CN114460460A - High-speed high-power generator-starting opposite-dragging test system - Google Patents
High-speed high-power generator-starting opposite-dragging test system Download PDFInfo
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- CN114460460A CN114460460A CN202111557178.2A CN202111557178A CN114460460A CN 114460460 A CN114460460 A CN 114460460A CN 202111557178 A CN202111557178 A CN 202111557178A CN 114460460 A CN114460460 A CN 114460460A
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- 238000012360 testing method Methods 0.000 title claims abstract description 64
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 230000017525 heat dissipation Effects 0.000 claims description 15
- 239000012528 membrane Substances 0.000 claims description 13
- 230000001360 synchronised effect Effects 0.000 claims description 10
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 230000005294 ferromagnetic effect Effects 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 230000005622 photoelectricity Effects 0.000 claims 1
- 239000007858 starting material Substances 0.000 claims 1
- 238000011056 performance test Methods 0.000 description 6
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
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- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000006247 magnetic powder Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
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- 238000011161 development Methods 0.000 description 1
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- 238000005265 energy consumption Methods 0.000 description 1
- 238000012812 general test Methods 0.000 description 1
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- 230000005291 magnetic effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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Abstract
The invention discloses a high-speed high-power generator starting and dragging test system, which comprises: the system comprises a motor pair dragging tester, a motor driving controller, a power inverter controller, an electric parameter measuring device, a temperature measuring device and an industrial control computer; the test device comprises a motor drag tester, a motor drag test device and a motor drag test device, wherein the drag objects of the motor drag tester are a tested motor and an accompanying motor which are coaxially connected; the motor driving controller is powered by a peripheral power grid, and meanwhile, the tested motor feeds back electric energy to the peripheral power grid through the power inverter controller in the form of a generator; wherein, the motor drive controller and the electric power inverter controller are controlled by an industrial control computer; electric parameter measuring devices are arranged on circuits between the motor driving controller and the accompanying motor as well as between the power inverter controller and the tested motor, a temperature measuring device is arranged between the tested motor and the accompanying motor, and the temperature measuring device and the two electric parameter measuring devices are connected with an industrial control computer; and the industrial control computer monitors the performance and temperature parameters of the motor, and performs early warning and shutdown control.
Description
Technical Field
The invention relates to the technical field of motor performance tests, in particular to a high-speed high-power generator starting and dragging test system.
Background
Permanent Magnet Synchronous Motor (PMSM) has high servo performance and high reliability's advantage, has obtained wide application in recent years to developing to high-speed high power, the performance parameter need all be verified through the capability test to the research and development of any novel motor, combines the test result to carry out the optimal design, and general test platform mainly falls into two types at present: dynamometer test platform and to dragging formula test platform.
The dynamometer test platform mainly adopts a hysteresis dynamometer, a magnetic powder dynamometer and an eddy current dynamometer as a load instrument, the permanent magnet synchronous motor is connected with the dynamometer test platform, the motor is driven by the servo controller, and a performance test is completed by matching with a relevant parameter measurement system. The nature test platform is limited by the structural principles of a hysteresis dynamometer, a magnetic powder dynamometer and an eddy current dynamometer, is generally suitable for testing a motor with a low rotating speed and generally does not exceed 10000 r/min.
The counter-dragging type test platform adopts a mode that two permanent magnet synchronous motors are dragged, one motor is used as a tested motor, the other motor is used as an accompanying test motor, the speed of the tested motor is regulated through a servo driver, the tested motor is loaded, and an electrical parameter measuring device finishes performance parameter acquisition, for example, in a high-speed synchronous motor counter-dragging test device disclosed in the publication number of CN211086531U, the two motors are axially oppositely arranged and are connected through a coupler, but the device has higher requirement on the coaxiality of the two motors and is limited by the highest rotating speed of the accompanying test motor and the bearing of the coupler, the device is usually used for the performance test of a low-power high-rotating-speed motor, and the performance test of the high-speed high-power motor cannot be realized; the publication No. CN110275111A discloses a high-speed testing system and a control method for an ultra-high-speed alternating-current generator, which adopts an air ram turbine form to drive a tested motor, the maximum rotating speed can reach 90000 r/min-125000 r/min, but the system is suitable for the tested motor with smaller power, generally less than 1kW, and is complex in system, needs a compressed air source and is complex to control.
