CN106130198B - Generator assembly - Google Patents
- ️Fri Nov 19 2021
CN106130198B - Generator assembly - Google Patents
Generator assembly Download PDFInfo
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Publication number
- CN106130198B CN106130198B CN201610474042.8A CN201610474042A CN106130198B CN 106130198 B CN106130198 B CN 106130198B CN 201610474042 A CN201610474042 A CN 201610474042A CN 106130198 B CN106130198 B CN 106130198B Authority
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- China Prior art keywords
- generator
- projections
- bar
- coil
- shaped Prior art date
- 2015-05-05 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 230000003993 interaction Effects 0.000 claims abstract 2
- 238000002955 isolation Methods 0.000 claims description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 11
- 230000004907 flux Effects 0.000 description 6
- 239000000696 magnetic material Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000011900 installation process Methods 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010137 moulding (plastic) Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
- F16C41/004—Electro-dynamic machines, e.g. motors, generators, actuators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1869—Linear generators; sectional generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
- F16C19/36—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
- F16C19/364—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention relates to a generator assembly for obtaining energy in a bearing arrangement by interaction with a rotating magnetic tone wheel (16), comprising a generator movement (18) having a yoke portion (20) and a plurality of bar-shaped projections (22a-22d, 24a-24c) arranged in a row and projecting from the yoke portion 20 in a longitudinal direction substantially perpendicular to the yoke portion 20, wherein the bar-shaped projections (22a-22d, 24a-24c) have ends configured to form gaps with the magnetic tone wheel (16), respectively, the generator movement (18) further comprising at least one generator coil (26a-26c) wound around at least one of the projections (22a-22d, 24a-24 c). It is proposed that at least a part of the generator core (18) is made of steel.
Description
Technical Field
The present invention relates to a generator assembly for use in a bearing arrangement and to a bearing arrangement comprising such a generator assembly.
Background
The present invention relates to a generator assembly for harvesting energy in a bearing arrangement configured to generate energy from relative movement of an outer race of a bearing and an inner race of the bearing. Different types of bearings are widely used in the field of mechanical engineering and are sensitive elements that need to be monitored in many applications.
In most applications today, electronic components are used to monitor the bearings, while the associated sensors are powered by wires or by an external generator. However, document WO2013/160035 discloses an electric power generating assembly configured to be integrated in a bearing assembly, wherein said electric power generating assembly interacts with a magnetic wheel comprising a magnetically polarized material having an alternating polarization direction.
The generator assembly is configured to provide power for monitoring electronics that can thus communicate with external devices using a wireless signal interface.
The power generating assembly in document WO2013/160035 comprises a generator core and a motor coil wound on a core made of ferrite material. Ferrite cores suffer from the disadvantage that they are rather expensive to manufacture at low volumes, while the ferrite material is brittle for the required dimensions. In addition, the ferrite core provides excess power at high rotational frequencies. Rectangular coils are also more difficult/expensive to manufacture than conventional cylindrical coils.
Disclosure of Invention
The present invention seeks to provide a generator assembly that derives energy in a bearing arrangement, having a generator core that is superior in terms of manufacturing and cost, whilst maintaining a similar level of performance at least at low rotational frequencies, whilst reducing excess power at high rotational frequencies.
The invention starts from a generator assembly for obtaining energy in a bearing arrangement, comprising at least two bearing rings configured to rotate relative to each other. The generator assembly is designed to interact with a rotating magneto-acoustic wheel or impulse wheel connected to one of the bearing rings and made of a magnetic material with alternating magnetization directions.
The generator assembly includes a movement having a yoke portion and a plurality of bar-shaped protrusions arranged in a row and protruding from the yoke portion in a direction substantially perpendicular to a longitudinal direction of the yoke portion.
In this context the expression "substantially perpendicular" shall particularly include configurations in which the protrusions protrude in a direction towards the common axis of rotation of the bearings, so that they are not completely parallel.
