CN102305915A - Light load simulation testing apparatus for inverter and method thereof - Google Patents
Light load simulation testing apparatus for inverter and method thereof Download PDFInfo
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- CN102305915A CN102305915A CN201110215872A CN201110215872A CN102305915A CN 102305915 A CN102305915 A CN 102305915A CN 201110215872 A CN201110215872 A CN 201110215872A CN 201110215872 A CN201110215872 A CN 201110215872A CN 102305915 A CN102305915 A CN 102305915A
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Abstract
The invention discloses a light load simulation testing apparatus for an inverter and a method thereof. Resistance-inductance load unit is connected with an output port of a traction inverter; a charging circuit unit is connected with an input port of the traction inverter and is used for carrying out charging on capacitance in the traction inverter; a control power supply unit is connected with a power supply input terminal of the traction inverter; a control system unit is connected with a communication port of the traction inverter; A sensing detection unit is connected with a signal interface of the traction inverter and is used for emitting or receiving various digital or analog signals; and when a test program module is loaded to a transmission control unit of the traction inverter, the transmission control unit of the traction inverter works at a testing mode. According to the apparatus and the method thereof described in the above-mentioned technical scheme provided in the invention, measurement on various parameters of an inverter can be conveniently and rapidly realized, thereby substantially improving working effeicency; meanwhile, security on a testing environment can be improved as well as testing costs and testing space can be substantially reduced.
Description
Technical field
The present invention relates to a kind of inverter proving installation and method thereof; Especially relate to a kind of underloading simulating test device and method thereof that is applied to inverter; Can test each item electric parameter of inverter easily through this devices and methods therefor, also can be applied to the inverter light load simulation test in motor-car, locomotive or the vehicle warehouse-in maintenance process.
Background technology
Inverter is a kind of direct current (DC) to be converted into the supply unit of alternating current (AC), mainly is made up of inverter bridge, steering logic and filtering circuit, comprises several types such as main traction invertor, subordinate inverter.They are the high-power electrical equipments that are used on locomotive, motor-car, high ferro, the railcar.Being that the main traction invertor of power supply is provided is example for the traction electric machine of locomotive or railcar on the locomotive; During its operate as normal; Input rated voltage is DC1500V, and (fluctuation range is between DC1050V～DC1875V) is output as the three-phase alternating current of 0V～1400V, 800A.
After inverter production, need special-purpose proving installation its numerous electric parameter is tested.At present; The manufacturer is after producing inverter; Generally be that the DCU after the test passes (Driver Control Unit, motion control unit) cabinet is assembled in the main traction invertor, according to main traction invertor practical working situation; Make up 1: 1 test environment, promptly DC1500V power supply and the resistance inductive load that bears 1400V, 600A are provided by the outside.Concrete steps are: power supply, load are connected with main traction invertor, then each item electric parameter are tested.
If test by 1: 1 mode, then the special test device need provide the adjustable voltage of DC1050V～DC1875V and greater than the power of 1 megavolt-ampere.Such special test device relates to high voltage, big electric current in measuring process; Therefore test environment hazardous and complicacy for guaranteeing tester's personal safety, require strict to degree of protection; And cost is high,, involve great expense, also have the problem of test safety aspect.
After inverter consigned to user's use with car load, when motor-car, locomotive or the maintenance of vehicle warehouse-in, can the user also needs the special test device to confirm the parameters of inverter, so that whether inverter is qualified after judging maintenance, continue to use.User-user for inverter; When locomotive or the maintenance of vehicle warehouse-in; Though can be more easily the mechanical part of inverter be carried out repair and maintenance; Make up 1: 1 test environment but but be difficult to have ready conditions test for the electric component of inverter separately, therefore in locomotive or vehicle warehouse-in maintenance period, the user is difficult to the detailed electrical performance parameters of grasp inverter.
