CN108267692A - permanent magnet motor uncontrollable power generation test system based on L-abview and test method thereof - Google Patents
permanent magnet motor uncontrollable power generation test system based on L-abview and test method thereof Download PDFInfo
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- CN108267692A CN108267692A CN201810135578.6A CN201810135578A CN108267692A CN 108267692 A CN108267692 A CN 108267692A CN 201810135578 A CN201810135578 A CN 201810135578A CN 108267692 A CN108267692 A CN 108267692A
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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
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Abstract
the invention discloses an uncontrollable power generation test system of a permanent magnet motor based on L-abview and a test method thereof, wherein the test system comprises a unit to be driven, the permanent magnet motor to be tested, a brushless direct current motor and a coupler, the permanent magnet motor to be tested and the brushless direct current motor are connected through the coupler, the drive unit is respectively connected with a direct current power supply, the brushless direct current motor and a voltage and current sensor, the drive unit is connected with a computer with L-abview through a communication unit, and the permanent magnet motor to be tested is connected with a battery through an uncontrollable rectification module.
Description
Technical field
The present invention relates to the tests of motor, are exactly the uncontrollable power generation test systems of the magneto based on Labview
System and its test method.
Background technology
The process of the uncontrollable power generation of electric vehicle permanent magnet synchronous motor is：When permanent magnet synchronous motor is operated in invariable power region
When, motor operation rotating speed is significantly larger than base speed, if overcurrent, the failures such as under-voltage occur at this time, by the defencive function for the system that triggers, entirely
Transistor in bridge inverter is turned off rapidly, the weak magnetic field weakening or disappearance generated by direct-axis current, at this time motor high speed
The equivalent electromotive force of generation is higher than cell voltage, and electric current is made up of uncontrollable whole six fly-wheel diodes in inverter
It flows bridge and flows into battery, until motor reduction is equal with cell voltage to equivalent back-emf.
The high current of uncontrollable power generation process causes to impact to fly-wheel diode and battery, can reduce the reliability of system with
Service life, therefore, to permanent magnet synchronous motor, the characteristic research of uncontrollable power generation is of great significance.
At present, the uncontrollable power generation test system of traditional permanent magnet synchronous motor includes：Magneto unit（1）, driving
Unit, cell voltage current sensor, detection device, test method are：Permanent magnet synchronous motor is made using weak magnetic control strategy
It accelerates to more than base speed, power device is closed by driving unit, motor is started free reduction of speed, detected and remembered using special equipment
Recording system voltage and electric current.
Traditional test System and method for has the following problems：
（1）It is limited by motor performance, weak magnetic speed-up is limited in scope, so the uncontrollable power generation that can not test higher rotating speed point is special
Property.
（2）Uncontrollable power generation transient working characteristic can only be tested and steady operation characteristic cannot be tested.
（3）Detection device somewhat expensive, testing cost are high；For example, for accurate detection voltage current waveform and data, use
About 300,000 yuan of the price of one LeCroy WaveSurfe.
Invention content
The technical problem to be solved in the present invention is to provide a kind of uncontrollable power generation test systems of magneto based on Labview
System and its test method, the system not only increase rotating speed research range, and simple in structure, substantially reduce detection hardware investment
Cost.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：
A kind of uncontrollable power generation test system of magneto based on Labview, including unit to be driven, surveys magneto, nothing
Brush dc motor, shaft coupling, magneto to be measured are connected with brushless direct current motor by shaft coupling, the driving unit
It is connect respectively with DC power supply, brshless DC motor and voltage-current sensor, driving unit passes through communication unit and band
The computer connection of Labview, magneto to be measured are connect by uncontrollable rectification module with battery.
Driving unit is the brushless direct current motor drive system based on microprocessor, wherein microprocessor processes voltage electricity
The collected data of flow sensor, and data are sent to the computer with Labview by treated.
The voltage-current sensor detects the phase current of magneto to be measured, flows through the electric current of battery and the end of battery
Voltage.
The computer of the band Labview is equipped with motor control module, state display module.Calculating with Labview
Machine is realized by Labview softwares and the rotating speed of brushless direct current motor is controlled, and shows and record the value of detection voltage and current；
Motor control module has the function of that the method for operation, setting motor speed and control start-stop, state display module is selected to have electricity
Piezoelectricity flow curve display function.
