CN108152735B - Distributed multi-phase motor test system - Google Patents
Distributed multi-phase motor test system Download PDFInfo
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- CN108152735B CN108152735B CN201711242116.6A CN201711242116A CN108152735B CN 108152735 B CN108152735 B CN 108152735B CN 201711242116 A CN201711242116 A CN 201711242116A CN 108152735 B CN108152735 B CN 108152735B
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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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- 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
- G01R31/005—Testing of electric installations on transport means
- G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
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Abstract
The invention relates to the field of motor testing, and discloses a distributed multi-phase motor testing system which comprises a power change module, an assembly module and a testing module, wherein the power change module comprises a plurality of distributed power converters; the assembling module comprises a workbench, a fixing device and a moving device, wherein the fixing device comprises a fixing plate, a hydraulic tensioning device and a clamping piece; the test module comprises a rotating speed and torque measuring device, a temperature sensor, a vibration sensor and an upper computer monitoring device. The invention can simulate the working states of the motor of the pure electric vehicle under different working conditions, so that the collected data is richer; the current or voltage sensor is arranged, so that the current and voltage of the motor can be monitored in real time; meanwhile, in the testing process, the assembling module can convey and assemble the motor to be tested, and the testing of the motor to be tested is carried out more stably, interference factors are eliminated, more real data are measured, and the purpose of detecting performance is achieved.
Description
Technical Field
The invention relates to the field of motor testing, in particular to a distributed multi-phase motor testing system.
Background
Along with the development of society, low-carbon vehicles are more and more advocated by people, and electric vehicles belong to a low-carbon vehicle which is currently researched intensively and has a wide development prospect, wherein a motor driving system is used as a very important part for the research and development of the electric vehicles, the testing work of the motor driving system is an important means for improving and verifying the performance of the motor driving system, especially a permanent magnet synchronous motor, the motor driving system is widely applied to pure electric vehicles and pure electric vehicles due to the advantages of high power density, high efficiency, small rotor loss and the like, but good external power characteristics are achieved, the offline detection of the motor is indispensable, and the offline detection of each motor is required to judge whether the motor is a qualified product or not in order to verify whether the processing technology meets the consistency condition or not due to the difference of the consistency of the processing technology of the motor, the testing method has the advantages that the consistency of product loading is further achieved, so that the professional offline testing of the external characteristics of the motor for the electric vehicle is of great significance, the testing method also belongs to a necessary step of motor manufacturing, the testing before delivery of the motor in the prior art is generally only simple operation condition observation, the testing parameters are few, the testing precision is low, and the qualification rate of the motor in actual use is difficult to guarantee.
At present, the main test contents of a motor of a pure electric vehicle comprise a motor three-phase direct current resistance test, a voltage withstanding test, an idle speed test, an idle current test, a power torque test, a temperature rise test, an efficiency test, a locked rotor test, an overload capacity test, a highest working speed, an overspeed test, a durability test and the like. In China, a motor of a pure electric vehicle is mainly debugged on the whole vehicle, but is limited by the space of the whole vehicle, faults are difficult to detect and parts are difficult to replace after faults and problems occur, the workload is high, meanwhile, the field debugging of the whole vehicle is influenced by roads and weather, the test period is long, the vehicle is unstable, and potential safety hazards exist. In view of this, a research and development organization in China develops a bench type test device, but the prior art bench type test device cannot well complete a given test due to design reasons.
Disclosure of Invention
The invention provides a distributed multi-phase motor test system aiming at the problems of long test period, few functions and potential safety hazards in the prior art.
In order to solve the above technical problems, the present invention is solved by the following technical solutions.
A distributed multi-phase motor test system comprises a power change module, an assembly module and a test module; the power change module comprises a plurality of distributed power converters, each distributed power converter is connected with one phase of the motor, and the distributed power converters are connected with the test module through a communication bus;
the assembly module comprises a workbench, a fixing device and a moving device, and the moving device and the fixing device are arranged on the workbench; the front side and the rear side of the workbench are respectively provided with a fixing device, the fixing devices comprise a fixing plate, a hydraulic tensioning device and a clamping piece, the hydraulic tensioning device is fixed on the fixing plate and comprises a rotating shaft, a connecting rod and a hydraulic tensioning cylinder, the left side and the right side of the hydraulic tensioning cylinder are respectively connected with the connecting rod for rotating, and the connecting rods are respectively connected with the rotating shaft; the clamping pieces are nested and fixed on the rotating shaft, the rotating shaft drives the clamping pieces to move, and the clamping pieces are matched with each other to fix the motor to be tested; the moving device comprises a fixed seat, a conveying roller and a conveying belt, wherein the fixed seat is arranged on two sides of the conveying belt, and the conveying roller drives the conveying belt to roll;
the testing module comprises a rotating speed and torque measuring device, a temperature sensor, a vibration sensor and an upper computer monitoring device, wherein the torque measuring device, the temperature sensor and the vibration sensor are all connected with the upper computer monitoring device, and the upper computer monitoring device is used for operating and displaying running data; the rotating speed and torque measuring device is used for measuring rotating speed and torque parameters of the measured motor; the temperature sensor is used for measuring the temperature of the measured motor during working; the vibration sensor is used for detecting the vibration degree of the motor during working.
