CN104883221A - A test system and a test method for a plurality of power units - Google Patents
A test system and a test method for a plurality of power units Download PDFInfo
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Abstract
The invention discloses a test system and a test method for a plurality of power units; the test system comprises a test power supply adjusting module, a fiber ring network test module and a test load module connected in sequence, wherein the test load module is used for providing a test load; the fiber ring network test module comprises a main controller and a plurality of tested power units; the tested power units are cascaded in sequence through fibers so as to form a test path; the main controller is respectively connected with two ends of the test path through fibers so as to form a fiber test ring network; the main controller sends a control order, the control order is transferred to the corresponding tested power unit through the fiber test ring network, and state information sent by each tested power unit is returned to the main controller through the fiber test ring network; the test method is the test method of the test system. The test system and test method can test the plurality of power units, are simple in operation, low in cost, and high in test efficiency and resource utilization rate.
Description
Technical field
The present invention relates to power cell technical field of measurement and test, particularly relate to a kind of test macro for multiple power cell and method of testing thereof.
Background technology
Power electronic device medium-high voltage frequency converter product is all be made up of multiple cascade of power units usually, but the test macro major part at present for power cell is all separate unit power cell test macro, namely can only complete a power cell test at every turn, its testing efficiency is low and the resource utilizations such as testing equipment are low, particularly in the application of producing in enormous quantities, cannot meet that speed is fast, the test request of low cost.
Practitioner is had to propose the solution of being tested by the multiple power cell of unified control realization, as Chinese patent application CN104422838 A discloses a kind of electric and electronic power module test operational system, a control unit is connected by one or more power cell, control unit controls the operating state of module to be measured by optical fiber, master controller utilizes netting twine to be communicated with control unit by switch, thus can meet the testing results of multiple power cell.But such scheme needs each power cell to be tested all to carry out Fiber connection with control unit to communicate to realize control data; test structure complexity adds testing cost simultaneously; and when power cell quantity to be tested is more; usually also need to complete the testing and control of each power cell in conjunction with master controller and multiple control unit as transferring equipment, further increase testing complex degree and testing cost.
Summary of the invention
The technical problem to be solved in the present invention is just: the technical problem existed for prior art, the invention provides a kind of test operation simple, the test of multiple power cell can be realized, low, the testing efficiency of required cost and the high test macro for multiple power cell of test resource utilance and method of testing thereof simultaneously.
For solving the problems of the technologies described above, the technical scheme that the present invention proposes is:
A kind of test macro for multiple power cell, comprise the testing power supply adjustment module, the optical fiber ring network test module and for providing the test load module of test load that connect successively, described optical fiber ring network test module comprises main controller and multiple measured power unit, measured power unit described in each forms test access by optical fiber successively cascade, and described master controller connects and composes test optical fiber looped network with the two ends of described test access respectively by optical fiber; The control command that described master controller sends transfers to corresponding measured power unit through described test optical fiber looped network, and the state information that each described measured power unit sends is back to described master controller through described test optical fiber looped network.
Further improvement as present system: described test load module comprises multiple inductive load unit, each described inductive load unit is connected with a described measured power unit.
Further improvement as present system: each described inductive load unit is connected by the wiring cabinet containing selector switch with a described measured power unit, is controlled the output of described inductive load unit by the selector switch of described wiring cabinet.
Further improvement as present system: described testing power supply adjustment module is voltage regulator.
Further improvement as present system: also comprise the monitoring module be connected with described optical fiber ring network test module, described monitoring module sends the control command of the parameters of corresponding each measured power unit to described master controller, and is received the state information of each measured power unit by described master controller.
The present invention also provides a kind of method of testing based on the above-mentioned test macro for multiple power cell, and step comprises:
1) to be exported to each measured power unit by described testing power supply adjustment module needed for testing power supply, start test;
2) control command of each for correspondence measured power unit is encoded by described master controller respectively, and the control signal obtaining corresponding each measured power unit is sent to described test optical fiber looped network; Each described measured power unit receives corresponding control signal respectively and resolves from test optical fiber looped network, acquires target control instruction, and performs test according to described target control instruction respectively;
3) gather the state information of each measured power unit and encode, obtain the status signal of corresponding each measured power unit and be sent to described master controller through described test optical fiber looped network; Described master controller is resolved the status signal received, and obtains the state information of corresponding each measured power unit.
As the further improvement of method of testing of the present invention, described concrete steps of carrying out encoding are: encode according to start bit field, address bit field, data bit field and position of rest field, the address of described address bit field for distributing corresponding to the position of measured power unit in test optical fiber looped network, described data bit field is the control command or state information that measured power unit is corresponding.