With the development of air bearing and magnetic suspension bearing, the ultra-high speed and high power permanent magnet synchronous motor becomes possible, and the maximum rotating speed of the permanent magnet synchronous motor which is supported by the air bearing and has 30kW, 50kW and 100kW can reach 70000r/min to 100000 r/min. How to test the performance of the full-speed-domain motor is an urgent problem to be solved.
Disclosure of Invention
In view of the above, the invention provides a high-speed high-power generator-starting drag test system, which is suitable for testing the performance test of a generator-starting with the output power of more than 30kW and the highest rotating speed of 70000r/min to 100000 r/min.
The technical scheme of the invention is as follows: a high-speed high-power generator-starting drag test system comprises: the system comprises a motor pair-dragging tester, a motor drive controller, an electric power inverter controller, an electric parameter measuring device, a temperature measuring device and an industrial control computer; the test device comprises a motor drag tester, a motor drag test device and a motor drag test device, wherein the drag objects of the motor drag tester are a tested motor and an accompanying motor which are coaxially connected;
the motor driving controller is powered by a peripheral power grid and is used for driving the accompanying motor to rotate at a high speed, and the motor to be detected runs at the same rotating speed; meanwhile, the tested motor feeds back the electric energy to a peripheral power grid through a power inverter controller in the form of a generator; wherein, the motor drive controller and the electric power inverter controller are controlled by an industrial control computer;
electric parameter measuring devices are arranged on circuits between the motor driving controller and the accompanying motor as well as between the power inverter controller and the tested motor, a temperature measuring device is arranged between the tested motor and the accompanying motor, and the temperature measuring device and the two electric parameter measuring devices are connected with an industrial control computer; the electric parameter measuring device is used for collecting performance parameters of the motor to be measured and the motor accompanied with the measurement and feeding back the performance parameters to the industrial control computer, the temperature measuring device is used for collecting stator temperatures of the motor to be measured and the motor accompanied with the measurement and feeding back the stator temperatures to the industrial control computer, and the industrial control computer can monitor the performance parameters and the temperature parameters of the motor and perform early warning and stop control when the temperature exceeds a preset value.
Preferably, the motor pair drag tester comprises: the high-speed elastic film coupler, the photoelectric rotating speed sensor and the base are arranged on the base; the tested motor and the accompanying motor are coaxially arranged on the base in a symmetrical mode through the high-speed elastic membrane coupler, the base is provided with a flange plate, the tested motor and the accompanying motor are coaxially positioned through a spigot, and the tested motor and the accompanying motor are respectively fixed with the flange plate; wherein, install photoelectric rotation speed sensor in the ring flange for the rotational speed of real-time measurement measured motor and accompanying measuring motor.
Preferably, the structure of the motor to be tested is the same as that of the motor to be tested, the permanent magnet synchronous motors supported by the air bearing are adopted, the highest rotating speed is 90000r/min, and the power is 50 kW; wherein, the motor rotor subassembly of being surveyed motor and accompanying and survey the motor adopts high-speed bullet membrane coupling joint.
Preferably, the motor rotor assembly is an elongated rotor, and is obtained by coaxially and interference-assembling permanent magnets in the axial middle of a sheath, wherein the sheath is made of a non-ferromagnetic alloy material.
Preferably, the motor under test further comprises: the motor comprises a motor shell, a stator and a bearing seat; wherein, the air bearing adopts a radial air bearing;
the axial two ends of the motor rotor assembly are respectively supported in the motor shell through radial air bearing, and the stator is coaxially sleeved in the axial middle part of the motor rotor assembly and is arranged in the motor shell in an interference fit manner; the bearing seat is pressed into the motor shell in an interference fit mode and used for supporting the radial air bearing.
Preferably, a temperature sensor is embedded in the stator and used for monitoring the temperature of the stator in the drag test process and transmitting the temperature to an industrial control computer through a temperature measuring device.
Preferably, the support width of the radial air bearing along the axial direction of the motor rotor assembly is 50 mm.
Preferably, the motor shell is of an annular columnar structure, the circumferential direction of the motor shell is provided with radiating fins, the axial direction of the motor shell is provided with a radiating channel, and heat generated by the stator is transferred to the radiating fins and then taken away by axial cooling airflow through the radiating channel.
