CN102798525A - Parallel-in transferring test platform of generator - Google Patents
Parallel-in transferring test platform of generator Download PDFInfo
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- CN102798525A CN102798525A CN2012102743160A CN201210274316A CN102798525A CN 102798525 A CN102798525 A CN 102798525A CN 2012102743160 A CN2012102743160 A CN 2012102743160A CN 201210274316 A CN201210274316 A CN 201210274316A CN 102798525 A CN102798525 A CN 102798525A
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Abstract
A parallel-in transferring test platform of a generator comprises a main test loop and a brake, wherein the brake is connected with a loading motor which is connected with a rotating speed torque instrument, the rotating 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 rotating speed torque instrument which is connected with a speed regulating motor; the parallel-in transferring test platform of the generator also comprises an inversion unit, an excitation unit and a frequency converter, wherein the inversion unit is respectively used for 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 feeding back the energy control. The parallel-in transferring test platform of the generator has the advantages that the automatic test is realized, the test process is safe, high-efficiency and energy-saving, and the running state of a frequency conversion unit can be monitored.
Description
Technical field
The present invention relates to a kind of testing table that detects drive apparatus such as all kinds of motors, fluid coupling, all kinds of shaft couplings, relate in particular to a kind of generator connecting in parallel with system and transfer testing table.
Background technology
At present, detect the testing table of drive apparatus such as all kinds of motors, fluid coupling, all kinds of shaft couplings, main employing manual operations control test, artificial meter reading meter record test figure comprises overcurrent test, temperature rise test, overpotential test etc.; There is obvious defects in this manual test: inefficiency, and labour intensity is bigger, and test accuracy is not high, and the reliability of test figure receives artificial 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 invention is to provide a kind of test automatically and test process safety, efficient, energy-conservation generator connecting in parallel with system are transferred testing table.
For realizing above-mentioned purpose, the technical scheme that the present invention adopted is:
A kind of generator connecting in parallel with system is transferred testing table; Comprising: be used to drive the test major loop of the moving row of all kinds of motors in zero load, load and hypervelocity duty, its characteristics are: also comprise detent, detent connects loading motor; Loading motor connects the rotational speed and torque appearance; The rotational speed and torque appearance connects Devices to test one end, and the Devices to test other end connects right side rotational speed and torque appearance, and right side rotational speed and torque appearance connects buncher; Described generator connecting in parallel with system is transferred testing table and is comprised that also adopting 1GB T 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.
Advantage of the present invention is: one, the inversion unit among the present invention adopts 1GB T power device, and it is input as interchange, is output as direct current, and it can not only eliminate higher hamonic wave, and can improve the system power factor, has remarkable dynamic property; Active in addition front end has certain boost function, can compensator transformer and the inner voltage drop of frequency converter, guarantee that frequency converter output voltage reaches rated voltage.
Two, the present invention use the space vector control technology according to field orientation away from respectively the exciting current and the torque current of motor being controlled; 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 making an experiment motor to be 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 keep watch on 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 or the like.
Description of drawings
Fig. 1 is experiment table transmission synoptic diagram among the present invention;
Fig. 2 is experiment table electrical principle synoptic diagram among the present invention;
Fig. 3 is feedback control principle figure among the present invention.
In the accompanying drawing
1, detent 2, loading motor 3, rotational speed and torque appearance 4, Devices to test 5, rotational speed and torque appearance 6, buncher
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is further described:
A kind of generator connecting in parallel with system is transferred testing table, like Fig. 1,2, shown in 3, comprising: be used to drive the test major loop of the moving row of all kinds of motors in zero load, load and hypervelocity duty; Also comprise detent 1, detent 1 connects loading motor 2, and loading motor 2 connects rotational speed and torque appearance 3, and rotational speed and torque appearance 3 connects Devices to test 4 one ends, and Devices to test 4 other ends connect right side rotational speed and torque appearance 5, and right side rotational speed and torque appearance 5 connects buncher 6; Described generator connecting in parallel with system is transferred testing table and is comprised that also adopting 1GB T 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 invention has the beneficial effects as follows: 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, electrical network is not had impact and pollute, and 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 recycle of energy; Rectifying part provides the stable AC busbar 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, be suitable for devices such as motor, coupling mechanism, cylindrical gear reducer casing, variator, bevel gear, automobile drive axle, worm reducer, planetary reducer, chain belt transmission, transmission.
But six detection technique parameters: but on-line continuous detects 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
Power measurement precision: 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 testing table of the present invention
Have overcurrent protection, startup surpasses into protection, overheating protection, Te guardtime; Rotation-clogging protection, open-phase protection, current imbalance protection, ground connection/earth leakage protection; Standard configuration functions such as overvoltage/undervoltage protection have 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 property testings such as online zero load.
Nine, can realize burying a year test.
