CN102004198A - Double-axis feedback low-voltage alternating current variable frequency electric transmission test system and method - Google Patents
Double-axis feedback low-voltage alternating current variable frequency electric transmission test system and method Download PDFInfo
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- CN102004198A CN102004198A CN2010102971793A CN201010297179A CN102004198A CN 102004198 A CN102004198 A CN 102004198A CN 2010102971793 A CN2010102971793 A CN 2010102971793A CN 201010297179 A CN201010297179 A CN 201010297179A CN 102004198 A CN102004198 A CN 102004198A
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Abstract
The invention discloses a double-axis feedback low-voltage alternating current variable frequency electric transmission test system and a double-axis feedback low-voltage alternating current variable frequency electric transmission test method. The double-axis feedback low-voltage alternating current variable frequency electric transmission test system comprises a low-voltage power supply system, a driving system and a load system, wherein the driving system and the load system are symmetrical with each other; each of the driving system and the load system consists of two sets of alternating current variable frequency asynchronous motors and inverters corresponding to the motors; the two sets of motors of the driving system are connected with the two sets of motors of the load system through rigid transmission shafts respectively; a transmission shaft clutch is connected between the two transmission shafts; and a plurality of transmission structures can be simulated through the separation or the meshing of the clutch and a plurality of types of loads can be simulated through the load system, so that one set of alternating current electric transmission test system can perform multi-purpose tests.
Description
Technical field
The present invention relates to the power drive technology, particularly a kind of twin shaft feed-back type low-voltage alternating-current frequency conversion power drive pilot system and test method thereof.
Background technology
The power drive technology is that the driving motor with movable machinery is a controlling object, the torque of controlling and driving motor and the technology of rotating speed.The power drive pilot system generally is made up of power-supply system, drive system and load system three parts.Power drive experimental evidence electricity system is different, can be divided into two kinds of schemes of direct current power transmission test and alternating electromotive force transmission test.
For the direct current power transmission test, Chinese patent CN101162183A discloses a kind of single shaft reversible dc transmission test bench of being made up of as drive motor and load motor direct current generator, and the feedback electric energy of load can be used.But along with developing rapidly of Power Electronic Technique, computer technology, automatic control technology, AC speed regulating replaces DC speed regulation, and oneself becomes development trend.Therefore, this DC Transmission pilot system will lose application prospect gradually.
The AC frequency conversion drive technology be energy-conservation now, improve technological process to improve the quality of products and to improve environment, promote a kind of main means of power drive technical progress.The AC frequency conversion transmission has excellent speed adjusting performance and plays braking ability, and because of its power savings is good, applied widely and advantages such as high-level efficiency, High Power Factor are known as the most rising mode of speed regulation both at home and abroad.Chinese patent CN101221699A discloses a kind of marine vessel power of being made up of control system, propulsion system, load system and ac power supply system that comprises and has advanced the uniaxial test system.Propulsion system is an alternating-current variable frequency motor, and load system is a direct current generator, the simulation propeller load.This test unit can only be used for single electric propulsion experiment, can't be used for the two oar type electric propulsion system tests of two-shipper, has bigger limitation.
Summary of the invention
For overcoming above-mentioned the deficiencies in the prior art, the present invention proposes a kind of twin shaft feed-back type low-voltage alternating-current frequency conversion power drive pilot system and test method thereof.
For this reason, technical scheme of the present invention is as follows:
Twin shaft feed-back type low-voltage alternating-current frequency conversion power drive pilot system is characterized in that comprising low voltage electric power system, drive system and load system, wherein:
Low voltage electric power system comprises the civil power incoming end, independent diesel generator set, the inlet wire transformer, be used for alternating current is converted to galvanic high-power controllable rectifying device and direct current bus-bar, the input end of inlet wire transformer connects civil power incoming end or independent diesel generator set respectively by power switch, the output terminal of inlet wire transformer connects high-power controllable rectifying device, and controllable rectifying device connects the direct current bus-bar;
Drive system and load system are symmetrical structures, each is made up of two AC variable frequency asynchronous motors of cover and corresponding with it inverter, two cover motors of drive system are connected by rigid shaft respectively with two cover motors of load system, connect a clutch drive shaft between two transmission shafts, when clutch coupling is in released state, form unit single shaft drive mechanism or two-shipper twin shaft separate transmission structure, and when clutch coupling is in engagement, form the coaxial drive mechanism of two-shipper.
Be provided with driving governor in the drive system, be used for control and the corresponding inverter of drive motor, be provided with load controller in the load system, be used for control and the corresponding inverter of load motor, drive motor is provided with tachogenerator, and the tach signal of two transmission shafts is fed back to driving governor and load controller respectively.
