CN108132192B - Generator rotor magnetic pole simulation testing device - Google Patents
Generator rotor magnetic pole simulation testing device Download PDFInfo
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- CN108132192B CN108132192B CN201711481800.XA CN201711481800A CN108132192B CN 108132192 B CN108132192 B CN 108132192B CN 201711481800 A CN201711481800 A CN 201711481800A CN 108132192 B CN108132192 B CN 108132192B
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- 238000012360 testing method Methods 0.000 title claims abstract description 68
- 238000004088 simulation Methods 0.000 title claims abstract description 56
- 239000000463 material Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000009661 fatigue test Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0073—Fatigue
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- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention provides a generator rotor magnetic pole simulation test device, which comprises: a first base on which a driving part is mounted; the second base is provided with a measured magnetic pole; and the simulated stator core is arranged on the first base, and the gap value between the simulated stator core and the measured magnetic pole is smaller than or equal to the target air gap value, wherein the measured magnetic pole can rotate relative to the simulated stator core. The generator rotor magnetic pole simulation test device can test the protection reliability of the fixation of the rotor magnetic pole.
Description
Technical Field
The invention relates to the field of wind power generation, in particular to a generator rotor magnetic pole simulation testing device.
Background
Wind energy is a representative clean renewable energy source, and is increasingly gaining attention from countries in the world due to its enormous amount. However, the wind generating set has complex operation conditions and long operation time, so that the operation faults of the magnetic poles of the generator rotor frequently occur, and the safety and stability problems of the wind generating set are increasingly prominent.
During operation of the wind turbine generator system, rotation of the rotor poles causes the rotor poles to alternately sweep across the stator slots, thereby being subjected to periodically varying suction forces by the stator slots. Because the rotor magnetic poles can be fixed on the surface of the rotor bracket through the magnetic pole fixing pieces in different modes, the periodic alternating suction force can form fatigue load on the magnetic pole fixing pieces, and the fixation failure of the rotor magnetic poles of the wind generating set can be caused after the wind generating set runs for a long time, so that the rotor magnetic poles can jump out.
Therefore, in order to prevent the rotor magnetic poles from failing during operation, a test is required which can simulate the operation of the stator magnetic poles and the rotor magnetic poles and verify whether the magnetic pole fixing members can reliably fix the rotor magnetic poles after a long period of alternating load. At present, the traditional measuring mode is judged by depending on the actual running condition of the generator and combining with experience, the reliability of the mode is not high, and due to the dependence on manpower, subjective judgment is easy to generate, so that the application of the traditional measuring mode is very limited. At present, most of testing devices related to wind generating sets focus on blade fatigue tests, rotor magnetic pole T-slot crack tests, bending fatigue tests of rotor magnetic poles and the like, and related tests and equipment are not available for verifying whether a magnetic pole fixing piece can reliably fix a rotor magnetic pole after long-time alternating loads.
Disclosure of Invention
The invention provides a generator rotor magnetic pole simulation test device, which is used for testing the protection reliability of the fixation of a rotor magnetic pole by simulating whether a magnetic pole fixing piece can reliably fix the rotor magnetic pole after the rotor magnetic pole is subjected to alternating load generated by a stator tooth slot in the running process of a generator.
According to an aspect of the present invention, there is provided a generator rotor magnetic pole simulation test apparatus including: a first base on which a driving part is mounted; the second base is provided with a measured magnetic pole; and the simulated stator core is arranged on the first base, and the gap value between the simulated stator core and the measured magnetic pole is smaller than or equal to the target air gap value, wherein the measured magnetic pole can rotate relative to the simulated stator core.
According to the embodiment of the invention, the gap value can be determined by a target air gap value and the magnetic attraction force of the coil wound on the stator core in the target generator on the tested magnetic pole under the load state.
According to an embodiment of the present invention, the second chassis may include: a support base including a rail; and the mounting seat is mounted on the track and can move along the track, and the measured magnetic pole is fixed on the mounting seat.
