CN102243145A - Testing apparatus and method for electric drive system of electric automobile - Google Patents
Testing apparatus and method for electric drive system of electric automobile Download PDFInfo
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Abstract
The invention discloses a testing apparatus and method for an electric drive system of an electric automobile. The testing apparatus comprises a rectifier power supply, a torque and rotation speed sensor, a measuring and control unit, a tested electric drive system and an accompanying electric drive system, and a simulated condition module; the tested electric drive system and the accompanying electric drive system comprise a motor controller and an automotive motor, an AC (alternating current) power supply end of the tested (accompanying) motor controller is connected with a three-phase AC power supply end of the tested (accompanying) automotive motor; an output shaft of the tested (accompanying)automotive motor is connected with the torque and rotation speed sensor, and the torque and rotation speed sensor is connected with the measuring and control unit; a DC (direct current) power supply end of the tested (accompanying) motor controller is connected with a DC power supply output end of the rectifier power supply in parallel through a DC bus; the rectifier power supply, the tested (accompanying) motor controller and the tested (accompanying) automotive motor are respectively connected with the measuring and control unit; DC voltage and current sensors and AC voltage and current sensors are connected with the measuring and control unit; and the simulated condition module is connected with the measuring and control unit. The testing apparatus provided by the invention has complete conditions, low facility cost and high efficiency.
Description
Technical field
The present invention relates to a kind of experimental apparatus for testing and method thereof of electrical system, especially a kind of experimental apparatus for testing and method thereof that is applied to electric drive system for electric vehicles.
Background technology
Be to solve global energy and environmental crisis, all energy-conservation and vehicles environmental protection are electric automobile in exploitation in countries in the world.At present electric vehicle development merchant's electric drive system for electric vehicles need be tested on the stand of special use, and still is in research and development and improves the stage at the electric drive system for electric vehicles test method, does not have corresponding matured product.
As shown in Figure 1, a kind of prior art electric drive system for electric vehicles test unit is made up of rectifier power source 1, electric machine controller 21, vehicle-mounted motor 22, torque rotary speed sensor 4, electric eddy current dynamometer 7, water cooling system 11, measurement and control unit 5 etc.; The three-phase alternating current electrical input of rectifier power source 1 links to each other with the factory three-phase alternating-current supply, the dc output end of rectifier power source 1 links to each other by the dc voltage input end of dc bus with electric machine controller 21, the three-phase output voltage end of electric machine controller 21 links to each other with the three-phase input voltage end of vehicle-mounted motor 22, the output shaft of vehicle-mounted motor 22 links to each other with the main shaft of torque rotary speed sensor 4, the other end main shaft of torque rotary speed sensor 4 links to each other with electric eddy current dynamometer 7, and the cooling system of electric eddy current dynamometer 7 links to each other with water cooling system 11.
The output of rectifier power source is powered to vehicle-mounted motor after the electric machine controller inversion in above-mentioned prior art electric drive system for electric vehicles test method, vehicle-mounted motor drives the dynamometer machine running by main shaft and torque sensor, energy with the form consumption of heat in water-cooling system.Therefore, prior art electric drive system for electric vehicles test method is simple, but has following defective:
1, prior art electric drive system for electric vehicles test method since energy with the form consumption of heat in water-cooling system, so the energy consumption height.
2, prior art electric drive system for electric vehicles test method test efficiency is low, can only test a cover power drive system simultaneously.
3, operating condition of test is incomplete, can only try electronic operating mode, can not manufacture experimently the condition of starting building.
4, equipment investment cost height need dispose rectifier power source and electric eddy current dynamometer with the power drive system power match.
Summary of the invention
The purpose of this invention is to provide a kind of electric drive system for electric vehicles test unit and method thereof, it is complete that the described electric automobile electricity of this devices and methods therefor drives the pilot system operating mode, reduced the cost of investment of equipment, improved the efficient of test simultaneously.