Critical piece of the present invention 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: 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 sees that from structure owing to adopt the 1GBT 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 become front end; Active front end has the control function of a lot of actives, and it can not only eliminate higher hamonic wave, and can improve the system power factor, has remarkable dynamic property; Active in addition front end has certain boost function, can compensator transformer and the inner voltage drop of frequency converter, guarantee that frequency converter output voltage reaches rated voltage.
(2), inversion unit
Inversion unit mainly plays the effect of control motor, accomplishes 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 has the total interface of RX-232, and pilot system adopts the network control technology, is connected with the controller of each sub-systems through the RX-232 agreement, can the running parameter of converter unit be provided with through interface, and moving row state is kept watch on.
(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 rotor flux direction as the M axle, according to field orientation away from respectively motor moving exciting current and torque current being controlled, thereby reach the purpose of controlling 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, pull-over gear is carried out speed control, and 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 making an experiment motor to be 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 have the RX-232 EBI, and PLC can be provided with the running parameter of converter unit through the RX-232 bus on the one hand, as: startup, shutdown, fault reset, frequency reference setting etc.; Can keep watch on 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 or the like.
Embodiment recited above describes preferred implementation of the present invention; Be not that design of the present invention and protection domain are limited; Under the prerequisite that does not break away from design concept of the present invention; Common engineering technical personnel make technical scheme of the present invention in this area various modification and improvement all should fall into protection scope of the present invention.
Claims (1)
1. a generator connecting in parallel with system is transferred testing table; Comprising: be used to drive the test major loop of the moving row of all kinds of motors in zero load, load and hypervelocity duty, its characteristics are: also comprise detent (1), detent (1) connects loading motor (2); Loading motor (2) connects rotational speed and torque appearance (3); Rotational speed and torque appearance (3) connects Devices to test (4) one ends, and Devices to test (4) other end connects right side rotational speed and torque appearance (5), and right side rotational speed and torque appearance (5) connects buncher (6); Described generator connecting in parallel with system is transferred testing table and is comprised that also adopting 1GB T 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.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102743160A CN102798525A (en) | 2012-07-26 | 2012-07-26 | Parallel-in transferring test platform of generator |
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| CN2012102743160A CN102798525A (en) | 2012-07-26 | 2012-07-26 | Parallel-in transferring test platform of generator |
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| CN2012102743160A Pending CN102798525A (en) | 2012-07-26 | 2012-07-26 | Parallel-in transferring test platform of generator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106872126A (en) * | 2017-01-19 | 2017-06-20 | 北京航空航天大学 | Large-scale magnetic coupling stiffness characteristics comprehensive test platform |
| CN107727422A (en) * | 2017-09-26 | 2018-02-23 | 中国科学院电工研究所 | A kind of high-power wind mill dynamic simulation experiment system |
| CN109507588A (en) * | 2019-01-08 | 2019-03-22 | 黄东松 | A kind of energy-saving electrical machine band load pilot system |
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| EP1548279A1 (en) * | 2003-12-23 | 2005-06-29 | Voith Turbo GmbH & Co. KG | Control system for wind turbine with hydrodynamic transmission. |
| CN201637829U (en) * | 2010-03-30 | 2010-11-17 | 北京通航华苏美航材科技开发有限公司 | Comprehensive test bed for double current generators |
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2012
- 2012-07-26 CN CN2012102743160A patent/CN102798525A/en active Pending
Patent Citations (6)
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| EP1548279A1 (en) * | 2003-12-23 | 2005-06-29 | Voith Turbo GmbH & Co. KG | Control system for wind turbine with hydrodynamic transmission. |
| CN201637829U (en) * | 2010-03-30 | 2010-11-17 | 北京通航华苏美航材科技开发有限公司 | Comprehensive test bed for double current generators |
| CN202102089U (en) * | 2011-05-17 | 2012-01-04 | 中国电力科学研究院 | Motor efficiency detection system device |
| CN102305914A (en) * | 2011-06-17 | 2012-01-04 | 陕西科技大学 | Wind power generation test device |
| CN102435947A (en) * | 2011-10-12 | 2012-05-02 | 扬州华泰电子有限公司 | Direct current feed type motor testing system |
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| 王志新 罗广文: "《电机控制技术》", 31 October 2010 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106872126A (en) * | 2017-01-19 | 2017-06-20 | 北京航空航天大学 | Large-scale magnetic coupling stiffness characteristics comprehensive test platform |
| CN106872126B (en) * | 2017-01-19 | 2019-09-06 | 北京航空航天大学 | Large-scale magnetic coupling stiffness characteristics comprehensive test platform |
| CN107727422A (en) * | 2017-09-26 | 2018-02-23 | 中国科学院电工研究所 | A kind of high-power wind mill dynamic simulation experiment system |
| CN109507588A (en) * | 2019-01-08 | 2019-03-22 | 黄东松 | A kind of energy-saving electrical machine band load pilot system |
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Application publication date: 20121128 |