In the middle of prior art; A kind of in application on 01 16th, 2008; And it is open on 07 09th, 2008; Publication number is that a kind of technical scheme of testing to traction inverter control plate is provided in the Chinese invention patent application " traction inverter control plate dedicated test circuit " of CN101216520A, and this dedicated test circuit to the traction inverter control plate design is made up of signal generating circuit, display circuit and power supply three parts.Signal generating circuit comprises tach signal generative circuit, current signal generative circuit, voltage signal generative circuit and switching value signal generating circuit.Display circuit is exactly a PWM output display circuit.The present invention simulates the operate outside state of traction invertor, and whether in production practices, can test traction inverter control plate easily can operate as normal, in debugging also easily the scrutiny program design whether reach requirement.But according to this technical scheme, also can only test the part electrical specification parameter of control panel, and the complicated operating process of test, in addition, do not relate to traction invertor complete machine electrical parameters measure in this technical scheme.
Therefore necessary design one cover is to the underloading simulating test device of inverter; The manufacturer can test inverter each item electric parameter through this device easily; The user also can utilize this device in addition, the parameters of test inverter when motor-car, locomotive or the maintenance of vehicle warehouse-in.
Summary of the invention
The purpose of this invention is to provide a kind of inverter light load simulating test device and method thereof; This devices and methods therefor can be realized the parameters of inverter is measured quickly and easily; Increase work efficiency greatly; Improve the security of test environment simultaneously, greatly reduced the testing cost and the test space.
The present invention specifically provides a kind of technic relization scheme of inverter light load simulating test device; A kind of inverter light load simulating test device; Comprise: resistance sense load unit, charging circuit unit, regulated power supply unit, control power supply unit, control system unit, sensing detection unit; The test procedure module, the resistance sense load unit links to each other with the delivery outlet of traction invertor; The charging circuit unit links to each other with the input port of traction invertor, and the electric capacity in the traction invertor is charged; The control power supply unit links to each other with the power input of traction invertor; The control system unit links to each other with the COM1 of traction invertor; The sensing detection unit links to each other with the signaling interface of traction invertor, sends or receive various numerals or simulating signal; During the motion control unit of test procedure module loading to traction invertor, make the motion control unit of traction invertor be operated in test pattern.
As the further improvement of a kind of inverter light load simulating test device of the present invention technical scheme, the output voltage range of regulated power supply unit is direct current 77V～137V.The output voltage of control power supply unit is direct current 110V.
As the further improvement of a kind of inverter light load simulating test device of the present invention technical scheme, the COM1 of control system unit and traction invertor carries out information transmission through one or more communication modes in RS232, RS485, CAN, MVB, the Ethernet.
The present invention also provides a kind of in addition and has utilized above-mentioned inverter light load simulating test device to carry out the technical scheme of the method for inverter light load simulation test, and this method may further comprise the steps:
S101: inverter light load simulating test device and traction invertor are electrically connected;
S102: start the inverter light load simulating test device;
S103: the motion control unit that starts traction invertor;
S104: the motion control unit of traction invertor loads the test procedure module;
S105: whether the checkout program module loads success, if success is then carried out next step, if the unsuccessful step S104 that then carries out again;
S106: start the charging circuit unit and begin traction invertor is charged;
S107: whether the inspection charging is accomplished, and then carries out next step if accomplish, and does not then proceed step S106 if accomplish;
S108: inverter light load simulating test device start-up control system unit communicates connection;
S109: whether inspection communication connects, if successful connection is then carried out next step, if step S108 is then carried out in not successful connection again;
S110: the inverter light load simulating test device detects the electric parameter of traction invertor through the sensing detection unit;
S111: judge whether parameter detecting finishes, then carry out next step, then do not proceed step S110 if detect to accomplish if detect to accomplish;
S112: detected parameter value in sensing detection unit and predetermined value are compared;
S113: judge according to comparative result whether each parameter value is in acceptability limit, if detected parameter value in the scope of predetermined value then be judged to qualifiedly, otherwise is defective;
S114: EOT, system cut-off is removed electrical connecting wires.
Through implementing the technical scheme of a kind of inverter light load simulating test device of the invention described above and method thereof, can reach following technique effect:
(1) can realize quickly and easily the parameters of inverter is measured, increase work efficiency greatly;
DC1050V～DC1875V when (2) replacing the traction invertor actual motion through the regulated power supply input that utilizes one road DC77V～DC137V nets pressure; Test parameter is dwindled in proportion; Thereby avoid making up complicated high voltage, big electric current peripheral test environment; Improve the security of test environment, greatly reduced the testing cost and the test space;
(3) not only can supply the manufacturing sector of inverter to use, can supply locomotive depot or rolling stock section to use simultaneously, make things convenient for locomotive depot or rolling stock section to grasp the electric property parameter of inverter dynamically.
