CN208506210U - A kind of frequency converter and motor test system - Google Patents
A kind of frequency converter and motor test system Download PDFInfo
- Publication number
- CN208506210U CN208506210U CN201821038298.5U CN201821038298U CN208506210U CN 208506210 U CN208506210 U CN 208506210U CN 201821038298 U CN201821038298 U CN 201821038298U CN 208506210 U CN208506210 U CN 208506210U
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- motor
- frequency converter
- permanent magnet
- magnet synchronous
- synchronous motor
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Abstract
The utility model relates to a kind of frequency converter and motor test systems, it includes control cabinet, Induction Motor-Driven frequency converter, energy feedback unit, permanent magnet synchronous motor drives frequency converter, measured voltage current sensor, system voltage current sensor and test-bed, test-bed includes mounting seat, ac three-phase asynchronous motor, permanent magnet synchronous motor, torque sensor, shaft coupling, retarder and the movable motor mounting rack of lifting, the P of permanent magnet synchronous motor driving frequency converter, the P of N input termination energy feedback unit, N input terminal, the output end of energy feedback unit gets access to grid 380V, the utility model reduces external electrical network for the input energy of test macro, to reach energy conservation, the purpose of environmental protection.
Description
Technical field
The utility model relates to alternating current asynchronous frequency converters and threephase asynchronous machine aptitude test technical field more particularly to one
The recyclable frequency converter and threephase asynchronous machine test system recycled of kind energy.
Background technique
Existing frequency converter or motor test system and method mainly have following three kinds:
First is that directly carrying out the test of various functions with motor load, i.e., frequency converter is powered by external electrical network, output
Three connect motor, and by changing converter parameter, whether each function such as observation motor rotation is normal.Test method is most general in this
Logical, the output parameter of motor and frequency converter can not be read, is loaded immutable.
Second is that domestic frequency converter and motor load test macro use more traditional excitation system commissioning at present, compare
System can be recycled in energy, the test system of traditional excitation electromotor more consumes energy, and excitation division partial volume easily generates heat and damages need
Periodicmaintenance is wanted to replace.
Third is that using the interposed method of asynchronous machine, by the way that system motor and tested motor be coaxial and system frequency converter
With the mode of tested frequency converter common DC bus, although having reached energy regenerating and to tested frequency converter and the adjustable ginseng of motor load
Number can be read storage etc. functions, but its by a drawback just, be tested frequency converter and system frequency converter setting initial parameter need
Unanimously, motor steering on the contrary, the parameters frequency after running to the frequency of setting by change system frequency converter to tested frequency conversion
Device and motor load, that is to say, that frequency converter and motor are in Acceleration of starting and deceleration stopped process due to setting Acceleration and deceleration time
Identical, frequency is identical, thus Acceleration of starting and deceleration stopped process can not load test, an only no load test, for
It is that the most important performance of frequency converter embodies that low frequency duty, which accelerates starting and low frequency duty deceleration to stop, for frequency converter test.
Summary of the invention
The utility model in view of the above shortcomings of the prior art, provides a kind of improved frequency converter or motor test system
System is to change system frequency converter and motor in conventional systems to pass through change using permanent-magnet synchronous frequency converter and permanent magnet synchronous motor
Frequency device parameter setting permanent torque mode, so that system frequency converter and motor are in entire test process all to tested frequency converter and electricity
Machine has the load force of a constant torque, more fitting actual production and use environment, then accesses energy feedback unit feedback system
System, generated energy partial feedback power grid, utilizes again when testting frequency converter, reduces external electrical network for test macro
Input energy, to achieve the purpose that energy-saving and environmental protection.
