplify the winding and the structures of rotary machines and electromagnetic devices, and to actualize a multifunction electric device. By simplifying the winding and the structures of a stator core or a rotor in AC generators and electric motors, simplification of the iron core structure, configuration, material quality, and winding structure is achieved, and the composite structure applicable to small scale, multi-type, or large scale productions is actualized and, what is more, a wide range of small to large rotary devices are commercialized.

[0009] In order to simplify the winding structure of a stator or a rotor of rotary machinery, the iron core's structure, configuration, material quality, and winding structure may be simplified. For example, there is a concentrated winding structure such as the bobbin type winding to form magnetic fields in the magnetic pole iron core section. In this structure, magnetic fields lose only a little electric current; this iron core takes workability into account; and the iron core is made of a combination of a single or multiple types of materials: an iron type sintered material, a laminated electromagnetic steel plate-made iron core, and an insulated iron wires and insulated iron powder.

The present invention provides a rotary machines and an electromagnetic device with a structure that secures actualization of these objectives.

[0010] The first invention is a rotary machine characterized by the fact that, in a stator made by combining multiple DC or AC electromagnets made of magnetic iron cores and the bobbin type windings, the stator comprises a bar type magnetic iron core to be electromagnetically coupled through windings, a magnetic path formation iron core (the side wall or the auxiliary yoke section), a magnetic iron core holding plate, a winding body, and a partition plate for each phase; wherein the magnetic iron core and the magnetic path formation core are in the form of blocks made by one type or a combination of two or more types of materials selected from iron type sintered materials, laminated electromagnetic steel plates, insulation coated iron wires, and insulation coated iron powder; the magnetic iron core having electromagnetic coupling is formed as the edge of the bar-type magnetic pole iron core contacts or fits the hole on the side plates; the stator has the magnetic path-magnetic pole configuration in which the magnetic pole section (pole piece section) facing the rotor has an approximate parallelogram. [0011] The second invention is characterized by the fact that, in the first invention, magnetic path formation iron core A is provided on the outer circumference of said magnetic path formation iron core (the side wall or the auxiliary yoke area), and the length of the magnetic path- magnetic pole structure is reduced in the direction of the axis or the circumference. [0012] The third invention is characterized by the fact that, in the first invention, a cylindrical ( arc) ring, which is made of magnetic members, non-magnetic members, or a combination of magnetic members or non-magnetic members to hold the bar type magnetic pole iron core, is provided on the inner circumference of the magnetic path section of said magnetic pole iron core to smooth the magnetic fields in a gap, thereby eliminating cogging and improving the property of the rotary machinery.

[0013] The fourth invention is characterized by the fact that, in the first invention, an arc magnetic field adjustment ring, which is made of the iron type sintered material, the electromagnetic steel plate, or linear laminated material, is provided on the entire or a part of the inner periphery of the inner circumference of the magnetic path section in said magnetic pole iron core to smooth the magnetic fields in gaps, thereby improving the property [of the rotary machinery] .

[0014] The fifth invention is characterized by the fact that, in the first invention, an arc magnetic field adjustment ring, which is made of the iron type sintered material or the electromagnetic steel plate, is provided on the entire or a part along the axis of the outer periphery of the rotor to smooth the magnetic fields in gaps, thereby eliminating cogging and improving the property of the rotary machinery.

[0015] The sixth invention is characterized by the fact that, in the first invention, a cylindrical magnetic field adjustment ring which is made of the iron type sintered material or the electromagnetic steel plate is provided on the entire or a part of the outer periphery of the rotor via a non-magnetic member to smooth the magnetic fields in gaps, thereby eliminating cogging and improving the property of the stator.

[0016] The seventh invention is characterized by the fact that, the fourth invention to the sixth invention are combined to further smooth the magnetic fields in gaps, thereby eliminating cogging and improving the property of the stator.

[0017] The eighth invention is characterized by the fact that, in the first invention, when it is used for multiphase machines, the magnetic pole displacement angle for each adjacent phase is set to be (l~2) * 360 / pole number * phase number (degree) to enable the multiphase machinery to optimize its magnetic property without a phase adjustment device, and to provide magnetic fields of each phase in the rotary machinery with a unique characteristic.