The communication unit is the translation interface based on RS485 communication protocols.
The voltage that the DC power supply can provide is higher than battery rated voltage.
The test method of the uncontrollable power generation test system of magneto based on Labview, including simulating uncontrollable power generation
Steady operation process and transient working process, respective workflow are：
Simulate the steady-state process of uncontrollable power generation：First, DC power output voltage is arranged to be higher than battery rated voltage；So
Afterwards, the Controlling operation method of brushless direct current motor is selected, including two kinds of the control of six state square wave of three-phase and vector controlled, setting
Rotating speed size is tested, runs brushless direct current motor, at this point, brushless direct current motor, which drags magneto to be measured, operates in setting
Rotating speed, the reception of Labview softwares, recording voltage size of current simultaneously show curve, out of service after the completion of test；
Simulate the transient process of uncontrollable power generation：First, DC power output voltage is arranged to be higher than battery rated voltage,
Then, motor control module selection brushless direct current motor Controlling operation method, including six state square wave of three-phase control and
Two kinds of vector controlled, setting test rotating speed size, runs brushless direct current motor, when brushless direct current motor reaches setting speed
When, it is magneto base speed the following value to be measured to change setting speed size, and brushless direct current motor dragging is to be measured during being somebody's turn to do
Magneto first accelerates fall-back again, and the reception of Labview softwares, recording voltage size of current simultaneously show curve, and test is completed
Afterwards, it is out of service.
Using the present invention of above-mentioned technical proposal, compared with traditional technology, advantageous effect is：
Both uncontrollable power generation transient working process can have been simulated or simulated steady operation process；By the way of to dragging, breach
The limitation of magneto performance to be measured, has the characteristics that test scope is wide；Labview softwares realize brushless direct current motor simultaneously
Control and treat the function that measured motor, battery status are shown, program is simple, easy to operate, and does not need to other detection devices, inspection
It surveys cost to substantially reduce, test scope is wide, and research is contributed to improve the reliability of motorcar electric Force system.
Description of the drawings
Fig. 1 is the circuit theory schematic diagram of the embodiment of the present invention；
Fig. 2 is the computer testing surface chart with Labview；
Reference sign：1- DC power supplies；2- driving units；Computers of the 3- with Labview；4- communication units；5-
Voltage-current sensor；6- batteries；The uncontrollable rectification modules of 7-；8- magnetoes to be measured；9- shaft couplings；It is straight that 10- is brushless
Galvanic electricity motivation.
Specific embodiment
It further illustrates the present invention with reference to the accompanying drawings and embodiments.
Referring to Fig. 1, Fig. 2, the uncontrollable power generation test system of a kind of magneto based on Labview, by Permanent Magnet and Electric to be measured
Machine 8（1）, brushless direct current motor 10（1）, shaft coupling 9, driving unit 2, DC power supply 1, battery 6, uncontrollable rectification mould
Block 7, voltage-current sensor 5, communication unit 4 and the computer 3 with Labview form.
In the present embodiment, magneto 8 to be measured is the brshless DC motor of a rated voltage 310V, brush-less Dc motor
For machine 10 with treating as measured motor, DC power supply 1 can provide the voltage of highest 360V, 6 rated voltage 60V of battery, Permanent Magnet and Electric to be measured
Base speed of the machine 8 in 60V is 1100rpm.
In test system, magneto 8 and brushless direct current motor 10 to be measured are connected by shaft coupling 9, driving unit 2 with
DC power supply 1, brshless DC motor and voltage-current sensor 5 connect, the computer 3 with Labview by communication unit 4 with
Driving unit 2 connects, and uncontrollable rectification module 7 is connect with magneto 8 to be measured and battery 6.
In test process, voltage-current sensor 5 detect the phase current of magneto 8 to be measured, the electric current for flowing through battery 6 and
The terminal voltage of battery 6, by hardware Acquisition Circuit, voltage and current signal is sent to driving unit 2, and driving unit 2 is based on micro-
10 drive system of brushless direct current motor of processor, in the present embodiment, microprocessor use TMS320F28335, utilize this
The analog/digital conversion function of microprocessor（AD）Acquisition signal simultaneously calculates the size of virtual voltage electric current, and will treated data
Computer with Labview is sent to by the communication interface modules and RS232-RS485 modular converters of TMS320F28335
3, Labview softwares are shown and the value of recording voltage electric current.