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; Obviously, the 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 the system architecture functional block diagram of a kind of embodiment of inverter light load simulating test device of the present invention;
Fig. 2 is the test procedure process flow diagram of inverter light load analog detection method of the present invention;
Wherein: 1-inverter light load simulating test device, 2-resistance sense load unit, 3-charging circuit unit; 4-regulated power supply unit, 5-control power supply unit, 6-control system unit, 7-sensing detection unit, 8-test procedure module, 11-traction invertor; The 12-delivery outlet, 13-input port, 14-motion control unit; The 15-power input, 16-COM1,17-signaling interface.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, 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 are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
With shown in the accompanying drawing 2, provided the specific embodiment that a kind of inverter light load simulating test device of the present invention and method thereof are applied to Locomotive Converter underloading simulation test like accompanying drawing 1, the present invention has been described further below in conjunction with accompanying drawing and specific embodiment.
The embodiment of a kind of inverter light load simulating test device as shown in Figure 1; This device comprises: resistance sense load unit 2; Charging circuit unit 3; Regulated power supply unit 4, control power supply unit 5, control system unit 6, sensing detection unit 7, test procedure module 8, resistance sense load unit 2 links to each other with the delivery outlet 12 of traction invertor 11; Charging circuit unit 3 links to each other with the input port 13 of traction invertor 11, and the electric capacity in the traction invertor 11 is charged; Control power supply unit 5 links to each other with the power input 15 of traction invertor 11; Control system unit 6 links to each other with the COM1 16 of traction invertor 11; Sensing detection unit 7 links to each other with the signaling interface 17 of traction invertor 11, sends or receive various numerals or simulating signal; When test procedure module 8 is loaded on the motion control unit 14 of traction invertor 11, make the motion control unit 14 of traction invertor 11 be operated in test pattern.
Inverter light load simulating test device 1 comprises resistance sense load unit 2, charging circuit unit 3, regulated power supply unit 4, control power supply unit 5, control system unit 6, sensing detection unit 7, test procedure module 8.Wherein, what resistance sense load unit 2 used is the inductance and the low power resistance of little induction reactance value, generally adopts star connection and delta connection.Charging circuit unit 3 can be accomplished the charging of the big electric capacity in the inverter, excessive impact when avoiding causing inverter to power on.Regulated power supply unit 4 output voltages are DC77V～DC137V, the about 1000W of power.Control power supply unit 5 output voltages are DC110V, the about 300W of power.Control system unit 6 is cores of proving installation, can control the work of other each unit.Sensing detection unit 7 can send or receive various numerals or simulating signal.Test procedure module 8 can make the DCU of traction invertor be operated in test pattern.
The specific embodiment of the invention adopts the method for underloading simulation test that powerful traction invertor is tested, and its method of testing is at the power supply supply respect:
1, provide the DC110V power supply to supply power by test board to the DCU cabinet;
DC1050V～DC1875V when 2, providing DC77V～DC137V to simulate main traction invertor operate as normal by test board adds scaled load for then main traction invertor, and the output parameter of test traction invertor in load.
Its method of testing is at the load supply respect:
1, uses the inductance and the low power resistance of little induction reactance;
2, with being connected into the load of star or triangle after resistance and the inductance series connection as traction invertor.
Can know that by above scheme the underloading simulating test device only needs the power supply of one road DC110V power supply and one road DC77V～DC137V to be provided and needn't to be made up the testing power supply of DC1050V～DC1875V by test board; Use the inductance of miniwatt resistance and little induction reactance needn't use powerful resistance sense load as load.Thereby simplified test environment, practiced thrift cost, reduced volume, reduced the danger of test and improved the work efficiency of test.