Preferably, the high-speed elastic membrane coupling comprises: a diaphragm and an intermediate shaft; two diaphragms are symmetrically designed at two axial ends of the intermediate shaft, are of cup-shaped structures and are in interference fit with the motor rotor assembly.
Preferably, the outer diameter of the intermediate shaft is small relative to the outer diameter of the diaphragm, and the diaphragm is designed to be thick in the middle and thin on two sides.
Has the advantages that:
1. the generator starting opposite-dragging test system is suitable for testing the performance of a generator starting with the output power of more than 30kW and the highest rotating speed of 70000 r/min-100000 r/min, and adopts an energy feedback type control method, and a motor driving controller and an electric power inverter controller share a direct current bus to form an energy loop so as to save energy.
2. The tested motor and the accompanying motor can realize function exchange, when the accompanying motor is in a driving state, the tested motor can be used as a load, and when the tested motor is in the driving state, the accompanying motor can be used as the load; meanwhile, the tested motor and the accompanying motor are both permanent magnet synchronous motors supported by the air bearing, so that the performance test of the motor with the test output power of more than 30kW and the highest rotating speed of 70000r/min to 100000r/min can be accurately realized.
3. The motor rotor assembly adopts a structural form that the protective sleeve protects the permanent magnet, and certain interference magnitude is kept between the motor rotor assembly and the protective sleeve, so that the motor rotor assembly can bear larger centrifugal force without damage under high-speed rotation.
4. The specific arrangement of the support width of the radial air bearing can effectively meet the requirement of high-rotation-speed support rigidity.
5. The heat dissipation fins and the heat dissipation channel arranged on the motor shell are simple in structure and good in heat dissipation effect, heat generated by the stator can be transferred to the heat dissipation fins and then taken away by axial cooling airflow through the heat dissipation channel, and stable operation of a tested motor and an accompanying and measuring motor is guaranteed.
6. The specific design of the high-speed elastic membrane coupler solves the connection problem in power transmission of the ultrahigh-speed rotor, the bolt structure of the traditional coupler is omitted, the operation is stable and reliable, meanwhile, certain elastic deformation compensation can be realized, and elastic decoupling of the two motor rotor assemblies is realized, so that the two motor rotor assemblies can be connected into a flexible rotor through the high-speed elastic membrane coupler, and the requirement on the coaxiality of a dragging structure is lowered.
Drawings
FIG. 1 is a schematic diagram of the generator-to-generator test system according to the present invention.
Fig. 2 is a schematic structural diagram of the motor drag tester of the present invention.
Fig. 3 is a sectional view of the high-speed elastic-film coupling of the present invention.
Fig. 4 is a schematic view of a membrane form different from fig. 3 in the present invention.
The device comprises a motor shell 1, a temperature sensor 2, a stator 3, a sheath 4, a permanent magnet 5, a radial air bearing 6, a high-speed elastic membrane coupler 7, a screw 8, a photoelectric rotating speed sensor 9, a base 10, a heat dissipation channel 11, a bearing seat 12, heat dissipation fins 13, a diaphragm 14 and an intermediate shaft 15.
Detailed Description
The invention is described in detail below by way of example with reference to the accompanying drawings.
The embodiment provides a high-speed high-power generator starting and dragging test system which is suitable for testing the performance of a generator starting with the output power of more than 30kW and the highest rotating speed of 70000r/min to 100000 r/min.
