CN203193466U - Disc type rotor magnetic reluctance variation induction alternating-current motor - Google Patents

Abstract

The embodiment of the utility model discloses a disc type rotor magnetic reluctance variation induction alternating-current motor which is provided with a closed magnetic force loop of small magnetic loss and is free from cogging. The disc type rotor magnetic reluctance variation induction alternating-current motor includes a casing, a rotating shaft, a rotor and a stator; the rotor comprises a disc-shaped body distributed along the axial direction of the rotating shaft; the disc-shaped body is fixed on the rotating shaft; the disc-shaped body is provided with a first magnetic conduction medium group and a second magnetic conduction medium group; the stator comprises a first composite disc assembly and a second composite disc assembly which are distributed along the axial direction of the rotating shaft; the first composite disc assembly and the second composite disc assembly include excitation coils (or permanent magnets), wedge magnetic poles which are corresponding to the first magnetic conduction medium group and the second magnetic conduction medium group, and armature coils wound on the wedge magnetic poles.

Description

A kind of disk rotor magnetic resistance change rate induction alternating current machine

Technical field

The utility model relates to the motor technology field, relates in particular to a kind of disk rotor magnetic resistance change rate induction alternating current machine.

Background technology

Motor is a kind of plant equipment that other forms of energy conversion is become electric energy.In the utility model, as Fig. 7, each point on the first wedge-shaped poles inner boundary curve to the distance in the center of circle of described annulus is ${\mathrm{\ρ}}_1=\sqrt{R^2-(R^2-r^2)\sin (\mathrm{n\ωt}+{\mathrm{\α}}_1)},$ Be R ²-ρ ₁ ²=(R ²-r ²) sin (n ω t+ α) 1.

Each point on the second wedge-shaped poles external boundary curve to the distance in the center of circle of described annulus is ${\mathrm{\ρ}}_2=\sqrt{r^2+(R^2-r^2)\sin (\mathrm{n\ωt}+\mathrm{\α})},$ Be ρ ₂ ²-r ²=(R ²-r ²) sin (n ω t+ α) 2.

Under the polar coordinates situation: ask by curve

And ray θ=α, the fan-shaped area formula in the bent limit that θ=β surrounds is 3.

Suppose to ignore leakage field, magnetic flux passes through from air gap is minimum all, makes θ=ω t, α=0; Wherein θ is mechanical angle

So the area (dash area) that epitrochanterian strong magnetic conductive media overlaps with wedge-shaped poles is seen Fig. 7:

$S_1=\frac{1}{2}{\∫}_0^{\mathrm{\θ}}{R}^{2}d-\frac{1}{2}{\∫}_0^{\mathrm{\θ}}{{\mathrm{\ρ}}_1}^2\mathrm{d\θ}=\frac{1}{2}{\∫}_0^{\mathrm{\θ}}(R^2-{{\mathrm{\ρ}}_1}^2)\mathrm{d\θ}$ ④

$S_1=\frac{1}{2}{\∫}_0^{\mathrm{\θ}}{{\mathrm{\ρ}}_2}^2\mathrm{d\θ}-\frac{1}{2}{\∫}_0^{\mathrm{\θ}}{r}^2\mathrm{d\θ}=\frac{1}{2}{\∫}_0^{\mathrm{\θ}}\left({{{\mathrm{\ρ}}_2}^2-r}^2\right)\mathrm{d\θ}$ ⑤

By formula 1., 2. can get S ₁=S ₂, namely $S=\frac{1}{2}{\∫}_0^{\mathrm{\θ}}(R^2-r^2)\sin \mathrm{n\θd\θ}=-\frac{1}{2n}(R^2-r^2)\cos \mathrm{n\θ}{|}_0^{\mathrm{\θ}}$ ⑥