Embodiment like the described a kind of traction invertor underloading analog detection method of Fig. 2 may further comprise the steps:
S101: inverter light load simulating test device 1 and traction invertor 11 are electrically connected;
S102: start inverter light load simulating test device 1;
S103: the motion control unit 14 that starts traction invertor 11;
S104: the motion control unit 14 of traction invertor 11 loads test procedure module 8;
S105: whether checkout program module 8 loads success, if success is then carried out next step, if the unsuccessful step S104 that then carries out again;
S106: start charging circuit unit 3 and begin traction invertor 11 is charged;
S107: whether the inspection charging is accomplished, and then carries out next step if accomplish, and does not then proceed step S106 if accomplish;
S108: inverter light load simulating test device 1 start-up control system unit 6 communicates connection;
S109: whether inspection communication connects, if successful connection is then carried out next step, if step S108 is then carried out in not successful connection again;
S110: inverter light load simulating test device 1 detects the electric parameter of traction invertor through sensing detection unit 7;
S111: judge whether parameter detecting finishes, then carry out next step, then do not proceed step S110 if detect to accomplish if detect to accomplish;
S112: sensing detection unit 7 detected parameter values and predetermined value are compared;
S113: judge according to comparative result whether each parameter value is in acceptability limit, if detected parameter value in the scope of predetermined value then be judged to qualifiedly, otherwise is defective;
S114: EOT, system cut-off is removed electrical connecting wires.
The invention provides a kind of method that is directed against the underloading simulation test of inverter, utilize the method can realize fast each item electric parameter of traction invertor is measured.DC1050V～DC1875V when utilizing the regulated power supply input of one road DC77V～DC137V to replace the traction invertor actual motion nets pressure; Test parameter is dwindled in proportion; Thereby avoid making up complicated high voltage, big electric current peripheral test environment; Improve the security of test environment, greatly reduced the testing cost and the test space; Use the inductance of miniwatt resistance and little induction reactance needn't use powerful resistance sense load as load; Can realize apace the parameters of inverter is measured to the underloading analog detection method of inverter; Increase work efficiency greatly; Not only can supply the manufacturing sector of inverter to use; Can supply simultaneously locomotive depot or rolling stock section to use, make things convenient for locomotive depot or rolling stock section to grasp the electric property parameter of inverter dynamically.
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 scheme scope situation of the present invention; All the method for above-mentioned announcement capable of using and technology contents are made many possible changes and modification to technical scheme of the present invention, or are revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from technical scheme of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, be equal to replacement, equivalence changes and modify, all still belong in the scope that technical scheme of the present invention protects.
Claims (5)
1. inverter light load simulating test device; It is characterized in that: comprise resistance sense load unit (2); Charging circuit unit (3); Regulated power supply unit (4), control power supply unit (5), control system unit (6), sensing detection unit (7), test procedure module (8), resistance sense load unit (2) links to each other with the delivery outlet (12) of traction invertor (11); Charging circuit unit (3) links to each other with the input port (13) of traction invertor (11), and the electric capacity in the traction invertor (11) is charged; Control power supply unit (5) links to each other with the power input (15) of traction invertor (11); Control system unit (6) links to each other with the COM1 (16) of traction invertor (11); Sensing detection unit (7) links to each other with the signaling interface (17) of traction invertor (11), sends or receive various numerals or simulating signal; When test procedure module (8) is loaded on the motion control unit (14) of traction invertor (11), make the motion control unit (14) of traction invertor (11) be operated in test pattern.
2. a kind of inverter light load simulating test device according to claim 1 is characterized in that: the output voltage range of said regulated power supply unit (4) is direct current 77V～137V.
3. a kind of inverter light load simulating test device according to claim 2 is characterized in that: the output voltage of said control power supply unit (5) is direct current 110V.
4. according to the described a kind of inverter light load simulating test device of arbitrary claim in the claim 1,2,3, it is characterized in that: said control system unit (6) carries out information transmission with the COM1 (16) of traction invertor (11) through one or more communication modes in RS232, RS485, CAN, MVB, the Ethernet.