The present invention specifically provides a kind of embodiment of electric drive system for electric vehicles test unit, a kind of electric drive system for electric vehicles test unit, comprise: rectifier power source, torque rotary speed sensor, measurement and control unit, the three-phase alternating current electrical input of rectifier power source links to each other with three-phase alternating-current supply, the electric drive trains Automatic System Test Unit also comprises: tested power drive system, accompany the examination power drive system, the simulated condition module, tested power drive system further comprises tested electric machine controller and tested vehicle-mounted motor, accompany the examination power drive system further to comprise and accompany the examination electric machine controller and accompany test run live machine, the AC power end of tested electric machine controller links to each other with the three-phase alternating-current supply end of tested vehicle-mounted motor, accompanies the AC power end of examination electric machine controller to link to each other with the three-phase alternating-current supply end of accompanying test run live machine; The output shaft of tested vehicle-mounted motor is connected with torque rotary speed sensor with the output shaft of accompanying test run live machine, and torque rotary speed sensor links to each other with measurement and control unit; The dc power supply terminal of tested electric machine controller is connected in parallel on the dc power output end of rectifier power source with the dc power supply terminal of accompanying the examination electric machine controller by dc bus; Rectifier power source, tested electric machine controller, tested vehicle-mounted motor is accompanied the examination electric machine controller, accompanies test run live machine to link to each other with measurement and control unit respectively; DC voltage, current sensor and alternating voltage, current sensor link to each other with measurement and control unit; The simulated condition module links to each other with measurement and control unit.
As the further embodiment of a kind of electric drive system for electric vehicles test unit of the present invention, the output shaft of tested vehicle-mounted motor is connected with torque rotary speed sensor by the elasticity coupling shaft with the output shaft of accompanying test run live machine.
As the further embodiment of a kind of electric drive system for electric vehicles test unit of the present invention, measurement and control unit comprises industrial computer, Programmable Logic Controller, data collecting card and CAN address card, industrial computer is the calculating and the control core of whole measurement and control unit, and data are handled and analyzed; Programmable Logic Controller links to each other with industrial computer, the data acquisition of control data capture card and CAN address card; Data collecting card is to tested electric machine controller and accompany voltage, the current parameters of examination electric machine controller front-end and back-end to gather; The CAN address card is to tested electric machine controller and accompany the data of examination electric machine controller to gather; Measurement and control unit records tested vehicle-mounted motor by torque rotary speed sensor and accompanies the output speed and the moment of torsion of test run live machine.
As the further embodiment of a kind of electric drive system for electric vehicles test unit of the present invention, rectifier power source comprises rectifier transformer and full-control type rectifier bridge.
As the further embodiment of a kind of electric drive system for electric vehicles test unit of the present invention, when tested vehicle-mounted motor was made electric operation, energy flowed to and to be: rectifier power source → dc bus → tested electric machine controller → tested vehicle-mounted motor → torque rotary speed sensor → accompany test run live machine → accompany examination electric machine controller → dc bus; When tested vehicle-mounted motor was made generator operation, energy flowed to and to be: rectifier power source → dc bus → accompany examination electric machine controller → accompany test run live machine → torque rotary speed sensor → tested vehicle-mounted motor → tested electric machine controller → dc bus.
The present invention also provides a kind of embodiment of electric drive system for electric vehicles test method, a kind of method that above-mentioned electric drive system for electric vehicles is tested, and this test method may further comprise the steps:
S101: the technical parameter to simulated condition module and different power drive systems is provided with;
S102: calculate and mate by measurement and control unit, obtain rotating speed, torque, throttle, the braking under the different power drive systems, the different command of traction, allow each parts of electric drive system for electric vehicles test-bed carry out corresponding actions, thereby finish the power drive system characteristic analogue testing under predetermined different road conditions, the different vehicle model;
S103: measurement and control unit is to the data capture card, and the data that CAN address card and torque rotary speed sensor collect write down and store;
S104: after the off-test,, obtain the performance parameter analysis result of power drive system according to the data that record are analyzed.