To achieve the goals above, the utility model uses technical solution below:
A kind of frequency converter and motor test system, including control cabinet, Induction Motor-Driven frequency converter, energy feedback unit,
Permanent magnet synchronous motor drives frequency converter, measured voltage current sensor, system voltage current sensor and test-bed, the examination
Testing rack includes mounting seat, ac three-phase asynchronous motor, permanent magnet synchronous motor, torque sensor, shaft coupling, retarder and liter
Movable motor mounting rack drops, and ac three-phase asynchronous motor, torque sensor, retarder, permanent magnet synchronous motor are each attached to
Mounting seat, and ac three-phase asynchronous motor, permanent magnet synchronous motor are equipped between mounting seat go up and down movable motor respectively
Mounting bracket, ac three-phase asynchronous motor, torque sensor, retarder, permanent magnet synchronous motor axis with one heart and pass through shaft coupling
It is connected, Induction Motor-Driven frequency converter and permanent magnet synchronous motor driving frequency converter are powered and controlled by control cabinet, and control cabinet is by electricity
Net power supply 380V is connected to its input terminal, and the output of Induction Motor-Driven frequency converter terminates ac three-phase asynchronous motor, permanent-magnet synchronous
The output of motor driven frequency converter terminates permanent magnet synchronous motor, and permanent magnet synchronous motor drives P, N input termination energy of frequency converter
P, N input terminal of feedback unit, the output end of energy feedback unit get access to grid 380V, the measured voltage current sensor setting
Between ac three-phase asynchronous motor and control cabinet, the system voltage current sensor setting permanent magnet synchronous motor and control
Between cabinet.
As a preferred solution: the control cabinet uses horizontal cabinet structure, inside is equipped with control route, the control cabinet
Test fixture, dynamic torsion measurement and control instrument, 15 cun of touch screen industrial control computers, display instrument and switch button are additionally provided on table top.
As a preferred solution: the shaft coupling uses rigid flexible system connector, including flange, axle sleeve and yielding rubber, institute
The output shaft of ac three-phase asynchronous motor and permanent magnet synchronous motor is stated by the way of being flexible coupling.
As a preferred solution: the mounting seat is platform made of a steel plate, mounting seat is equipped with T-slot, installation
The flatness of pedestal is less than 0.05MM, and the weight of mounting seat is greater than ac three-phase asynchronous motor, permanent magnet synchronous motor, torque and passes
2 times of the total weight of sensor, shaft coupling, retarder and the movable motor mounting rack of lifting.
The utility model uses the principles of the present invention of above-mentioned technical proposal and beneficial effect is:
The utility model passes through Induction Motor-Driven transducer drive ac three-phase asynchronous motor, permanent magnet synchronous motor driving
Transducer drive permanent magnet synchronous motor slowly reduces the frequency of permanent magnet synchronous motor driving frequency converter in frequency converter test procedure
Rate, i.e. reduction revolving speed are equivalent to phase asynchronous at this time since ac three-phase asynchronous motor revolving speed is greater than permanent magnet synchronous motor
Motor acting, permanent magnet synchronous motor power generation.
And permanent magnet synchronous motor drives frequency converter to feed back to Induction Motor-Driven frequency converter by DC bus P, N-terminal, makes
When obtaining the test of Induction Motor-Driven frequency converter, there is portion of energy to feed back and utilizes again, reduce the energy supply of external electrical network,
Play the role of energy-saving and environment-friendly.
Further say, when permanent magnet synchronous motor driving frequency converter frequency decline, Induction Motor-Driven inverter current
Rise, slowly reducing permanent magnet synchronous motor driving frequency converter frequency makes electric current rise to Induction Motor-Driven frequency converter protective current
When, torque is maximum at this time, by torque sensor reading numerical values, so as to test out the maximum of Induction Motor-Driven frequency converter
Torque.
Detailed description of the invention
Fig. 1 is the test system structural schematic diagram of the utility model.
Fig. 2 is the structural schematic diagram of the test-bed of the utility model.
Fig. 3 is the structural schematic diagram of the control cabinet of the utility model.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model
Limitation.
