CN109324251A - A kind of converter module test macro - Google Patents
A kind of converter module test macro Download PDFInfo
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- CN109324251A CN109324251A CN201710635801.9A CN201710635801A CN109324251A CN 109324251 A CN109324251 A CN 109324251A CN 201710635801 A CN201710635801 A CN 201710635801A CN 109324251 A CN109324251 A CN 109324251A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/01—Subjecting similar articles in turn to test, e.g. "go/no-go" tests in mass production; Testing objects at points as they pass through a testing station
- G01R31/013—Testing passive components
Abstract
A kind of converter module test macro comprising: power supply unit is used for the electricity consumption device power supply to be tested in converter module and test macro；Pulse distribution device is used to provide pulse drive signal for tested current transformer；Test process control device, it is used to send corresponding control signal to power supply unit and pulse distribution device, so that power supply unit provides electric energy to the electricity consumption device of tested unsteady flow module and test process control module, and makes pulse distribution device generate corresponding pulse drive signal and pulse drive signal is sent to tested converter module；Self-operated measuring unit, be used for according to transmitted by test process control device come control instruction corresponding functional test is carried out to tested converter module.This system can greatly improve the testing efficiency of converter module, and the time for testing a converter module usually can be less than or equal to 5 minutes, so as to effectively meet the requirement of automatic production line pitch time.
Description
Technical field
The present invention relates to converter topology fields, specifically, being related to a kind of converter module test macro.
Background technique
Converter module is that the voltage for making power-supply system, frequency, the number of phases and other electricity or characteristic are changed electrical
Equipment specifically includes that rectifier (AC/DC), inverter (DC/AC), AC convertor (AC/AC) and DC transformer (DC
Chopper), very widely used in fields such as locomotive unsteady flow, industrial unsteady flow, wind-power electricity generation, ship electric drives.
However, in the production process of converter module, it is serious to hinder due to the multiple technologies disadvantage of existing test device
The efficiency and quality of production are hindered.Meanwhile as converter module product production capacity is promoted, production process quality control requirement
It more tends to stringent.Therefore, it is necessary to a kind of new converter module Auto-Test Systems.
Summary of the invention
To solve the above problems, the present invention provides a kind of converter module test macro, the system comprises:
Power supply unit is used for the electricity consumption device power supply to be tested in converter module and test macro；
Pulse distribution device is connect with the tested converter module, for providing pulse for the tested current transformer
Driving signal；
Test process control device is connect with the pulse distribution device and power supply unit, is used for described for Denso
It sets and sends corresponding control signal with pulse distribution device, so that the power supply unit is to the tested unsteady flow module and test
The electricity consumption device of process control module provides electric energy, and the pulse distribution device is made to generate corresponding pulse drive signal simultaneously
The pulse drive signal is sent to the tested converter module；
Self-operated measuring unit is connect with the test process control device, is filled for being controlled according to the test process
It sets transmitted next control instruction and corresponding functional test is carried out to the tested converter module.
According to one embodiment of present invention, the system also includes producing line opc servers and MES massaging device, wherein
The producing line opc server is configured to the converter module inquired in MES massaging device production order information, and is inquiring
The converter module production order information is downloaded when producing order information to converter module, and the converter module is produced
It is transmitted to the test process control device in current transformer information processed in order information, by the test process control device
According to described in the corresponding test program sequence of current transformer information configuration processed.
According to one embodiment of present invention, the system also includes:
Producing line end data acquisition device is connect with the test process control device, for detecting tested current transformer mould
The whether into or out test station of block, is correspondingly generated indication signal in place or indication signal of offing normal, and will be described in place
Indication signal or indication signal of offing normal are sent to the test process control device.
According to one embodiment of present invention, when receiving indication signal in place and receiving test starting signal,
The test process control device is configured to send corresponding control signal to the power supply unit, to control the power supply unit
Electric energy is provided to the tested converter module.
According to one embodiment of present invention, the pulse distribution device includes:
On-off model conditioning module is connect with the test process control device, for the test process control
The on-off model come transmitted by device processed carries out isolation conditioning；
First buffer is connect with the on-off model conditioning module；
Pulse drive signal generation module is connect with first buffer, for according to the switch after isolation conditioning
Amount signal generates and exports the pulse drive signal of corresponding channel；
Second buffer is connect with the pulse drive signal generation module；
Signal shaping module is connect with second buffer.
According to one embodiment of present invention, the self-operated measuring unit includes:
Capacitance charging module is connected between the power supply unit and tested converter module；
First voltage detection circuit is connect with the capacitance charging module, for measuring the capacitance charging module two
The voltage at end, and the first voltage signal of generation is transmitted to the test process control device.
According to one embodiment of present invention, the test process control device is configured to judge the first voltage signal
Whether the voltage characterized is greater than or equal to preset charge voltage, if it is, sending to the pulse distribution device corresponding
Signal is controlled, so that the pulse distribution device generates corresponding pulse drive signal and transmits the pulse drive signal
To the tested converter module.