According to an embodiment of the present invention, the simulation stator core may be a simulation inner stator core, and the simulation inner stator core may be connected to the driving part.
According to an embodiment of the present invention, the dummy stator core may be a dummy outer stator core, and the driving part may be installed at the center of the dummy outer stator core.
According to an embodiment of the present invention, the driving part may be coupled to the second base through a connection cantilever.
According to an embodiment of the invention, the entire surface of the measured magnetic pole may be projected on the side surface of the dummy stator core.
According to an embodiment of the invention, the track may be provided with a scale.
According to an embodiment of the present invention, the mounting seat may have a groove portion in which the magnetic pole under test may be mounted through the magnetic pole support template.
According to an embodiment of the invention, the generator rotor magnetic pole simulation test device may further include a plurality of limit blocks to fix the mount on the rail.
The generator rotor magnetic pole simulation test device can test the protection reliability of the rotor magnetic pole fixing, can obtain the service life of the magnetic pole fixing piece, and has the advantages of simple structure, high test speed and short detection period.
Drawings
These and/or other aspects of the invention will be apparent from and elucidated with reference to the embodiments described hereinafter, taken in conjunction with the accompanying drawings, in which:
fig. 1 is a perspective view showing a generator rotor magnetic pole simulation test apparatus according to a first embodiment of the present invention;
FIG. 2 is an exploded perspective view showing a generator rotor magnetic pole simulation test apparatus according to a first embodiment of the present invention;
fig. 3 is a perspective view showing a mount according to a first embodiment of the present invention; and
fig. 4 is a plan view showing a generator rotor magnetic pole simulation test apparatus according to a second embodiment of the present invention.
The reference numbers illustrate:
100-generator rotor magnetic pole simulation test device; 200-generator rotor magnetic pole simulation test device; 2-mounting a base; 21-groove section; 22-a clamping part; 3-a drive section; 31-connecting the cantilever; 4-simulating an inner stator iron core; 4' -simulating an outer stator core; 5-magnetic pole sample plate; 51-pole support template; 52-measured magnetic pole; 6-a limiting block; 11-a first base; 12-a second base; 13-a support base; 132-track.
Detailed Description
An embodiment of the present invention will be described in detail below with reference to the accompanying drawings, but the embodiment should not be construed as limiting the present invention. Indeed, it will be understood by those skilled in the art that various modifications and changes may be made in the present invention without departing from the scope or spirit thereof. For instance, features illustrated or described as part of one embodiment, can be used with another embodiment to yield a still further embodiment. Thus, it is intended that the present invention encompass such modifications and variations as fall within the scope of the appended claims and their equivalents.
Since in practical generators the rotor poles are fixed to the surface of the rotor frame by pole mounts in different ways, the pole mounts can produce stress fatigue during operation of the generator due to the periodically alternating loading of the stator slots on the rotor poles. In addition, because the number of the magnetic pole slots of the stator core is large, and the magnetic attraction force between the protruded tooth part on the stator core and the rotor magnetic pole is larger than the magnetic attraction force between the concave-back yoke part on the stator core and the rotor magnetic pole, in the running process of the generator, the more the number of the tooth slots on the stator core is, the larger the rotating speed of the rotor magnetic pole is, the smaller the air gap between the stator core and the rotor magnetic pole is, and the larger the stress fatigue load borne by the magnetic pole fixing piece is.
Therefore, the generator rotor magnetic pole simulation test device can simulate the alternating load borne by the rotor magnetic pole and the stator iron core in an actual generator by using a single tested magnetic pole (a plurality of tested magnetic poles) and a simulated stator iron core. Specifically, according to an embodiment of the present invention, the magnetic attraction force between the stator core and the rotor magnetic poles in the target generator (i.e., the actual target generator to be measured) is simulated by changing the number of tooth slots of the simulation stator core, the rotation speed of the simulation stator core or the measured magnetic poles, and the gap value between the simulation stator core and the measured magnetic poles.