As preferred, the folder includes swinging boom and locking arm, and the rotation axis is connected to the lower extreme of swinging boom, and the articulated locking arm of connecting is established to the upper end of swinging boom, and the locking arm is the arc, and the inboard of locking arm is equipped with anti-skidding line, and the swinging boom is used for pressing from both sides tight motor both sides that await measuring, and the locking arm is used for fixing the top of the motor that awaits measuring, and simultaneously, the inboard anti-skidding line of locking arm plays anti-skidding effect.
Preferably, a distance sensor is arranged on the inner side of the locking arm and used for measuring the distance between the locking arm and a motor to be measured, a driving shaft is fixedly connected to the lower end of the locking arm and connected with a driving control motor, the driving motor judges operation according to measured distance data, whether the motor to be measured exists or not is judged according to the distance, and if the distance reaches the range, the motor is controlled to drive the driving shaft to move and drive the locking arm until the locking arm fastens the motor to be measured.
Preferably, the fixing base comprises 2 limiting clamping seats, screw holes are formed in the lower ends of the limiting clamping seats, the screw holes are adjusted and fixed through bolts, the limiting clamping seats are L-shaped, a limiting cavity is formed between the 2 limiting clamping seats, and the limiting cavity is used for limiting one end of the motor to be detected and used for assisting the motor to be detected to be positioned and supported.
Preferably, the test module further comprises a current-voltage sensor, the current-voltage sensor is connected between the distributed power converter and the motor to be tested, the current-voltage sensor is connected with a power analyzer, the power analyzer is connected with a display and used for displaying the current of the motor to be tested under different powers and displaying the current, and an operator can conveniently and visually observe and record the current.
Preferably, the device further comprises a cooling device, wherein the cooling device comprises a water cooler and an air cooler, and the water cooler is used for cooling the internal temperature of the tested motor; the air cooling machine is used for assisting in cooling the external temperature of the tested motor, the air cooling machine and the tested motor are matched with each other, the tested motor to be tested can be cooled better, next testing work can be carried out rapidly, and the working efficiency is improved.
Preferably, the test module further comprises a circuit protection device, the circuit protection device is connected between the tested motor and the power supply, and the circuit protection device can effectively protect the running of the tested motor under the maximum test power and prevent the damage caused by short circuit.
Due to the adoption of the technical scheme, the invention has the remarkable technical effects that: the invention can simulate the working states of the motor of the pure electric vehicle under different working conditions, so that the collected data is richer; the current or voltage sensor is arranged, so that the current and voltage of the motor can be monitored in real time; meanwhile, in the testing process, the assembling module can convey and assemble the motor to be tested, and the testing of the motor to be tested can be carried out more stably, interference factors are eliminated, more real data are measured, and the purpose of detecting performance is achieved.
Drawings
FIG. 1 is a schematic diagram of a distributed multi-phase motor test system framework according to the present invention;
FIG. 2 is a schematic diagram of an assembly module structure in a distributed multi-phase motor test system according to the present invention;
fig. 3 is a schematic structural diagram of a fixing base in the distributed multi-phase motor testing system according to the present invention.
