CN104883221B - A kind of test system and its method of testing for multiple power cells - Google Patents
A kind of test system and its method of testing for multiple power cells Download PDFInfo
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- CN104883221B CN104883221B CN201510281781.0A CN201510281781A CN104883221B CN 104883221 B CN104883221 B CN 104883221B CN 201510281781 A CN201510281781 A CN 201510281781A CN 104883221 B CN104883221 B CN 104883221B
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Abstract
The present invention discloses a kind of test system and its method of testing for multiple power cells, the test system includes test power supply adjustment module, optical fiber ring network test module and the test load module for providing test load being sequentially connected, optical fiber ring network test module includes main controller and multiple measured power units, each measured power unit cascades composition test access by optical fiber successively, and master controller connects and composes test optical fiber looped network with the both ends of test access respectively by optical fiber；The control instruction that master controller is sent is transmitted to corresponding measured power unit through test optical fiber looped network, and the status information that each measured power unit is sent is back to master controller through test optical fiber looped network；The method of testing is the method for testing of above-mentioned test system.The present invention can realize the test of multiple power cells, have the advantages of test operation is simple, required cost is low, testing efficiency and resource utilization are high.
Description
Technical field
The present invention relates to power cell technical field of measurement and test, more particularly to a kind of test system for multiple power cells
And its method of testing.
Background technology
Power electronic devices medium-high voltage frequency converter product is made up of multiple cascade of power units, but currently for
It is all separate unit power cell test system that the test system of power cell is most of, i.e., can be only done a power cell every time and survey
Examination, its testing efficiency is low and the resource utilization such as test equipment is low, particularly in the application of production in enormous quantities, can not meet speed
Degree is fast, the test request of low cost.
There is practitioner to propose by being uniformly controlled the solution for realizing that multiple power cells are tested, such as Chinese patent application
CN104422838 A disclose a kind of electric and electronic power module test runtime, are connected by one or more power cells
One control unit, control unit control the working condition of module to be measured by optical fiber, and master controller passes through exchange using netting twine
Machine communicates with control unit, so as to meet the testing results of multiple power cells.But such scheme needs each to be tested
Power cell carries out optical fiber with control unit and is connected to realize that control data communicates, and test structure is complicated to add test simultaneously
Cost, and when power cell quantity to be tested is more, generally also need to combine master controller and multiple control units are made
The testing and control of each power cell is completed for transferring equipment, further increases test complexity and testing cost.
The content of the invention
The technical problem to be solved in the present invention is that：For technical problem existing for prior art, the present invention provides one
Kind test operation is simple, can realize multiple power cells tests, while required cost is low, testing efficiency and test resource are sharp
With the high test system and its method of testing for multiple power cells of rate.
In order to solve the above technical problems, technical scheme proposed by the present invention is：
A kind of test system for multiple power cells, including test power supply adjustment module, the fiber optic loop being sequentially connected
Net test module and the test load module for providing test load, the optical fiber ring network test module include main controller with
And multiple measured power units, each measured power unit cascade composition test access, the master control by optical fiber successively
Device processed connects and composes test optical fiber looped network with the both ends of the test access respectively by optical fiber；The control that the master controller is sent
System instruction transmits the state sent to corresponding measured power unit, each measured power unit through the test optical fiber looped network
Information is back to the master controller through the test optical fiber looped network.
Further improvement as present system：The test load module includes multiple inductive load units, each
The inductive load unit is connected with a measured power unit.
Further improvement as present system：Each inductive load unit and a measured power unit
Connected by the wiring cabinet containing selecting switch, the defeated of the inductive load unit is controlled by the selecting switch of the wiring cabinet
Go out.
Further improvement as present system：The test power supply adjustment module is pressure regulator.
Further improvement as present system：Also include the monitoring mould being connected with the optical fiber ring network test module
Block, the monitoring module send the control instruction of the arrange parameter of corresponding each measured power unit to the master controller, and
The status information of each measured power unit is received by the master controller.