Make r ₀ ²=R ²-r ²Be constant, so $S=\frac{1}{2\mathrm{<figure-callout\; id="0"\; label="n\; r"\; filenames="HDA00002130813100061.png"\; state="\{\{state\}\}">n</figure-callout>}}{r_{}}^{}{{}_0}^2(1-\cos \mathrm{n\&theta;})=\frac{1}{2\mathrm{<figure-callout\; id="0"\; label="n\; r"\; filenames="HDA00002130813100061.png"\; state="\{\{state\}\}">n</figure-callout>}}{r_{}}^{}{{}_0}^2(1-\cos \mathrm{n\&omega;t})$ ⑦

Because the utility model produces electromotive force by variation rate of magnetic flux in the unit interval, so be wrapped in the unloaded electromotive force on the circle coil on the wedge-shaped poles $U=\frac{\mathrm{d\&phi;}}{\mathrm{dt}}=\frac{B\&CenterDot;\mathrm{dS}}{\mathrm{dt}}=\frac{1}{2n}\&CenterDot;\frac{B\&CenterDot;d\left[{{\mathrm{<figure-callout\; id="0"\; label="r"\; filenames="HDA00002130813100061.png"\; state="\{\{state\}\}">r</figure-callout>}}_0}^2(1-\cos \mathrm{n\&omega;t})\right]}{\mathrm{dt}}=\frac{1}{2n}\&CenterDot;B\&CenterDot;{{\mathrm{<figure-callout\; id="0"\; label="r"\; filenames="HDA00002130813100061.png"\; state="\{\{state\}\}">r</figure-callout>}}_0}^2\sin \mathrm{n\&omega;t}\&CenterDot;\frac{d\left(\mathrm{n\&omega;t}\right)}{\mathrm{dt}}$ ⑧

Wherein B is magnetic field intensity, concerning magnetic source (permanent magnet or field core), the gross area of its minimal air gap is constant, total magnetic flux is constant, so magnetic induction density B is constant, what change is that total magnetic flux passes through along different paths, and the magnetic flux in each path changes, and 8. the φ in the formula is the magnetic flux in each path.

By formula 8. as can be known, $U=\frac{1}{2}\&CenterDot;B\&CenterDot;{{\mathrm{<figure-callout\; id="0"\; label="r"\; filenames="HDA00002130813100061.png"\; state="\{\{state\}\}">r</figure-callout>}}_0}^2\&CenterDot;\mathrm{\&omega;}\&CenterDot;\sin \mathrm{n\&omega;t}$ ⑨

Because of B, r ₀ ², n, ω are constant, so the electromotive force curve also is into the trigonometric function curve, namely electromotive force is just profound alternating current.A differentiate of functional integration has once been got back to itself again, 9. formula be similar to 1., 2. formula.

If the realization three-phase alternating current has dual mode to realize: 1, be connected in parallel by same rotating shaft with three groups of same structures, the stator alignment, rotor differs successively

Electrical degree; 2, be divided into trisection in same group, the wedge-shaped poles number lacks one than window number, and each five equilibrium differs

Electrical degree.

General permanent magnet field acts on coil, produces electromotive force and electric current is arranged, and the electric current in the coil produces magnetic field and reacts on magnetic pole, can make the magnetic pole demagnetization.And the counter magnetic field that the utility model coil current produces is without (or seldom passing through) permanent magnet, because permanent magnet is equivalent to air gap concerning coil magnetic field, so coil magnetic field is only at coil magnetic field inner loop (as Fig. 8), and the magnetic field that permanent magnet produces is immune and can not demagnetizes.

In research and practice process to prior art, utility model people of the present utility model finds that there is following problem in prior art:

Though existing sinusoidal ac machine can produce sinusoidal ac, the electromotive force waveform that produces is incomplete sine curve, thereby mechanical energy can not be changed into electric energy fully, causes harmonic wave big, and transformation efficiency is low; And existing magnetic pole consumptive material is many, the manufacturing cost height, and too many because of the magnetic pole consumptive material, also cause the overall volume of motor excessive, magnetic force loop complexity, magnetic loss are difficult to reduce, and transformation efficiency is low, and has slot effect.

The utility model content

In view of this, purpose of design of the present utility model is, a kind of disk rotor magnetic resistance change rate induction alternating current machine with the less sealing magnetic force loop of magnetic loss is provided.