Specifically, since the coil wound around the stator core in the target generator generates a magnetic attraction force on the rotor magnetic pole even in a load state, for the stator core and the measured magnetic pole according to the present invention, a relationship between a magnetic attraction force F1 between the measured magnetic pole and the stator core and a gap d therebetween may be first calculated according to a magnetic attraction force calculation formula F ═ F (d) between the permanent magnet and the magnetic conductive material, or a relationship between a magnetic attraction force F1 between the measured magnetic pole and the stator core and a gap d therebetween may be obtained through other reasonable tests (e.g., simulation tests), that is, a relationship between a magnetic attraction force between the stator core wound with the coil and a gap between the rotor magnetic poles and a gap therebetween in a wind turbine generator system in an inverse proportion to a magnetic attraction force between the stator core and the rotor magnetic poles and a gap therebetween in a no load state is determined. Then, in the power-on state, the electromagnetic attraction force F2 between the stator core wound with the coil and the rotor magnetic pole in the target generator in the load state is calculated according to the electromagnetic attraction force calculation formula, then the equivalent gap d1 between the measured magnetic pole and the simulated stator core can be obtained, and then the gap between the measured magnetic pole and the simulated stator core is adjusted to d1, so as to compensate the magnetic attraction force generated by the actual coil to the rotor magnetic pole in the load state by reducing the gap between the measured magnetic pole and the simulated stator core.
For example, if the stator core of the target generator has 288 slots with a nominal speed of 13r/min, the simulated stator core can be set to have 144 slots with a speed of 100r/min, and an equivalent acceleration factor of 100 × 144 ÷ (288 × 13) ≈ 4 times can be achieved within a fixed operating time. And then, increasing the measured service life of the measured magnetic pole by 4 times to obtain the service life of the magnetic pole fixing piece in the target generator.
The generator rotor magnetic pole simulation test apparatus according to the present invention will be described in detail below with reference to fig. 1 to 4.
Fig. 1 is a perspective view showing a generator rotor magnetic pole simulation test apparatus according to a first embodiment of the present invention. Fig. 2 is an exploded perspective view showing a generator rotor magnetic pole simulation test apparatus according to a first embodiment of the present invention. Fig. 3 is a perspective view showing a mount according to a first embodiment of the present invention. Fig. 4 is a plan view showing a generator rotor magnetic pole simulation test apparatus according to a second embodiment of the present invention.
Referring to fig. 1, a generator rotor magnetic pole simulation test apparatus 100 according to a first embodiment of the present invention may include: a first base 11, on which the driving part 3 is mounted on the first base 11; a second base 12, on which the magnetic pole 52 to be measured is arranged; and the simulated stator core is installed on the first base 11, and the gap value between the simulated stator core and the measured magnetic pole 52 is smaller than or equal to the target air gap value. The measured pole 52 is rotatable relative to the dummy stator core. The target air gap value is the distance between the rotor magnetic pole and the stator core in the target generator, and the gap value is determined by the target air gap value and the magnetic attraction force of the coil wound on the stator core in the target generator to the measured magnetic pole 52 in a load state.
Alternatively, as shown in fig. 1, the dummy stator core may be a dummy inner stator core 4, and a tooth slot is formed on an outer surface of the dummy inner stator core 4. The analog inner stator core 4 may be connected to the driving part 3 and drives the analog inner stator core 4 to rotate at a predetermined rate by the driving part 3. Further, the dummy inner stator core 4 may be separated from the first base 11 in height by a certain distance.
Alternatively, the dummy inner stator core 4 may be formed of the same material as that of the stator core in the target generator, and have the tooth grooves formed on the surface thereof using the same molding process as that of the stator core in the target generator. The simulated inner stator core 4 can be manufactured in a scaled down whole in proportion to the target generator. Alternatively, the size of the tooth slots of the simulated inner stator core 4 may be the same as or different from, such as proportional to, the size of the tooth slots of the stator core in the target generator.