As shown in Fig. 2, Labview softwares also have the function of to control brushless direct current motor 10, so, band Labview
3 test interface of computer include motor control module and state display module, wherein motor control module have selection run
Mode, setting motor speed and the function of controlling start-stop, state display module have voltage-current curve display function.
Test method, the uncontrollable power generation test system of magneto can simulate uncontrollable power generation steady operation process and transient state
The course of work, specific operation principle are as follows：
（1）Simulate the steady-state process of uncontrollable power generation：First, 1 output voltage of DC power supply is arranged to be higher than 6 specified electricity of battery
It presses, is 180V in the present embodiment；Then, the Controlling operation method that brushless direct current motor 10 is selected in motor control module is arrow
Amount control；Setting test rotating speed size, by taking 3000rpm as an example, input 3000, " will stop in " setting speed " of test interface
Only/operation ", which is dialled, puts operation, realizes the rotating speed control to brushless direct current motor 10, at this point, the dragging of brushless direct current motor 10 is treated
It surveys magneto 8 and operates in 3000rpm；At this point, Labview softwares receive, recording voltage size of current and show curve；Test
After the completion, " stopping/operation " is dialled and puts stopping, motor reduction to zero.The above uncontrollable power generation completed in fixed rotating speed is special
Property test.
（2）Simulate the transient process of uncontrollable power generation：First, 1 output voltage of DC power supply is arranged as 180V；Then,
It is vector controlled to select the Controlling operation method of brushless direct current motor 10 in motor control module；Setting test rotating speed size,
By taking 3000rpm as an example, " stopping/operation " is dialled and puts operation, when motor reaches by the input 3000 in " setting speed " of test interface
During to setting speed, change setting speed size as 8 base speed the following value of magneto to be measured, the present embodiment 1000, the mistake
In journey brushless direct current motor 10 drag magneto 8 to be measured first accelerate to 3000rpm again reduction of speed to 1000rpm, down speeding procedure
It is the transient process of uncontrollable power generation.The reception of Labview softwares, recording voltage size of current simultaneously show curve, and test is completed
Afterwards, " stopping/operation " is dialled and puts stopping, motor reduction to zero.
This system can both simulate uncontrollable power generation transient working process or simulate steady operation process；Using the side to dragging
Formula, breaches the limitation of 8 rev limit of magneto to be measured, in the present embodiment, the maximum weak magnetic of magneto 8 to be measured during 60V
Rotating speed is 1800rpm, and new system test rotating speed can reach 3000rpm, have the characteristics that test scope is wide；Labview softwares
Exploitation is with using so that testing cost substantially reduces.
The foregoing is merely specific embodiments of the present invention, but the protection of the present invention is without being limited thereto, any the art
Technical staff the thinkable variation being equal with the technical program technical characteristic or replacement, all cover the present invention protection
Within the scope of.
Claims (6)
1. a kind of uncontrollable power generation test system of magneto based on Labview, including driving unit, magneto to be measured,
Brushless direct current motor, shaft coupling, magneto to be measured are connected with brushless direct current motor by shaft coupling, it is characterised in that：
The driving unit is connect respectively with DC power supply, brshless DC motor and voltage-current sensor, and driving unit passes through logical
Letter unit is connect with the computer with Labview, and magneto to be measured is connect by uncontrollable rectification module with battery.
2. the uncontrollable power generation test system of the magneto according to claim 1 based on Labview, it is characterised in that：
The voltage-current sensor detects the phase current of magneto to be measured, flows through the electric current of battery and the terminal voltage of battery.
3. the uncontrollable power generation test system of the magneto according to claim 1 based on Labview, it is characterised in that：
The computer of the band Labview is equipped with motor control module, state display module.
4. the uncontrollable power generation test system of the magneto according to claim 1 based on Labview, it is characterised in that：
The communication unit is the translation interface based on RS485 communication protocols.
5. the uncontrollable power generation test system of the magneto according to claim 1 based on Labview, it is characterised in that：
The voltage that the DC power supply can provide is higher than battery rated voltage.