5. a method of utilizing claim 1 or 2 or 3 described inverter light load simulating test devices to carry out the inverter light load simulation test is characterized in that, may further comprise the steps:
S101: inverter light load simulating test device (1) and traction invertor (11) are electrically connected;
S102: start inverter light load simulating test device (1);
S103: the motion control unit (14) that starts traction invertor (11);
S104: the motion control unit (14) of traction invertor (11) loads test procedure module (8);
S105: whether checkout program module (8) loads success, if success is then carried out next step, if the unsuccessful step S104 that then carries out again;
S106: start charging circuit unit (3) and begin traction invertor (11) is charged;
S107: whether the inspection charging is accomplished, and then carries out next step if accomplish, and does not then proceed step S106 if accomplish;
S108: inverter light load simulating test device (1) start-up control system unit (6) communicates connection;
S109: whether inspection communication connects, if successful connection is then carried out next step, if step S108 is then carried out in not successful connection again;
S110: inverter light load simulating test device (1) detects the electric parameter of traction invertor (11) through sensing detection unit (7);
S111: judge whether parameter detecting finishes, then carry out next step, then do not proceed step S110 if detect to accomplish if detect to accomplish;
S112: detected parameter value in sensing detection unit (7) and predetermined value are compared;
S113: judge according to comparative result whether each parameter value is in acceptability limit, if detected parameter value in the scope of predetermined value then be judged to qualifiedly, otherwise is defective;
S114: EOT, system cut-off is removed electrical connecting wires.
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| CN201110215872A CN102305915A (en) | 2011-07-29 | 2011-07-29 | Light load simulation testing apparatus for inverter and method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998568A (en) * | 2012-12-05 | 2013-03-27 | 海信（山东）空调有限公司 | Performance testing method and testing device of inverter circuit |
| CN104714058A (en) * | 2015-02-10 | 2015-06-17 | 株洲南车时代电气股份有限公司 | Test tool and equipment of locomotive converter |
| CN105527512A (en) * | 2015-11-27 | 2016-04-27 | 北京京仪绿能电力系统工程有限公司 | DSP-based embedded virtual test system |
| CN107219473A (en) * | 2017-05-17 | 2017-09-29 | 南通欧贝黎新能源电力股份有限公司 | A kind of photovoltaic DC-to-AC converter method of testing |
| CN108152639A (en) * | 2018-01-11 | 2018-06-12 | 悦利电气(江苏)有限公司 | A kind of train traction case internal component detection device |
| CN112305332A (en) * | 2019-07-30 | 2021-02-02 | 株洲中车时代电气股份有限公司 | Load device for railway vehicle converter test |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998568A (en) * | 2012-12-05 | 2013-03-27 | 海信（山东）空调有限公司 | Performance testing method and testing device of inverter circuit |
| CN102998568B (en) * | 2012-12-05 | 2015-04-29 | 海信（山东）空调有限公司 | Performance testing method and testing device of inverter circuit |
| CN104714058A (en) * | 2015-02-10 | 2015-06-17 | 株洲南车时代电气股份有限公司 | Test tool and equipment of locomotive converter |
| CN104714058B (en) * | 2015-02-10 | 2018-11-20 | 株洲南车时代电气股份有限公司 | The test tool and testing equipment of locomotive converter |
| CN105527512A (en) * | 2015-11-27 | 2016-04-27 | 北京京仪绿能电力系统工程有限公司 | DSP-based embedded virtual test system |
| CN105527512B (en) * | 2015-11-27 | 2018-12-18 | 北京京仪绿能电力系统工程有限公司 | Embedded virtual test system based on DSP |
| CN107219473A (en) * | 2017-05-17 | 2017-09-29 | 南通欧贝黎新能源电力股份有限公司 | A kind of photovoltaic DC-to-AC converter method of testing |
| CN107219473B (en) * | 2017-05-17 | 2020-05-12 | 南通欧贝黎新能源电力股份有限公司 | Photovoltaic inverter testing method |
| CN108152639A (en) * | 2018-01-11 | 2018-06-12 | 悦利电气(江苏)有限公司 | A kind of train traction case internal component detection device |
| CN108152639B (en) * | 2018-01-11 | 2024-02-06 | 悦利电气(江苏)有限公司 | Device for detecting components in train traction box |
| CN112305332A (en) * | 2019-07-30 | 2021-02-02 | 株洲中车时代电气股份有限公司 | Load device for railway vehicle converter test |
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Application publication date: 20120104 |