As the further improvement of method of testing of the present invention, described step 2) in acquire target control instruction concrete steps be: receive the control signal of each measured power unit and obtain the address of current measured power unit, to receive each described in control signal resolve, the described address of current measured power unit is mated with the address bit field of control signal described in each, obtain the control signal of corresponding current measured power unit, and acquire corresponding control command as target control instruction by data bit field.
As the further improvement of method of testing of the present invention, the concrete steps obtaining the state information of corresponding each measured power unit in described step 3) are: the status signal receiving corresponding each measured power unit is resolved, obtain the address information of address bit field and the state information of data bit field in each status signal, obtained the state information of corresponding each measured power unit by address information and the corresponding relation of each measured power unit.
Compared with prior art, the invention has the advantages that:
1) the present invention utilizes the syndeton characteristic between power cell and makes full use of test resource, optical fiber ring network test module forms test access by each measured power is unit cascaded, test optical fiber looped network is formed again in conjunction with a master controller, each control command and state information is transmitted by test optical fiber looped network, the testing results of multiple power cell can be realized simultaneously, greatly improve testing efficiency simultaneously; Owing to only needing the testing and control that directly can be realized each measured power unit by an optical fibre channel, do not need through transferring equipment, test operation is simple, effectively can reduce testing cost.
3) the present invention adopts inductive load as test load further, the characteristic that inductive load can be utilized variable-current to be had to inhibition is tested the diode continuousing flow ability in IGBT power cell, the power supply capacity that simultaneously can reduce needed for power supply capacity is little, thus reduces power supply cost;
2) the present invention carries out communication further by a monitoring module and master controller, can realize the testing and control to multiple measured power unit and real-time status monitoring;
4) the present invention is by distributing an address for each measured power unit, define a set of serial communication protocol based on the address distributed and realize the communication of test optical fiber ring network data, each control command, state information are encoded according to serial communication protocol data format respectively, control command, the state information of corresponding each measured power unit can be obtained by the parsing of coded signal, thus testing and control and the status monitoring of multiple measured power unit can be realized in an optical fibre channel.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present embodiment for the test macro of multiple power cell.
Fig. 2 is the structural principle schematic diagram of test optical fiber looped network in the present embodiment.
Fig. 3 is the structural representation of serial communication protocol data format in the present embodiment.
Embodiment
Below in conjunction with Figure of description and concrete preferred embodiment, the invention will be further described, but protection range not thereby limiting the invention.
As shown in Figure 1, the present embodiment is used for the test macro of multiple power cell, comprise the testing power supply adjustment module, the optical fiber ring network test module and for providing the test load module of test load that connect successively, optical fiber ring network test module comprises main controller and multiple measured power unit, each measured power unit forms test access by optical fiber successively cascade, master controller connects and composes test optical fiber looped network with the two ends of test access respectively by optical fiber, namely forms optical fiber ring network between main controller device with each measured power unit and is connected; The control command that master controller sends transfers to corresponding measured power unit through test optical fiber looped network, and the state information that each measured power unit sends is back to master controller through test optical fiber looped network.Testing power supply adjustment module is specially voltage regulator, provides rated operational voltage to each measured power unit by voltage regulator.
High voltage converter product is all be made up of multiple cascade of power units usually, namely the present embodiment is utilize the syndeton characteristic between power cell to make full use of test resource, optical fiber ring network test module forms test access by each measured power is unit cascaded, test optical fiber looped network is formed again in conjunction with a master controller, each control command and state information is transmitted by test optical fiber looped network, the testing results of multiple power cell can be realized simultaneously, greatly improve testing efficiency simultaneously; Owing to only needing the testing and control that directly can be realized each measured power unit by an optical fibre channel, do not need through transferring equipment, test operation is simple, effectively can reduce testing cost.
As shown in Figure 2, the present embodiment specifically connects and composes test access by each measured power unit controls plate by optical fiber successively cascade, namely test access is formed by the fiber-optic transceiver device of each measured power unit controls plate, head and the tail in test access two measured power unit controls plates connect top level control plate respectively by optical fiber and form test optical fiber looped network, are controlled as the operating state of main controller to each measured power unit by top level control plate.Form test optical fiber looped network in conjunction with fiber-optic transceiver device in each measured power unit controls plate, can test resource be made full use of, thus reduce the cost needed for test.