As the further embodiment of a kind of electric drive system for electric vehicles test method of the present invention, establishment has curve of traction characteristics in the simulated condition module, curve of traction characteristics is used to simulate the running under power operating mode of the power drive system under the different road conditions, and curve of traction characteristics is according to different road conditions, the actual operating state collection of different vehicle model or calculate.
As the further embodiment of a kind of electric drive system for electric vehicles test method of the present invention, establishment has the braking characteristic curve in the simulated condition module, the braking characteristic curve is used to simulate the running under braking operating mode of the power drive system under the different road conditions, and the braking characteristic curve is according to different road conditions, the actual operating state collection of different vehicle model or calculate.
As the further embodiment of a kind of electric drive system for electric vehicles test method of the present invention, establishment has external characteristic curve, external characteristic curve to be used for the velocity characteristic of analog electrical drive system under the peak power operating mode in the simulated condition module.
As the further embodiment of a kind of electric drive system for electric vehicles test method of the present invention, the continuous working family curve that in the simulated condition module there is establishment, the continuous working family curve is used to simulate the continuous operating condition of power drive system under the different road conditions.
By implementing a kind of electric drive system for electric vehicles test unit of the present invention and the described technical scheme of method embodiment thereof, test function is complete, the test efficiency height, flexible to operation, test method is low energy more, and environmental protection can realize that direct current is incorporated into the power networks, can not pollute electrical network, equipment investment cost is low simultaneously.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is that the system architecture of a kind of electric drive system for electric vehicles test unit of prior art is formed synoptic diagram;
Fig. 2 is that the system architecture of a kind of embodiment of electric drive system for electric vehicles test unit of the present invention is formed synoptic diagram;
Among the figure, 1-rectifier power source, the tested power drive system of 2-, 3-accompanies the examination power drive system, the tested electric machine controller of 21-, the tested vehicle-mounted motor of 22-, 31-accompanies the examination electric machine controller, and 32-accompanies test run live machine, 4-torque rotary speed sensor, the 5-measurement and control unit, 6-simulated condition module, 7-electric eddy current dynamometer, 8-DC voltage, current sensor, 9-alternating voltage, current sensor, 10-elasticity coupling shaft, 11-water cooling system.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described.Obviously, described embodiment only is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
As the embodiment of a kind of electric drive system for electric vehicles test unit of the present invention, electric drive system for electric vehicles test unit as shown in Figure 2 comprises: rectifier power source 1, two cover power drive systems (tested power drive system 2 and accompany examination power drive system 3), torque rotary speed sensor 4, measurement and control unit 5, simulated condition module 6.
The power drive system that two covers are accompanied test product is each other formed by the live machine combination of harnessing an animal to a cart of two cover electric machine controllers and two; During test wherein a cover for tested electric machine controller and tested vehicle-mounted motor, another set of for accompanying the examination electric machine controller and accompanying test run live machine; As a kind of typical embodiment, tested power drive system 2 comprises tested electric machine controller 21 and tested vehicle-mounted motor 22, accompanies examination power drive system 3 to comprise and accompanies examination electric machine controller 31 and accompany test run live machine 32.
Wherein, the AC power end of tested electric machine controller 21 links to each other with the three-phase alternating-current supply end of tested vehicle-mounted motor 22, and the described AC power end of examination electric machine controller 31 of accompanying links to each other with the three-phase alternating-current supply end of accompanying test run live machine 32; The output shaft of tested vehicle-mounted motor 22 is connected with torque rotary speed sensor 4 with the output shaft of accompanying test run live machine 32, and torque rotary speed sensor 4 links to each other with measurement and control unit 5; The dc power supply terminal of tested electric machine controller 21 is connected in parallel on the dc power output end of rectifier power source 1 with the dc power supply terminal of accompanying examination electric machine controller 31 by dc bus; Rectifier power source 1, tested electric machine controller 21, tested vehicle-mounted motor 22 is accompanied examination electric machine controller 31, accompanies test run live machine 32 to link to each other with measurement and control unit 5 respectively; DC voltage, current sensor 8 and alternating voltage, current sensor 9 link to each other with measurement and control unit 5; Simulated condition module 6 links to each other with measurement and control unit 5.The output shaft of tested vehicle-mounted motor 22 is connected with torque rotary speed sensor 4 by elasticity coupling shaft 10 with the output shaft of accompanying test run live machine 32.Rectifier power source 1 further comprises rectifier transformer and full-control type rectifier bridge, and the energy loss in the pilot system is provided.