The rod-shaped protrusions are provided with end portions configured to form gaps with the tone wheels, respectively. The gap should be such that the magnetic field generated by the magnetic tone wheel can easily pass through the gap without significant loss. The gap typically has a width of about 1-2 mm depending on the diameter of the end face of the projection. The diameter of the end surface of the projection facing the tone wheel is preferably larger than the width of the gap by at least a factor of 5-10. The distance between the ends of the projections corresponds to an integer multiple of at least substantially half the pitch between the magneto-acoustic wheels, such that the end faces of adjacent projections face respective regions having opposite directions of magnetization of the magneto-acoustic wheels. Furthermore, the generator movement comprises at least one generator coil wound on at least one of the projections of the movement.
The invention provides a generator core made of steel. Surprisingly, it has been demonstrated that it is possible to achieve a performance similar to that of a ferrite core when using a steel core. Thus, brittle ferrite material can be avoided while a movement assembly for a generator can be manufactured at low cost using reliable and proven technology in many different shapes. In particular, the shape of the steel core may be designed such that losses of magnetic flux may be avoided, while at the same time cost-effective coils can be used and a simple mounting process is achieved. The shape of the steel core may also be designed such that the excess power generated at high rotational speeds is reduced.
In a preferred embodiment of the invention, the generator movement comprises three projections, wherein the generator coil is wound around one of the three projections in between. The overall structure of the longitudinal yoke portion with three projections has a shape similar to the letter "E", and is therefore called an "E" -movement. The magnetic flux passing through the two lateral projections of the generator core will merge at the middle projection and thus cause a sufficiently high induced current in the coil.
Furthermore, it is proposed that the projection provided with the generator coil has a cylindrical portion which is fitted into a central bore of the generator coil. Thus, a cost-effective, commercially available cylindrical generator coil can be used. In a preferred embodiment of the invention, the cylindrical central core of the generator core is mounted on a C-or U-shaped steel part constituting the two transverse projections of the core and of the yoke part.
Furthermore, it is proposed that the ends of at least one of the rod-shaped projections are provided with pole shoes, preferably each end is provided with such a pole shoe. The shape and dimensions of the end faces of the pole shoes can be adapted to the shape and size of the poles of the tone wheel, while the body of the pole shoes can guide the magnetic flux to the preferably cylindrical body portion of the projection in a reliable manner with low losses. The protrusions not provided with the generator coil may be formed by a rectangular cross-section or any other suitable cross-section.
It is also proposed that the coil is a cylindrical coil, in particular, wound on a cylindrical shaped piece and then mounted on the cylindrical portion of one of the rod-shaped projections. This facilitates the assembly of the generator device and allows the use of cost-effective pre-fabricated coils. As an alternative, it is proposed to wind the coil directly onto the core element of the generator, in order to avoid detachment of the core part of the generator for mounting the pre-assembled coil.
In a preferred embodiment of the invention, the generator movement comprises a plurality of projections without generator coils, wherein one projection equipped with a generator coil is provided between each pair of projections described later. The result is a comb-like structure with one generator coil at every other projection. The protrusion without the generator coil may be formed as one solid or stacked steel sheet with the yoke portion.
The invention makes use of the variation of the magnetic flux density of a magneto-acoustic wheel that can be attached to the moving ring of a bearing unit. Since the intermediate pole may be cylindrical, a pole shoe may be connected to the intermediate pole for guiding the magnetic flux. The use of iron-containing steel instead of ferrite makes the solution more robust and cost-effective. Designing a movement with a higher output voltage and higher output power can be realized in a cost-effective manner using simple rectifying circuits.
The invention is particularly suitable for train bearing units which need to be adequately monitored while being exposed to extreme harsh environmental conditions. The generator assembly can be embedded in a seal of the bearing unit, whereby electronic devices, such as rectifiers, for obtaining the energy generated in the generator coil can be protected.