As shown in Figure 1 to Figure 3 a kind of frequency converter and motor test system, including control cabinet 1, Induction Motor-Driven frequency conversion
Device 2, energy feedback unit 3, permanent magnet synchronous motor driving frequency converter 4, measured voltage current sensor 5, system voltage electric current pass
Sensor 6 and test-bed 14, the test-bed 14 include mounting seat 7, ac three-phase asynchronous motor 8, permanent magnet synchronous motor
9, torque sensor 10, shaft coupling 11, retarder 12 and the movable motor mounting rack 15 of lifting, ac three-phase asynchronous motor 8,
Torque sensor 10, retarder 12, permanent magnet synchronous motor 9 are each attached to mounting seat 7, and ac three-phase asynchronous motor 8, permanent magnetism
Synchronous motor 9 is equipped between mounting seat 7 respectively goes up and down movable motor mounting rack 15, and ac three-phase asynchronous motor 8 is turned round
Square sensor 10, retarder 12, the axis of permanent magnet synchronous motor 9 are with one heart and connected by shaft coupling 11, Induction Motor-Driven frequency conversion
Device 2 and permanent magnet synchronous motor driving frequency converter 4 are powered and are controlled by control cabinet 1, and to be connected to its defeated by power grid power supply 380V for control cabinet 1
Enter end, the output of Induction Motor-Driven frequency converter 2 terminates ac three-phase asynchronous motor 8, and permanent magnet synchronous motor drives frequency converter 4
Output termination permanent magnet synchronous motor 9, permanent magnet synchronous motor drive P, N of P, N input termination energy feedback unit 3 of frequency converter defeated
Enter end, the output end of energy feedback unit 3 gets access to grid 380V, and the setting of measured voltage current sensor 5 is different in three-phase alternating current
It walks between motor 8 and control cabinet 1, the system voltage current sensor 6 is arranged between permanent magnet synchronous motor 9 and control cabinet 1.
The control cabinet 1 uses horizontal cabinet structure, and inside is equipped with control route, also sets on the table top of the control cabinet 1
There are test fixture 20, dynamic torsion 16,15 cun of touch screen industrial control computers 17 of measurement and control instrument, display instrument 18 and switch button 19.
The shaft coupling 11 uses rigid flexible system connector, including flange, axle sleeve and yielding rubber, to guarantee measurement essence
Degree.The output shaft of the ac three-phase asynchronous motor 8 and permanent magnet synchronous motor 9 is by the way of being flexible coupling, so that works as electricity
Machine junction is there are can play buffer function when error on horizontal linear, the error range for allowing to have certain.
The mounting seat 7 is platform made of a steel plate, and mounting seat 7 is equipped with T-slot, and any surface finish installs bottom
The flatness of seat 7 is less than 0.05MM, and the weight of mounting seat 7 is greater than ac three-phase asynchronous motor 8, permanent magnet synchronous motor 9, torque
2 times of the total weight of sensor 10, shaft coupling 11, retarder 12 and the movable motor mounting rack 15 of lifting.Pedestal is firm, energy
Avoid excessive vibrations.
The movable motor mounting rack 15 of the lifting of the utility model is by 20-30mm steel and M6-M30 threaded spindle cap nut structure
At.Regulating nut height can be completed when lifting.When test, has to fastening and go up and down movable motor mounting rack, prevented
Big vibration.When installation, according to the height of motor, adjusts and go up and down movable motor mounting rack.Pay attention to concentricity, avoids sensor
It deforms and generates additional torque.
The ac three-phase asynchronous motor of the utility model connects torque sensor, can accurately read revolving speed and the torsion of motor
Power, preferably frequency converter is test in control.The utility model is using isolated electric current, the input current of voltage sensor measurement motor
And voltage.The utility model gives motor speed by computer, then passes through the frequency conversion of communication setting ACasynchronous motor drive
Device 2, so that Induction Motor-Driven frequency converter 2 realizes the control to 8 revolving speed of ac three-phase asynchronous motor.
A kind of testing method based on above-mentioned frequency converter and motor test system, includes the following steps:
A), test system is opened, frequency, the Acceleration and deceleration time of Induction Motor-Driven frequency converter 2 are set, permanent-magnet synchronous is set
Motor driven frequency converter 4 is permanent torque mode, and sets and test torque value needed for Induction Motor-Driven frequency converter 2, and setting needs
Test parameter: the upper limit alarm point including electric current, voltage, revolving speed, torque, input power, output power or efficiency starts three-phase
AC induction motor 8 and 9 synchronous rotary of permanent magnet synchronous motor；Reach the setpoint frequency of Induction Motor-Driven frequency converter 2；
B), it is slowly increased or reduces the torque parameter of permanent magnet synchronous motor driving frequency converter 4, i.e. reduction permanent magnet synchronous electric
The synchronous rotational speed of machine 9, and the frequency of Induction Motor-Driven frequency converter 2 remains unchanged, permanent magnet synchronous motor drives frequency converter 4 to set
Torque it is bigger, the energy of generation is bigger, pass through permanent magnet synchronous motor drive 4 inside inversion unit of frequency converter promoted DC bus
P, the DC voltage of N, and P, N input of P, N input terminal and energy feedback unit 3 of permanent magnet synchronous motor driving frequency converter 4
End is in parallel, and when so that permanent magnet synchronous motor driving frequency converter 4 being tested, i.e., under generating state, recovering energy for generation flows to energy
Feedback unit 3 is measured, energy feedback unit 3 sets d-c bus voltage value, when being higher than this setting value, energy feedback unit 3
In running order, the energy that will be above this setting value is converted into three-phase alternating current and is connected and feeds back to power grid by output end
Power grid, and the power supply of control cabinet 1 is power grid power supply, therefore the loop of an energy internal flow is formed, reduce the confession of external electrical network
Energy.