6. a kind of test method of the uncontrollable power generation test system of magneto as described in claim 1 based on Labview,
It is characterized in that：Uncontrollable power generation steady operation process and transient working process are simulated, respective workflow is：
Simulate the steady-state process of uncontrollable power generation：First, DC power output voltage is arranged to be higher than battery rated voltage；So
Afterwards, the Controlling operation method of brushless direct current motor is selected, including two kinds of the control of six state square wave of three-phase and vector controlled, setting
Rotating speed size is tested, runs brushless direct current motor, at this point, brushless direct current motor, which drags magneto to be measured, operates in setting
Rotating speed, the reception of Labview softwares, recording voltage size of current simultaneously show curve, out of service after the completion of test；
Simulate the transient process of uncontrollable power generation：First, DC power output voltage is arranged to be higher than battery rated voltage, so
Afterwards, it in the Controlling operation method of motor control module selection brushless direct current motor, controls and swears including six state square wave of three-phase
Two kinds of amount control, setting test rotating speed size, runs brushless direct current motor, when brushless direct current motor reaches setting speed
When, it is magneto base speed the following value to be measured to change setting speed size, and brushless direct current motor dragging is to be measured during being somebody's turn to do
Magneto first accelerates fall-back again, and the reception of Labview softwares, recording voltage size of current simultaneously show curve, and test is completed
Afterwards, it is out of service.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810135578.6A CN108267692A (en) | 2018-02-09 | 2018-02-09 | permanent magnet motor uncontrollable power generation test system based on L-abview and test method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810135578.6A CN108267692A (en) | 2018-02-09 | 2018-02-09 | permanent magnet motor uncontrollable power generation test system based on L-abview and test method thereof |
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| CN108267692A true CN108267692A (en) | 2018-07-10 |
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| CN201810135578.6A Pending CN108267692A (en) | 2018-02-09 | 2018-02-09 | permanent magnet motor uncontrollable power generation test system based on L-abview and test method thereof |
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Citations (6)
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|---|---|---|---|---|
| CN1338617A (en) * | 2000-08-11 | 2002-03-06 | 刘向群 | Virtual test system of permanent-magnet DC motor |
| US20040001291A1 (en) * | 2002-06-27 | 2004-01-01 | Siemens Aktiengesellschaft | Process and device for determining a run-away condition of a rotation-speed controlled, permanent-excited synchronous motor |
| CN101556307A (en) * | 2009-03-11 | 2009-10-14 | 东北大学 | Permanent magnet synchronous motor control performance automation test system |
| GB201108689D0 (en) * | 2011-05-24 | 2011-07-06 | Houghton Internat Ltd | Testing motor-generators |
| CN102520356A (en) * | 2012-01-06 | 2012-06-27 | 湖南南车时代电动汽车股份有限公司 | Drive motor test platform for electric automobile |
| CN207817163U (en) * | 2018-02-09 | 2018-09-04 | 唐山英通科技有限公司 | The uncontrollable power generation test system of magneto based on Labview |
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2018
- 2018-02-09 CN CN201810135578.6A patent/CN108267692A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1338617A (en) * | 2000-08-11 | 2002-03-06 | 刘向群 | Virtual test system of permanent-magnet DC motor |
| US20040001291A1 (en) * | 2002-06-27 | 2004-01-01 | Siemens Aktiengesellschaft | Process and device for determining a run-away condition of a rotation-speed controlled, permanent-excited synchronous motor |
| CN101556307A (en) * | 2009-03-11 | 2009-10-14 | 东北大学 | Permanent magnet synchronous motor control performance automation test system |
| GB201108689D0 (en) * | 2011-05-24 | 2011-07-06 | Houghton Internat Ltd | Testing motor-generators |
| CN102520356A (en) * | 2012-01-06 | 2012-06-27 | 湖南南车时代电动汽车股份有限公司 | Drive motor test platform for electric automobile |
| CN207817163U (en) * | 2018-02-09 | 2018-09-04 | 唐山英通科技有限公司 | The uncontrollable power generation test system of magneto based on Labview |
Non-Patent Citations (1)
| Title |
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| 刘景林 等: "不可控发电运行过程分析与系统优化", 《西北工业大学学报》, vol. 29, no. 04, pages 620 - 626 * |
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