The disk rotor magnetic resistance change rate induction alternating current machine that the utility model provides comprises:

Shell, rotating shaft, rotor and stator;

Described rotor includes along the discshaped body of the axial distribution of described rotating shaft, described discshaped body is fixed in described rotating shaft, described discshaped body is provided with the first magnetic conductivity media pack and the second magnetic conductivity media pack, the described first magnetic conductivity media pack and the second magnetic conductivity media pack are in same covering of the fan on the different circumference, be interspersed uniformly, and the first magnetic conductivity media pack is equal at the area of axial cross section with the second magnetic conductivity media pack;

Described stator comprises along the first compound dish assembly of the axial distribution of described rotating shaft and the second compound dish assembly, the described first compound dish assembly and the described second compound dish assembly all are fixed on the described shell, and described rotor is between the described first compound dish assembly and the second compound dish assembly;

The described first compound dish assembly and the second compound dish assembly comprise permanent magnet or magnet exciting coil, the iron core corresponding with the described first magnetic conductivity media pack and the second magnetic conductivity media pack, and be wound in armature coil on the described iron core.

As can be seen from the above technical solutions, the utility model embodiment has the following advantages:

Include along the discshaped body of the axial distribution of described rotating shaft in the rotor of the utility model disk rotor magnetic resistance change rate induction alternating current machine, described discshaped body is provided with the first magnetic conductivity media pack and the second magnetic conductivity media pack, the described first magnetic conductivity media pack is interspersed on different circumference uniformly with the second magnetic conductivity media pack, and the first magnetic conductivity media pack is equal at the area of axial cross section with the second magnetic conductivity media pack; The utility model utilizes the strong magnetic conductive media of rotor to change magnetic gap and overlapping area between two magnetic poles, controls the variation of magnetic flux on the first compound dish assembly and the second compound dish assembly, thereby produces electromotive force.It is simple to have the path, and the efficient operation of motor can be guaranteed in the magnetic force loop of the sealing that magnetic loss is less, and magnet exciting coil and armature coil all fix, and need not brush, and simple in structure, stator coil twines simple, and energy loss is little, no slot effect.

Description of drawings

Fig. 1 is the cross-section structure sketch of disk rotor magnetic resistance change rate induction alternating current machine embodiment integral body of the present utility model;

Fig. 2 is many groups structural profile sketch of utility model;

Fig. 3 is stator wedge-shaped poles core structure schematic diagram in the utility model example;

Fig. 4 is the cross-sectional view that the utility model example rotor dish cooperates with stator;

Fig. 5 is flux loop schematic diagram in the utility model example;

Fig. 6 is rotor magnetic line of force distribution road schematic diagram when diverse location;

Fig. 7 is that the area that strong magnetic conductive media overlaps with wedge-shaped poles calculates schematic diagram;

Fig. 8 is the utility model interior three-dimensional simplified schematic diagram.

Embodiment

The utility model embodiment provides a kind of disk rotor magnetic resistance change rate induction alternating current machine with the less sealing magnetic force loop of magnetic loss.

An embodiment of disc type rotor magnetic resistance variation sensing alternating current machine comprises among the utility model embodiment:

Shell, rotating shaft, rotor and stator;

Described rotor includes along the discshaped body of the axial distribution of described rotating shaft, described discshaped body is fixed in described rotating shaft, described discshaped body is provided with the first magnetic conductivity media pack and the second magnetic conductivity media pack, the described first magnetic conductivity media pack and the second magnetic conductivity media pack are in same covering of the fan on the different circumference, be interspersed uniformly, and the first magnetic conductivity media pack is equal at the area of axial cross section with the second magnetic conductivity media pack;

Described stator comprises along the first compound dish assembly of the axial distribution of described rotating shaft and the second compound dish assembly, the described first compound dish assembly and the described second compound dish assembly all are fixed on the described shell, and described rotor is between the described first compound dish assembly and the second compound dish assembly;

The described first compound dish assembly and the second compound dish assembly comprise permanent magnet or magnet exciting coil, the iron core corresponding with the described first magnetic conductivity media pack and the second magnetic conductivity media pack, and be wound in armature coil on the described iron core.

