CN202710309U - Generator grid-connection transferring test bed - Google Patents
Generator grid-connection transferring test bed Download PDFInfo
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- CN202710309U CN202710309U CN 201220383499 CN201220383499U CN202710309U CN 202710309 U CN202710309 U CN 202710309U CN 201220383499 CN201220383499 CN 201220383499 CN 201220383499 U CN201220383499 U CN 201220383499U CN 202710309 U CN202710309 U CN 202710309U
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Abstract
A generator grid-connection transferring test bed comprises a main test circuit and a brake, wherein the brake is connected with a loading motor which is connected with a rotation speed torque instrument, the rotation speed torque instrument is connected with one end of a device to be tested, and the other end of the device to be tested is connected with a right-side rotation speed torque instrument which is connected with a speed regulation motor; the generator grid-connection transferring test bed also comprises an inversion unit, an excitation unit and a frequency converter, wherein the excitation unit is used for respectively controlling the excitation current and the torque current of the motor according to the directional distance of a magnetic field; and the frequency converter is used for controlling the feedback energy. The generator grid-connection transferring test bed is advantageous in that the automatic test is realized, the test process is safe, highly-efficient and energy-saving, and the monitoring of the running state of a frequency conversion unit is achieved.
Description
Technical field
The utility model relates to a kind of testing table that detects the drive apparatus such as all kinds of motors, fluid coupling, all kinds of shaft couplings, relates in particular to a kind of generator connecting in parallel with system and transfers testing table.
Background technology
At present, detect the testing table of the drive apparatus such as all kinds of motors, fluid coupling, all kinds of shaft couplings, mainly adopt Control experiment hand-manipulated, artificial meter reading meter record test figure comprises overcurrent test, temperature rise test, overpotential test etc.; There is obvious defective in this manual test: inefficiency, and labour intensity is larger, and test accuracy is not high, and the reliability of test figure is subject to the impact of human factor, and along with the raising of testing requirements, existing this testing table can not meet the demands.
Summary of the invention
The purpose of this utility model provides a kind of automatically test and generator connecting in parallel with system that test process is safe, efficient, energy-conservation is transferred testing table.
For achieving the above object, the technical scheme that adopts of the utility model is:
A kind of generator connecting in parallel with system is transferred testing table, comprising: be used for driving the capable test major loop in zero load, load and hypervelocity duty of all kinds of motors, its characteristics are: also comprise detent, detent connects loading motor, loading motor connects the rotational speed and torque instrument, the rotational speed and torque instrument connects Devices to test one end, and the Devices to test other end connects right side rotational speed and torque instrument, and right side rotational speed and torque instrument connects buncher; Described generator connecting in parallel with system is transferred testing table and is comprised that also adopting the IGBT power device is the inversion unit of inverter, and it is input as interchange, is output as direct current; Described generator connecting in parallel with system is transferred testing table and is also comprised according to field orientation away from the excitation unit of respectively exciting current and the torque current of motor being controlled; Described generator connecting in parallel with system is transferred testing table and is also comprised the frequency converter that carries out feedback energy control.
The utility model has the advantages that: one, the inversion unit in the utility model adopts the IGBT power device, and it is input as interchange, is output as direct current, and it can not only Eliminate highter harmonic, and can improve the system power factor, has remarkable dynamic property; Active Front End has certain boost function in addition, can compensator transformer and the voltage drop of frequency converter inside, guarantee that frequency converter output voltage reaches rated voltage.
Two, the utility model uses the space vector control technology to control away from exciting current and the torque current to motor respectively according to field orientation, thereby reach the purpose of control motor torque, utilize the superior dynamic adjustments performance of Direct Current Governor System, satisfy the control requirement of system's rotating speed and torque.
Three, employ energy close-loop feedback automatic control technology in present system, two effects of carrying out the frequency converter of feedback energy control be exactly when tested motor is tested the energy of generation feed back to again in the direct current network, play energy-conservation effect.
Four, has system's communication interface function, can monitor the converter unit running status, as: output frequency, motor speed, current of electric, motor torque, power of motor, electric moter voltage, dc tache voltage, frequency converter temperature, motor temperature, current failure code etc.