In step b), since 8 revolving speed of ac three-phase asynchronous motor is greater than 9 revolving speed of permanent magnet synchronous motor, two motors turn
Torque is generated between axis, is read by the torque sensor 10 of ac three-phase asynchronous motor 8 and 9 output end of permanent magnet synchronous motor
Current torque, reduction permanent magnet synchronous motor driving 4 frequency of frequency converter, which is equivalent to, gives Induction Motor-Driven frequency converter 2 loading, when
When frequency declines, 2 electric current of Induction Motor-Driven frequency converter rises, and slowly reducing permanent magnet synchronous motor driving 4 frequency of frequency converter makes
When electric current rises to Induction Motor-Driven 2 protective current of frequency converter, torque is maximum at this time, reads number by torque sensor 10
Value, to test out the peak torque of Induction Motor-Driven frequency converter 2.
A kind of installation method based on above-mentioned frequency converter and motor test system: mounting seat 7 is placed in horizontally
On face, then ac three-phase asynchronous motor 8, permanent magnet synchronous motor 9 are placed in mounting seat 7, first made phase asynchronous
The output end of motor 8 is connected to torque sensor 10 by the mode that is flexible coupling, then make the other end of torque sensor 10 also by
The mode that is flexible coupling is connected to retarder 12, and the other end of retarder 12 is connected to permanent magnet synchronous motor 9 also by the mode that is flexible coupling
Output end, in connection, constantly adjustment is mounted on ac three-phase asynchronous motor 8, the lifting activity below permanent magnet synchronous motor 9
Formula motor mounting rack 15 guarantees ac three-phase asynchronous motor 8, permanent magnet synchronous motor 9, torque sensor 10, retarder 12
The height of axis is consistent, and then each component links together according to design again.
The screw hole of ac three-phase asynchronous motor 8, permanent magnet synchronous motor 9 is reserved in mounting seat 7, and in advance by essence
Really measurement keeps the output end of ac three-phase asynchronous motor 8, permanent magnet synchronous motor 9 on the same line.
The control system of the utility model is frequency converter and motor performance experimental design, the electricity of Measurement for Inverter and motor
The performance parameters such as pressure, electric current, torque, revolving speed, input-output power, efficiency print test report by printer, draw various
Performance curve.Torque, speed probe measure the output torque and revolving speed of motor, and load uses permanent magnet synchronous motor, uses electricity
Voltage and current signals are converted to standard voltage signal by transmitter, are acquired by computer 13.It can be according to national standard or client's need
Ask customization output report and performance curve.System constructs all sensor output signals on computers and passes through various capture cards
(torque rotary speed power measurement card, A/D card) is directly accessed computer, control signal by computer by various control cards (I/O,
D/A card) direct control facility movement.
Revolving speed, torque, electric current, voltage, function needed for the utility model is capable of real-time acquisition, handles, showing, storing test
Rate, efficiency are equivalent, and the system of the utility model can test the characteristics of various motors and frequency converter, this platform is general
Type, the different tested end threephase asynchronous machine of the constant replacement of other equipment, can test the properties of different brands power motor
Data；In the different phase asynchronous frequency converter in tested end of the constant replacement of other equipment, different brands power frequency conversion can be tested
The properties data and defencive function of device；The utility model can carry out upper and lower limit alarm, alarming value to the parameter of each measurement
It can arbitrarily set.
The utility model can automatically continuously store test data or be selected manually by the wish of user
Point storage.Various settings (model, title, the precision of unit acquisition display, range, bound) of the utility model for parameter
With memory function, need to only set primary.The utility model also has historical data playback function.The utility model can be with
Test data and curve are exported in WORD or EXECL, data can be carried out to test result by printer, curve is beaten
Print.