In the figure: 1-workbench, 21-fixing plate, 221-rotating shaft, 222-connecting rod, 223-hydraulic tensioning cylinder, 23-rotating arm, 24-locking arm, 25-limiting clamping seat, 251-bolt, 26-conveying belt and 27-conveying roller.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1 to 3, a distributed multi-phase motor test system includes a power variation module, an assembly module, and a test module;
the power change module comprises a plurality of distributed power converters, each distributed power converter is connected with one phase of the motor, and the distributed power converters are connected with the test module through a communication bus;
the assembly module comprises a workbench 1, a fixing device and a moving device, wherein the moving device and the fixing device are arranged on the workbench 1; the front side and the rear side of the workbench 1 are respectively provided with a fixing device, the fixing devices comprise a fixing plate 21, a hydraulic tensioning device and a clamping piece, the hydraulic tensioning device is fixed on the fixing plate 21 and comprises a rotating shaft 221, a connecting rod 222 and a hydraulic tensioning cylinder 223, the left side and the right side of the hydraulic tensioning cylinder 223 are respectively connected with the connecting rod 222 for rotating motion, and the connecting rod 222 is respectively connected with the rotating shaft 221; the clamping pieces are nested and fixed on the rotating shaft 221, the rotating shaft 221 drives the clamping pieces to move, and the clamping pieces are matched with each other to fix the motor to be tested; the moving device comprises a fixed seat, a conveying roller 27 and a conveying belt 26, the fixed seat is arranged on two sides of the conveying belt 26, and the conveying roller 27 drives the conveying belt 26 to roll;
the testing module comprises a rotating speed and torque measuring device, a temperature sensor, a vibration sensor and an upper computer monitoring device, wherein the torque measuring device, the temperature sensor and the vibration sensor are all connected with the upper computer monitoring device, and the upper computer monitoring device is used for operating and displaying running data; the rotating speed and torque measuring device is used for measuring rotating speed and torque parameters of the measured motor; the temperature sensor is used for measuring the temperature of the measured motor during working; the vibration sensor is used for detecting the vibration degree of the motor during working.
The folder includes swinging boom 23 and locking arm 24, and rotation axis 221 is connected to the lower extreme of swinging boom 23, and articulated connection locking arm 24 is established to the upper end of swinging boom 23, and locking arm 24 is the arc, and the inboard of locking arm 24 is equipped with anti-skidding line, and swinging boom 23 is used for pressing from both sides tight motor both sides that await measuring, and locking arm 24 is used for fixing the top of the motor that awaits measuring, and simultaneously, the inboard anti-skidding line of locking arm 24 plays anti-skidding effect.
The inside distance sensor that is equipped with of locking arm 24, the distance sensor is used for measuring and is surveyed the distance between the motor, locking arm 24 lower extreme fixedly connected with drive shaft, and the drive shaft connection has drive control motor, and drive motor judges the operation according to the distance data that record, at first judges whether to wait to survey the motor and exist according to the distance, if reach the distance scope, then control motor drive shaft motion and drive locking arm 24, until locking arm 24 straining motor that awaits measuring.
The fixing base includes 2 spacing cassette 25, and spacing cassette 25 lower extreme is equipped with the screw, adjusts fixedly through bolt 251 between the screw, and spacing cassette 25 is L shape, forms spacing cavity between 2 spacing cassette 25, and spacing cavity is used for the one end of spacing motor that awaits measuring for supplementary motor that awaits measuring is fixed a position and is supported.
The testing module further comprises a current-voltage sensor, the current-voltage sensor is connected between the distributed power converter and the motor to be tested, the current-voltage sensor is connected with the power analyzer, the power analyzer is connected with a display and used for displaying the current of the motor to be tested under different powers and displaying the current, and an operator can conveniently observe and record the current visually.
The cooling device comprises a water cooler and an air cooler, wherein the water cooler is used for cooling the internal temperature of the tested motor; the air cooling machine is used for assisting in cooling the external temperature of the tested motor, the air cooling machine and the tested motor are matched with each other, the tested motor to be tested can be cooled better, next testing work can be carried out rapidly, and the working efficiency is improved.
The test module also comprises a circuit protection device, the circuit protection device is connected between the tested motor and the power supply, and the circuit protection device can effectively protect the running of the tested motor under the maximum power test and prevent the damage caused by short circuit.
When the motor fixing device is used, a motor to be detected is placed at one end of the conveying belt 26, then the motor to be detected is conveyed to a position near the fixing seat through the conveying belt 26, the motor to be detected is adjusted to a central position through the limiting clamping seat 25, and the motor to be detected is fixed through the bolt 251; then, fixing the whole motor to be tested through a fixing device, and finally entering a testing module; during testing, testing the motor to be tested by adjusting the power of the distributed power converter, and meanwhile, collecting and collecting data of the motor to be tested during testing through the speed and torque measuring device, the temperature sensor, the vibration sensor and the current and voltage sensor; after the test is finished, the motor to be tested is cooled by the water cooling machine and the air cooling machine of the cooling device, so that the influence of the next test is reduced to the minimum, the next test is rapidly carried out, and the test efficiency is improved.