According to one embodiment of present invention, the self-operated measuring unit further include:
Major loop route handoff module comprising the first switch unit and the second switch unit, wherein first switching
Each output port of unit and the tested converter module is correspondingly connected with, second switch unit and the capacitor charging
The connection of module, first switch unit and the second switch unit are ordinatedly by the specified output of the tested converter module
Galvanic circle between port and the positive or negative pole of the capacitance charging module is connected；
Inductive load module is connected between first switch unit and the second switch unit；
Current detection circuit is connect with the inductive load module, flows through the inductive load module for measuring
Electric current obtains sensed current signal；
Second voltage detection circuit is connect, for detecting with each output port of the tested converter module
The voltage between the appointed output terminal mouth of tested converter module and the positive or negative pole of the capacitance charging module is stated, is examined
Survey voltage signal.
According to one embodiment of present invention, the tested converter module includes the identical bridge arm of multiple structures, each
Bridge arm includes upper tube IGBT and down tube IGBT, wherein
When testing the upper tube IGBT in a bridge arm, first switch unit and the second switch unit are described
The negative of the output port and the capacitance charging module for being tested upper tube IGBT will be corresponded under the control of test process control device
Galvanic circle conducting between pole, meanwhile, the second voltage detection circuit is configured to detection and corresponds to tested upper tube IGBT's
Voltage between output port and the cathode of the capacitance charging module；
When testing the down tube IGBT in a bridge arm, first switch unit and the second switch unit are described
Under the control of test process control device just by the output port for corresponding to tested down tube IGBT and the capacitance charging module
Galvanic circle conducting between pole, meanwhile, the second voltage detection circuit is configured to detection and corresponds to tested upper tube IGBT's
Voltage between output port and the anode of the capacitance charging module.
According to one embodiment of present invention, the self-operated measuring unit further include:
Safe-discharge module is connected between the positive electrode and negative electrode of the capacitance charging module, for absorbing conductive return
Dump energy in road.
In the prior art for the test intelligence of converter module by the way of manually testing, this mode is tested
One converter module usually requires half an hour or more, and testing efficiency is extremely low.In the test of large batch of production,
The problem of inefficiency present in the mode of this manual testing, is more prominent, seriously hinders the delivery process of product.
However converter module test macro provided by the present invention can greatly improve the testing efficiency of converter module.
The time of one converter module of system testing usually can be less than or equal to 5 minutes, so as to effectively meet automation
The requirement of production line pitch time.Meanwhile test macro provided by the present invention can be realized test equipment and automatic production line
Fusion and the interaction of MES information system, the main PLC of producing line can monitor test equipment working condition in real time, and by test result
Report will be uploaded to MES information system automatically.
IGBT driving pulse required for existing measuring technology needs manually to control, and pulse characteristic can not weigh
It sets, be easy to cause maloperation.However test macro provided by the present invention does not need in the test process to converter module
Manually intervened, the major loop route handoff module and measurement route handoff module energy Auto-matching test path of system are completed
Automatic measurement and data acquisition.Meanwhile the pulse distribution device in system can be according to the converter module of different type, series
The output of characteristic Auto-matching IGBT driving pulse.
In addition, the switch KM8 in system provided by the present invention in safe-discharge module is normally off, KM9 is normally opened
State.When system exception power down, switch KM8 remains to effectively be released by test specimen remaining capacity, to fully ensure that peace
The validity discharged entirely.Meanwhile system is completely isolated by test specimen and control equipment power supply, to prevent because different by test specimen
The test equipment secondary damage often resulted in.In addition, executed in logic in safety, it is various in system to power off, powered on interlocking function
Can, to fully ensure that the safety of operation.The test parameter covering of test macro provided by the present invention is wide, preferably can be simultaneous
Hold maximum input voltage DC4000V, the complete set converter module of power maximum 1200KW.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.Objectives and other advantages of the present invention can be by specification, right
Specifically noted structure is achieved and obtained in claim and attached drawing.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is required attached drawing in technical description to do simple introduction:
Fig. 1 is the structural schematic diagram of converter module test macro according to an embodiment of the invention；
Fig. 2 is the particular circuit configurations schematic diagram of converter module test macro according to an embodiment of the invention；
Fig. 3 is the structural schematic diagram of pulse distribution device according to an embodiment of the invention；
Fig. 4 is the structural schematic diagram of self-operated measuring unit according to an embodiment of the invention；
Fig. 5 is the workflow schematic diagram of converter module test macro according to an embodiment of the invention；
Fig. 6 is the testing process schematic diagram according to an embodiment of the invention tested A phase IGBT.
Specific embodiment
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings and examples, how to apply to the present invention whereby
Technological means solves technical problem, and the realization process for reaching technical effect can fully understand and implement.It needs to illustrate
As long as not constituting conflict, each feature in each embodiment and each embodiment in the present invention can be combined with each other,
It is within the scope of the present invention to be formed by technical solution.
Meanwhile in the following description, for illustrative purposes and numerous specific details are set forth, to provide to of the invention real
Apply the thorough understanding of example.It will be apparent, however, to one skilled in the art, that the present invention can not have to tool here
Body details or described ad hoc fashion are implemented.
In addition, step shown in the flowchart of the accompanying drawings can be in the department of computer science of such as a group of computer-executable instructions
It is executed in system, although also, logical order is shown in flow charts, and it in some cases, can be to be different from herein
Sequence execute shown or described step.
The test of converter module generallys use the mode manually tested, and the testing efficiency of this test mode is low
Under, the time-consuming for testing a converter module is usually more than 30 minutes, and there are some potential safety problemss for Hi-pot test.