[0018] The ninth invention is characterized by the fact that, in the above-mentioned rotary machinery, the magnetic pole iron core having electromagnetic coupling is formed in a bar-shape; the magnetic pole iron core's magnetic pole section (the pole piece section) facing the rotor has an approximate parallelogram shape; provided is a support frame with a wide angled hole to communicate and to securely hold the shape of said magnetic pole section (the pole piece section); and the surface of the magnetic pole in a gap is enlarged continuously to assemble the magnetic iron core.

[0019] The tenth invention is characterized by the fact that, in the multiphase rotary machine, a magnetic pole iron core having electromagnetic coupling has a bar shape; and the magnetic pole iron core's magnetic pole section (the pole piece section) facing the rotor has an approximate parallelogram shape, the shape of said magnetic pole section (the pole piece section) is securely held in such a way that the adjacent phase is pushed out from each other, and the rotary magnetic fields are formed smoothly.

[0020] The eleventh invention is characterized by the fact that, in the first to tenth invention, the coil material uses the wire made by anodizing the outer skin of aluminum or titanium wire, or by further hardening it with a linking type heat resistant silicone resin.

[0021] The twelfth invention is characterized by the fact that, in the eleventh invention, the slot insulation material uses the material made by anodizing the outer skin of aluminum or titanium material, or by further hardening it with a linking type heat resistant silicone resin.

[0022] The thirteenth invention is characterized by the fact that, the eleventh invention uses a pass-through block to enable a coil-like coolant to pass through.

[0023] The fourteenth invention is characterized by the fact that, in the eleventh invention, the pass-through pipe to enable a coil-like coolant to pass through is juxtaposed with a coil.

[0024] The fifteenth invention is characterized by the fact that, in the eleventh invention, a superconductive material is used for the coil material.

[0025] The sixteenth invention is characterized by the fact that, in the fifteenth invention, the super conductive coil material is replaced with the anodized film-coated aluminum or titanium coil member in the magnet section of the rotor to improve heat resistance, or the super conductive material is used for the coil material to significantly increase the coil capacity, about 15 times.

[0026] The seventeenth invention is characterized by the fact that, in any one of the first to sixteenth invention, the stator has the magnetic path-magnetic pole structure in which the magnetic path formation iron core (the side wall or the auxiliary yoke section) of the magnetic pore iron core to be electromagnetically coupled and the magnetic path formation iron core are laminated with a silicon steel plate and a non-magnetic member with the electric insulation characteristic to adjust magnetic fields of the iron cores, or to prevent occurrence of eddy current when high frequency magnetic fields occur, thereby rendering high performance and high efficiency possible.

[0027] The eighteenth invention is characterized by the fact that it is applied to synchronous rotary machines in which the phase of the current flowing through the coil is controlled so as to change the phase of the rotor magnetic pole, thereby increasing the coil output or controlling phase variations.

[0028] The first invention is a rotary machine characterized by the fact that, in a stator made by combining multiple DC or AC electromagnets made of magnetic iron cores and the bobbin type windings, the stator comprises a bar type magnetic iron core to be electromagnetically coupled through windings, a magnetic path formation iron core (the side wall or the auxiliary yoke section), a magnetic iron core holding plate, a winding body, and a partition plate for each phase; wherein the magnetic iron core and the magnetic path formation core are in the form of blocks made by one type or a combination of two or more types of materials selected from iron type sintered materials, laminated electromagnetic steel plates, insulation coated iron wires, and insulation coated iron powder; the magnetic iron core having electromagnetic coupling is formed as the edge of the bar-type magnetic pole iron core contacts or fits the hole on the side plates; the stator has the magnetic path-magnetic pole configuration in which the magnetic pole section (pole piece section) facing the rotor has an approximate parallelogram; and blocks which are facing each other are assembled in a square configuration forming a closed magnetic path. The above structure allows a building block for each phase to form, and provides a structure for magnetic paths and magnetic poles.

As a result, the magnetic force of the magnetic pole iron core having electromagnetic coupling is secured and, at the same time, productivity of coil manufacturing such as processability, assembly workability and the like can be enhanced.