Optionally, the number of described discshaped body can be one, is arranged between the described first compound dish assembly and the second compound dish assembly, rotates with rotating shaft.

Optionally, the number of described discshaped body also can be for a plurality of, and the number of the described second compound dish assembly lacks one than the number of described discshaped body, and the described second compound dish assembly is fixed on the described shell, can not rotate with rotating shaft.The described second compound dish assembly comprise strong magnetic conduction gonosome discshaped body, be fixed in the iron core on the discshaped body and be wound in magnet exciting coil and armature coil on the described iron core.

Include along the discshaped body of the axial distribution of described rotating shaft in the rotor of the utility model disk rotor magnetic resistance change rate induction alternating current machine, described discshaped body is provided with the first magnetic conductivity media pack and the second magnetic conductivity media pack, the described first magnetic conductivity media pack is interspersed on different circumference uniformly with the second magnetic conductivity media pack, and the first magnetic conductivity media pack is equal at the area of axial cross section with the second magnetic conductivity media pack; The utility model utilizes the strong magnetic conductive media of rotor to change magnetic gap and overlapping area between two magnetic poles, controls the variation of magnetic flux on the first compound dish assembly and the second compound dish assembly, thereby produces electromotive force.

Below the disk rotor magnetic resistance change rate among the utility model embodiment is responded to the embodiment of alternating current machine, be described in detail, as shown in Figures 1 to 3, comprise shell 2, rotating shaft 1, rotor 3 and stator 4, rotating shaft 1 is horizontally disposed with, rotor 3 vertically arranges, shell 2 comprises first end 21 and the second end 22 of vertical setting, and in order to connect the connector 23 of first end 21 and the second end 22, first end 21 and the second end 22 are radially, to rotating shaft 1, the other end is to connector 23 by bearing fixing for one end; The first compound dish assembly 41 is positioned at first end 21 inboards of shell 2, and the second compound dish assembly 42 is positioned at first end 21 inboards of shell 2.

Rotor 3 comprises a discshaped body 31 along the axial distribution of rotating shaft, discshaped body 31 is fixed in the rotating shaft 1 and with rotating shaft 1 rotates, arrange on each discshaped body 31 along the equally distributed a plurality of strong magnetic conductivity media of the circumference of two different radius size, constitute in the strong magnetic conductivity medium along the strong magnetic conductivity medium 318 of the first less relatively circle distribution of radius size and to encircle, all become strong magnetic conductivity medium outer shroud along the strong magnetic conductivity medium 319 of the second relatively large circle distribution of radius size; Stator 4 comprises and all is fixed in the rotating shaft 1 along the first compound dish assembly 41 of the axial distribution of rotating shaft 1 and second compound dish assembly 42, the first compound dish assemblies 41 and the second compound dish assembly 42 but does not rotate with rotating shaft 1; Plug the discshaped body 31 of a rotor between the first compound dish assembly 41 and the second compound dish assembly 42, the first compound dish assembly 41 and the second compound dish assembly 42 have included, the iron core wedge-shaped poles corresponding with the equally distributed a plurality of strong magnetic conductivity media of the circumference along two different radius size on the discshaped body 31 that is inserted in rotor therebetween, and be wound in armature coil on the wedge-shaped poles; Concrete, the armature coil in the described first compound dish assembly and the second compound dish assembly is wound in respectively on described each wedge-shaped poles, and magnetic line of force distribution road schematic diagram is as shown in Figure 6 when diverse location for rotor 3.

Concrete, the described second compound dish assembly respectively to organize the wedge-shaped poles that iron core and the first compound dish assembly respectively organize on the iron core be one to one, described every group of iron core has a pair of wedge-shaped poles at least, and every group of wedge-shaped poles all is positioned within the same annulus, annulus inner and outer boundary radius of a circle is identical with each group window internal and external circumference radius on the described rotor discshaped body, and their shared covering of the fan angles also equate.Described every pair of wedge-shaped poles all comprises first wedge-shaped poles and second wedge-shaped poles.Described first wedge-shaped poles and second wedge-shaped poles are alternately arranged at described annulus.The cross-sectional view that rotor disk cooperates with stator as shown in Figure 4.