The inverter of described drive system and load system is connected the direct current bus-bar of low voltage electric power system respectively by isolating switch.
Described load system can be selected loadtype: according to the operation characteristic of actual production machinery, manufacturing machine as motor load can reduce four types: (1) constant torque load, load torque is constant, load torque is not subjected to the influence of rotation speed change, and is irrelevant with the rotating speed of driving motor.(2) constant power load, load torque is inversely proportional to the axle rotating speed, is the torque of a permanent power type.(3) ventilation blower, pump, propeller load, load torque square is directly proportional with the axle rotating speed, and this meets the load properties of ventilation blower, pump class, screw propeller.(4) linear load, load torque is directly proportional with the axle rotating speed, is the torque of a linear-type.Need in the test according to test one of them load of the simulation load type selecting of wanting as transmission test.
Above-mentioned twin shaft feed-back type low-voltage alternating-current frequency conversion power drive pilot system is applied to test, can carries out unit single shaft transmission test, two-shipper twin shaft transmission test, the coaxial transmission test of two-shipper, each test can be carried out respectively as follows:
(1) unit single shaft transmission test
Unit single shaft transmission test is by the single load running of single motor drives.Make described clutch coupling be in released state, formation is formed unit single shaft kinematic train by single drive motor and inverter thereof with load motor and inverter thereof, the torque of control load motor by the inverter of load controller control load motor, make the dissimilar load of load motor simulation, by the inverter of driving governor controlling and driving motor, carry out the variable frequency regulating speed control of drive motor.
(2) two-shipper twin shaft transmission test
Two-shipper twin shaft transmission test is the motion combination of unit single shaft transmission test under the transmission shaft separation case of two cover same types.Make clutch coupling be in released state, under the state of above-mentioned unit single shaft transmission test, move another set of unit single shaft kinematic train, constituted two-shipper twin shaft drive mechanism thus, thereby inverter control load motor by load controller control load motor, make the dissimilar load of load motor simulation,, carry out Synchronous motion control, the coordinated movement of various economic factors control of two drive motor by the inverter of driving governor controlling and driving motor.
(3) the coaxial transmission test of two-shipper
In bi-motor moved in coaxial control occasion, the coaxial transmission test of two-shipper is the motion combination of unit single shaft transmission test under transmission shaft engagement situation of two cover same types.Under the state of above-mentioned two-shipper twin shaft transmission test, make clutch coupling be in engagement, constitute the same shaft transmission system of two-shipper, two fictitious load motors of two common drives of drive motor.Thereby by the inverter control load motor of load controller control load motor, simulate dissimilar loads,, carry out coaxial Synchronous motion control, the coordinated movement of various economic factors control of two drive motor by the inverter of driving governor controlling and driving motor.
Separation or the engagement of twin shaft feed-back type low-voltage alternating-current frequency conversion power drive pilot system of the present invention by clutch drive shaft can obtain the transmission of unit single shaft, the transmission of two-shipper twin shaft, the two-shipper requirement with the different power drive tests of three classes such as through-drive; Control by load, can obtain constant torque load, constant power load, linear load, four kinds of selectable different loads characteristics of propeller load, thereby the applicability and the dirigibility of alternating electromotive force drive experiment system have been improved greatly, expanded the scope of alternating electromotive force transmission test, realized that a cover alternating electromotive force drive experiment system reaches the purpose of multi-usage test.
Under above-mentioned three kinds of tests, the driving torque of drive motor output drives the load motor as fictitious load, and the load motor torque is opposite with the driving torque direction, is in the generator operation state, and electric energy feeds back to drive motor, reduces the power consumption of pilot system.
Description of drawings
Fig. 1 is the principle schematic of twin shaft feed-back type low-voltage alternating-current frequency conversion power drive pilot system of the present invention.
Principle schematic when Fig. 2 carries out unit single shaft transmission test for twin shaft feed-back type low-voltage alternating-current frequency conversion power drive pilot system of the present invention.
Principle schematic when Fig. 3 carries out two-shipper twin shaft transmission test for twin shaft feed-back type low-voltage alternating-current frequency conversion power drive pilot system of the present invention.
Principle schematic when Fig. 4 carries out the coaxial transmission test of two-shipper for twin shaft feed-back type low-voltage alternating-current frequency conversion power drive pilot system of the present invention.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete accompanying drawing, further set forth the present invention.