The invention can simulate the working states of the motor of the pure electric vehicle under different working conditions, so that the collected data is richer; the current or voltage sensor is arranged, so that the current and voltage of the motor can be monitored in real time; meanwhile, in the testing process, the assembling module can convey and assemble the motor to be tested, and the testing of the motor to be tested can be carried out more stably, interference factors are eliminated, more real data are measured, and the purpose of detecting performance is achieved.
In summary, the above is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in the claims of the present invention should be covered by the claims of the present invention.
Claims (4)
1. A distributed multi-phase motor test system comprises a power change module, an assembly module and a test module, and is characterized in that:
the power change module comprises a plurality of distributed power converters, each distributed power converter is connected with one phase of the motor, and the distributed power converters are connected with the test module through a communication bus;
the assembling module comprises a workbench (1), a fixing device and a moving device, wherein the moving device and the fixing device are arranged on the workbench (1); the front side and the rear side of the workbench (1) are respectively provided with a fixing device, the fixing devices comprise a fixing plate (21), a hydraulic tensioning device and a clamping piece, the fixing plate (21) is fixedly provided with the hydraulic tensioning device, the hydraulic tensioning device comprises a rotating shaft (221), a connecting rod (222) and a hydraulic tensioning cylinder (223), the left side and the right side of the hydraulic tensioning cylinder (223) are respectively connected with the connecting rod (222) for rotating, and the connecting rods (222) are respectively connected with the rotating shaft (221); the clamping pieces are nested and fixed on the rotating shaft (221), the rotating shaft (221) drives the clamping pieces to move, and the clamping pieces are matched with each other to fix the motor to be tested; the moving device comprises a fixed seat, a conveying roller (27) and a conveying belt (26), the fixed seat is arranged on two sides of the conveying belt (26), and the conveying roller (27) drives the conveying belt (26) to roll;
the testing module comprises a rotating speed and torque measuring device, a temperature sensor, a vibration sensor and an upper computer monitoring device, wherein the torque measuring device, the temperature sensor and the vibration sensor are all connected with the upper computer monitoring device, and the upper computer monitoring device is used for operating and displaying running data; the rotating speed and torque measuring device is used for measuring rotating speed and torque parameters of the measured motor; the temperature sensor is used for measuring the temperature of the measured motor during working; the vibration sensor is used for detecting the vibration degree of the motor during working; the clamping piece comprises a rotating arm (23) and a locking arm (24), the lower end of the rotating arm (23) is connected with a rotating shaft (221), the upper end of the rotating arm (23) is hinged with the locking arm (24), the locking arm (24) is arc-shaped, and anti-skid grains are arranged on the inner side of the locking arm (24); a distance sensor is arranged on the inner side of the locking arm (24) and used for measuring the distance between the locking arm and a motor to be measured, a driving shaft is fixedly connected to the lower end of the locking arm (24), the driving shaft is connected with a driving control motor, and the driving motor judges to operate according to the measured distance data; the fixing base comprises 2 limiting clamping seats (25), screw holes are formed in the lower ends of the limiting clamping seats (25), the screw holes are fixedly adjusted through bolts (251), the limiting clamping seats (25) are L-shaped, limiting cavities are formed between the 2 limiting clamping seats (25), and the limiting cavities are used for limiting one ends of motors to be tested.
2. A distributed multi-phase electric motor test system according to claim 1, wherein: the testing module further comprises a current-voltage sensor, the current-voltage sensor is connected between the distributed power converter and the motor to be tested, the current-voltage sensor is connected with a power analyzer, and the power analyzer is connected with a display.
3. A distributed multi-phase electric motor test system according to claim 1, wherein: the cooling device comprises a water cooler and an air cooler, wherein the water cooler is used for cooling the internal temperature of the tested motor; the air cooling machine is used for assisting in cooling the external temperature of the tested motor.
4. A distributed multi-phase electric motor test system according to claim 1, wherein: the test module also comprises a circuit protection device which is connected between the tested motor and the power supply.
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| CN113129673A (en) * | 2021-03-24 | 2021-07-16 | 广东三向智能科技股份有限公司 | Intelligent sensor technology application training equipment |
| CN113432848A (en) * | 2021-05-25 | 2021-09-24 | 深圳市科力尔智能控制技术有限公司 | Motor automatic production system assembly method and test production system |
| CN114400611B (en) * | 2022-01-16 | 2024-03-01 | 莆田学院 | Short-circuit protection device with GaN device convenient for warning |
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