Meanwhile the output of IGBT driving pulse used in the test method of existing converter module needs manually
Control, and pulse characteristic can not be reset, and be easy to cause maloperation.When carrying out the switching of testing procedure, existing current transformer
The test method of module needs switching of manually closing a floodgate, this mode not only inefficiency, and has high pressure electric shock risk.
For the above problem present in existing converter module test macro, the present invention provides a kind of new current transformers
Module test system.The system can be realized the automatic measurement to converter module, so as to shorten the test of converter module
It is time-consuming.
In order to clearly illustrate the principle and advantage of converter module test macro provided by the present invention, below
The structural schematic diagram of converter module test macro and the current transformer mould shown in Fig. 2 in the present embodiment as shown in connection with fig. 1
The physical circuit schematic diagram of block test macro is further described the converter module test macro.
As shown in Figure 1, converter module test macro provided by the present embodiment preferably includes: power supply unit 101 is surveyed
Try process control equipment 102, pulse distribution device 103 and self-operated measuring unit 104.
Specifically, as shown in Fig. 2, in the present embodiment, power supply unit 101 is preferably included: the first DC power supply 101a,
Two DC power supply 101b, third DC power supply 101c, the 4th DC power supply 101d and the 5th DC power supply 101e.Wherein, originally
In embodiment, the first DC power supply 101a, the second DC power supply 101b, the 4th DC power supply 101d and the 5th DC power supply
101e is preferably programmable power supply, can be provided out electric energy under the control of test process control device 102.
Due to converter module test process be high-voltage great-current operation, in order to improve system reliability of operation and
Safety, in the present embodiment, the first DC power supply 101a preferably uses high pressure programme-controlled dc power DSP4000-2A to realize,
First DC power supply 101a can provide the direct current of 0~4000W, the second DC power supply 101b to tested converter module 105
It is preferably realized using N5770A, the second DC power supply 101b can provide 110V to the control section of tested converter module
Direct current.Third DC power supply 101c preferably uses PXC-2903148 to realize, third DC power supply 101c can be to test
Part electricity consumption device in process control equipment 102 and self-operated measuring unit 104 provides 24V direct current.4th DC power supply
101d preferably uses IPD-12003SLU to realize, the 4th DC power supply 101d can be to the height in self-operated measuring unit 104
It crimps tentaculum coil and 110V direct current is provided.5th DC power supply 101e preferably uses IPD-3303SLU to realize, the 5th is straight
Galvanic electricity source 101e can export 24V direct current to pulse distribution device 103.
It should be pointed out that in other embodiments of the invention, according to actual needs, power supply unit 101 can also adopt
It is realized with other reasonable power supply apparatus or circuit, the invention is not limited thereto.
Pulse distribution device 103 is connect with test process control device 102 and tested converter module 105, can
Pulse drive signal is provided to tested converter module 105 under the control of test process control device 102, so that tested
Corresponding IGBT operation, can also test the IGBT of operation in this way in converter module 105.
Test process control device 102 is connect with power supply unit 101 and pulse distribution device 103, is used for power supply
Device 101 and pulse distribution device 103 send corresponding control signal, so that power supply unit 101 is to tested current transformer mould
Electricity consumption device in block 105 and test process control module 102 provides electric energy, and pulse distribution device 103 is generated accordingly
Pulse drive signal and the pulse drive signal is sent to tested converter module 105.
In the present embodiment, as shown in Fig. 2, according to actual needs, which can also include producing line
Opc server 201 and MES massaging device 203.Wherein, producing line opc server 201 by producing line Ethernet switch 202 with
MES massaging device 203 connects.In the present embodiment, before the test begins, the producing line opc server 201 of automation can timing inquiry
Converter module in MES massaging device 203 produces order information.If producing line opc server 201 is from MES massaging device 203
In inquire converter module production order information when automatically by converter module production order information be downloaded on server.
After the downloading for completing converter module production order information, producing line opc server 201 can be according to above-mentioned current transformer
Module production order information, which is determined, is transmitted to the test being attached thereto in current transformer information processed in current transformer information processed, and by this
Process control device 102, to configure corresponding test program sequence in product type processed according to this by test process control device 102
Column.In addition, test process control device 102 is postponed in matching for completion test program sequence, can also complete to current each height
The initialization and resource distribution of module, so that the test of the converter module for that will start is prepared.
In order to improve the automatization level of the converter module test macro, in the present embodiment, as shown in Fig. 2, the unsteady flow
Device module test system can also include producing line end data acquisition device 204.Producing line end data acquisition device 204 and test process
Control device 102 connects, and is able to detect the whether into or out test station of tested converter module, and be correspondingly generated
Indication signal in place or indication signal of offing normal, while above-mentioned indication signal in place or indication signal of offing normal are sent to test process
Control device 102.
In the present embodiment, test process control device 102 is receiving indication signal in place and is receiving test starting
When signal, corresponding control signal can be sent, to power supply unit 101 to control power supply unit 101 to tested converter module
105 provide electric energy.
Specifically, producing line end data acquisition device 204 preferably includes RFID information acquisition module, test process control dress
It sets 102 and preferably includes the main PLC module 214 of producing line and testing control module 205.Wherein, producing line end data acquisition device 204 exists
Reading the wiring indicator light when converter module pallet processed enters test station, on station will light automatically, to remind
Operator's connecting test harness.Meanwhile safe door electromagnetic lock will fail to allow operator to carry out enabling patching operations.