Described first wedge-shaped poles is surrounded by the excircle of inner boundary curve and described annulus, and described inner boundary curve is formed by connecting by several points, and each point on the described inner boundary curve to the distance in the center of circle of described annulus is Wherein, ρ ₁Be the distance of the point on the inner boundary curve to the center of circle of described annulus, R is the external diameter of described annulus, r is the internal diameter of described annulus, n is that the outer ring of described annulus or the logarithm of inner ring stator armature coil wedge-shaped poles (also are the number of rotor outer ring or inner ring magnetic conductor, or the quantity in 2 π cycles of electrical degree of having in week of mechanical angle one), ω is mechanical angle speed, and t is the time, α ₁Be start angle, wherein, α ₁Can be zero;

Described second wedge-shaped poles is surrounded by the inner periphery of external boundary curve and described annulus, and described external boundary curve is formed by connecting by several points, and each point on the described external boundary curve to the distance in the center of circle of described annulus is

Wherein, ρ ₂Be the distance of the point on the external boundary curve to the center of circle of described annulus, R is the external diameter of described annulus, and r is the internal diameter of described annulus, and n is the right quantity of described wedge-shaped poles, and ω is mechanical angle speed, and t is the time, α ₂Be start angle, wherein, α ₂Can be zero, and if adjacent two wedge-shaped poles α then ₂-α ₁=± 2 π.Exemplary, ρ ₁And ρ ₂With respect to shown in wedge-shaped poles the position as shown in Figure 5.

The discshaped body 31 of rotor is nonmagnetic material, and the disk body of the described first compound dish assembly and the second compound dish assembly is magnetic; Be provided with at least two group windows that evenly are interspersed along different circumference, the center of circle of described different circumference is identical, and the described first magnetic conductivity media pack and the second magnetic conductivity media pack place described at least two group windows respectively; Hold the last one magnetic conductivity medium in each window, strong magnetic conductivity medium described here can be pure iron, also can be the good materials of other magnetic conductivity.

As shown in Figure 3, the window of equally distributed two group of windows of the circumference along two different radius size on the discshaped body 31 of rotor is one to one, are two covering of the fan sections that are in the same covering of the fan that launches radially from the center of circle of discshaped body 31 along the window 318 in first group of windows of the first less relatively circle distribution of radius size with along the window 319 in second group of windows of the second relatively large circle distribution of radius size, and for guaranteeing the magnetic circuit balance, the axial cross section of the window 319 in first group of windows on the discshaped body 31 of rotor in 318 and second group of windows is long-pending to be equated.

In the utility model embodiment, the strong magnetic conductivity medium of equally distributed at least two groups of circumference along at least two different radii sizes is set on the described rotor discshaped body, and two groups strong magnetic conductivity medium axial cross sections are long-pending equal; The cross-sectional area of wedge-shaped poles is all identical on the described stator core.Two groups strong magnetic conductivity media remain constant (gross area that is the magnetic flux process is constant) with the area coverage that overlaps of two groups of wedge-shaped poles, overlap area coverage and be half of total cross-sectional area of wedge-shaped poles on every group of iron core, be that the total magnetic flux by two wedge-shaped poles is constant on each iron core, total magnetic flux can be produced by permanent magnet or excitation, by changing the path of the magnetic line of force, magnetic flux is changed according to certain rules, around magnetic flux, induce electric field.

With reference to Fig. 1, as can be seen: the window 318 in first group of windows accommodates the filler 313 that accommodates strong magnetic conductivity medium in the window 319 in filler 312, the second group of windows of strong magnetic conductivity medium.

