CN116973749A - Comprehensive test system and method for direct-current motor and direct-current generator - Google Patents
Comprehensive test system and method for direct-current motor and direct-current generator Download PDFInfo
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- CN116973749A CN116973749A CN202310944558.4A CN202310944558A CN116973749A CN 116973749 A CN116973749 A CN 116973749A CN 202310944558 A CN202310944558 A CN 202310944558A CN 116973749 A CN116973749 A CN 116973749A
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- power supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P4/00—Arrangements specially adapted for regulating or controlling the speed or torque of electric motors that can be connected to two or more different electric power supplies
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/28—Provision in measuring instruments for reference values, e.g. standard voltage, standard waveform
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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
- G01R31/34—Testing dynamo-electric machines
- G01R31/343—Testing dynamo-electric machines in operation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/38—Arrangements for feeding a single network from two or more generators or sources in parallel; Arrangements for feeding already energised networks from additional generators or sources in parallel
- H02J3/381—Dispersed generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of DC power input into DC power output
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of DC power input into DC power output
- H02M3/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/66—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output with possibility of reversal
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
Abstract
The application discloses a comprehensive test system and a method for a direct current motor and a direct current generator, wherein the comprehensive test system comprises a bidirectional direct current power supply, an inversion unit and an alternating current motor; the bidirectional direct current power supply is connected with the alternating current motor through the inversion unit; the bidirectional direct current power supply is also used for being connected with a tested direct current motor or a tested direct current generator; the alternating-current motor is used for a test motor or a test motor when the test motor or the test generator is tested; when the tested direct current generator is tested, electricity generated by the tested direct current generator can enter the inversion unit through the bidirectional direct current power supply, and the inversion unit supplies power to the alternating current motor. In the test process of the tested direct current motor and the direct current generator, the electric energy generated by the motor or the generator can supply power for the alternating current motor, the tested direct current motor and the tested direct current generator, so that the consumption of the electric energy from a power grid is reduced, and the energy-saving effect is achieved.
Description
Technical Field
The application relates to the technical field of motor testing, in particular to a comprehensive test system and method for a direct current motor and a direct current generator.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
Due to the outstanding capability of the direct current motor in the aspect of speed regulation control, the advantages of simple structure, large open-circuit torque and the like, the direct current motor is widely applied to a control system of mining machinery. It can be used in various occasions such as coal mine, metal mine, nonmetallic mine, mine metallurgy, chemical industry, cement, etc. In order to accurately and rapidly verify the overhauled performance of the mining direct current motor, the research on a comprehensive test system of the mining direct current motor and the direct current generator is particularly important.
The traditional direct current motor and generator test system adopts a diode rectification power supply or a controllable silicon rectification power supply as a test power supply of the direct current motor, the diode rectification circuit is simple, but longer rectification signals continuously pulsate, so that the smoothing effect is poorer, and the high-level ripple suppression is more difficult to realize. The silicon controlled rectifier power supply has the advantages that the silicon controlled rectifier has high on-voltage, high trigger current is needed, high-frequency adjustment cannot be performed, the electric efficiency is relatively low, and the harmonic wave of the silicon controlled rectifier is relatively large. In addition, the traditional test system adopts a direct current generator as an accompanying motor, the direct current motor has higher cost, the structure is complex, and the use and maintenance are inconvenient. In addition, the power supply of the accompanying test motor in the traditional direct-current motor and generator test system can only depend on the commercial power, but cannot supply power through electric energy generated by the motor in the test process, and cannot regulate the electric energy fed back to the power grid.
Disclosure of Invention
In order to solve the problems, the application provides a comprehensive test system and a comprehensive test method for a direct current motor and a direct current generator, wherein in the test process of the direct current motor and the direct current generator to be tested, electric energy generated by the motor or the generator can supply power for the alternating current motor, the direct current motor to be tested and the direct current generator to be tested, so that the consumption of electric energy from a power grid is reduced, and an energy-saving effect is achieved.
In order to achieve the above purpose, the application adopts the following technical scheme:
in a first aspect, a comprehensive test system for a dc motor and a dc generator is provided, including a bidirectional dc power supply, an inverter unit, and an ac motor;
the inversion unit is connected with the alternating current motor; the bidirectional direct current power supply is connected with the inversion unit and is also used for being connected with a tested direct current motor or a tested direct current generator;
the alternating-current motor is used for a test motor or a test motor when the test motor or the test generator is tested; when the load characteristic of the tested direct current generator is tested, electricity generated by the tested direct current generator can enter the inversion unit through the bidirectional direct current power supply, and the inversion unit supplies power to the alternating current motor.