The station " RUN " Status Flag received is sent to the main PLC module 214 of producing line by USB6525 Digital I/O.When operator is complete
After patching operations, harness signal in place will fail, operator's closed safe door and simultaneously start start testing button to
Test process control device 102 sends test starting signal, to start the auto test flow to the converter module.At this time
Testing control module will control power supply unit 101 to power on to tested converter module 105, while start self-operated measuring unit
104 to carry out corresponding DATA REASONING to tested converter module.Test process control device 102 can control pulse distribution device
103 generate and export corresponding pulse drive signal, to realize the test to power cell in tested converter module 105.
Fig. 3 shows the structural schematic diagram of pulse distributor 103 in the present embodiment.
It is the converter module of test different types, series in the present embodiment, what pulse distribution device 103 was exported
IGBT pulse drive signal characteristic can be reset.Specifically, as shown in figure 3, testing control module can be according to currently in product processed
Model carrys out the burning program file of strobe pulse driving signal generation module 301, and testing control module 205 is through XILINX emulator
302 are burnt to the burning program file by JATG programming interface 303 storage of pulse drive signal generation module 301 itself
In device, realize that program is matched to the currently IGBT driving pulse characteristic in product signal processed in memory.
In the present embodiment, pulse signal generation module 301 is preferably realized using CPLD programmable logic device.When
So, in other embodiments of the invention, pulse signal generation module 301 can also using other reasonable devices or circuit come
It realizes, the invention is not limited thereto.
On-off model mode transfer block 304 will can transmit from the test station PLC module 206 in test process control device
On-off model carry out being transmitted to the first buffer 305 being attached thereto after isolation conditioning, later first buffer 305 carries out
The pulse drive signal generation module 301 being attached thereto is transmitted to after processing.
Pulse drive signal generation module 301 can generate according to the switching magnitude recognized and export the arteries and veins of corresponding channel
Driving signal is rushed, and the pulse drive signal is transmitted to the second buffer 306 being attached thereto, then using signal shaping
Fiber optical transceiver 308 is transmitted to after the shaping filter of module 307, to be sent to tested current transformer mould by fiber optical transceiver 308
Block 105.
In the present embodiment, signal shaping module 307 preferably uses schmidt shaping circuit.Certainly, in of the invention its
In its embodiment, signal shaping module 307 can also be realized using other reasonable devices or circuit, the present invention is not limited to
This.
Simultaneously, it should be pointed out that in other embodiments of the invention, pulse distribution device 103 can also use it
Pulse drive signal is sent to tested converter module 105 by its reasonable circuit or device, and the present invention is similarly not so limited to.
In the present embodiment, pulse distribution device 103 preferably receives 16 road DC24V switching values from test station PLC module
Signal, and 16 road IGBT pulse drive signal of final output.Certainly, in other embodiments of the invention, pulse distribution device
The number value of 103 signals for receiving and/or exporting can also be other reasonable values (such as 10 road IGBT pulse drive signals
Deng), the invention is not limited thereto.
Again as shown in Fig. 2, in the present embodiment, self-operated measuring unit 104 is preferably included: 207 He of capacitance charging module
First voltage detection circuit 208.Wherein, capacitance charging module 207 is connected to power supply unit 101 and tested converter module 105
Between.First voltage detection circuit 208 is connect with capacitance charging module 207, can measure 207 both ends of capacitance charging module
Voltage, and the first voltage signal of generation is transmitted to test station PLC module 206.
Specifically, in the present embodiment, test station PLC module 206 judges the electricity that above-mentioned first voltage signal is characterized
Whether pressure is greater than or equal to preset charge voltage.Wherein, it is preset if the voltage that first voltage signal is characterized is greater than or equal to
Charging voltage, test station PLC module 206 then can send corresponding on-off model to pulse distribution device 103, so that arteries and veins
Corresponding pulse drive signal can be exported by rushing distributor 103, and tested current transformer is driven by the pulse drive signal
Corresponding IGBT operation in module 105.
In the present embodiment, self-operated measuring unit 104 is preferably further include: major loop switching module 209, inductive load module
210, current detection module 211, second voltage detection circuit 212 and safe-discharge module 213.Wherein, major loop switches mould
Block 209 includes the first switch unit and the second switch unit.Each output end of first switch unit and tested converter module
Mouth is correspondingly connected with, and the second switch unit is connect with capacitance charging module.Inductive load module 210 be connected to the first switch unit with
Between second switch unit, the first switch unit and the second switch unit can be ordinatedly by the fingers of tested converter module 105
Galvanic circle between set output terminal mouth and the positive or negative pole of capacitance charging module 207 is connected.
Current detection circuit 211 is connect with inductive load module 210, is used for detection and is flowed through inductive load module 210
Electric current obtains sensed current signal.Each output port of second voltage detection circuit 212 and tested converter module 105 connects
It connects, is used to detect between each output port of tested converter module 105 and the positive or negative pole of capacitance charging module 207
Voltage, and obtain corresponding detectable voltage signals.
Fig. 4 shows the concrete structure schematic diagram of self-operated measuring unit in the present embodiment.