[0029] The second invention is characterized by the fact that, in the first invention, magnetic path formation iron core A is provided on the outer circumference of said magnetic path formation iron core (the side wall or the auxiliary yoke area), and the length of the magnetic path- magnetic pole structure is reduced in the direction of the axis or the circumference. As a result, the magnetic force of the magnetic pole iron core having electromagnetic coupling is secured and, at the same time, productivity of coil manufacturing such as processability, assembly workability and the like can be enhanced.

[0030] The third invention is characterized by the fact that, in the first invention, a cylindrical (arc) ring, which is made of magnetic members, non-magnetic members, or a combination of magnetic members or non-magnetic members to hold the bar type magnetic pole iron core, is provided on the inner circumference of the magnetic path section of said magnetic pole iron core to smooth the magnetic fields in a gap, thereby eliminating cogging and improving the property of the rotary machinery.

[0031] The fourth invention is characterized by the fact that, in the first invention, an arc magnetic field adjustment ring, which is made of the iron type sintered material, the electromagnetic steel plate, or linear laminated material, is provided on the entire or a part of the inner periphery of the inner circumference of the magnetic path section in said magnetic pole iron core to smooth the magnetic fields in gaps, thereby improving the property of the rotary machinery.

[0032] The fifth invention is characterized by the fact that, in the first invention, an arc magnetic field adjustment ring, which is made of the iron type sintered material or the electromagnetic steel plate, is provided on the entire or a part along the axis of the outer periphery of the rotor to smooth the magnetic fields in gaps, thereby eliminating cogging and improving the property of the rotary machinery.

[0033] The sixth invention is characterized by the fact that, in the first invention, a cylindrical magnetic field adjustment ring which is made of the iron type sintered material or the electromagnetic steel plate is provided on the entire or a part of the outer periphery of the rotor via a non-magnetic member to smooth the magnetic fields in gaps, thereby eliminating cogging and improving the property of the stator.

[0034] The seventh invention is characterized by the fact that, the fourth invention to the sixth invention are combined to further smooth the magnetic fields in gaps, thereby eliminating cogging and improving the property of the stator.

[0035] The eighth invention is characterized by the fact that, in the first invention, when it is used for multiphase machines, the magnetic pole displacement angle for each adjacent phase is set to be (l~2) * 360 / pole number * phase number (degree) to enable the multiphase machinery to optimize its [magnetic] property without a phase adjustment device, and to provide magnetic fields of each phase in the rotary machinery with a unique characteristic.

[0036] The ninth invention is characterized by the fact that, in the above-mentioned rotary machinery, the magnetic pole iron core having electromagnetic coupling is formed in a bar-shape; the magnetic pole iron core's magnetic pole section (the pole piece section) facing the rotor has an approximate parallelogram shape; provided is a support frame with a wide angled hole to communicate and to securely hold the shape of said magnetic pole section (the pole piece section); and the surface of the magnetic pole in a gap is enlarged continuously to assemble the magnetic iron core. The coil property can be increased by 20 - 30% in this way. [0037] The tenth invention is characterized by the fact that, in the multiphase rotary machine, a magnetic pole iron core having electromagnetic coupling has a bar shape; and the magnetic pole iron core's magnetic pole section (the pole piece section) facing the rotor has an approximate parallelogram shape, the shape of said magnetic pole section (the pole piece section) is securely held in such a way that the adjacent phase is pushed out from each other, and the rotary magnetic fields are formed smoothly.

[0038] The eleventh invention is characterized by the fact that, in the first to tenth invention, the coil material uses the wire made by anodizing the outer skin of aluminum or titanium wire, or by further hardening it with a linking type heat resistant silicone resin. Hence, the heat resistance of a coil can be significantly improved (200 - 300 degree Celsius). [0039] The twelfth invention is characterized by the fact that, in the eleventh invention, the slot insulation material uses the material made by anodizing the outer skin of aluminum or titanium material, or by further hardening it with a linking type heat resistant silicone resin. Hence, the heat resistance of a coil can be significantly improved (200 - 300 degree Celsius). [0040] The thirteenth invention is characterized by the fact that, the eleventh invention uses a pass-through block to enable a coil-like coolant to pass through. Thus, a coil can be cooled effectively.

[0041] The fourteenth invention is characterized by the fact that, in the eleventh invention, the pass-through pipe to enable a coil-like coolant to pass through is juxtaposed with a coil. Thus, the coil section can be cooled effectively.