In the present embodiment, test load module comprises multiple inductive load unit, and each inductive load unit is connected with a measured power unit.The present embodiment adopts inductive load as test load, the characteristic that inductive load can be utilized variable-current to be had to inhibition is tested the diode continuousing flow ability in IGBT power cell, the power supply capacity that simultaneously can reduce needed for power supply capacity is little, thus reduces power supply cost.Tradition adopt continue copped wave in the method for testing of power device be adopt ohmic load as test load, for a series of Key Performance Indicators such as sense switch device cut-ff voltage and On currents, it is in copped wave process of the test, power supply needs to continue to charge to Support Capacitor, namely need to continue to provide continuous impulse signal to the drive circuit of switching device tested in power cell by control unit, carry out driving switch break-over of device with this to turn off, the power supply cost that thus required power supply capacity is larger, required is higher.
As shown in Figure 1, in the present embodiment, each inductive load unit is connected by the wiring cabinet containing selector switch with a measured power unit, is controlled the output of inductive load unit by the selector switch of wiring cabinet.The present embodiment selector switch is specially chopper switch, inductive load unit comprises multiple (the present embodiment gets 3 ~ 5) inductive load, can regulate disconnecting link in wiring cabinet according to the power grade of measured power unit during test, the connection in series-parallel combination realizing multiple inductive load exports to select different inductive loads.
As shown in Figure 2, the monitoring module be connected with optical fiber ring network test module is also comprised in the present embodiment, monitoring module sends the control command of the parameters of corresponding each measured power unit to master controller, and the state information of each measured power unit is received by master controller, monitoring module is specially the supervisory control system run and have monitoring program.Man-machine interaction can be realized by monitoring module, namely different test parameters can be set the power grade different according to measured power unit by monitoring module tester, again control command corresponding for test parameter is issued to top level control plate, receives status information feedback that top level control plate uploads to tester simultaneously.
During test, the control command of each for correspondence measured power unit is sent to top level control plate by monitoring module, top level control plate is sent to test optical fiber looped network after control command being encoded, through test optical fiber looped network, control command is transferred to each measured power unit controls plate, realize the testing and control to each measured power unit; Each measured power unit controls plate (pulse distribution unit) gathers the state information of measured power unit simultaneously, send it back top level control plate through test optical fiber looped network after state information being encoded, by top level control plate by the status information feedback that receives to monitoring module.
The method of testing step of the above-mentioned test macro for multiple power cell is utilized to comprise in the present embodiment:
1) to be exported to each measured power unit by testing power supply adjustment module needed for testing power supply, start test;
2) control command of each for correspondence measured power unit is encoded by master controller respectively, and the control signal obtaining corresponding each measured power unit is sent to test optical fiber looped network; Each measured power unit receives corresponding control signal respectively and resolves from test optical fiber looped network, acquires target control instruction, and performs test according to target control instruction respectively;
3) gather the state information of each measured power unit and encode, obtain the status signal of corresponding each measured power unit and be sent to master controller through test optical fiber looped network; Master controller is resolved the status signal received, and obtains the state information of corresponding each measured power unit.
The present embodiment is that each measured power unit distributes an address, define a set of serial communication protocol based on the address distributed and realize the communication of test optical fiber ring network data, each control command, state information are encoded according to serial communication protocol data format respectively, by can obtain control command, the state information of corresponding each measured power unit to the parsing of coded signal.As shown in Figure 3, after the control command of corresponding each measured power unit is encoded, obtain the control signal be made up of N number of code signal, N is the number of measured power unit; Accordingly, after the state information of each for correspondence measured power unit being encoded, the status signal be made up of N number of code signal is obtained.
In the present embodiment, step 2) in the concrete steps of carrying out encoding be: encode according to start bit field, address bit field, data bit field and position of rest field, the address of address bit field for distributing according to the position of measured power unit in test access, data bit field is the control command or state information that measured power unit is corresponding, namely the data format based on each code signal of serial communication protocol comprises the bit fields such as start bit, address bit, data bit and position of rest, can arranging according to the actual requirements of bit field.
In the present embodiment, bit field arranges as follows:
Start bit, for indicating the beginning of a transmission character, for continuing the logical zero level of a bit-time;
Address bit, for defining the address location in the test optical fiber looped network of measured power unit place, such as, address bit near the measured power unit of the transmission optical fiber side of master controller is set to 001;
Data bit is valid data position, contains the power cell state information of control command information or the power unit control plate feedback issued by master controller; Data bit is specially 16, immediately following after address bit;
Check digit, for parity check, is only one;
Position of rest, for indicating the end transmitting data character, is only one.
The present embodiment, step 2) in acquire target control instruction concrete steps be: receive the control signal of each measured power unit and obtain the address of current measured power unit, each control signal received is resolved, the address of current measured power unit is mated with the address bit field of each control signal, obtain the control signal of corresponding current measured power unit, and acquire corresponding control command as target control instruction by data bit field.