The present invention also provides a kind of method of testing based on the above-mentioned test system for multiple power cells, step bag
Include：
1）Required test power supply is exported to each measured power unit by the test power supply adjustment module, starts and surveys
Examination；
2）The master controller is encoded the control instruction of corresponding each measured power unit respectively, obtains corresponding each quilt
The control signal of power scale unit is sent to the test optical fiber looped network；Each measured power unit is respectively from test optical fiber ring
Control signal corresponding to being received in net is parsed, and acquires target control instruction, and refer to respectively according to the target control
Order performs test；
3）Gather the status information of each measured power unit and encoded, obtain the state of corresponding each measured power unit
Signal is simultaneously sent to the master controller through the test optical fiber looped network；The master controller is carried out to the status signal received
Parsing, obtain the status information of corresponding each measured power unit.
As the further improvement of method of testing of the present invention, it is described encoded concretely comprise the following steps：According to start bit word
Section, address bit field, data bit field and stopping bit field being encoded, and the address bit field is according to measured power list
The address distributed corresponding to position of the member in test optical fiber looped network, the data bit field are to be controlled corresponding to measured power unit
System instruction or status information.
As the further improvement of method of testing of the present invention, the step 2）In acquire target control instruction it is specific
Step is：Receive the control signal of each measured power unit and obtain the address of current measured power unit, it is each to what is received
The individual control signal is parsed, by the address of the current measured power unit and the address bit of each control signal
Field is matched, and obtains the control signal of corresponding current measured power unit, and acquire correspondingly by data bit field
Control instruction as target control instruct.
As the further improvement of method of testing of the present invention, the step 3）In obtain the shape of corresponding each measured power unit
State information concretely comprises the following steps：The status signal for receiving corresponding each measured power unit is parsed, and obtains each status signal
The address information of middle address bit field and the status information of data bit field, by address information and pair of each measured power unit
The status information for obtaining corresponding each measured power unit should be related to.
Compared with prior art, the advantage of the invention is that：
1）The present invention utilizes the attachment structure 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, forms test optical fiber looped network in conjunction with a master controller, passes through
Test optical fiber looped network transmits each control instruction and status information, can realize the testing results of multiple power cells simultaneously, simultaneously
Greatly improve testing efficiency；Due to only needing can be directly realized by the survey of each measured power unit by an optical fibre channel
Examination control, it is not necessary to which by transferring equipment, test operation is simple, can effectively reduce testing cost.
3）The present invention can utilize inductive load to have variable-current further using inductive load as test load
The characteristic of inhibition is tested the diode continuousing flow ability in IGBT power cells, while can be reduced needed for power supply capacity
Power supply capacity it is small, so as to reduce power supply cost；
2）The present invention is further communicated by a monitoring module with master controller, it is possible to achieve to multiple by measurement of power
The testing and control and real-time status monitoring of rate unit；
4）By distributing an address for each measured power unit, the address based on distribution defines a set of serial the present invention
Communications protocol realizes that test optical fiber ring network data communicates, and each control instruction, status information are respectively according to serial communication protocol number
Encoded according to form, control instruction, the state of corresponding each measured power unit can be obtained by the parsing of coded signal
Information, so as to which the testing and control and status monitoring of multiple measured power units can be achieved in an optical fibre channel.
Brief description of the drawings
Fig. 1 is the structural representation for the test system that the present embodiment is used for multiple power cells.
Fig. 2 is the 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 specific preferred embodiment, the invention will be further described, but not therefore and
Limit the scope of the invention.
As shown in figure 1, the present embodiment is used for the test system of multiple power cells, including the test power supply being sequentially connected is adjusted
Save module, optical fiber ring network test module and the test load module for providing test load, optical fiber ring network test module bag
Main controller and multiple measured power units are included, each measured power unit cascades composition test access by optical fiber successively, main
Controller connects and composes test optical fiber looped network, i.e. main controller device and each measured power with the both ends of test access respectively by optical fiber
Optical fiber ring network connection is formed between unit；The control instruction that master controller is sent is transmitted to corresponding tested through test optical fiber looped network
Power cell, the status information that each measured power unit is sent are back to master controller through test optical fiber looped network.Power supply is tested to adjust
It is specially pressure regulator to save module, and rated operational voltage is provided to each measured power unit by pressure regulator.