Corresponding with above-mentioned rotor structure, the second compound dish assembly 42 comprises the discshaped body 421 of magnetic, described discshaped body is provided with the window corresponding with the wedge-shaped poles on the described iron core, be fixed in the magnetic pole 422,425 on the discshaped body 421, be fixed in the iron core wedge-shaped poles 423,426 on the discshaped body 421, and be wound in the armature coil 424,427 on each iron core two wedge-shaped poles.Coil 424,427 corresponding with the window on the discshaped body 31, discshaped body 421 is fixed in the second end 22 inboards, and the quantity that described iron core wedge-shaped poles is right is that the number of windows on the described discshaped body is identical.

Reality, the distribution rings that the window of discshaped body 311 and window form on the iron core wedge-shaped poles on the second compound dish assembly 42 and the rotor 31 is complementary.

As shown in Figure 1, the structure of the first compound dish assembly 41 and the second compound dish assembly 42 is similar, comprises a discshaped body 411, two annular magnetic poles 412,415, two groups of iron cores 413,416, two groups of armature coils 414,417; The first compound dish assembly 41 is fixed in first end 21 inboards.With the energising of the magnet exciting coil in the first compound dish assembly 41 and the second compound dish assembly 42, can produce the closed magnetic circuit shown in arrow among Fig. 5, this magnetic structure, the path is simple, and magnetic loss is little, can guarantee the efficient operation of motor.

Though in the above embodiments, the number of strong magnetic conductivity medium is 12 on the discshaped body 31, and the armature coil number of the first compound dish assembly 41 is 24.

The utility model interior three-dimensional simplified schematic diagram sees also Fig. 8.

Foregoing is preferred embodiment of the present utility model only, is not for restriction embodiment of the present utility model, wherein the armature coil number can be 2,4,6...... etc.The present embodiment can also be organized in parallel more; two groups, three groups etc. (be two group as Fig. 2); those of ordinary skills are according to main design of the present utility model and spirit; protection range of the present utility model can carry out corresponding flexible or modification very easily, so should be as the criterion with the desired protection range of claims.

The utility model can make reluctance motor into through some simple changes, because magnetic field is continuous in a circumferential direction, makes same rotor be subjected to uninterrupted pulling force in a circumferential direction, not pulsation, thus improve the efficient that electric energy is converted into mechanical energy.

Claims (8)

1. a disk rotor magnetic resistance change rate induction alternating current machine is characterized in that, comprising:

Shell, rotating shaft, rotor and stator;

Described rotor includes along the discshaped body of the axial distribution of described rotating shaft, described discshaped body is fixed in described rotating shaft, described discshaped body is provided with the first magnetic conductivity media pack and the second magnetic conductivity media pack, the described first magnetic conductivity media pack and the second magnetic conductivity media pack are in same covering of the fan on the different circumference, be interspersed uniformly, and the first magnetic conductivity media pack is equal at the area of axial cross section with the second magnetic conductivity media pack;

Described stator comprises along the first compound dish assembly of the axial distribution of described rotating shaft and the second compound dish assembly, the described first compound dish assembly and the described second compound dish assembly all are fixed on the described shell, and described rotor is between the described first compound dish assembly and the second compound dish assembly;

The described first compound dish assembly and the second compound dish assembly comprise permanent magnet or magnet exciting coil, the iron core corresponding with the described first magnetic conductivity media pack and the second magnetic conductivity media pack, and be wound in armature coil on the described iron core.

2. disk rotor magnetic resistance change rate induction alternating current machine as claimed in claim 1 is characterized in that,

The number of described discshaped body is at least one, is arranged between the described first compound dish assembly and the second compound dish assembly, rotates with rotating shaft.

3. disk rotor magnetic resistance change rate induction alternating current machine as claimed in claim 1 is characterized in that,

The discshaped body of described rotor is nonmagnetic material, and the disk body of the described first compound dish assembly and the second compound dish assembly is magnetic conduction substance;

Described discshaped body is provided with at least two group windows that evenly are interspersed along different circumference, and the center of circle of described different circumference is identical, and the described first magnetic conductivity media pack and the second magnetic conductivity media pack place described at least two group windows respectively.