As shown in figure 4, being tested converter module 105 includes IGBT V1~V10, capacitance charging module in the present embodiment
207 include capacitor C1, and the positive electrode and negative electrode of capacitor C1 are negative with the input anode of tested converter module 105 and input terminal respectively
Pole connection, meanwhile, the anode of capacitor C1 is connected by the anode of a controllable switch KM0 and high-voltage DC power supply.
Corresponding with the quantity of the output port of tested converter module, the first switch unit includes five controllable switches
(i.e. the first controllable switch KM1, the second controllable switch KM2, third controllable switch KM3, the 4th controllable switch KM4 and the 5th are controllable
Switch KM5).Wherein, the first end of this five controllable switches is corresponding with five output ports of tested converter module 105 respectively
Connection, the second end of this five controllable switches are then connect with the first end of inductive load module 210.
In the present embodiment, current detection circuit 211 preferably includes high-tension current probe H1, high-tension current probe H1 setting
Between the second switch unit and the second end of inductive load module 210, it can also detect and flow through inductive load mould in this way
The current value of block, to obtain sensed current signal.Specifically, in the present embodiment, the inductance L1 in inductive load module 210 is excellent
Selection of land is controllable impedance, and the adjustable range of controllable impedance L1 is preferably 0~40nH.Certainly, in other implementations of the invention
In example, according to actual needs, inductive load module 210 can also select the controllable impedance of other adjustable extents, and the present invention is unlimited
In this.
As shown in figure 4, it is controllable that the second switch unit preferably includes the 6th controllable switch KM6 and the 7th in the present embodiment
Switch KM7.Wherein, the first end of the 6th controllable switch KM6 and the 7th controllable switch KM7 is connect with current detection circuit 211,
The second end of 6th controllable switch KM6 and the 7th controllable switch KM7 is connect with the anode and cathode of capacitance charging module respectively.
Safe-discharge module 213 preferably includes the 8th controllable switch KM8, the 9th controllable switch KM9 and the first electric discharge
Resistance R1 and the second discharge resistance R2.Wherein, the 8th controllable switch KM8 connects the of the circuit to be formed with the first discharge resistance R1
The anode of one end and capacitance charging module connects, and the cathode of second end and capacitance charging module connects.Similarly, it the 9th controllably opens
Close that KM9 and the second discharge resistance R2 connect the first end for the circuit to be formed and the anode of capacitance charging module is connect, second end and
The cathode of capacitance charging module connects.
Second voltage detection circuit 212 is connect with each output port of tested converter module 105, is used to detect quilt
The voltage between each output port of converter module 105 and the positive or negative pole of capacitance charging module 207 is surveyed, to obtain
Corresponding detectable voltage signals.
Specifically, as shown in figure 4, in the present embodiment, second voltage detection circuit 212 preferably includes third switch unit
With the 4th switch unit.It is similar with the first switch unit, it is corresponding with the quantity of the output port of tested converter module,
Third switch unit equally includes five controllable switches (i.e. the tenth controllable switch KM10, the 11st controllable switch KM11, the 12nd
Controllable switch KM12, the 13rd controllable switch KM13 and the 14th controllable switch KM14).Wherein, the of this five controllable switches
One end is correspondingly connected with five output ports of tested converter module 105 respectively, and the second end of this five controllable switches connects altogether
And it is connect with the first High Pressure Difference sorting measuring point T2_1.
In the present embodiment, the 4th switch unit preferably includes the 15th controllable switch KM15 and the 16th controllable switch
KM16.Wherein, the first end of the 15th controllable switch KM15 and the 16th controllable switch KM16 connect altogether and with the second high pressure difference
The second end of test point T2_2 connection, the 15th controllable switch KM15 and the 16th controllable switch KM16 respectively with capacitor charging mould
The anode of block 207 is connected with cathode.
In the present embodiment, to ensure the safety in test process, the 9th controllable switch KM9 in safe-discharge module is normal
Close, the tenth controllable switch KM10 be it is normally opened, when system exception power down, the 9th controllable switch KM9 also can effectively will be by test specimen in this way
End remaining capacity is released.
In order to clearly illustrate converter module provided by the present embodiment test macro working principle and
The course of work is further described the system below in conjunction with the work flow diagram of the test macro shown in fig. 5.
As shown in figure 5, before the test begins, which will execute just each control unit and submodule in step S501
Beginningization.The opc server of automatic production line can periodically inquire the production of the converter module in MES massaging device in step S502
Order information, when inquiring converter module production order information from MES massaging device, producing line opc server can be automatic
The order information is downloaded on server, and in step S503 by the order information it is current product type processed (i.e.
In current transformer information processed) it is downloaded in the main PLC of producing line.
The main PLC of producing line can will be sent to testing control module, such testing and control in product type processed in step S504
Module foundation currently will configure corresponding test program sequence in product type processed in step S505, and complete current each
The resource distribution of submodule.
The main PLC module of producing line can pass through in step S506 producing line end data acquisition device (such as RFID information acquisition mould
Block) it reads whether product tray processed enters station.Wherein, when the main PLC of producing line is read by RFID information acquisition module
When converter module pallet processed enters test station, the wiring indicator light on station will be lighted automatically, to remind operation
Member's connecting test harness, while failure is allowed enabling patching operations by safe door electromagnetic lock, meanwhile, USB6525 number I/O is by work
Position " RUN " Status Flag is sent to the main PLC module of producing line.Pallet can be entered a signal in step s 507 by the main PLC module of producing line
It is transmitted to testing control module.