A further aspect of the invention therefore relates to a bearing unit, in particular a train bearing unit for train wheels, provided with a generator assembly as described above and a magneto-acoustic wheel mounted on the rotating ring of the bearing, as well as electronic components, such as rectifying circuits, for converting the induced current generated in the generator coil into electrical energy and means, such as capacitors or accumulators, for storing said energy. Furthermore, the bearing unit with the generator assembly may be provided with sensors and monitoring electronics, evaluating the signals of the sensors, and optionally with means for wirelessly transmitting the measured signals. The sensor signals may include rotational speed, temperature, vibration, acceleration, etc., preferably measured using a tone wheel.
The above-described embodiments of the invention and the appended claims and drawings illustrate various characterizing features and specific combinations of the invention. A skilled person can easily imagine further combinations or sub-combinations of these features in order to adapt the invention as defined in the claims to his or her specific needs.
Drawings
Fig. 1 is a schematic view of a bearing assembly comprising a generator assembly according to the present invention:
figure 2 is a generator movement of a generator assembly according to the invention in a side view;
figure 3 is a view of a projection, a generator coil, and a pole piece of the generator core according to figure 2;
figure 4 is a side view of a generator movement according to a second embodiment of the invention;
FIG. 5 is a generator assembly according to one of FIGS. 1-4 mounted in a housing;
FIG. 6 is a view showing an installation process of the generator assembly according to FIG. 2;
fig. 7 is a schematic view of a generator assembly according to the present invention interacting with a magnetic tone wheel.
Detailed Description
Figure 1 is a cross-sectional view of a detail of a bearing assembly having an outer race 10, an inner race 12 and a
generator assembly14 secured to the non-rotating outer race 10 of the bearing. The
magneto16 is fixed to the rotating inner ring 12 of the bearing assembly, which is formed as a double row rolling bearing for use in the train field. Relative rotation of the inner race 12 and the outer race 10 causes relative rotation of the
generator assembly14 and the magneto-
acoustic wheel16. The sealing system provides a seal across the gap between the two bearing rings 10, 12 whilst the magneto-
acoustic wheel16 engages with an external labyrinth of the sealing system. The magneto-
acoustic wheel16 is made of a magnetic material having radially alternating directions of polarization. The magneto-
acoustic wheel16 may be made of a permanent magnetic material or of a magnetic composite material, such as plastic with embedded magnetic material.
The
generator cartridge18 in the
generator assembly14 according to the invention is illustrated in more detail in fig. 2. Fig. 2 shows a
generator core18 with a so-called multi-stage E-core design, which has a comb-like structure with a bar-shaped
yoke portion20 and seven bar-shaped
projections22a-22d, 24a-24 c. Four of the
protrusions22a-22d are formed to have an equidistant gap while protruding substantially perpendicular to the
yoke portion20. The
outermost portions22a, 22d of the projections are slightly longer than the
middle portions22b, 22c, while the end faces are inclined or curved to form equal width gaps between the ends of the
projections22a-22d, 24a-24d of the
core18 and the
magnetic tone wheel16.
Further protrusions24a-24c with
generator coils26a-26c are provided between each pair of the four
protrusions22a-22d, which are formed integrally with the
yoke portion20, respectively. As will be described in greater detail below, the last-mentioned
projections24a-24c are connected to the
yoke portion20 by press-fitting or screw-fitting or other suitable means, while having
pole pieces28a-28c, respectively.
The
yoke portion20, as well as the
projections22a-22d, 24a-24c of the
generator core18, are made of ferrous steel, which is easy in terms of workability, while having a sufficiently high magnetic permeability.
Figure 3 shows in more detail one of the
projections24a of the movement, which has a
pole piece28a and a
generator coil26 a. The
projection24a has a cylindrical body portion fitted into a central hole of the
coil26a, and the
coil26a is wound on the
plastic molding30 or has a plastic spacer on its axial end face. The
pole piece28a has a width that increases with increasing distance from the
yoke portion20 until it reaches the width of the
magnetic tone wheel16, and the length of the end face of the
pole piece28a in the circumferential direction of the
tone wheel16 is smaller than the length of one of the magnetized portions of the
magnetic tone wheel16 in the circumferential or pitch direction. The
pole piece28a can be formed integrally with the cylindrical body portion of the
projection24a, or connected to the latter by screwing, welding or other means.