[0042] The fifteenth invention is characterized by the fact that, in the eleventh invention, a superconductive material is used for the coil material. Thus, a significant increase of machinery capacity becomes possible.

[0043] The sixteenth invention is characterized by the fact that, in the fifteenth invention, the super conductive coil material is replaced with the anodized film-coated aluminum or titanium coil member in the magnet section of the rotor to improve heat resistance, or the super conductive material is used for the coil material. Thus, a significant increase of machinery capacity becomes possible.

[0044] The seventeenth invention is characterized by the fact that, in any one of the first to sixteenth invention, the stator has the magnetic path-magnetic pole structure in which the magnetic path formation iron core (the side wall or the auxiliary yoke section) of the magnetic pore iron core to be electromagnetically coupled and the magnetic path formation iron core are laminated with a silicon steel plate and a non-magnetic member with the electric insulation characteristic to adjust magnetic fields of the iron cores, or to prevent occurrence of eddy current when high frequency magnetic fields occur, thereby rendering high performance and high efficiency of machinery possible.

[0045] The eighteenth invention is characterized by the fact that it is applied to synchronous rotary machines in which the phase of the current flowing through the coil is controlled so as to change the phase of the rotor magnetic pole, thereby increasing the coil output or controlling phase variations.

BRIEF DESCRIPTION OF THE DRAWINGS [0046] Fig. 1 is the rotary machine of the present invention. Fig. 2 is a diagram of the stator of the present invention.

Fig. 3 is another diagram of the stator of the present invention.

Fig. 4 is a diagram corresponding to the side wall magnetic iron core of the stator of the present invention in which number of magnetic poles is changed.

Fig. 5 is another diagram corresponding to the modification of the side wall magnetic iron core of the stator of the present invention.

Fig. 6 is a diagram of the bar-type magnetic iron core holder of the stator of the present invention.

Fig. 7 is a diagram of an insulation material of the present invention where heat resistance of windings and insulation material is improved. Reference Symbols 1, 11: Rotary machineries 2, 21: End bracket

3, 31: Body

4, 41: Stator

5, 51: Rotor

6, 61: Bearing

7, 71: Winding

8, 81: Axis

32, 32A, 32X, 32Y, 32Z: Side wall type magnetic iron core

33, 33a, 33b, 33c, 33d, 33e, 33f: Bar-type magnetic iron core

34, 34a, 34b, 34c, 34d, 34e, 34f: Bar-type magnetic path formation iron core 35: Electric insulation bobbin 37 37 A : Yoke portion connection core

38, 38A, 38B: Magnetic pole holder

39: Side plate

42: Aluminum foil insulation position

73, 73A, 73B: Anodic oxidation film

74: Aluminum wire

75: Copper wire

76: Condenser tube

DETAILED DESCRIPTION OF THE INVENTION

[0047] Rotary machinery 1 of the present invention has a basic configuration, as illustrated in Fig. 1, comprising stator 4 which is made by combining a DC or AC electromagnet and the bobbin type windings and a magnetic iron core; rotor 5 which is used by combining multiple magnets; rotor shaft 8, end bracket 2, shade member 3, and the like. Reference Numeral 6 is a bearing. Fig. Ib shows conventional rotary machinery 11 which comprises frame body 31 equipped with stator 41 wrapped with winding 71 requiring conventional complex electrical work comprising many steps, end bracket 21, rotor 51, and rotor 51 mounted on rotor shaft 81. Reference Numeral 61 is a bearing. The bobbin wound stator of this invention is characterized by the fact that it requires a simple electrical work and short working hours. In addition, it tends not to invite scratches during operation, and its products are highly reliable; the wire utilizing a coil member of a superconductive, or anodized film-coated aluminum or titanium can be introduced, thereby rendering an improvement of heat resistant temperature or coil capacity possible. [0048] Stator 4 using the bobbin type windings of the present invention is shown in Fig. 2a and Fig. 2b. In stator 4 made by combining multiple DC or AC electromagnets made of magnetic iron cores and the bobbin type windings, stator 4 comprises bar-type magnetic iron core 33 to be magnetically coupled through windings, bar-type magnetic path formation iron core (auxiliary yoke portion) 34, side wall magnetic iron cores 32 facing each other on the right and the left, and winding body 7. Moreover, bar-type magnetic iron core 33 and bar-type magnetic path formation iron core (auxiliary yoke portion) 34 are constructed with iron type sintered materials 33a and 34a, laminated silicon steel plates 33b and 34b, insulated iron wires 33c and 34c, and blocks 33d and 34d that are made by insulating and solidifying iron powder.