As shown in Figure 1, but twin shaft feed-back type low-voltage alternating-current frequency conversion power drive pilot system by the drive system 2 of low voltage electric power system 1, the clutch of two-shipper twin shaft of band controlled rectification with can select load system 3 three parts of loadtype to form.
In the power-supply system 1,4 is the civil power incoming end, and 5 is independent diesel generator set, according to the different tests requirement, by power switch 7 and 8, can select different electrical power (civil power or independent generator group).The input end of inlet wire transformer 6 is connected civil power incoming end 4 or independent diesel generator set 5 respectively by power switch 7 and 8, the output terminal of inlet wire transformer 6 connects high-power controllable rectifying device 9, controllable rectifying device 9 connects direct current bus-bar 14, the inverter 10 of drive system and load system, 12,11, a side of 13 is by isolating switch 15,17,16,18 are connected on the direct current bus-bar 14, the electric energy that constitutes the whole test system is presented structure mutually, the feedback electric energy of load system is given drive system 2 by direct current bus-bar 14 cycle power in the test, thereby makes pilot system saves energy greatly.
Driving governor 29 controlling and driving inverters 10 and 12.Load controller 28 control load inverters 11 and 13. Drive motor 19 and 21 both sides are separately installed with tachogenerator 26 and 27, and tachogenerator 26 and 27 feeds back to driving governor 28 and load controller 29 with the tach signal of transmission shaft 23 and 24 respectively.
The test method of unit single shaft transmission as shown in Figure 2, makes clutch coupling 25 be in released state, and load isolating switch 15,16 is connected, and forms unit single shaft drive mechanism by single drive motor 19 and inverter 10 thereof with load motor 20 and inverter 11 thereof.By control inverter 10, carry out the frequency control transmission test of drive motor 19, the driving torque T of its output
EDrive load motor 20.Load motor 20 is in the generator operation state as fictitious load, the electric current I that it sends
11With source current I
9Converge common driving drive motor 19 runnings, its load torque T
LWith driving torque T
EDirection is opposite.According to actual loading torque T
LWith the relation of rotation speed n, by control inverter 11, torque T that can control load motor 20
LCharacter and size, thereby obtain heterogeneity load in the Electrified Transmission test.By the inverter 10 of driving governor controlling and driving motor 19, carry out the variable frequency regulating speed control of drive motor 19.
Two-shipper twin shaft transmission test is the motion combination of unit single shaft transmission test under the transmission shaft separation case of two cover same types.As shown in Figure 3, make clutch coupling 25 be in released state, under the state of above-mentioned unit single shaft transmission test, connect load isolating switch 17,18, form another set of single shaft transmission by drive motor 21 and inverter 12 with load motor 22 and inverter 13, constitute two-shipper twin shaft drive mechanism thus.Thereby inverter 11,13 control load motors 20,22 by load controller control load motor 20,22, simulate dissimilar loads, by the inverter 10,12 of driving governor controlling and driving motor 19,21, carry out Synchronous motion control, the coordinated movement of various economic factors control of two drive motor.
The coaxial transmission test of two-shipper is the motion combination of unit single shaft transmission test under transmission shaft engagement situation of two cover same types.As shown in Figure 4, make clutch coupling 25 be in engagement, under the state of above-mentioned two-shipper twin shaft transmission test, the isolating switch 15,16,17,18 of will loading is connected, constituted the coaxial drive mechanism of two-shipper, drive motor 19 and the 21 common fictitious load motors 20 and 22 that drive.Thereby inverter 11,13 control load motors 20,22 by load controller control load motor 20,22, simulate dissimilar loads, by the inverter 10,12 of driving governor controlling and driving motor 19,21, carry out coaxial Synchronous motion control, the coordinated movement of various economic factors control of two drive motor.
More than show and described ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that describes in the foregoing description and the instructions just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (6)
1. twin shaft feed-back type low-voltage alternating-current frequency conversion power drive pilot system, comprise low voltage electric power system, drive system and load system, it is characterized in that, described drive system and load system are symmetrical structures, each is made up of two AC variable frequency asynchronous motors of cover and corresponding with it inverter, two cover motors of drive system are connected by rigid shaft respectively with two cover motors of load system, connect a clutch drive shaft between two transmission shafts, when clutch coupling is in released state, form unit single shaft drive mechanism or two-shipper twin shaft drive mechanism, and when clutch coupling is in engagement, form the coaxial drive mechanism of two-shipper.