High voltage converter product is made up of multiple cascade of power units, and the present embodiment is to utilize power cell
Between attachment structure characteristic make full use of test resource, optical fiber ring network test module forms survey by each measured power is unit cascaded
Ping road, test optical fiber looped network formed in conjunction with master controller, by test optical fiber looped network transmit each control instruction and
Status information, the testing results of multiple power cells can be realized simultaneously, while greatly improve testing efficiency；Due to only needing
The testing and control of each measured power unit can be directly realized by by an optical fibre channel, it is not necessary to by transferring equipment, test
It is simple to operate, it can effectively reduce testing cost.
As shown in Fig. 2 the present embodiment is specifically to pass through optical fiber successively cascade Connection structure by each measured power unit control panel
Into test access, i.e., test access is formed by the fiber-optic transceiver device of each measured power unit control panel, the head in test access
Two measured power unit control panels of tail are connected top level control plate by optical fiber and form test optical fiber looped network respectively, by top level control
Plate is controlled as main controller to the working condition of each measured power unit.With reference to optical fiber in each measured power unit control panel
R-T unit forms test optical fiber looped network, can make full use of test resource, so as to reduce the cost needed for test.
In the present embodiment, test load module includes multiple inductive load units, each inductive load unit and a quilt
Power scale unit connects.The present embodiment, as test load, can utilize inductive load to have variable-current using inductive load
The characteristic for having inhibition is tested the diode continuousing flow ability in IGBT power cells, while can reduce power supply capacity institute
The power supply capacity needed is small, so as to reduce power supply cost.It is conventionally employed to continue copped wave to being to use in the method for testing of power device
Ohmic load is a series of Key Performance Indicators such as detection switch device blanking voltage and conducting electric current as test load, its
During copped wave experiment, power supply needs persistently to charge to Support Capacitor, that is, needs by control unit persistently to power cell
In be tested the drive circuit of switching device continuous impulse signal be provided, the shut-off of driving switch break-over of device is come with this, it is thus required
Larger, the required power supply cost of power supply capacity is higher.
As shown in figure 1, in the present embodiment each inductive load unit with a measured power unit by being opened containing selection
The wiring cabinet connection of pass, the output of inductive load unit is controlled by the selecting switch of wiring cabinet.The present embodiment selecting switch has
Body is chopper switch, and inductive load unit includes multiple（The present embodiment takes 3 ~ 5）Inductive load, can be according to by measurement of power during test
Disconnecting link in the power grade regulation wiring cabinet of rate unit, realizes that the connection in series-parallel of multiple inductive loads is combined to select different inductance
Load output.
As shown in Fig. 2 also include the monitoring module being connected with optical fiber ring network test module, monitoring module hair in the present embodiment
The control instruction of the arrange parameter of corresponding each measured power unit is sent to receive each be tested to master controller, and by master controller
The status information of power cell, monitoring module are specially to run the monitoring system for having monitoring programme.It can be realized by monitoring module
Man-machine interaction, i.e., different tests can be set according to the different power grade of measured power unit by monitoring module tester
Parameter, then control command corresponding to test parameter is issued to top level control plate, while receive the state of top level control plate upload
Feedback of the information is to tester.
During test, monitoring module sends the control command of corresponding each measured power unit to upper strata control panel, upper strata control
Making sheet is sent to test optical fiber looped network after control command is encoded, and is transmitted control command to each quilt through test optical fiber looped network
Power scale unit control panel, realize the testing and control to each measured power unit；Each measured power unit control panel simultaneously（Pulse
Allocation unit）The status information of measured power unit is gathered, is sent back after status information is encoded through test optical fiber looped network
Top level control plate, by top level control plate by the status information feedback received to monitoring module.