The magnetic iron core comprises is constructed with "one or two types of bar-type cores 33 and 34 and side wall section core 32 which connect bar-type cores" and has a magnetic path having a square shape.

Moreover, 37 is a yoke section connection core capable of connecting magnetic path formation iron core 33, 34 on the opposite side and bar-type magnetic path formation iron core 34 (yoke section) on the back. Magnetic pole holder 38 holds bar-type iron core 33 in the gap section whereas magnetic pole holder 38 is made of a silicon steel plate or a non-magnetic metal. Bobbin 35 electrically insulates winding 7 from a magnetic path formation iron core, wherein insulated bobbin 35 is made by anodizing the surface of aluminum or titanium metallic coil member to form a film (as required, the surface of the metallic member is subject to a hard alumite treatment with a heat resistant silicone resin) to secure heat resistant characteristics of a rotary machinery. The use of the same insulation film treatment as insulated bobbin 35 for the wire material easily renders the wire heat resistance of 300 degree Celsius or more. [0049] Fig. 3 a, Fig. 3b, and Fig. 3 c depict stator 4 using the bobbin type windings of the present invention.

Fig. 3a is an example of 3-phase bobbin type stator 4 in which the length of each of the bar-type magnetic iron core 33 and the bar-type magnetic path formation iron core (auxiliary yoke part) 34 is set to the 1 -phase width along the axis so as to complete the magnetic path within each phase. In this way, magnetic fields do not leak between adjacent phases, and the simple structure can be assembled with fewer steps.

Fig. 3b depicts 3-phase bobbin type stator 4 constructed with bar-type magnetic iron core 33 and the bar-type magnetic path formation iron core (auxiliary yoke part) 34 for each phase are allowed to comprise lengths: 1-phase widths along the axis 33 and 34 for the length of each phase; and 2-phase widths along the axis of 33a and 34a; this enables magnetic fields in each phase to be pushed out from each other smoothly, and rotary magnetic fields can be smoothed effectively.

Fig. 3c depicts 3-phase bobbin type stator 4 constructed with bar-type magnetic iron core 33 and the bar-type magnetic path formation iron core (auxiliary yoke part) 34 for each phase are allowed to comprise lengths: 1-phase widths along the axis 33 and 34 for the length of each phase; 2-phase widths along the axis of 33a and 34a; and 3-phase widths along the axis of 33b and 34b; this enables magnetic fields in each phase to be pushed out from each other smoothly, and rotary magnetic fields can be smoothed effectively, and what is more, device performance can be improved. This stator is useful for use in a power generator to increase voltage output and reducing current input.

[0050] Fig. 4a, Fig. 4b, Fig. 4c, Fig. 4d and Fig. 4e depict the structure of side wall type magnetic iron core 32 in which the number of magnetic poles can be changed easily; Fig. 4a is a cross section of stator 4 to which this embodiment is applied. Fig. 4b is the 4-pole specific side wall magnetic iron core 32 having an integrated structure. This type is not applicable to any other type but the 4-pole type. A is a hole to which bar-type magnetic path formation iron core (auxiliary yoke section) 34 is inserted; B is a hole to which bar-type magnetic iron core 33 is inserted. Fig. 4c is a schematic diagram of division type iron core 32A in which side wall magnetic iron core 32 is divided into four; Fig. 4d and Fig. 4e show examples of the 4-pole type and the 8-pole type respectively, to which the above division type core 32A is applied. Moreover, by enlarging the outer diameter of the division type iron core 32A, wall magnetic iron core 32 can be made for a machine having more magnetic poles.