As shown in fig. 1, the generator-to-trailer test system includes: the system comprises a motor pair-dragging tester, a motor drive controller, an electric power inverter controller, an electric parameter measuring device, a temperature measuring device and an industrial control computer; the test device comprises a motor drag tester, a motor drag test device and a motor drag test device, wherein the drag objects of the motor drag tester are a tested motor and an accompanying motor which are coaxially connected;
the motor driving controller is powered by a peripheral power grid and is used for driving the test motor to rotate at a high speed, and the tested motor runs at the same rotating speed as the tested motor is coaxially connected with the test motor; the tested motor feeds back electric energy to a peripheral power grid through a power inverter controller in the form of a generator; wherein, the motor drive controller and the electric power inverter controller are controlled by an industrial control computer;
electric parameter measuring devices are arranged on circuits between the motor driving controller and the accompanying motor as well as between the power inverter controller and the tested motor, a temperature measuring device is arranged between the tested motor and the accompanying motor, and the temperature measuring device and the two electric parameter measuring devices are connected with an industrial control computer; the electric parameter measuring device can collect performance parameters of the tested motor and the accompanying motor and feed the performance parameters back to the industrial control computer, and the temperature measuring device is used for collecting stator temperatures of the tested motor and the accompanying motor and feeding the stator temperatures back to the industrial control computer to prevent the tested motor and the accompanying motor from being over-heated; the industrial control computer is used as an upper computer to send a control instruction to the motor driver and the power inverter controller and is also used as a processor of data collected by the electric parameter measuring device and the temperature measuring device, after the data are transmitted to the industrial control computer, the industrial control computer carries out calculation processing, the industrial control computer mainly monitors the motor performance parameters after the motor performance parameters are processed through display of the industrial control computer, the industrial control computer firstly monitors the motor performance parameters after the temperature data are processed, and the industrial control computer controls the motor drive controller and the power inverter controller to stop when the temperature exceeds the standard;
when this play generator uses to dragging test system, motor drive controller and electric power contravariant controller sharing direct current bus form the energy return circuit, and the electric energy flow direction is: the energy consumption of the whole device depends on the efficiency of each motor driving controller, the power inverter controller, the tested motor and the accompanying and testing motor, and the electric energy utilization rate is high.
In this embodiment, as shown in fig. 2, the motor pair drag tester includes: the high-speed elastic film coupler 7, the photoelectric rotating speed sensor 9 and the base 10; the tested motor and the accompanying motor are coaxially arranged on a base 10 in a bilateral symmetry mode through a high-speed elastic membrane coupler 7, a flange plate is arranged on the base 10, the tested motor and the accompanying motor are coaxially positioned through a spigot, and the tested motor and the accompanying motor are respectively fixed with the flange plate through screws 8; wherein, install photoelectric rotation speed sensor 9 in the ring flange for the rotational speed of real-time measurement measured motor and accompanying measuring motor.
In the embodiment, the tested motor and the accompany-testing motor have the same structure (so that the structure has stronger function interchangeability, when the accompany-testing motor is in a driving state, the tested motor can be used as a load, and when the tested motor is in the driving state, the accompany-testing motor can be used as the load), permanent magnet synchronous motors supported by the air bearing are adopted, the highest rotating speed is 90000r/min, and the power is 50 kW.
In this embodiment, the motor under test (or the motor under test) includes: the motor comprises a motor shell 1, a stator 3, a motor rotor assembly, a radial air bearing 6 and a bearing seat 12; the motor rotor assembly is a slender rotor and is obtained by coaxially and interference-assembling permanent magnets 5 in the axial middle of a sheath 4, the sheath 4 is made of a non-ferromagnetic alloy material, and the non-ferromagnetic alloy material are in interference fit, so that the motor rotor assembly is mainly used for ensuring that the permanent magnets 5 do not bear overlarge tensile stress under high-speed rotation, and simultaneously ensuring that residual interference between the sheath 4 and the permanent magnets 5 can meet the requirement of torque transmission at the highest rotating speed, namely the sheath 4 and the permanent magnets 5 are not separated;
the axial two ends of the motor rotor assembly are respectively supported in the motor shell 1 through radial air bearings 6, the radial air bearings 6 used here are dynamic pressure air bearings, and the motor rotor assembly is floated by a wedge-shaped air film formed under high-speed rotation, so that high-speed rotation is realized;
the stator 3 is coaxially sleeved in the axial middle part of the motor rotor assembly and is arranged in the motor shell 1 in an interference fit manner, the temperature sensor 2 is embedded in the stator 3 and is used for monitoring the temperature of the stator 3 in the drag test process and transmitting the temperature to the industrial control computer through the temperature measuring device, so that the industrial control computer can perform early warning and stop control after overtemperature of a tested motor (or an accompanying motor);
the bearing seat 12 is pressed into the motor shell 1 in an interference fit manner and is used for supporting the radial air bearing 6 and ensuring good centering performance of an inner hole for mounting the radial air bearing 6;
the motor rotor assembly of the tested motor and the accompanying motor is connected by a high-speed elastic membrane coupler 7.
In this embodiment, the radial air bearing 6 has a support width of 50mm along the axial direction of the motor rotor assembly, so that the support rigidity at a high rotation speed can meet a set requirement.