In a second aspect, a test method for a dc motor and a dc generator is provided, including:
the alternating-current motor is used as an accompanying motor and is connected with a tested direct-current generator or a tested direct-current motor;
supplying power to the tested direct current generator through a bidirectional direct current power supply, supplying power to the alternating current motor through an inversion unit, and carrying out load characteristic test on the tested direct current generator or the tested direct current motor or carrying out no-load test on the tested direct current generator;
in the load characteristic test process of the tested direct current generator, electricity generated by the tested direct current generator enters the inversion unit through the bidirectional direct current power supply.
Compared with the prior art, the application has the beneficial effects that:
1. the application connects the bidirectional DC power supply with the AC motor through the inversion unit, and in the test process of the tested DC motor or the tested DC generator, the electric energy generated by the tested DC motor or the tested DC generator can supply power to the AC motor through the bidirectional DC power supply and the inversion unit, or the electric energy generated by the AC motor is supplied to the bidirectional DC power supply, and then the bidirectional DC power supply supplies power to the tested motor, thereby reducing the consumption of electric energy from the power grid and playing the energy-saving effect.
2. The application also provides a first power supply unit connected with the mains supply, and the first power supply unit is connected with a connecting circuit of the bidirectional direct current power supply and the inversion unit, so that surplus electric energy generated by the motor and the generator can enter the power grid through the first power supply unit in the test process of the tested direct current motor or the tested direct current generator, and the electric energy of the power grid is supplemented.
3. When the load characteristic test of the tested direct current motor is carried out, the kinetic energy generated by the tested direct current motor is not required to be changed into heat energy through the brake resistor to be consumed, but the energy is recovered by the alternating current motor, so that electric energy is fed back to a power grid or the tested direct current motor, and the consumption of the electric energy from the power grid is further reduced, so that the energy-saving effect is achieved.
4. Compared with the traditional test power supply mode which adopts a diode rectification power supply or a controllable silicon rectification power supply as the direct current motor, the application has the obvious advantages of higher control precision of output voltage, smaller ripple of output voltage, bidirectional flow of energy, lower harmonic wave at the network side, convenience for system integrated control and the like.
5. Compared with the traditional direct-current generator serving as a load, the test accompanying motor provided by the application has the advantages that the efficiency is higher, and higher power output can be realized. The alternating current motor is an alternating current power supply, and electronic components are not needed to be added to realize current transformation like a direct current motor and a generator, so that the loss of electric energy can be reduced better, and a higher energy-saving effect is realized.
Additional aspects of the application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the application.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.
FIG. 1 is a schematic block diagram of the disclosed system of example 1;
fig. 2 is a block diagram showing the structure of the system disclosed in embodiment 1.
Detailed Description
The application will be further described with reference to the drawings and examples.
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
Example 1
In this embodiment, a comprehensive test system of a direct current motor and a direct current generator is disclosed, as shown in fig. 1 and 2, including a bidirectional direct current power supply, an inverter unit and an alternating current motor;
the inversion unit is connected with the alternating current motor; the bidirectional direct current power supply is connected with the inversion unit;
the bidirectional direct current power supply is also used for being connected with a tested direct current motor or a tested direct current generator;
the alternating-current motor is used for a test motor or a test motor when the test motor or the test generator is tested; when the tested direct current generator is tested, electricity generated by the tested direct current generator can enter the inversion unit through the bidirectional direct current power supply, and the inversion unit supplies power to the alternating current motor.
In addition, the integrated test system for the direct-current motor and the direct-current generator disclosed in the embodiment further comprises a first power supply unit and an excitation power supply.
One end of the first power supply unit is used for being connected with the mains supply, and the other end of the first power supply unit is connected with a connecting circuit of the bidirectional direct current power supply and the inversion unit; when the first power supply unit is connected with the mains supply, the mains supply can enter the bidirectional direct current power supply and the inversion unit INU1 through the first power supply unit, the alternating current motor is powered through the inversion unit INU1, and the tested direct current motor or the tested direct current generator is powered through the bidirectional direct current power supply.
The first unit comprises a power input cabinet, a rectifier transformer and a rectifier unit; the input end of the power input cabinet is used for being connected with the mains supply, and the output end of the power input cabinet is connected with the rectifier transformer; the rectification transformer is connected with the rectification unit, and the rectification unit is connected with a connecting circuit of the bidirectional direct current power supply and the inversion unit;
when the power input cabinet is connected with the mains supply, the mains supply is input into the power input cabinet, and the mains supply input by the power input cabinet can enter the bidirectional direct current power supply and the inversion unit after being rectified and transformed by the rectification transformer and the rectification unit.