[0051] Fig. 5a, Fig. 5b, Fig. 5c, Fig. 5d and Fig. 5e depict the structure of side wall type magnetic iron core 32 in which the number of magnetic poles can be changed easily; Fig. 5a is a cross section of stator 4 to which this embodiment is applied. Fig. 5b is the 4-pole specific side wall magnetic iron core 32 having an integrated structure. This type is not applicable to any other type but the 4-pole type. A is a hole to which bar-type magnetic path formation iron core (auxiliary yoke section) 34 is inserted; B is a hole to which bar-type magnetic iron core 33 is inserted. Fig. 5c is a configuration drawing of three types of division-type iron cores 32X, 32Y, and 32Z made by dividing the side wall magnetic iron core 32 into 12 divisions. Fig. 5d and Fig. 4e each shows the case in which the division type iron cores are applied to 2-pole type and 12-pole type respectively. Furthermore, the enlargement of the outer diameter can produce side wall magnetic pole iron core 32 with many more poles.

[0052] Fig. 6a, Fig. 6b, Fig. 6c, Fig. 6d and Fig. 6e depict the structure of yoke section connection iron core 37 and magnetic pole holder 38 which holds and connects bar type magnetic pole cores 33 and 34 with the yoke section. Fig. 6a is a cross section of stator 4 to which this embodiment is applied. Fig. 6b is a schematic diagram showing yoke section connection iron core 37 applicable to the 2- to 12-pole types.

A is a hole to which the bar-type magnetic path formation iron core (auxiliary yoke section) 34 is inserted. Fig. 6c is a configuration drawing showing yoke section connecting iron core 37 A which is made by dividing yoke section connecting iron core 37 into four; this can reduce the material costs and the tool costs at the time of large scale production, and thereby reduce manufacturing costs. Fig. 6d and Fig. 6e are schematic diagrams of magnetic pole holder 38; Reference Numeral 38A is a magnetic pole holder utilizing the iron type material, which is effective in strengthening magnetic fields of the magnetic poles or reducing cogging. Reference Numeral 38B is a magnetic pole holder utilizing the non-magnetic member, which is effective in adjusting magnetic fields in gaps or reducing cogging.

[0053] Fig. 7a, Fig. 7b, Fig. 7c, and Fig. 7d depict bobbin type windings 7 and its electric insulation material 35. Particularly, by treating the wire surface with the electric insulation treatment, by enhancing the insulation of windings and iron cores by means of surface anodization of aluminum wires, aluminum foils, aluminum-made rigid member, alternatively, titanium wires, titanium foil, and titanium rigid member, and by treating the fine pores generated during chemical treatment with hardening treatment utilizing a heat resistant silicone resin, heat resistance over 300 degree Celsius can be provided to bobbin type winding 7. In Fig. 7c, 42 shows an example in which the surface of winding 7 is wrapped around with the above-mentioned foil; Fig. 7d shows an example in which cooling pipe 76 is inserted into a wire made by coating aluminum wire 74 of winding 7 with anodized and hardened film 73, cladding the surface of copper base material 75 with aluminum to cover the copper base material 75 with anodized and hardened film 73A, and coating hollow aluminum cable 74 with anodized and hardened film 73B. The hollow-type cooling tube becomes effective when it is used in manufacturing superconductive wires.

Claims

Claim 1. A rotary machine characterized by a stator made combining multiple

DC or AC electromagnets made of magnetic iron cores and the bobbin type windings, the stator comprises a bar type magnetic iron core to be electromagnetically coupled through windings, a magnetic path formation iron core, a magnetic iron core holding plate, a winding body, and a partition plate for each phase; wherein the magnetic iron core and the magnetic path formation core are in the form of blocks made by one type or a combination of two or more types of materials selected from iron type sintered materials, laminated electromagnetic steel plates, insulation coated iron wires, and insulation coated iron powder; the magnetic iron core having electromagnetic coupling is formed as the edge of the bar-type magnetic pole iron core contacts or fits the hole on the side plates; the stator has the magnetic path-magnetic pole configuration in which the magnetic pole section facing the rotor has an approximate parallelogram.

Claim 2. The rotary machine according to claim 1 characterized by a magnetic path formation iron core A provided on the outer circumference of said magnetic path formation iron core, and the length of the magnetic path- magnetic pole structure reduced in the direction of the axis or the circumference.