In step S508, system judges whether test specimen (i.e. tested converter module) completes wiring.Work as wiring
After, harness Signal Fail in place, operator's closed safe door, while starting beginning testing button, test macro will start
Auto test flow.Testing control module will control program-controlled direct current according to test program sequencer program in step S509 at this time
Power supply gives tested converter module to power on, while starting first voltage detection circuit to monitor the voltage at charging capacitor both ends.This
In embodiment, first voltage detection circuit preferably uses 34460A multimeter to realize, certainly, in other implementations of the invention
In example, first voltage detection circuit can also realize that the invention is not limited thereto using other reasonable devices or circuit.
System can in step S510 according to first voltage detection circuit transmit come voltage signal judge that capacitor fills
Whether piezoelectric voltage (i.e. the voltages at capacitor charging circuit both ends) reaches preset charge voltage.Wherein, when capacitor charging voltage reaches
When preset charge voltage, pulse distribution device output phase can answer phase sequence upper tube IGBT or down tube IGBT pulse to drive in step S511
Dynamic signal, and phase sequence route handoff will be tested to major loop and detection test loop in step S512.That is, system can be in step
Synchronization routing closure inductive load loop high-voltage contactor (controllable switch i.e. in major loop route handoff module) in rapid S512
With detection test loop high voltage connector (controllable switch i.e. in second voltage measure loop).
At this point, the high pressure differential probe of TDS3012C dual channel oscilloscope respectively with the first High Pressure Difference sorting measuring point T2_1 and
Second High Pressure Difference sorting measuring point T2_2 connection, can be by high pressure differential probe come the test acquisition detection survey in step S513
The voltage waveform in circuit is tried, meanwhile, measurement is adopted the current waveform in test acquisition inductive load circuit by high-tension current probe
The Wave data collected is preset acceptable criterion with program and is compared, and comparison result is recorded.After measurement acquisition, the system meeting
Safe-discharge module closure is come into star t-up discharge circuit in step S514, thus using safe-discharge module come in absorption circuit
Remaining capacity, and start the execution of next round cycle tests.
The system can judge whether all cycle tests are finished in step S515, if all cycle tests execute
It finishes, then also meaning that all phase sequence IGBT are completed, the system can pass through testing and control in step S516 at this time
Module closes the output (close by the power supply of test specimen and each submodule) of programme-controlled dc power, and will survey in step S517
Test result is sent to the main PLC module of producing line, and then testing journal sheet's data test report data is uploaded to MES information system.
Meanwhile the system can judge whether completed to take out stitches by test specimen in step S518, if taken out stitches by test specimen completion, that
System can then control test routing subsystem in step S519 and reset.Specifically, after all cycle tests are finished,
Ring-off lamp on station will be lighted automatically, and safe door electromagnetic lock failure allows operation of taking out stitches of opening the door, at this time operator's palpus
Harness signal in place could effectively after the harness of dismounting is playbacked.So when operator's closed safe door, starting start test by
After button, test route system is completed to reset, and will be moved out of test station in step S520 in converter module pallet processed, from
And complete entire testing process.
In the present embodiment, first voltage detection circuit 208 is preferably realized using 34460A multimeter.Testing and control mould
When block control automatic power supply device is powered on to subject converter module, 34460A multimeter can be started simultaneously to monitor capacitor charging
The voltage at module both ends.Second base of a fruit voltage detecting circuit 212 preferably realized using TDS3012C dual channel oscilloscope,
The high pressure differential probe of TDS3012C dual channel oscilloscope visits the voltage waveform of test acquisition detection test loop, high-tension current
The current waveform of test acquisition load circuit will be measured collected Wave data and carried out with the default acceptable criterion of program by head
It compares, records comparison result.
Below in conjunction with A phase testing process schematic diagram shown in fig. 6 come to the specific work process of automatic test module make into
The explanation of one step.
As shown in fig. 6, system can execute test program, test work in step s 601 before test starts by taking phase sequence A as an example
The operations such as position PLC initialization, are then closed controllable switch KM0, and start high voltage direct current in step S603 in step S602
Regulated power supply charges to capacitance charging module.
The system can judge in step s 604 whether capacitor charging voltage reaches preset charge voltage.When 34460A general-purpose
When table monitors that capacitor charging voltage reaches program preset value (i.e. preset charge voltage), test program will be sentenced in step s 605
It is disconnected to need to carry out A phase upper tube IGBT test or down tube GIBT test at this time.Wherein, if carrying out A phase upper tube IGBT test, that
System can export A phase upper tube pulse drive signal, the subsequent system meeting using pulse distribution device in step S606 at this time
Controllable switch KM7 closure is controlled in step S607, high-voltage DC power supply program-controlled in this way will power on for tested converter module.