Alternatively, the
coil26a may be directly wound onto the body portion of the
projection24a while ensuring isolation of the
yoke portion20 and the
pole piece28a by using a spacer.
Fig. 4 is a further embodiment of the invention, which shares many similarities with the embodiment of fig. 2 and 3, and therefore description of the same features is omitted here. The main difference is that the two
transverse generator coils26a, 26c are arranged slightly lower than the middle generator coil, so that the distance between the generator coils and the
magnetic tone wheel16 and thus the height of the pole shoes in the radial direction are more or less the same. The curvature of
tone wheel16 is compensated by the different widths of the yoke portions of
generator movement18.
Fig. 5 shows a
sensor housing32 with a
generator movement18 according to the invention.
Fig. 6 shows the installation process of the
generator core18 according to fig. 2. The body portions of the
cylindrical projections24a-24c are formed integrally with the
pole pieces28a-28c while being fitted into the intermediate holes of the generator coils 26a-26c, and this subassembly is then secured into the holes on the radially inner surface of the
yoke portion20 between the fixing
projections22a-22d, 24a-24c without additional generator coils.
Fig. 7 shows the assembly in operation, i.e. in magnetic engagement with the
magnetoacoustic wheel16 according to the invention.
The inventors conducted comparative tests for comparing the performance between the iron core and the ferrite core as described above and found that the magnetic flux in the ferrite core was only slightly higher than in 1010 cold rolled steel. However, the normal difference is less than 1%, and translates to a similar value when comparing the induced voltage to the output power. This small disadvantage is to a large extent outweighed by the easier processing. In particular, the magnetic coil according to the invention can be easily provided with pole shoes having an optimized shape, so that the effective power output is increased much more than that of existing ferrite core designs.
In tests for train bearings, the voltage output of the
generator core18 according to the invention amounts to 14.4V/rpm, which is sufficient to drive state-of-the-art sensor assemblies and wireless transmission interfaces. Simulations of a properly assembled
generator core18 according to the present invention for a train application show that the power output to the matched impedance will amount to 56mW, with the power output coupled to the capacitor amounting to 177 mW. This applies in particular to the voltage frequency of 660Hz which is desired in observation applications. Although at high frequencies the ferrite core is better at the output voltage, the result is surprisingly that the steel core is comparable or even better in frequency range. The output voltage of the
generator core18 according to the invention is 16% higher than the output voltage of the design according to the prior art when the capacitor is charged using a capacitive coupling optimized to 660 Hz.
Claims (9)
1. A generator assembly obtains energy in a bearing arrangement by interaction with a rotating magnetic tone wheel (16), the generator assembly comprises a generator core (18), the generator core (18) having a yoke portion (20) and a plurality of first bar-shaped protrusions (22a-22d) and a plurality of second bar-shaped protrusions (24a-24c) arranged in a row and protruding from the yoke portion (20) in a longitudinal direction substantially perpendicular to the yoke portion 20, wherein the first and second bar-like projections have ends configured to form gaps with the magneto-acoustic wheel (16), respectively, the generator movement (18) further comprising at least one generator coil (26a-26c) wound around at least one of the second stick-like projections (24a-24c), characterized in that at least a portion of the generator movement (18) is made of steel;
the ends of the second rod-like projections (24a-24c) are provided with pole shoes (28a-28c), respectively;
the length of the end faces of the pole shoes (28a-28c) in the circumferential direction of the magneto-acoustic wheel (16) is smaller than the length of one of the magnetized portions of the magneto-acoustic wheel (16) in the circumferential or pitch direction;
the generator coil is wound directly on the body portion of the second bar-shaped projection and isolation with respect to the yoke portion and the pole piece is ensured using a plastic washer;
wherein the generator coils laterally outside are arranged lower than the generator coils in the middle, so that the distance between the generator coils and the magneto wheel (16) and thus the height of the pole shoes in the radial direction is the same.