Preferably, a switch 1QF1 and a current transformer are arranged in the power input cabinet, the power on-off of the system disclosed by the embodiment is controlled through the switch, and the current of the line is detected through the current transformer.
The rectifying transformer adopts a TM1 rectifying transformer; the rectifying unit adopts an AFE four-quadrant rectifying unit.
And the excitation power supply is used for supplying power to the excitation winding of the tested direct current motor or the tested direct current generator in a separate excitation mode except the series excitation mode when the tested direct current motor or the tested direct current generator is tested.
When the alternating current motor is used as a test accompanying motor for testing the tested direct current motor or the tested direct current generator, the output shaft of the alternating current motor is connected with the output shaft of the tested direct current motor or the tested direct current generator, and the output shaft of the tested direct current motor or the tested direct current generator can be driven to rotate.
The embodiment discloses a comprehensive test system for a direct current motor and a direct current generator, which can respectively perform no-load test and load characteristic test on the direct current motor to be tested and the direct current generator to be tested.
The DC/DC bidirectional DC power supply of the IGBT power device chopping mode is adopted as the bidirectional DC power supply, and is used as a test power supply of a tested DC motor and a tested DC generator.
The alternating-current motor adopts a three-phase asynchronous alternating-current motor, and the alternating-current motor is used as a test motor for a test of a tested direct-current motor and a test motor for a test direct-current generator, so that compared with the traditional direct-current generator which is used as a load, the alternating-current motor has higher efficiency and can realize higher power output. And the asynchronous motor is an alternating current power supply, and electronic components are not needed to be added to realize current conversion like a direct current motor and a generator, so that the loss of electric energy can be reduced better, and a higher energy-saving effect is realized.
And a current measuring cabinet is arranged on a connecting circuit of the bidirectional direct current power supply, the tested direct current motor and the tested direct current generator, and the line current is obtained through the current measuring cabinet.
The embodiment also provides a control module and an acquisition module, wherein the acquisition module is used for acquiring the operation parameters of the tested direct current motor or the tested direct current generator in the test process of the tested direct current motor or the tested direct current generator.
And the controller is used for being connected with the inversion unit, the bidirectional direct current power supply and the rectification unit and controlling the working modes of the inversion unit, the bidirectional direct current power supply and the rectification unit.
When the system disclosed by the embodiment is used for carrying out no-load test on the series excited tested direct current motor, the series excited tested direct current motor is directly powered by a bidirectional direct current power supply, and the no-load test is carried out on the tested direct current motor.
When the system disclosed by the embodiment is used for carrying out no-load test on the direct current motor to be tested in the separate excitation mode except the series excitation mode, the excitation winding of the direct current motor to be tested in the separate excitation mode is supplied with power through the excitation power supply, and the armature winding of the direct current motor to be tested in the separate excitation mode is supplied with power through the bidirectional direct current power supply, so that no-load test is carried out on the direct current motor to be tested in the separate excitation mode except the series excitation mode.
When the system disclosed by the embodiment is used for testing the load performance of the tested direct current motor, the alternating current motor is used as a test accompanying motor to be mechanically coupled with the output shaft of the tested direct current motor. For the separately excited tested direct current motor, the excitation winding of the separately excited tested direct current motor is supplied with power by an excitation power supply, and the armature winding of the separately excited tested direct current motor is supplied with power by a bidirectional direct current power supply, so that the separately excited tested direct current motor operates in an electric state; for the series-excited tested direct-current motor, the series-excited tested direct-current motor is powered by a bidirectional direct-current power supply, so that the series-excited tested direct-current motor operates in an electric state; the test accompanying motor is operated by supplying power through the inversion unit, kinetic energy output by the tested direct current motor is recovered, the test accompanying motor is operated in a power generation state, electric energy generated by the alternating current motor can enter a bidirectional direct current power supply through the inversion unit, the tested direct current motor is supplied with power through the bidirectional direct current power supply, and power output by the bidirectional direct current power supply is also supplied with power for the test accompanying motor through the inversion unit; in addition, when the electricity generated by the alternating current motor can not meet the electricity demand of the tested direct current motor, the commercial power enters a two-way direct current power supply and an inversion unit through a first power supply unit to provide supplementary power for the tested direct current motor and the accompanying motor; when the electricity generated by the alternating current motor exceeds the electricity consumption requirements of the tested direct current motor and the accompanying motor, the excess electricity is surplus electric energy, and the surplus electric energy enters a commercial power grid through the first power supply unit, so that electric energy supplement is carried out on the commercial power grid.