In this embodiment, the motor housing 1 is of an annular columnar structure, the heat dissipation fins 13 are circumferentially arranged on the motor housing, the heat dissipation channel 11 is axially arranged on the motor housing, and after heat generated by the stator 3 is transferred to the heat dissipation fins 13, the heat is taken away by axial cooling airflow through the heat dissipation channel 11, so that stable operation of the tested motor and the accompanying and measuring motor is ensured.
In this embodiment, as shown in fig. 3, the high-speed elastic diaphragm coupling 7 includes: a diaphragm 14 and an intermediate shaft 15; two 14 symmetric designs of diaphragm are at the axial both ends of jackshaft 15, and diaphragm 14 is cup type structure (still can be for as shown in fig. 4 cup-shaped structure), and diaphragm 14 can be with motor rotor subassembly interference fit like this, need not bolted connection, has avoided the bolt structure among ordinary flange shaft coupling and the diaphragm shaft coupling can't bear big centrifugal force effect and produce the emergence of the phenomenon of destruction easily at high-speed transmission in-process.
In this embodiment, the outer diameter of the intermediate shaft 15 is small relative to the outer diameter of the diaphragm 14, the diameter is only phi 8mm, the rigidity is small, and the diaphragm 14 has certain deformation resistance capability, and the design that the middle is thick and the two sides are thin is adopted for the diaphragm 14, so that elasticity can be further released, and elastic decoupling of the two motor rotor assemblies is realized, so that the two motor rotor assemblies are connected into a flexible rotor through the high-speed elastic membrane coupler 7, and the stable operation can be realized between the first-order critical rotating speed and the second-order critical rotating speed.
In this embodiment, the outer diameter of the motor rotor assembly is phi 40mm, and the axial length is 300 mm.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a high-speed high-power plays generator and drags test system which characterized in that includes: the system comprises a motor pair-dragging tester, a motor drive controller, an electric power inverter controller, an electric parameter measuring device, a temperature measuring device and an industrial control computer; the test device comprises a motor drag tester, a motor drag test device and a motor drag test device, wherein the drag objects of the motor drag tester are a tested motor and an accompanying motor which are coaxially connected;
the motor driving controller is powered by a peripheral power grid and is used for driving the accompanying motor to rotate at a high speed, and the motor to be detected runs at the same rotating speed; meanwhile, the tested motor feeds back the electric energy to a peripheral power grid through a power inverter controller in the form of a generator; wherein, the motor drive controller and the electric power inverter controller are controlled by an industrial control computer;
electric parameter measuring devices are arranged on circuits between the motor driving controller and the accompanying motor as well as between the power inverter controller and the tested motor, a temperature measuring device is arranged between the tested motor and the accompanying motor, and the temperature measuring device and the two electric parameter measuring devices are connected with an industrial control computer; the electric parameter measuring device is used for collecting performance parameters of the motor to be measured and the motor accompanied with the measurement and feeding back the performance parameters to the industrial control computer, the temperature measuring device is used for collecting stator temperatures of the motor to be measured and the motor accompanied with the measurement and feeding back the stator temperatures to the industrial control computer, and the industrial control computer can monitor the performance parameters and the temperature parameters of the motor and perform early warning and stop control when the temperature exceeds a preset value.
2. The high-speed high-power starter-generator drag test system of claim 1, wherein the motor drag tester comprises: the high-speed elastic film coupling (7), the photoelectric rotating speed sensor (9) and the base (10); the tested motor and the accompanying motor are coaxially arranged on a base (10) in a symmetrical mode through a high-speed elastic membrane coupler (7), a flange plate is arranged on the base (10), the tested motor and the accompanying motor are coaxially positioned through a spigot, and the tested motor and the accompanying motor are respectively fixed with the flange plate; wherein, install photoelectricity speed sensor (9) in the ring flange for real-time measurement is surveyed the rotational speed of motor and accompany and survey the motor.
3. The high-speed high-power generator starting and dragging test system of claim 2, wherein the tested motor and the accompanying test motor have the same structure, adopt permanent magnet synchronous motors supported by air bearing, and have the maximum rotating speed of 90000r/min and the power of 50 kW; wherein, the motor rotor subassembly of being surveyed motor and accompanying and survey the motor adopts high-speed bullet membrane shaft coupling (7) to connect.
4. The generator drag test system of claim 3, wherein the rotor assembly of the motor is an elongated rotor obtained by assembling permanent magnets (5) coaxially and in an interference manner in the axial middle of the sheath (4), and the sheath (4) is made of a non-ferromagnetic alloy material.