4. disk rotor magnetic resistance change rate induction alternating current machine as claimed in claim 3 is characterized in that,

The described second compound dish assembly respectively to organize the wedge-shaped poles that iron core and the first compound dish assembly respectively organize on the iron core be corresponding one by one, the side of described iron core has and has two wedge-shaped poles at least;

Every group of described iron core has a pair of wedge-shaped poles at least, wedge-shaped poles is to occur in pairs, and every group of wedge-shaped poles all is positioned within the same annulus, and annulus inner and outer boundary radius of a circle is identical with each group window internal and external circumference radius on the described discshaped body, and their shared covering of the fan angles also equate; Described every pair of wedge-shaped poles all comprises first wedge-shaped poles and second wedge-shaped poles; Described first wedge-shaped poles and second wedge-shaped poles are alternately arranged at described annulus;

Described first wedge-shaped poles is surrounded by the excircle of inner boundary curve and described annulus, and described inner boundary curve is formed by connecting by several points, and each point on the described inner boundary curve to the distance in the center of circle of described annulus is Wherein, ρ ₁Be the distance of the point on the inner boundary curve to the center of circle of described annulus, R is the external diameter of described annulus, and r is the internal diameter of described annulus, and n is the outer ring of described annulus or the logarithm of inner ring stator armature coil wedge-shaped poles, and ω is mechanical angle speed, and t is the time, α ₁Be start angle;

Described second wedge-shaped poles is surrounded by the inner periphery of external boundary curve and described annulus, and described external boundary curve is formed by connecting by several points, and each point on the described external boundary curve to the distance in the center of circle of described annulus is

Wherein, ρ ₂Be the distance of the point on the external boundary curve to the center of circle of described annulus, α ₂Be start angle, and if two wedge-shaped poles adjacent, α then ₂=α ₁

5. disk rotor magnetic resistance change rate induction alternating current machine as claimed in claim 1 is characterized in that,

The iron core of the described first compound dish assembly and the second compound dish assembly is strong magnetic conductivity material;

Described iron core and magnetic pole all are fixed on the described compound disk body, and the quantity that the iron core wedge-shaped poles is right is that the number of windows on the described rotor discshaped body is identical;

Armature coil in the described first compound dish assembly and the second compound dish assembly is wound in respectively on each wedge-shaped poles.

6. disk rotor magnetic resistance change rate induction alternating current machine as claimed in claim 1 is characterized in that,

The strong magnetic conductivity medium of equally distributed at least two groups of circumference along at least two different radii sizes is set on the described rotor discshaped body, and two groups strong magnetic conductivity medium axial cross sections are long-pending equal;

The cross-sectional area of wedge-shaped poles is all identical on the described stator core, two groups strong magnetic conductivity media remain constant with the area coverage that overlaps of their one-sided wedge-shaped poles, overlap area coverage and be half of total cross-sectional area of one-sided wedge-shaped poles, total magnetic flux is produced by permanent magnet or excitation, by changing the path of the magnetic line of force, magnetic flux is changed according to certain rules, around magnetic flux, induce electric field.

7. the described disk rotor magnetic resistance change rate of claim 1 is responded to alternating current machine, it is characterized in that:

Iron core wedge-shaped poles on the described stator in the same annulus is continuous in a circumferential direction, and magnetic field is continuous at circumferencial direction, so the electromotive force of coil-induced generation is continuous, and no slot effect.

8. disk rotor magnetic resistance change rate as claimed in claim 1 is responded to alternating current machine, it is characterized in that:

Described shell comprises first end and the second end that arranges perpendicular to described rotating shaft, and in order to connect the connector of described first end and the second end, described first end and the second end are disposed radially, to described rotating shaft, the other end is fixed on the described connector one end by bearing fixing;

The described first compound dish assembly is fixed in first end and the second end inboard of described shell; The described second compound dish assembly radially, an end to described rotating shaft and does not rotate with described rotating shaft by bearing fixing, the other end is fixed on the described connector.

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