2. twin shaft feed-back type low-voltage alternating-current frequency conversion power drive pilot system according to claim 1, it is characterized in that, described low voltage electric power system comprises the civil power incoming end, independent diesel generator set, the inlet wire transformer, be used for alternating current is converted to galvanic high-power controllable rectifying device and direct current bus-bar, the input end of inlet wire transformer connects civil power incoming end or independent diesel generator set respectively by power switch, the output terminal of inlet wire transformer connects high-power controllable rectifying device, and controllable rectifying device connects the direct current bus-bar.
3. twin shaft feed-back type low-voltage alternating-current frequency conversion power drive pilot system according to claim 1, it is characterized in that, described drive system is provided with driving governor, be used for control and the corresponding inverter of drive motor, load system is provided with load controller, be used for control and the corresponding inverter of load motor, drive motor is provided with tachogenerator, and the tach signal of two transmission shafts is fed back to driving governor and load controller respectively.
4. twin shaft feed-back type low-voltage alternating-current frequency conversion power drive pilot system according to claim 1 is characterized in that, described load system can be selected loadtype by the control inverter.
5. twin shaft feed-back type low-voltage alternating-current frequency conversion power drive test method, it is characterized in that, according to the test needs, separation or engagement by clutch coupling, form unit single shaft drive mechanism, two-shipper twin shaft drive mechanism or the coaxial drive mechanism of two-shipper, thereby carry out unit single shaft transmission test, two-shipper twin shaft transmission test or the coaxial transmission test of two-shipper.
6. twin shaft feed-back type low-voltage alternating-current frequency conversion power drive test method according to claim 5, it is characterized in that, thereby inverter control load motor by load controller control load motor, make the dissimilar load of load motor simulation, inverter by driving governor controlling and driving motor carries out the test that will carry out with the controlling and driving motor.
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| CN2010102971793A CN102004198A (en) | 2010-09-29 | 2010-09-29 | Double-axis feedback low-voltage alternating current variable frequency electric transmission test system and method |
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| CN2010102971793A CN102004198A (en) | 2010-09-29 | 2010-09-29 | Double-axis feedback low-voltage alternating current variable frequency electric transmission test system and method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102353901A (en) * | 2011-06-30 | 2012-02-15 | 无锡星诺电气有限公司 | Generator test system |
| CN103063944A (en) * | 2012-12-04 | 2013-04-24 | 中国北方车辆研究所 | Vehicle electric transmission device test platform |
| CN103257316A (en) * | 2013-05-17 | 2013-08-21 | 内蒙古久和能源科技有限公司 | Multifunctional test system of wind turbine generator system |
| CN104635084A (en) * | 2015-02-03 | 2015-05-20 | 国家电网公司 | Distribution automation equipment transmission test method based on simulator station |
| CN104777425A (en) * | 2015-03-31 | 2015-07-15 | 浙江大学 | Coaxial high-speed mutual feedback test platform for permanent magnet synchronous motor |
| CN106597283A (en) * | 2016-12-30 | 2017-04-26 | 中煤科工集团重庆研究院有限公司 | High-power variable frequency electric transmission equipment test system |
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| CN201909712U (en) * | 2010-09-29 | 2011-07-27 | 上海海事大学 | Double-shaft alternating current frequency conversion power transmission testing system |
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| CN200986584Y (en) * | 2006-12-19 | 2007-12-05 | 谢步明 | Power configuration for dual-electric motor coaxial dragging test system |
| CN201909712U (en) * | 2010-09-29 | 2011-07-27 | 上海海事大学 | Double-shaft alternating current frequency conversion power transmission testing system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353901A (en) * | 2011-06-30 | 2012-02-15 | 无锡星诺电气有限公司 | Generator test system |
| CN103063944A (en) * | 2012-12-04 | 2013-04-24 | 中国北方车辆研究所 | Vehicle electric transmission device test platform |
| CN103257316A (en) * | 2013-05-17 | 2013-08-21 | 内蒙古久和能源科技有限公司 | Multifunctional test system of wind turbine generator system |
| CN104635084A (en) * | 2015-02-03 | 2015-05-20 | 国家电网公司 | Distribution automation equipment transmission test method based on simulator station |
| CN104777425A (en) * | 2015-03-31 | 2015-07-15 | 浙江大学 | Coaxial high-speed mutual feedback test platform for permanent magnet synchronous motor |
| CN104777425B (en) * | 2015-03-31 | 2017-08-04 | 浙江大学 | Coaxial high-speed permanent magnetic synchronous motor mutually presents test platform |
| CN106597283A (en) * | 2016-12-30 | 2017-04-26 | 中煤科工集团重庆研究院有限公司 | High-power variable frequency electric transmission equipment test system |
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Application publication date: 20110406 |