2. The generator assembly according to claim 1, characterized by comprising at least three second bar-shaped projections (24a-24c), wherein the generator coil is wound around at least a middle one of the at least three second bar-shaped projections (24a-24 c).
3. The generator assembly according to claim 2, characterized in that the second bar-shaped projections (24a-24c) provided with generator coils (26a-26c) have a cylindrically shaped body part which fits into the generator coils (26a-26 c).
4. Generator assembly according to claim 3, wherein the width of the pole shoes (28a-28c) increases with increasing distance from the yoke portion (20).
5. The power generator assembly as claimed in claim 4, wherein the coil is a cylindrical coil.
6. The generator assembly according to claim 5, characterized in that the coil is wound on a cylindrical shaped piece (30) and subsequently mounted onto the cylindrical body portion of one of the second bar-like projections (24a-24 c).
7. The generator assembly according to claim 6, characterized by comprising at least two first rod-shaped projections (22a-22d) without generator coils, wherein each second rod-shaped projection (24a-24c) provided with the generator coil (26a-26c) is arranged between two first rod-shaped projections (22a-22d) without generator coils.
8. The generator assembly according to claim 6, characterized in that the first bar-shaped projections (22a-22d) without generator coils are formed in one piece with the yoke portion (20).
9. Bearing having at least two rotating rings configured to rotate relative to each other, characterized by comprising a generator assembly according to one of the preceding claims and a magneto wheel (16).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IN2280CH2015 | 2015-05-05 | ||
| IN2280/CHE/2015 | 2015-05-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106130198A CN106130198A (en) | 2016-11-16 |
| CN106130198B true CN106130198B (en) | 2021-11-19 |
Family
ID=57179123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610474042.8A Active CN106130198B (en) | 2015-05-05 | 2016-05-05 | Generator assembly |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106130198B (en) |
| DE (1) | DE102016207677A1 (en) |
Families Citing this family (1)
* Cited by examiner, † Cited by third party| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019108981B4 (en) * | 2019-04-05 | 2024-02-29 | Schaeffler Technologies AG & Co. KG | Wheelset bearing for a rail vehicle and method for operating a sensor system of a wheelset bearing |
Citations (3)
* Cited by examiner, † Cited by third party| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1104810A (en) * | 1993-11-08 | 1995-07-05 | 三菱电机株式会社 | Rotating electric machine and its manufacturing method, laminated core and its manufacturing method |
| CN103051132A (en) * | 2012-12-21 | 2013-04-17 | 同济大学 | Axle end power device for rapid railway freight vehicle |
| CN104321552A (en) * | 2012-04-24 | 2015-01-28 | Skf公司 | Bearing power embedded generating configuration |
Family Cites Families (1)
* Cited by examiner, † Cited by third party| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010021160A1 (en) * | 2010-05-21 | 2011-11-24 | Schaeffler Technologies Gmbh & Co. Kg | Rolling bearings with integrated generator |
-
2016
- 2016-05-04 DE DE102016207677.9A patent/DE102016207677A1/en active Pending
- 2016-05-05 CN CN201610474042.8A patent/CN106130198B/en active Active
Patent Citations (3)
* Cited by examiner, † Cited by third party| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1104810A (en) * | 1993-11-08 | 1995-07-05 | 三菱电机株式会社 | Rotating electric machine and its manufacturing method, laminated core and its manufacturing method |
| CN104321552A (en) * | 2012-04-24 | 2015-01-28 | Skf公司 | Bearing power embedded generating configuration |
| CN103051132A (en) * | 2012-12-21 | 2013-04-17 | 同济大学 | Axle end power device for rapid railway freight vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106130198A (en) | 2016-11-16 |
| DE102016207677A1 (en) | 2016-11-10 |
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| 2018-04-27 | SE01 | Entry into force of request for substantive examination | |
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| 2021-11-19 | GR01 | Patent grant |