Alternatively, the first base 11 may be square, rectangular, circular, or other suitable shape. The driving part 3 may be installed at the center of the first base 11.
Alternatively, the driving part 3 may be a driving motor. In this case, as shown in fig. 1, the analog inner stator core 4 may be installed on the rotation shaft of the driving part 3. The driving part 3 is not limited thereto but may be other suitable driving means as long as it can achieve driving of the analog inner stator core 4 at a predetermined rate.
Alternatively, the number of the second chassis 12 may be 1, as shown in fig. 1 and 2, but the number of the second chassis 12 is not particularly limited and may be variously changed according to the test purpose. Further, the material of the first chassis 11 and the second chassis 12 according to the present invention is not particularly limited, and any material having sufficient hardness and capable of satisfying the test object of the present invention may be applied to the present invention.
Alternatively, the second base 12 may be connected to the first base 11, or embedded in the first base 11, to simulate the total magnetic attraction force experienced by the rotor poles in different target generators. Preferably, the first chassis 11 and the second chassis 12 may be integrally formed.
Referring to fig. 1 to 3, the second chassis 12 may include: a support base 13 including a rail 132; and a mounting base 2 mounted on the rail 132 and capable of moving along the rail 132. Wherein, the measured magnetic pole 52 is fixed on the mounting seat 2.
Alternatively, a scale may be provided on the rail 132 of the support base 13 to indicate a gap between the measured pole 52 and the analog inner stator core 4 and to ensure accuracy in adjusting the gap. The form of the rail 132 is not limited thereto, and any structure capable of performing an indicating function and performing a guiding function may be used in the present invention.
Alternatively, the mount 2 may include a click portion 22 and a groove portion 21, and the groove portion 21 may be provided on the click portion 22. Alternatively, the click portion 22 may have a plate shape, and the groove portion 21 may be formed by separating two parallel arc-shaped plates by a predetermined distance. The measured magnetic pole 52 may be installed in the groove portion 21 through the magnetic pole support pattern 51, and the groove portion 21 may have a depth capable of ensuring that the magnetic pole support pattern 51 is not easily bounced out or moved when receiving a magnetic attraction force, the clamping portion 22 may be inserted in the rail 132, and the clamping portion 22 may move relative to the rail 132.
Although it is shown in fig. 1 that the catching portion 22 may have a plate shape, the shape of the catching portion 22 is not limited thereto, and any structure capable of catching may be applied to the present invention.
Alternatively, the measured magnetic pole 52 may be mounted on the magnetic pole support template 51 to constitute the magnetic pole template 5 in the same manner as the rotor magnetic pole in the target generator is fixed on the surface of the rotor frame. Further, the pole support template 51 may have an arc shape and may be formed of the same material as that of the yoke of the rotor pole in the target generator, and the measured pole 52 may be formed of the same material as that of the rotor pole in the target generator. Further, the size and shape of the measured pole 52 may be the same as the size and shape of the rotor pole in the target generator.
Alternatively, when a plurality of measured poles 52 are selected for the test according to the test purpose, the plurality of measured poles 52 are distributed on a circle coaxial with the dummy inner stator core 4. Further, during an experiment using the generator rotor magnetic pole simulation test apparatus according to the present invention, the measured magnetic pole 52 may be located between the top surface and the bottom surface of the simulated inner stator core 4 when viewed from the side, to ensure that the entire surface of the measured magnetic pole 52 may be projected on the side surface of the simulated inner stator core 4.
Optionally, the generator rotor magnetic pole simulation test device 100 according to the present invention may further include a plurality of limit blocks 6 to fix the mounting base 2 on the rail 132. In addition, the stop block 6 may be further secured using fasteners (e.g., bolts) to further secure the mount 2. The stopper 6 may be provided at least between the dummy inner stator core 4 and the measured pole 52 to prevent the mount 2 from moving in the rail 132 due to the magnetic attraction between the dummy inner stator core 4 and the measured pole 52 during the test, and to finely adjust the gap between the pole template 5 and the dummy inner stator core 4 and to ensure that the gap does not change during the test.