Description of drawings
Fig. 1 is experiment table transmission schematic diagram in the utility model;
Fig. 2 is experiment table electrical principle schematic diagram in the utility model;
Fig. 3 is feedback control principle figure in the utility model.
In the accompanying drawing
1, detent 2, loading motor 3, rotational speed and torque instrument 4, Devices to test 5, rotational speed and torque instrument 6, buncher
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is further described:
A kind of generator connecting in parallel with system is transferred testing table, as shown in Figure 1, 2, 3, comprising: be used for driving the capable test major loop in zero load, load and hypervelocity duty of all kinds of motors; Also comprise detent 1, detent 1 connects loading motor 2, and loading motor 2 connects rotational speed and torque instrument 3, and rotational speed and torque instrument 3 connects Devices to test 4 one ends, and Devices to test 4 other ends connect right side rotational speed and torque instrument 5, and right side rotational speed and torque instrument 5 connects buncher 6; Described generator connecting in parallel with system is transferred testing table and is comprised that also adopting the IGBT power device is the inversion unit of inverter, and it is input as interchange, is output as direct current; Described generator connecting in parallel with system is transferred testing table and is also comprised according to field orientation away from the excitation unit of respectively exciting current and the torque current of motor being controlled; Described generator connecting in parallel with system is transferred testing table and is also comprised the frequency converter that carries out feedback energy control.
The beneficial effects of the utility model are: one, easy to maintenance and efficient is high, comprehensive drive apparatus experiment table adopts direct current motor and generator, adopts inverter to be convenient to exchange and is incorporated into the power networks.
Two, the DC control harmonic current is little, adopts active rectifier system, and the input side current harmonics can be controlled in 5%, and is very little to electric network pollution.
Three, power factor is high, and traditional motor experimental bench testing program, the power factor during moving row and adopt the power factor of Active Front End mode can be near 1 generally about 0.7, and power factor (PF) is controlled.
Four, energy-saving effect is obvious, and without impacting and polluting, the inversion unit of motor-driven and energy feedback adopts the mode of public exchange bus, effectively utilizes common DC bus to carry out the recycling of energy to electrical network; Rectifying part provides stable ac bus voltage, and electrical network only need provide the energy of system loss; And this Energy Saving Control mode is fairly simple, is easier to realize.Five, the devices such as applicable motor, coupling mechanism, cylindrical gear reducer casing, variator, bevel gear, automobile drive axle, worm reducer, planetary reducer, the transmission of chain band, transmission.But six detection technique parameters: but on-line continuous detects the parameters indexs such as zero load, stall, load test, temperature rise:
Current measurement precision: 0.2%FS ± 3d
Voltage measurement precision: 0.2%FS ± 3d
Accuracy of Power Measurement: 0.5%FS ± 3d
Current imbalance calculates: 0.1%FS ± 3d
Temperature measurement accuracy: 0.5% ± 2d
Tachometric survey precision: 0.2%FS ± 3d
Torque measurement precision: 0.2%FS ± 3d
Seven, the protective value of the utility model testing table
Have overcurrent protection, startup surpasses into protection overheating protection; the Te guardtime, rotation-clogging protection, open-phase protection; the current imbalance protection, ground connection/earth leakage protection, the standard configuration functions such as overvoltage/undervoltage protection; has temperature protection; overvoltage protection, underload protection, the protection of underpower factor; frequency protection, function is elected in contactor maximum breaking current protection etc. additional member.
Eight, can realize the property testings such as online unloaded.
Nine, can realize burying a year test.
The utility model critical piece and gordian technique: (motor, torque and speed sensors, controller)
1, critical piece type selecting:
Pull-over gear, generator: ZD2-112-550 type
Torque and speed sensors: JC-02 JW-3
Controller: ssd-590-1200A type possibility of reversal dc controller
2, system performance
(1), Active Front End rectification unit (AFE)
Active Front End is on structure, owing to adopting the IGBT power device, so it is equivalent to an inverter, different is that it is input as interchange, is output as direct current, because it is positioned at power inleting terminal, so be known as front end; Active Front End has the control function of a lot of actives, and it can not only Eliminate highter harmonic, and can improve the system power factor, has remarkable dynamic property; Active Front End has certain boost function in addition, can compensator transformer and the voltage drop of frequency converter inside, guarantee that frequency converter output voltage reaches rated voltage.