Measurement and control unit 5 in the electric drive system for electric vehicles test unit comprises industrial computer, Programmable Logic Controller, data collecting card, CAN address card, and major function is that the electric weight and the non electrical quantity data of vehicle-mounted motor and electric machine controller, rectifier power source are gathered and analyzed.Industrial computer is the calculating and the control core of whole measurement and control unit 5, and data are handled and analyzed; Programmable Logic Controller links to each other with industrial computer, the data acquisition of control data capture card and CAN address card; Data collecting card is to tested electric machine controller 21 and accompany voltage, the current parameters of examination electric machine controller 31 front-end and back-end to gather; The CAN address card is to tested electric machine controller 21 and accompany the data of examination electric machine controller 31 to gather; Measurement and control unit 5 records tested vehicle-mounted motor 22 by torque rotary speed sensor 4 and accompanies the output speed and the moment of torsion of test run live machine 32.
Wherein, rectifier power source 1 provides the energy loss in the pilot system.When tested vehicle-mounted motor 22 was made electric operation, energy flowed to and to be: rectifier power source 1 → dc bus → tested electric machine controller 21 → tested vehicle-mounted motor 22 → torque rotary speed sensor 4 → accompany test run live machine 32 → accompany examination electric machine controller 31 → dc bus; When tested vehicle-mounted motor 22 was made generator operation, energy flowed to and to be: rectifier power source 1 → dc bus → accompany examination electric machine controller 31 → accompany test run live machine 32 → torque rotary speed sensor 4 → tested vehicle-mounted motor 22 → tested electric machine controller 21 → dc bus.Because tested vehicle-mounted motor and accompany the shared dc bus of test run live machine, energy be no longer by the AC network closed loop, but on dc bus, realized closed loop, thereby realized that direct current is incorporated into the power networks.
A kind of method that above-mentioned electric drive system for electric vehicles is tested may further comprise the steps:
S101: the technical parameter to simulated condition module 6 and different power drive systems is provided with;
S102: calculate and mate by measurement and control unit 5, obtain rotating speed, torque, throttle, the braking under the different power drive systems, the different command of traction, allow each parts of electric drive system for electric vehicles test-bed carry out corresponding actions, thereby finish the power drive system characteristic analogue testing under predetermined different road conditions, the different vehicle model;
S103: 5 pairs of data capture cards of measurement and control unit, the data that CAN address card and torque rotary speed sensor 4 collect write down and store;
S104: after the off-test,, obtain the performance parameter analysis result of power drive system according to the data that record are analyzed.
Thereby obtain the correlated performance analysis report of power drive system, mainly finish the characteristic analogue testing of electric drive system for electric vehicles on test-bed.
In above-mentioned electric drive system for electric vehicles test method, two covers accompany the power drive system of test product by the dc bus parallel connection each other, realize that direct current is incorporated into the power networks energy circulation.Wherein, Work condition analogue module 6 is according to the test needs, and establishment has curve of traction characteristics, simulates the power drive system running under power operating mode under the different road conditions.This curve of traction characteristics can be more according to different road conditions, the actual operating state collection of different vehicle model or calculate.
Work condition analogue module 6 is according to the test needs, and also establishment has the braking characteristic curve, simulates the power drive system running under braking operating mode under the different road conditions.This braking characteristic curve can be more according to different road conditions, the actual operating state collection of different vehicle model or calculate.
Also according to the test needs, establishment has external characteristic curve, the velocity characteristic under the analog electrical drive system peak power operating mode to simulated condition module 6.