Alternatively, the generator rotor magnetic pole simulation test device 100 according to the first embodiment of the present invention proportionally converts the alternating load of the stator teeth grooves to the rotor magnetic poles during the operation of the target generator into the alternating load of the simulation inner stator core 4 to the measured magnetic poles 52 in a manner of simulating the rotation of the inner stator and the immobility of the measured magnetic poles.
Hereinafter, a generator rotor magnetic pole simulation test apparatus 200 according to a second embodiment of the present invention will be described in detail with reference to fig. 4. Since the generator rotor magnetic pole simulation testing device 200 according to the second embodiment has the same elements as the generator rotor magnetic pole simulation testing device 100 according to the first embodiment, a description thereof will be omitted here for the sake of brevity, and differences thereof will be mainly described.
According to the second embodiment of the present invention, in the generator rotor magnetic pole simulation test apparatus 200, as shown in fig. 4, the simulation stator core may be a simulation outer stator core 4 ', and the driving part 3 may be installed at the center of the simulation outer stator core 4' and may be coupled to the second base 12 through the connection cantilever 31 and drive the second base 12 to rotate at a predetermined rate. Tooth slots are formed on the inner surface of the dummy outer stator core 4'.
Although fig. 4 shows a case where the driving part 3 is connected with four second bases 12 by the connecting suspension arm, the number of the second bases 12 is not limited thereto, and for example, the driving part 3 may be connected with one second base 12 by the connecting suspension arm 31 as long as the test purpose and the test requirement can be satisfied.
Alternatively, the dummy outer stator core 4 ' may be fixed to the first base 11 by a fastener (e.g., a tension screw and a nut) in a manner of surrounding the second base 12, and separated from the first base 11 in height by a predetermined distance such that the measured pole 52 is located between the top surface and the bottom surface of the dummy outer stator core 4 ' during the test (i.e., the entire surface of the measured pole 52 may be projected on the side surface of the dummy outer stator core 4 ').
The second base 12 can simulate the gap between the outer stator core 4' and the measured magnetic pole 52 through scale adjustment, so as to simulate the total magnetic attraction force actually borne by the rotor magnetic pole in the target generator.
That is, the generator rotor magnetic pole simulation test device 200 according to the second embodiment of the present invention proportionally converts the alternating load of the stator tooth slots to the rotor magnetic poles during the operation of the target generator into the alternating load of the simulation outer stator core 4' to the measured magnetic poles 52 in a manner of simulating the rotation of the measured magnetic poles with the stationary outer stator core.
As described above, according to the embodiment of the present invention, after the manufactured dummy stator core 4 (or 4') and the measured pole 52 are mounted on the generator rotor pole simulation test apparatus at the distance d1 apart from each other, the driving part (e.g., the driving motor) is activated to drive the dummy stator core 4 (or the measured pole 52) to rotate at a high speed at a predetermined rate. Therefore, the simulation stator core 4 (or the measured magnetic pole 52) can be driven to rotate at a high speed through debugging, so that the magnetic attraction of the stator tooth slot in the target generator to the rotor magnetic pole is simulated, and the acceleration of the fatigue test is realized.
As described above, the generator rotor magnetic pole simulation test apparatus according to the embodiment of the present invention can test the protection reliability of the rotor magnetic pole fixing by simulating and accelerating the alternating load of the stator core tooth slots to the rotor magnetic poles, and can obtain the service life of the magnetic pole fixing member and shorten the determination time of the fatigue fixing member of the magnetic pole fixing member.
As described above, the generator rotor magnetic pole simulation test device according to the embodiment of the invention has the advantages of simple structure, low manufacturing cost, high test speed, short test period, objective and reliable obtained data, applicability to different types of motors, and universality.