When the system disclosed by the embodiment is used for carrying out no-load test on the tested direct-current generator, the alternating-current motor is used as a test accompanying motor to carry out mechanical coupling with the output shaft of the tested direct-current generator, the exciting winding of the tested direct-current generator is supplied with power through the exciting power supply, the test accompanying motor is supplied with power through the inversion unit, so that the test accompanying motor is driven to run in an electric state, and the test accompanying motor coupling is used for driving the tested direct-current generator to run in a power generation state to finish no-load test of the tested direct-current generator.
When the system disclosed by the embodiment is used for carrying out load performance test on the tested direct-current generator, an alternating-current motor is used as a test accompanying motor to be mechanically coupled with an output shaft of the tested direct-current generator, the exciting winding of the tested direct-current generator is supplied with power through an exciting power supply, the test accompanying motor is supplied with power through an inversion unit, the test accompanying motor is enabled to run in an electric state, the tested direct-current generator is powered through a bidirectional direct-current power supply, and the tested direct-current generator is enabled to run in a power generation state to complete load characteristic test; in the load test process of the tested direct current generator, the electricity generated by the tested direct current generator can enter the inversion unit through the bidirectional direct current power supply, and the inversion unit supplies power to the alternating current motor; in addition, the electricity generated by the tested direct current generator can also supply power to the tested direct current generator by a bidirectional direct current power supply; when the electricity generated by the tested direct current generator can not meet the use requirements of the alternating current motor and the tested direct current generator, the commercial power is supplied to the inversion unit and the bidirectional direct current power supply through the first unit, and supplementary power supply is provided for the accompanying motor and the tested direct current generator; when the electricity generated by the tested direct current generator exceeds the electricity consumption requirements of the accompanying motor and the tested direct current generator, the excess electricity is surplus electric energy, and the surplus electric energy enters the commercial power grid through the first power supply unit, so that electric energy supplement is carried out on the commercial power grid.
In the system disclosed by the embodiment, the bidirectional direct current power supply is connected with the alternating current motor through the inversion unit, and in the test process of the tested direct current motor or the tested direct current generator, the electric energy generated by the tested direct current motor or the tested direct current generator can be used for supplying power to the alternating current motor through the bidirectional direct current power supply and the inversion unit, or the electric energy generated by the alternating current motor is supplied to the bidirectional direct current power supply, and then the electric energy consumed by a power grid is reduced, so that the energy-saving effect is achieved.
In addition, the first power supply unit connected with the commercial power is further arranged, and the first power supply unit is connected with the connecting circuit of the bidirectional direct current power supply and the inversion unit, so that surplus electric energy generated by the motor and the generator can enter the power grid through the first power supply unit in the test process of the tested direct current motor or the tested direct current generator, and the electric energy of the power grid is supplemented.
When the load characteristic test of the tested direct current motor is carried out, the kinetic energy generated by the tested direct current motor is not required to be changed into heat energy through a brake resistor to be consumed, but the energy is recovered by the alternating current motor, so that electric energy is fed back to a power grid or the tested direct current motor, and the consumption of the electric energy from the power grid is further reduced, so that the energy-saving effect is achieved.
In addition, the disclosed system of this embodiment can also set up the electric capacity on the connecting circuit of two-way DC power supply and contravariant unit, stores the electric quantity through the electric capacity to can be when experimental, store the electric quantity through the electric capacity and supply power to the motor that is tested and accompany the test motor, realized the quick start of motor, and possess certain energy-conserving effect.
Example 2
In this embodiment, a test method of a direct current motor and a direct current generator is disclosed, comprising:
the alternating-current motor is used as an accompanying motor and is connected with a tested direct-current generator or a tested direct-current motor;
supplying power to the tested direct current generator through a bidirectional direct current power supply, supplying power to the alternating current motor through an inversion unit, and carrying out load characteristic test on the tested direct current generator or the tested direct current motor or carrying out no-load test on the tested direct current generator;
in the process of testing the load characteristics of the tested direct current generator, the electricity generated by the tested direct current generator enters the inversion unit through the bidirectional direct current power supply, and the electricity enters the alternating current motor after being rectified by the inversion unit.