(2), inversion unit
Inversion unit mainly plays the effect of control motor, finishes following control function: one, inversion unit should be able to move by the permanent square of dragging motor, and the permanent square precision of system requirements is good, satisfies the requirement of entire system precision.Two, inversion unit has good tracking startup ability, can conveniently start the variable-frequency motor in the rotation.Three, inversion unit can independently provide the electrical network feedback that is not less than certain power ability.Four, converter unit is with the total interface of RX-232, and pilot system Adoption Network control technology is connected with the controller of subsystems by the RX-232 agreement, can the running parameter of converter unit be arranged by interface, and moving row state is monitored.
(3), major control technology:
One, an amount of control technology in space, frequency convertor system adopts the space vector control mode, with the mode of the rotor flux direction as the M axle, control away from exciting current and the torque current to motor respectively according to field orientation, thereby reach the purpose of control motor torque; Utilize the superior dynamic adjustments performance of Direct Current Governor System, satisfy the control requirement of system's rotating speed and torque.Two, principal and subordinate's control technology, the control of pull-over gear implementation speed, generator is carried out torque control, and the torque of generator, speed control signal calculate output by main frame according to the torque export ratio of self, effectively the balance of control load; The given setting load variations of generator dynamic following and changing, in normal range of operation, the speed regulator of generator is output as zero, and it is given that generator is followed the torque of setting constantly.Three, energy close-loop feedback automatic control technology, in present system, two effects of carrying out the frequency converter of feedback energy control be exactly when tested motor is tested the energy of generation feed back to again in the direct current network, play energy-conservation effect.Four, have system's communication interface function, converter unit should be with the RX-232 bus interface, and PLC can arrange the running parameter of converter unit by the RX-232 bus on the one hand, as: startup, shutdown, failure reset, frequency reference setting etc.; Can monitor the converter unit running status on the other hand, as: output frequency, motor speed, current of electric, motor torque, power of motor, electric moter voltage, dc tache voltage, frequency converter temperature, motor temperature, current failure code etc.
Embodiment recited above is described preferred implementation of the present utility model; be not that design of the present utility model and protection domain are limited; under the prerequisite that does not break away from the utility model design concept; common engineering technical personnel make the technical solution of the utility model in this area various modification and improvement all should fall into protection domain of the present utility model.
Claims (1)
1. a generator connecting in parallel with system is transferred testing table, comprising: be used for driving the capable test major loop in zero load, load and hypervelocity duty of all kinds of motors, its characteristics are: also comprise detent (1), detent (1) connects loading motor (2), loading motor (2) connects rotational speed and torque instrument (3), rotational speed and torque instrument (3) connects Devices to test (4) one ends, Devices to test (4) other end connects right side rotational speed and torque instrument (5), and right side rotational speed and torque instrument (5) connects buncher (6); Described generator connecting in parallel with system is transferred testing table and is comprised that also adopting the IGBT power device is the inversion unit of inverter, and it is input as interchange, is output as direct current; Described generator connecting in parallel with system is transferred testing table and is also comprised according to field orientation away from the excitation unit of respectively exciting current and the torque current of motor being controlled; Described generator connecting in parallel with system is transferred testing table and is also comprised the frequency converter that carries out feedback energy control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220383499 CN202710309U (en) | 2012-07-26 | 2012-07-26 | Generator grid-connection transferring test bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220383499 CN202710309U (en) | 2012-07-26 | 2012-07-26 | Generator grid-connection transferring test bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202710309U true CN202710309U (en) | 2013-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220383499 Expired - Fee Related CN202710309U (en) | 2012-07-26 | 2012-07-26 | Generator grid-connection transferring test bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202710309U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798525A (en) * | 2012-07-26 | 2012-11-28 | 枣庄新中兴实业有限责任公司 | Parallel-in transferring test platform of generator |
-
2012
- 2012-07-26 CN CN 201220383499 patent/CN202710309U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798525A (en) * | 2012-07-26 | 2012-11-28 | 枣庄新中兴实业有限责任公司 | Parallel-in transferring test platform of generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130130 Termination date: 20130726 |