Meanwhile the system can be also closed in step S608 controllable switch KM1, controllable switch KM7, controllable switch KM10 and
Controllable switch KM16.Controllable switch KM1 and controllable switch KM7 closure enables to the A phase output terminal mouth of tested converter module
Galvanic circle between the cathode of program-controlled high-voltage DC power supply is connected, and also allows for load circuit conducting in this way.And it controllably opens
The closure for closing KM10 enables between the A phase output terminal mouth and the first High Pressure Difference sorting measuring point T2_1 of tested converter module
Electrical connection conducting, and the closure of controllable switch KM16 then enables to the cathode and the second high pressure difference of program-controlled high-voltage DC power supply
Electrical connection conducting between test point T2_2.The system can also be adopted in step S609 using current detection circuit in this way
Collection A phase main circuit current waveform simultaneously acquires A phase detector circuit positive electricity in step S610 using second voltage detection circuit
Corrugating.
Then, which can be closed controllable switch KM8 in step S616, thus star t-up discharge circuit.In discharge loop
In discharge process, which can also judge that capacitor discharge voltage (i.e. the voltages at capacitance charging module both ends) is in step S617
No is 0.If capacitor discharge voltage is 0, then it represents that the system has been completed to discharge, and is also meant that in this way to A phase upper tube IGBT
The end of test process.
Similarly, if the system is judged to need to test A phase down tube IGBT at this time in step s 605,
System can export A phase down tube pulse drive signal using pulse distribution device in step s 611 at this time, and the subsequent system can be
Controllable switch KM0 closure is controlled in step S612, high-voltage DC power supply program-controlled in this way will power on for tested converter module.
Meanwhile the system can be also closed in step S613 controllable switch KM1, controllable switch KM6, controllable switch KM10 and
Controllable switch KM15.Controllable switch KM1 and controllable switch KM6 closure enables to the A phase output terminal mouth of tested converter module
Galvanic circle between the anode of program-controlled high-voltage DC power supply is connected, and also allows for load circuit conducting in this way.And it controllably opens
The closure for closing KM10 enables between the A phase output terminal mouth and the first High Pressure Difference sorting measuring point T2_1 of tested converter module
Electrical connection conducting, the closure of controllable switch KM15 then enable to the anode and the second High Pressure Difference sorting of program-controlled high-voltage DC power supply
Electrical connection conducting between measuring point T2_2.The system can also be acquired in step S614 using current detection circuit in this way
A phase main circuit current waveform simultaneously acquires the positive phase voltage of A phase detector circuit in step S615 using second voltage detection circuit
Waveform.
Then, which can be closed controllable switch KM8 in step S616, thus star t-up discharge circuit.In discharge loop
In discharge process, which can also judge that capacitor discharge voltage (i.e. the voltages at capacitance charging module both ends) is in step S617
No is 0.If capacitor discharge voltage is 0, then it represents that the system has been completed to discharge, and is also meant that in this way to A phase down tube IGBT
The end of test process.
In the prior art for the test intelligence of converter module by the way of manually testing, this mode is tested
One converter module usually requires half an hour or more, and testing efficiency is extremely low.In the test of large batch of production,
The problem of inefficiency present in the mode of this manual testing, is more prominent, seriously hinders the delivery process of product.
However converter module test macro provided by the present invention can greatly improve the testing efficiency of converter module.
The time of one converter module of system testing usually can be less than or equal to 5 minutes, so as to effectively meet automation
The requirement of production line pitch time.
Meanwhile test macro provided by the present invention can be realized test equipment merged with automatic production line and MES letter
System interaction is ceased, the main PLC of producing line can monitor test equipment working condition in real time, and test result report is incited somebody to action on automatic
Reach MES information system.
IGBT driving pulse required for existing measuring technology needs manually to control, and pulse characteristic can not weigh
It sets, be easy to cause maloperation.However test macro provided by the present invention does not need in the test process to converter module
Manually intervened, the major loop route handoff module and measurement route handoff module energy Auto-matching test path of system are completed
Automatic measurement and data acquisition.Meanwhile the pulse distribution device in system can be according to the converter module of different type, series
The output of characteristic Auto-matching IGBT driving pulse.
In addition, the switch KM8 in system provided by the present invention in safe-discharge module is normally off, KM9 is normally opened
State.When system exception power down, switch KM8 remains to effectively be released by test specimen remaining capacity, to fully ensure that peace
The validity discharged entirely.Meanwhile system is completely isolated by test specimen and control equipment power supply, to prevent because different by test specimen
The test equipment secondary damage often resulted in.In addition, executed in logic in safety, it is various in system to power off, powered on interlocking function
Can, to fully ensure that the safety of operation.The test parameter covering of test macro provided by the present invention is wide, preferably can be simultaneous
Hold maximum input voltage DC4000V, the complete set converter module of power maximum 1200KW.
It should be understood that disclosed embodiment of this invention is not limited to specific structure disclosed herein or processing step
Suddenly, the equivalent substitute for these features that those of ordinary skill in the related art are understood should be extended to.It should also be understood that
It is that term as used herein is used only for the purpose of describing specific embodiments, and is not intended to limit.
" one embodiment " or " embodiment " mentioned in specification means the special characteristic described in conjunction with the embodiments, structure
Or characteristic is included at least one embodiment of the present invention.Therefore, the phrase " reality that specification various places throughout occurs
Apply example " or " embodiment " the same embodiment might not be referred both to.
Although above-mentioned example is used to illustrate principle of the present invention in one or more application, for the technology of this field
For personnel, without departing from the principles and ideas of the present invention, hence it is evident that can in form, the details of usage and implementation
It is upper that various modifications may be made and does not have to make the creative labor.Therefore, the present invention is defined by the appended claims.