Further, the tested direct current motor is subjected to no-load test by taking the bidirectional direct current power supply as the tested direct current motor.
Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present application and not for limiting the same, and although the present application has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the application without departing from the spirit and scope of the application, which is intended to be covered by the claims.
Claims (10)
1. A comprehensive test system of a direct current motor and a direct current generator is characterized by comprising a bidirectional direct current power supply, an inversion unit and an alternating current motor;
the inversion unit is connected with the alternating current motor; the bidirectional direct current power supply is connected with the inversion unit and is also used for being connected with a tested direct current motor or a tested direct current generator;
the alternating-current motor is used for a test motor or a test motor when the test motor or the test generator is tested; when the load characteristic of the tested direct current generator is tested, electricity generated by the tested direct current generator can enter the inversion unit through the bidirectional direct current power supply, and the inversion unit supplies power to the alternating current motor.
2. The integrated test system of a dc motor and a dc generator according to claim 1, further comprising a first power supply unit, wherein one end of the first power supply unit is connected to a mains supply, and the other end of the first power supply unit is connected to a connection circuit between the bidirectional dc power supply and the inverter unit; the mains supply can enter the bidirectional direct current power supply and the inversion unit through the first power supply unit.
3. The integrated test system of a dc motor and dc generator of claim 2 wherein the power generated by the dc generator under test is also able to enter the first power supply unit via the bi-directional dc power supply and to enter the utility power via the first power supply unit during the load characteristic test of the dc generator under test.
4. The integrated test system of a dc motor and a dc generator according to claim 2, wherein the power generated by the ac motor is supplied to the first power supply unit and the bi-directional dc power supply through the inverter unit and supplied to the utility power through the first power supply unit when the load characteristic of the dc motor to be tested is tested.
5. The integrated test system of a dc motor and a dc generator according to claim 2, wherein the first power supply unit includes a power input cabinet, a rectifier transformer, and a rectifier unit; the input end of the power input cabinet is used for being connected with the mains supply, and the output end of the power input cabinet is connected with the rectifier transformer; the rectification transformer is connected with the rectification unit, and the rectification unit is connected with a connection circuit of the bidirectional direct current power supply and the inversion unit.
6. The integrated test system of a dc motor and dc generator of claim 1 further comprising an excitation power source for powering the excitation windings of the dc motor or the dc generator under test in a separate excitation mode other than the series excitation mode.
7. The integrated test system of claim 1, wherein when the ac motor is used as a test motor for testing a dc motor or a dc generator, the output shaft of the ac motor is connected to the output shaft of the dc motor or the dc generator and is capable of rotating the output shaft of the dc motor or the dc generator.
8. The integrated test system for a DC motor and a DC generator of claim 1 wherein the bi-directional DC power source is a DC/DC bi-directional DC power source employing IGBT power device chopping.
9. A test method for a dc motor and a dc generator, comprising:
the alternating-current motor is used as an accompanying motor and is connected with a tested direct-current generator or a tested direct-current motor;
supplying power to the tested direct current generator through a bidirectional direct current power supply, supplying power to the alternating current motor through an inversion unit, and carrying out load characteristic test on the tested direct current generator or the tested direct current motor or carrying out no-load test on the tested direct current generator;
in the load characteristic test process of the tested direct current generator, electricity generated by the tested direct current generator enters the inversion unit through the bidirectional direct current power supply.
10. A method of testing a dc motor and a dc generator as claimed in claim 9, wherein the dc motor is tested by a bi-directional dc power supply as the dc motor under test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310944558.4A CN116973749A (en) | 2023-07-28 | 2023-07-28 | Comprehensive test system and method for direct-current motor and direct-current generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310944558.4A CN116973749A (en) | 2023-07-28 | 2023-07-28 | Comprehensive test system and method for direct-current motor and direct-current generator |
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| CN116973749A true CN116973749A (en) | 2023-10-31 |
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| CN202310944558.4A Pending CN116973749A (en) | 2023-07-28 | 2023-07-28 | Comprehensive test system and method for direct-current motor and direct-current generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119224608A (en) * | 2024-09-30 | 2024-12-31 | 中国煤炭科工集团太原研究院有限公司 | A test device for detecting and testing the electric drive system of a mining battery |
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2023
- 2023-07-28 CN CN202310944558.4A patent/CN116973749A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119224608A (en) * | 2024-09-30 | 2024-12-31 | 中国煤炭科工集团太原研究院有限公司 | A test device for detecting and testing the electric drive system of a mining battery |
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