In the present embodiment, the concrete steps obtaining the state information of corresponding each measured power unit in step 3) are: the status signal receiving corresponding each measured power unit is resolved, obtain the address information of address bit field and the state information of data bit field in each status signal, obtained the state information of corresponding each measured power unit by address information and the corresponding relation of each measured power unit.
The present embodiment is each measured power unit allocation address in test optical fiber looped network, by above-mentioned serial communication protocol, each measured power unit receives corresponding control signal according to the address location at place, master controller determines corresponding power cell according to the address bit of each status signal received simultaneously, testing efficiency is high, can realize testing and control and the status monitoring of each measured power unit in an optical fibre channel.
Above-mentioned just preferred embodiment of the present invention, not does any pro forma restriction to the present invention.Although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention.Therefore, every content not departing from technical solution of the present invention, according to the technology of the present invention essence to any simple modification made for any of the above embodiments, equivalent variations and modification, all should drop in the scope of technical solution of the present invention protection.
Claims (9)
1. the test macro for multiple power cell, it is characterized in that: comprise the testing power supply adjustment module, the optical fiber ring network test module and for providing the test load module of test load that connect successively, described optical fiber ring network test module comprises main controller and multiple measured power unit, measured power unit described in each forms test access by optical fiber successively cascade, and described master controller connects and composes test optical fiber looped network with the two ends of described test access respectively by optical fiber; The control command that described master controller sends transfers to corresponding measured power unit through described test optical fiber looped network, and the state information that each described measured power unit sends is back to described master controller through described test optical fiber looped network.
2. the test macro for multiple power cell according to claim 1, is characterized in that: described test load module comprises multiple inductive load unit, and each described inductive load unit is connected with a described measured power unit.
3. the test macro for multiple power cell according to claim 2, it is characterized in that: each described inductive load unit is connected by the wiring cabinet containing selector switch with a described measured power unit, is controlled the output of described inductive load unit by the selector switch of described wiring cabinet.
4. the test macro for multiple power cell according to claim 3, is characterized in that: described testing power supply adjustment module is voltage regulator.
5. according to the test macro for multiple power cell in Claims 1 to 4 described in any one, it is characterized in that: also comprise the monitoring module be connected with described optical fiber ring network test module, described monitoring module sends the control command of the test parameter of corresponding each measured power unit to described master controller, and is received the state information of each measured power unit by described master controller.
6., according to the method for testing of the test macro for multiple power cell in Claims 1 to 5 described in any one, it is characterized in that, step comprises:
1) to be exported to each measured power unit by described testing power supply adjustment module needed for testing power supply, start test;
2) control command of each for correspondence measured power unit is encoded by described master controller respectively, and the control signal obtaining corresponding each measured power unit is sent to described test optical fiber looped network; Each described measured power unit receives corresponding control signal respectively and resolves from test optical fiber looped network, acquires target control instruction, and performs test according to described target control instruction respectively;
3) gather the state information of each measured power unit and encode, obtain the status signal of corresponding each measured power unit and be sent to described master controller through described test optical fiber looped network; Described master controller is resolved the status signal received, and obtains the state information of corresponding each measured power unit.
7. method of testing according to claim 6, it is characterized in that, described concrete steps of carrying out encoding are: encode according to start bit field, address bit field, data bit field and position of rest field, the address of described address bit field for distributing corresponding to the position of measured power unit in test optical fiber looped network, described data bit field is the control command or state information that measured power unit is corresponding.
8. method of testing according to claim 7, it is characterized in that, described step 2) in acquire target control instruction concrete steps be: receive the control signal of each measured power unit and obtain the address of current measured power unit, to receive each described in control signal resolve, the described address of current measured power unit is mated with the address bit field of control signal described in each, obtain the control signal of corresponding current measured power unit, and acquire corresponding control command as target control instruction by data bit field.
9. the method for testing according to claim 7 or 8, it is characterized in that, the concrete steps obtaining the state information of corresponding each measured power unit in described step 3) are: the status signal receiving corresponding each measured power unit is resolved, obtain the address information of address bit field and the state information of data bit field in each status signal, obtained the state information of corresponding each measured power unit by described address information and the corresponding relation of each measured power unit.
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| CN109696588A (en) * | 2017-10-23 | 2019-04-30 | 中国科学院空间应用工程与技术中心 | Space station scientific experiment cupboards are carried out with the system and method for load simulated test |
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| CN112115008A (en) * | 2020-09-16 | 2020-12-22 | 天津津航计算技术研究所 | Method and system for testing one-to-many data recorder |
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