The method of testing step of the above-mentioned test system for multiple power cells is utilized in the present embodiment to be included：
1）Required test power supply is exported to each measured power unit by testing power supply adjustment module, starts test；
2）Master controller is encoded the control instruction of corresponding each measured power unit respectively, is obtained corresponding each by measurement of power
The control signal of rate unit is sent to test optical fiber looped network；Each measured power unit receives corresponding from test optical fiber looped network respectively
Control signal parsed, acquire target control instruction, and respectively according to target control instruction perform test；
3）Gather the status information of each measured power unit and encoded, obtain the state of corresponding each measured power unit
Signal is simultaneously sent to master controller through test optical fiber looped network；Master controller parses to the status signal received, obtains pair
Answer the status information of each measured power unit.
The present embodiment is that each measured power unit distributes an address, and the address based on distribution defines a set of serial communication
Protocol realization test optical fiber ring network data communicates, and each control instruction, status information are respectively according to serial communication protocol data lattice
Formula is encoded, and control instruction, the state of corresponding each measured power unit can be obtained by the parsing to coded signal
Information.As shown in figure 3, after the control instruction of corresponding each measured power unit is encoded, obtain what is be made up of N number of encoded signal
Control signal, N are the number of measured power unit；Accordingly, the status information of corresponding each measured power unit is encoded
Afterwards, the status signal being made up of N number of encoded signal is obtained.
In the present embodiment, step 2）It is middle encoded concretely comprise the following steps：According to starting bit field, address bit field, number
Encoded according to bit field and stopping bit field, address bit field is the position according to measured power unit in test access
The address distributed, data bit field is control instruction or status information corresponding to measured power unit, i.e., based on serial communication
The data format of each encoded signal of agreement includes the bit fields such as start bit, address bit, data bit and stop position, bit field
Can be configured according to the actual requirements.
Bit field is set as follows in the present embodiment：
Start bit, for indicating the beginning of one character of transmission, to continue the logical zero level of a bit-time；
Address bit, for the address location in test optical fiber looped network where defining measured power unit, such as near master
The address bit of the measured power unit of the transmission optical fiber side of controller is arranged to 001；
Data bit, it is valid data position, contains the control command information issued by master controller or power cell control
The power cell status information of plate feedback；Data bit is specially 16, after address bit；
Check bit, for even-odd check, only one；
Stop position, for indicate transmission data character end, only one.
The present embodiment, step 2）In acquire target control instruction concretely comprise the following steps：Receive each measured power unit
Control signal and obtain the address of current measured power unit, each control signal received is parsed, will be current
The address of measured power unit is matched with the address bit field of each control signal, obtains corresponding current measured power unit
Control signal, and by data bit field acquire corresponding to control instruction be used as target control instruction.
In the present embodiment, step 3）In obtain the status information of corresponding each measured power unit and concretely comprise the following steps：Receive
The status signal of corresponding each measured power unit is parsed, obtain the address information of address bit field in each status signal with
And the status information of data bit field, by address information each measured power corresponding with the corresponding relation acquisition of each measured power unit
The status information of unit.
The present embodiment is that each measured power unit distributes address in test optical fiber looped network, is assisted by above-mentioned serial communication
View, each measured power unit control signal according to corresponding to receiving the address location at place, while master controller is according to reception
The address bit of each status signal arrived determines corresponding power cell, and testing efficiency is high, can be real in an optical fibre channel
The now testing and control and status monitoring of each measured power unit.
Above-mentioned simply presently preferred embodiments of the present invention, not makees any formal limitation to the present invention.It is although of the invention
It is disclosed above with preferred embodiment, but it is not limited to the present invention.Therefore, it is every without departing from technical solution of the present invention
Content, according to the technology of the present invention essence to any simple modifications, equivalents, and modifications made for any of the above embodiments, it all should fall
In the range of technical solution of the present invention protection.
Claims (8)
- A kind of 1. test system for multiple power cells, it is characterised in that：Test power supply including being sequentially connected adjusts mould Block, optical fiber ring network test module and the test load module for providing test load, the optical fiber ring network test module bag Main controller and multiple measured power units are included, it is logical that each measured power unit cascades composition test by optical fiber successively Road, the master controller connect and compose test optical fiber looped network with the both ends of the test access respectively by optical fiber；The master control The control instruction that device processed is sent is transmitted to corresponding measured power unit, each measured power list through the test optical fiber looped network The status information that member is sent is back to the master controller through the test optical fiber looped network；The test load module includes multiple inductive load units, each inductive load unit and one it is described by measurement of power Rate unit connects.