5. The high-speed high-power starter-generator drag test system of claim 3, wherein the tested motor further comprises: the motor comprises a motor shell (1), a stator (3) and a bearing seat (12); wherein, the air bearing adopts a radial air bearing (6);
the axial two ends of the motor rotor assembly are respectively supported in the motor shell (1) through radial air bearing (6), and the stator (3) is coaxially sleeved in the axial middle part of the motor rotor assembly and is arranged in the motor shell (1) in an interference fit manner; the bearing seat (12) is pressed into the motor shell (1) in an interference fit mode and used for supporting the radial air bearing (6).
6. The high-speed high-power generator starting and generating test system as claimed in claim 5, wherein the stator (3) is embedded with a temperature sensor (2) for monitoring the temperature of the stator (3) in the test process and transmitting the temperature to the industrial control computer through a temperature measuring device.
7. The high-speed high-power generator-starter-generator drag test system according to claim 5, wherein the support width of the radial air bearing (6) along the axial direction of the motor rotor assembly is 50 mm.
8. The generator pair drag test system of high-speed high-power generator starter and generator set according to claim 5, wherein the motor housing (1) is of an annular cylindrical structure, the circumference of the motor housing is provided with heat dissipation fins (13), the axial direction of the motor housing is provided with heat dissipation channels (11), and heat generated by the stator (3) is transferred to the heat dissipation fins (13) and then is taken away by axial cooling airflow through the heat dissipation channels (11).
9. The high-speed high-power generator-generator pair-drag test system according to any one of claims 3-8, wherein the high-speed elastic-membrane coupling (7) comprises: a diaphragm (14) and an intermediate shaft (15); the two diaphragms (14) are symmetrically designed at two axial ends of the middle shaft (15), and the diaphragms (14) are of cup-shaped structures and are in interference fit with the motor rotor assembly.
10. The high-speed high-power generator-generator pair-drag test system as claimed in claim 9, wherein the outer diameter of the intermediate shaft (15) is small relative to the outer diameter of the diaphragm (14), and the diaphragm (14) is designed to be thick in the middle and thin on two sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111557178.2A CN114460460A (en) | 2021-12-18 | 2021-12-18 | High-speed high-power generator-starting opposite-dragging test system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111557178.2A CN114460460A (en) | 2021-12-18 | 2021-12-18 | High-speed high-power generator-starting opposite-dragging test system |
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| CN114460460A true CN114460460A (en) | 2022-05-10 |
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| CN202111557178.2A Pending CN114460460A (en) | 2021-12-18 | 2021-12-18 | High-speed high-power generator-starting opposite-dragging test system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203551700U (en) * | 2013-11-18 | 2014-04-16 | 中煤科工集团上海研究院 | Low-grid-capacity high-power hydro-viscous soft starter load test device |
| CN204008751U (en) * | 2014-08-25 | 2014-12-10 | 湖南工程学院 | Frequency conversion experiment power supply system in wind-power electricity generation machine testing |
| CN106841871A (en) * | 2017-02-15 | 2017-06-13 | 南京越博动力***股份有限公司 | A kind of pure electric automobile assembly is test bed to dragging |
| AU2020104199A4 (en) * | 2020-07-21 | 2021-03-04 | Shandong University Of Science And Technology | Motor power density testing device and method |
-
2021
- 2021-12-18 CN CN202111557178.2A patent/CN114460460A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203551700U (en) * | 2013-11-18 | 2014-04-16 | 中煤科工集团上海研究院 | Low-grid-capacity high-power hydro-viscous soft starter load test device |
| CN204008751U (en) * | 2014-08-25 | 2014-12-10 | 湖南工程学院 | Frequency conversion experiment power supply system in wind-power electricity generation machine testing |
| CN106841871A (en) * | 2017-02-15 | 2017-06-13 | 南京越博动力***股份有限公司 | A kind of pure electric automobile assembly is test bed to dragging |
| AU2020104199A4 (en) * | 2020-07-21 | 2021-03-04 | Shandong University Of Science And Technology | Motor power density testing device and method |
Non-Patent Citations (1)
| Title |
|---|
| 李孝云;付贝贝;刘琴;鲍国勇;: "电动汽车电机及电控***综合性能检测试验台", 设备管理与维修, no. 01, 6 January 2020 (2020-01-06) * |
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