Also according to the test needs, establishment has the continuous working family curve to simulated condition module 6, simulates the continuous operating condition of power drive system under the different road conditions.
In above-mentioned electric drive system for electric vehicles test unit, measurement and control unit 5 also by gathering the electric quantity signal and the non-electric charge quantity signalling of each link, calculates the efficiency ratio of each link of power drive system.
Wherein: " simulated condition " in the described electric drive system for electric vehicles test method is according to the test needs, family curves such as the traction of establishment, braking, work, send motor operating parameter (rotating speed of target or target torque) by the CAN address card to electric machine controller by measurement and control unit, simulate the power drive system operating condition under the different road conditions.This curve of traction characteristics can be more according to different road conditions, the actual operating state collection of different vehicle model or calculate.
Torque rotary speed sensor in the electric drive system for electric vehicles test method is mainly measured non-electrical parameters such as the torque, rotating speed of power drive system output.
The described technical scheme test function of this test unit and method thereof is complete, can finish efficiency test (traction, braking), pulling figure test, braking characteristic test, harmonic wave test and analysis, the external characteristics test of temperature rise test under basic function test, the charged aging test of system's normal temperature, the peak value operating characteristic, continuous working attribute testing, the test of efficient district, various operating modes, high workload speed test, braking copped wave test, power supply prominent throwing, prominently cut test; The test efficiency height can be finished two cover power drive system tests simultaneously; Test operation is convenient, flexible, only needs to set simulated condition, and system's stand can be finished the related needs of each operating condition of test of power drive system; Test method low energy, two covers accompany the power drive system of test product by the dc bus parallel connection each other, realize that direct current is incorporated into the power networks energy circulation; Rectifier power source provides the energy loss in the pilot system; Be equivalent to only to provide test power 20% about energy, saved the energy greatly; The test method environmental protection realizes that direct current is incorporated into the power networks, and can not pollute electrical network; The test method equipment investment cost is low, only need purchase rectifier power source, torque rotary speed sensor, measurement and control unit.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction.Though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention.Any those of ordinary skill in the art, do not breaking away under the technical solution of the present invention scope situation, all can utilize the method and the technology contents of above-mentioned announcement that technical solution of the present invention is made many possible changes and modification, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, be equal to replacements, equivalence changes and modify, all still belong in the scope that technical solution of the present invention protects.
Claims (10)
1. electric drive system for electric vehicles test unit, comprise rectifier power source (1), torque rotary speed sensor (4), measurement and control unit (5), the three-phase alternating current electrical input of rectifier power source (1) links to each other with three-phase alternating-current supply, it is characterized in that, the electric drive trains Automatic System Test Unit also comprises: tested power drive system (2), accompany examination power drive system (3), simulated condition module (6), described tested power drive system (2) comprises tested electric machine controller (21) and tested vehicle-mounted motor (22), describedly accompany examination power drive system (3) to comprise to accompany examination electric machine controller (31) and accompany test run live machine (32), the AC power end of described tested electric machine controller (21) links to each other with the three-phase alternating-current supply end of tested vehicle-mounted motor (22), and the described AC power end of examination electric machine controller (31) of accompanying links to each other with the three-phase alternating-current supply end of accompanying test run live machine (32); The output shaft of tested vehicle-mounted motor (22) is connected with torque rotary speed sensor (4) with the output shaft of accompanying test run live machine (32), and torque rotary speed sensor (4) links to each other with measurement and control unit (5); The dc power supply terminal of tested electric machine controller (21) is connected in parallel on the dc power output end of rectifier power source (1) with the dc power supply terminal of accompanying examination electric machine controller (31) by dc bus; Rectifier power source (1), tested electric machine controller (21), tested vehicle-mounted motor (22) is accompanied examination electric machine controller (31), accompanies test run live machine (32) to link to each other with measurement and control unit (5) respectively; DC voltage, current sensor (8) and alternating voltage, current sensor link to each other with measurement and control unit (5); Simulated condition module (6) links to each other with measurement and control unit (5).