- 2. the test system according to claim 1 for multiple power cells, it is characterised in that：Each inductance is born Carrier unit is connected with a measured power unit by the wiring cabinet containing selecting switch, passes through the selection of the wiring cabinet Switch controls the output of the inductive load unit.
- 3. the test system according to claim 2 for multiple power cells, it is characterised in that：The test power supply is adjusted Section module is pressure regulator.
- 4. the test system for multiple power cells according to any one in claims 1 to 3, it is characterised in that： Also include the monitoring module being connected with the optical fiber ring network test module, the monitoring module sends corresponding each measured power unit Test parameter control instruction to the master controller, and receive by the master controller shape of each measured power unit State information.
- A kind of 5. test side of test system for multiple power cells using described in any one in Claims 1 to 44 Method, it is characterised in that step includes：1）Required test power supply is exported to each measured power unit by the test power supply adjustment module, starts test；2）The master controller is encoded the control instruction of corresponding each measured power unit respectively, is obtained corresponding each by measurement of power The control signal of rate unit is sent to the test optical fiber looped network；Each measured power unit is respectively from test optical fiber looped network Control signal is parsed corresponding to reception, acquires target control instruction, and held respectively according to target control instruction Row test；3）Gather the status information of each measured power unit and encoded, obtain the status signal of corresponding each measured power unit And sent through the test optical fiber looped network to the master controller；The master controller solves to the status signal received Analysis, obtain the status information of corresponding each measured power unit.
- 6. method of testing according to claim 5, it is characterised in that it is described encoded concretely comprise the following steps：According to rise Beginning bit field, address bit field, data bit field and stopping bit field being encoded, and the address bit field is according to tested The address distributed corresponding to position of the power cell in test optical fiber looped network, the data bit field are measured power unit pair The control instruction or status information answered.
- 7. method of testing according to claim 6, it is characterised in that the step 2）In acquire target control instruction Concretely comprise the following steps：Receive the control signal of each measured power unit and obtain the address of current measured power unit, to receiving To each control signal parsed, by the address of the current measured power unit and each control signal Address bit field is matched, and obtains the control signal of corresponding current measured power unit, and obtain by data bit field Instructed to corresponding control instruction as target control.
- 8. the method for testing according to claim 6 or 7, it is characterised in that the step 3）In obtain it is corresponding each by measurement of power The status information of rate unit concretely comprises the following steps：The status signal for receiving corresponding each measured power unit is parsed, and is obtained every The status information of the address information of address bit field and data bit field in individual status signal, by the address information and each quilt The corresponding relation of power scale unit obtains the status information of corresponding each measured power unit.
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| CN105954610B (en) * | 2016-04-26 | 2018-11-16 | 株洲中车时代电气股份有限公司 | A kind of (PCC) power power examination test system |
| CN106199242A (en) * | 2016-06-27 | 2016-12-07 | 湖南中车特种电气装备有限公司 | A kind of traction convertor pilot system and method |
| CN109696588B (en) * | 2017-10-23 | 2023-09-08 | 中国科学院空间应用工程与技术中心 | System and method for carrying out load simulation test on space station science experiment cabinet |
| CN109471027B (en) * | 2018-11-20 | 2021-03-02 | 南京国电南自维美德自动化有限公司 | Power unit self-checking method of excitation system |
| CN109765471B (en) * | 2018-12-28 | 2020-06-23 | 上海交通大学 | Statistical test method for characteristics of power semiconductor device |
| CN109813984A (en) * | 2019-02-27 | 2019-05-28 | 大禹电气科技股份有限公司 | A kind of the power cell test macro and its test method of high-voltage frequency converter |
| CN110568294A (en) * | 2019-09-29 | 2019-12-13 | 南京南瑞继保电气有限公司 | Power electronic equipment test system and test method |
| CN112924842B (en) * | 2019-12-05 | 2023-06-20 | 沈机（上海）智能系统研发设计有限公司 | Step-down test topology circuit, test system/method, and storage medium |
| 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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