Claims (10)
1. a kind of converter module test macro, which is characterized in that the system comprises:
Power supply unit is used for the electricity consumption device power supply to be tested in converter module and test macro；
Pulse distribution device is connect with the tested converter module, for providing pulsed drive for the tested current transformer
Signal；
Test process control device is connect with the pulse distribution device and power supply unit, for the power supply unit and
Pulse distribution device sends corresponding control signal, so that the power supply unit is to the tested unsteady flow module and test process
The electricity consumption device of control module provides electric energy, and the pulse distribution device is made to generate corresponding pulse drive signal and by institute
It states pulse drive signal and is sent to the tested converter module；
Self-operated measuring unit is connect with the test process control device, for according to the test process control device institute
The control instruction sent carries out corresponding functional test to the tested converter module.
2. the system as claimed in claim 1, which is characterized in that the system also includes producing line opc servers and MES information to fill
It sets, wherein the producing line opc server is configured to the converter module inquired in MES massaging device production order information,
And the converter module production order information is downloaded when inquiring converter module production order information, by the current transformer
It is transmitted to the test process control device in current transformer information processed in module production order information, by the test process
Control device is according to described in the corresponding test program sequence of current transformer information configuration processed.
3. system as claimed in claim 1 or 2, which is characterized in that the system also includes:
Producing line end data acquisition device is connect with the test process control device, is for detecting tested converter module
No into or out test station is correspondingly generated indication signal in place or indication signal of offing normal, and by the instruction in place
Signal or indication signal of offing normal are sent to the test process control device.
4. system as claimed in claim 3, which is characterized in that when receiving indication signal in place and receive test starting
When signal, the test process control device is configured to send corresponding control signal to the power supply unit, described in control
Power supply unit provides electric energy to the tested converter module.
5. system as described in any one of claims 1 to 4, which is characterized in that the pulse distribution device includes:
On-off model conditioning module is connect with the test process control device, is filled for controlling the test process
It sets transmitted next on-off model and carries out isolation conditioning；
First buffer is connect with the on-off model conditioning module；
Pulse drive signal generation module is connect with first buffer, for being believed according to the switching value after isolation conditioning
Number generate and export the pulse drive signal of corresponding channel；
Second buffer is connect with the pulse drive signal generation module；
Signal shaping module is connect with second buffer.
6. such as system according to any one of claims 1 to 5, which is characterized in that the self-operated measuring unit includes:
Capacitance charging module is connected between the power supply unit and tested converter module；
First voltage detection circuit is connect with the capacitance charging module, for measuring the capacitance charging module both ends
Voltage, and the first voltage signal of generation is transmitted to the test process control device.
7. system as claimed in claim 6, which is characterized in that the test process control device is configured to judge described first
Whether the voltage that voltage signal is characterized is greater than or equal to preset charge voltage, if it is, sending out to the pulse distribution device
Corresponding control signal is sent, so that the pulse distribution device generates corresponding pulse drive signal and by the pulsed drive
Signal is transmitted to the tested converter module.
8. system as claimed in claims 6 or 7, which is characterized in that the self-operated measuring unit further include:
Major loop route handoff module comprising the first switch unit and the second switch unit, wherein first switch unit
It is correspondingly connected with each output port of the tested converter module, second switch unit and the capacitance charging module
Connection, first switch unit and the second switch unit are ordinatedly by the appointed output terminal mouth of the tested converter module
Galvanic circle between the positive or negative pole of the capacitance charging module is connected；
Inductive load module is connected between first switch unit and the second switch unit；
Current detection circuit is connect with the inductive load module, for measuring the electric current for flowing through the inductive load module,
Obtain sensed current signal；
Second voltage detection circuit is connect, for detecting the quilt with each output port of the tested converter module
The voltage between the appointed output terminal mouth of converter module and the positive or negative pole of the capacitance charging module is surveyed, detection electricity is obtained
Press signal.
9. system as claimed in claim 8, which is characterized in that the tested converter module includes the identical bridge of multiple structures
Arm, each bridge arm include upper tube IGBT and down tube IGBT, wherein
When testing the upper tube IGBT in a bridge arm, first switch unit and the second switch unit are in the test
Under the control of process control equipment by correspond to tested upper tube IGBT output port and the capacitance charging module cathode it
Between galvanic circle conducting, meanwhile, the second voltage detection circuit is configured to the output that detection corresponds to tested upper tube IGBT
Voltage between port and the cathode of the capacitance charging module；
When testing the down tube IGBT in a bridge arm, first switch unit and the second switch unit are in the test
The anode of the output port and the capacitance charging module of tested down tube IGBT will be corresponded under the control of process control equipment
Between galvanic circle conducting, meanwhile, the second voltage detection circuit is configured to the output that detection corresponds to tested upper tube IGBT
Voltage between port and the anode of the capacitance charging module.
10. system as claimed in claim 8 or 9, which is characterized in that the self-operated measuring unit further include:
Safe-discharge module is connected between the positive electrode and negative electrode of the capacitance charging module, for absorbing in galvanic circle
Dump energy.
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| CN201710635801.9A CN109324251B (en) | 2017-07-31 | 2017-07-31 | Converter module test system |
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