It should be pointed out that above embodiments are only the representative examples of the utility model.The utility model can also there are many
Deformation.All essence any simple modification, equivalent change and modification to the above embodiments according to the utility model,
It is considered as belonging to the protection scope of the utility model.
Claims (4)
1. a kind of frequency converter and motor test system, it is characterised in that: including control cabinet (1), Induction Motor-Driven frequency converter
(2), energy feedback unit (3), permanent magnet synchronous motor drive frequency converter (4), measured voltage current sensor (5), system voltage
Current sensor (6) and test-bed (14), the test-bed (14) include mounting seat (7), ac three-phase asynchronous motor
(8), permanent magnet synchronous motor (9), torque sensor (10), shaft coupling (11), retarder (12) and the movable motor installation of lifting
Bracket (15), ac three-phase asynchronous motor (8), torque sensor (10), retarder (12), permanent magnet synchronous motor (9) are fixed
On mounting seat (7), and ac three-phase asynchronous motor (8), permanent magnet synchronous motor (9) are set between mounting seat (7) respectively
There is a movable motor mounting rack (15) of lifting, ac three-phase asynchronous motor (8), torque sensor (10), retarder (12), forever
The axis of magnetic-synchro motor (9) is connected with one heart and by shaft coupling (11), Induction Motor-Driven frequency converter (2) and permanent magnet synchronous motor
Driving frequency converter (4) is powered and is controlled by control cabinet (1), and control cabinet (1) is connected to its input terminal, asynchronous electricity by power grid power supply 380V
Machine drives the output of frequency converter (2) to terminate ac three-phase asynchronous motor (8), and permanent magnet synchronous motor drives the output of frequency converter (4)
It terminates permanent magnet synchronous motor (9), the P of P, N input termination energy feedback unit (3) of permanent magnet synchronous motor driving frequency converter (4),
N input terminal, the output end of energy feedback unit (3) get access to grid 380V, and the measured voltage current sensor (5) is arranged in three-phase
Between AC induction motor (8) and control cabinet (1), the system voltage current sensor (6) be arranged in permanent magnet synchronous motor (9)
Between control cabinet (1).
2. a kind of frequency converter according to claim 1 and motor test system, it is characterised in that: the control cabinet (1) is adopted
With horizontal cabinet structure, inside is equipped with control route, and test fixture (20), dynamic torsion are additionally provided on the table top of the control cabinet (1)
Measurement and control instrument (16), 15 cun of touch screen industrial control computers (17), display instrument (18) and switch button (19).
3. a kind of frequency converter according to claim 1 and motor test system, it is characterised in that: the shaft coupling (11) is adopted
With rigid flexible system connector, including flange, axle sleeve and yielding rubber, the ac three-phase asynchronous motor (8) and permanent magnet synchronous electric
The output shaft of machine (9) is by the way of being flexible coupling.
4. a kind of frequency converter according to claim 1 and motor test system, it is characterised in that: the mounting seat (7)
For platform made of a steel plate, mounting seat (7) is equipped with T-slot, and the flatness of mounting seat (7) is less than 0.05mm, installation
The weight of pedestal (7) is greater than ac three-phase asynchronous motor (8), permanent magnet synchronous motor (9), torque sensor (10), shaft coupling
(11), 2 times of the total weight of retarder (12) and the movable motor mounting rack (15) of lifting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821038298.5U CN208506210U (en) | 2018-07-02 | 2018-07-02 | A kind of frequency converter and motor test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821038298.5U CN208506210U (en) | 2018-07-02 | 2018-07-02 | A kind of frequency converter and motor test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208506210U true CN208506210U (en) | 2019-02-15 |
Family
ID=65282147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821038298.5U Expired - Fee Related CN208506210U (en) | 2018-07-02 | 2018-07-02 | A kind of frequency converter and motor test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208506210U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112485560A (en) * | 2020-11-10 | 2021-03-12 | 马允全 | Simulation variable frequency motor for variable frequency board test and variable frequency board simulation test method |
-
2018
- 2018-07-02 CN CN201821038298.5U patent/CN208506210U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112485560A (en) * | 2020-11-10 | 2021-03-12 | 马允全 | Simulation variable frequency motor for variable frequency board test and variable frequency board simulation test method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190215 Termination date: 20210702 |
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| CF01 | Termination of patent right due to non-payment of annual fee |