Claim 3. The rotary machine according to claim 1 characterized by a cylindrical ring made of magnetic members, non-magnetic members, or a combination of magnetic members or non-magnetic members to hold the bar type magnetic pole iron core; said cylindrical ring is provided on the inner circumference of the magnetic path section of said magnetic pole iron core to smooth the magnetic fields in a gap, thereby eliminating cogging and improving the property of the rotary machinery.

Claim 4. The rotary machine according to claim 1 characterized by an arc magnetic field adjustment ring, which is made of the iron type sintered material, the electromagnetic steel plate, or linear laminated material, is provided on the entire or a part of the inner periphery of the inner circumference of the magnetic path section in said magnetic pole iron core to smooth the magnetic fields in gaps, thereby improving the property of the rotary machinery.

Claim 5. The rotary machine according to claim 1 characterized by an arc magnetic field adjustment ring is made of the iron type sintered material or the electromagnetic steel plate, and provided on the entire or a part along the axis of the outer periphery of the rotor to smooth the magnetic fields in gaps, thereby eliminating cogging and improving the property of the rotary machinery.

Claim 6. The rotary machine according to claim 1 characterized by a cylindrical magnetic field adjustment ring is made of the iron type sintered material or the electromagnetic steel plate and provided on the entire or a part of the outer periphery of the rotor via a non-magnetic member to smooth the magnetic fields in gaps, thereby eliminating cogging and improving the property of the stator.

Claim 7. The rotary machine according to claims 3 to 6 whereby the magnetic fields in gaps are further smoothed, thereby eliminating cogging and improving the property of the stator.

Claim 8. The rotary machine according to claim 1 characterized by wherein the magnetic pole displacement angle for each adjacent phase is set to be (l~2) * 360 / pole number * phase number (degree) to enable the multiphase machinery to optimize its magnetic property without a phase adjustment device.

Claim 9. The rotary machine according to claims 1,2 and 8 characterized by the magnetic pole iron core having electromagnetic coupling is formed in a bar-shape; the magnetic pole iron core's magnetic pole section facing the rotor has an approximate parallelogram shape; provided is a support frame with a wide angled hole to communicate and to securely hold the shape of said magnetic pole section; and the surface of the magnetic pole in a gap is enlarged continuously to assemble the magnetic iron core.

Claim 10. The rotary machine according to claims 1,2 and 8 characterized by a magnetic pole iron core having electromagnetic coupling having a bar shape; and the magnetic pole iron core's magnetic pole section facing the rotor has an approximate parallelogram shape, the shape of said magnetic pole section is securely held in such a way that the adjacent phase is pushed out from each other, and the rotary magnetic fields are formed smoothly.

Claim 11. The rotary machine according to claim 1 characterized by a coil material using a wire made by anodizing the outer skin of aluminum or titanium wire, or by further hardening it with a linking type heat resistant silicone resin.

Claim 12. The rotary machine according to claim 11 characterized by a slot insulation material using the material made by anodizing the outer skin of aluminum or titanium material, or by further hardening it with a linking type heat resistant silicone resin.

Claim 13. The rotary machine according to claim 1 wherein a pass-through block is used to enable a coil-like coolant to pass through.

Claim 14. The rotary machine according to claim 1 wherein the pass-through pipe to enable a coil-like coolant to pass through is juxtaposed with a coil.

Claim 15. The rotary machine according to claim 1 wherein a superconductive material is used for the coil material.

Claim 16. The rotary machine according to claim 15 wherein the super conductive coil material is replaced with the anodized film-coated aluminum or titanium coil member in the magnet section of the rotor to improve heat resistance, or the super conductive material is used for the coil material to significantly increase the coil capacity (about 15 times).

Claim 17. The rotary machine according to any one of claims 1 to 16 characterized by a stator having the magnetic path-magnetic pole structure in which the magnetic path formation iron core of the magnetic pore iron core to be electromagnetically coupled and the magnetic path formation iron core are laminated with a silicon steel plate and a non-magnetic member with the electric insulation characteristic to adjust magnetic fields of the iron cores, or to prevent occurrence of eddy current when high frequency magnetic fields occur, thereby rendering high performance and high efficiency possible.

Claim 18. The rotary machine according to claim 1 characterized by a synchronous rotary machines in which the phase of the current flowing through the coil is controlled so as to change the phase of the rotor magnetic pole, thereby increasing the coil output or controlling phase variations.