Although a few embodiments of the present disclosure have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the disclosure, the scope of which is defined in the claims and their equivalents.
Claims (10)
1. A generator rotor magnetic pole simulation testing device, characterized in that, generator rotor magnetic pole simulation testing device includes:
a first base (11), wherein a driving part (3) is mounted on the first base (11);
a second base (12), on which second base (12) a magnetic pole (52) to be measured is arranged;
the simulated stator core is arranged on the first base (11), and the gap value between the simulated stator core and the measured magnetic pole (52) is less than or equal to a target air gap value so as to compensate the magnetic attraction of the target generator in a load state,
wherein the measured magnetic pole (52) is rotatable relative to the simulated stator core.
2. Generator rotor pole simulation test device according to claim 1, characterised in that the gap value is determined by the target air gap value and the magnetic attraction force generated by the coil wound on the stator core in the target generator under load on the pole (52) under test.
3. Generator rotor pole simulation test device according to claim 2, wherein the second mount (12) comprises:
a support base (13) comprising a rail (132);
a mount (2) mounted on the rail (132) and movable along the rail (132),
wherein the measured magnetic pole (52) is fixed on the mounting seat (2).
4. Generator rotor pole simulation test device according to claim 3, wherein the simulated stator core is a simulated inner stator core (4) and the simulated inner stator core (4) is connected to the drive section (3).
5. Generator rotor pole simulation test device according to claim 3, wherein the simulated stator core is a simulated outer stator core (4 '), the drive part (3) being mounted in the centre of the simulated outer stator core (4').
6. Generator rotor pole simulation test device according to claim 5, wherein the drive part (3) is joined to the second base (12) by a connecting cantilever (31).
7. Generator rotor pole simulation test device according to claim 4 or 6, wherein the entire surface of the measured pole (52) is projected on the side surface of the simulated stator core.
8. Generator rotor pole simulation test device according to claim 7, wherein a scale is provided on the track (132).
9. Generator rotor magnetic pole simulation test device according to claim 4 or 6, characterized in that the mounting seat (2) has a recessed portion (21), the magnetic pole under test (52) being mounted in the recessed portion (21) by means of a magnetic pole support template (51).
10. Generator rotor pole simulation test device according to claim 4 or 6, wherein the generator rotor pole simulation test device further comprises a plurality of stop blocks (6) to fix the mounting seat (2) on the rail (132).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711481800.XA CN108132192B (en) | 2017-12-29 | 2017-12-29 | Generator rotor magnetic pole simulation testing device |
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|---|---|---|---|
| CN201711481800.XA CN108132192B (en) | 2017-12-29 | 2017-12-29 | Generator rotor magnetic pole simulation testing device |
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| CN108132192A CN108132192A (en) | 2018-06-08 |
| CN108132192B true CN108132192B (en) | 2020-05-12 |
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| CN110220686B (en) * | 2019-06-26 | 2024-06-28 | 上海电气集团上海电机厂有限公司 | Test device and method for maintaining tension force of magnetic pole screw rod of rotor of diesel synchronous generator |
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| DE8701379U1 (en) * | 1987-01-29 | 1988-06-01 | Carl Schenck Ag, 6100 Darmstadt | Bracket for holding a rotor |
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| GB0906342D0 (en) * | 2009-04-15 | 2009-05-20 | Rolls Royce Plc | Apparatus and method for simulating lifetime of and/or stress experienced by a rotor blade and rotor disc fixture |
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| KR20100047724A (en) * | 2008-10-29 | 2010-05-10 | 한국전력공사 | Device for measuring loss of permanent magnet type rotating machine |
| CN101576439A (en) * | 2009-06-12 | 2009-11-11 | 哈尔滨电机厂有限责任公司 | Electromagnetic property testing simulator for hydro-generator |
| CN101975656A (en) * | 2010-09-06 | 2011-02-16 | 西安交通大学 | Experimental device for testing dynamic performance of simulated rotor of miniature gas turbine |
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