2. a kind of electric drive system for electric vehicles test unit according to claim 1 is characterized in that: the output shaft of described tested vehicle-mounted motor (22) is connected with torque rotary speed sensor (4) by elasticity coupling shaft (10) with the output shaft of accompanying test run live machine (32).
3. a kind of electric drive system for electric vehicles test unit according to claim 1 and 2, it is characterized in that: described measurement and control unit (5) comprises industrial computer, Programmable Logic Controller, data collecting card and CAN address card, industrial computer is the calculating and the control core of whole measurement and control unit (5), and data are handled and analyzed; Programmable Logic Controller links to each other with industrial computer, the data acquisition of control data capture card and CAN address card; Data collecting card is to tested electric machine controller (21) and accompany voltage, the current parameters of examination electric machine controller (31) front-end and back-end to gather; The CAN address card is to tested electric machine controller (21) and accompany the data of examination electric machine controller (31) to gather; Measurement and control unit (5) records tested vehicle-mounted motor (22) by torque rotary speed sensor (4) and accompanies the output speed and the moment of torsion of test run live machine (32).
4. a kind of electric drive system for electric vehicles test unit according to claim 3 is characterized in that: described rectifier power source (1) comprises rectifier transformer and full-control type rectifier bridge.
5. according to the described a kind of electric drive system for electric vehicles test unit of arbitrary claim in the claim 1,2,4, it is characterized in that: when described tested vehicle-mounted motor (22) when making electric operation, energy flows to and is: rectifier power source (1) → dc bus → tested electric machine controller (21) → tested vehicle-mounted motor (22) → torque rotary speed sensor (4) → accompany test run live machine (32) → accompany examination electric machine controller (31) → dc bus; When tested vehicle-mounted motor (22) when making generator operation, energy flows to and is: rectifier power source (1) → dc bus → accompany examination electric machine controller (31) → accompany test run live machine (32) → torque rotary speed sensor (4) → tested vehicle-mounted motor (22) → tested electric machine controller (21) → dc bus.
6. method that the described electric drive system for electric vehicles of claim 1 is tested is characterized in that described test method may further comprise the steps:
S101: the technical parameter to simulated condition module (6) and different power drive systems is provided with;
S102: calculate and mate by measurement and control unit (5), obtain rotating speed, torque, throttle, the braking under the different power drive systems, the different command of traction, allow each parts of electric drive system for electric vehicles test-bed carry out corresponding actions, thereby finish the power drive system characteristic analogue testing under predetermined different road conditions, the different vehicle model;
S103: measurement and control unit (5) is to the data capture card, and the data that CAN address card and torque rotary speed sensor (4) collect write down and store;
S104: after the off-test,, obtain the performance parameter analysis result of power drive system according to the data that record are analyzed.
7. a kind of electric drive system for electric vehicles test method according to claim 6, it is characterized in that: establishment has curve of traction characteristics in the described simulated condition module (6), curve of traction characteristics is used to simulate the running under power operating mode of the power drive system under the different road conditions, and curve of traction characteristics is according to different road conditions, the actual operating state collection of different vehicle model or calculate.
8. a kind of electric drive system for electric vehicles test method according to claim 7, it is characterized in that: establishment has the braking characteristic curve in the described simulated condition module (6), the braking characteristic curve is used to simulate the running under braking operating mode of the power drive system under the different road conditions, and the braking characteristic curve is according to different road conditions, the actual operating state collection of different vehicle model or calculate.
9. a kind of electric drive system for electric vehicles test method according to claim 8, it is characterized in that: establishment has external characteristic curve, external characteristic curve to be used for the velocity characteristic of analog electrical drive system under the peak power operating mode in the described simulated condition module (6).
10. a kind of electric drive system for electric vehicles test method according to claim 9, it is characterized in that: the continuous working family curve that in the described simulated condition module (6) there is establishment, the continuous working family curve is used to simulate the continuous operating condition of power drive system under the different road conditions.
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