CN108521847A - Power inverter - Google Patents
Power inverter Download PDFInfo
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- CN108521847A CN108521847A CN201680077058.3A CN201680077058A CN108521847A CN 108521847 A CN108521847 A CN 108521847A CN 201680077058 A CN201680077058 A CN 201680077058A CN 108521847 A CN108521847 A CN 108521847A
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- value
- power inverter
- electric current
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- current
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Inverter Devices (AREA)
- Control Of Voltage And Current In General (AREA)
- Power Conversion In General (AREA)
Abstract
It in the case where the system of user and application correspondingly closely selectes power inverter, needs to be acted with test running confirmation, can not easily judge that the power inverter is best or excessively has spacious and comfortable.Power inverter includes the exchange converter section for exporting AC power, the current detecting part of the electric current flowed in detection exchange converter section, the storage part for the electric current action that storage current detecting part detects, judge the judging part of the optimum value of load current value, with the display operation unit for instructing operation and output display, judging part receives rated value decision instruction from display operation unit, it is compared to judge the optimum value of load current value with the various current reference values under defined rated capacity by the electric current action to inputting from storage part, and the setting of the optimum value of load current value output is shown in display operation unit.
Description
Technical field
The present invention relates to the power inverters of driving AC load.
Background technology
As the background technology of the technical field belonging to the present invention, there is Japanese Unexamined Patent Publication 2004-348662 bulletins (patent text
It offers 1).In the bulletin, describe that " when power switch 25 is pressed, CPU11 makes the BIOS preserved in BIOS-ROM18 start to hold
Row system initialization.In the system initial treatment, system structure judegment part 181 obtains various facility informations and carrys out judgement system knot
Structure, thus it is speculated that AC adapters 1.In addition, AC adapters configuration part 182 is corresponding most in order to execute the AC adapters 1 deduced with this
Wholesale constant current control and the register 261 for updating PSC26.On the other hand, PSC26 execution is indicated with the value of the register 261
Maximum rated current corresponding with AC adapters 1 control.Then, at the end of the system initialization, CPU11 will be protected in HDD20
The OS deposited is loaded into be started in system storage 13.”.(reference explanation book extract)
Existing technical literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2004-348662 bulletins
Invention content
The subject that the invention solves
In patent document 1, the structure prediction AC adapters according to the system of electronic equipment are described, are executed with the supposition
AC adapters are the method that the maximum rated current of object controls.It, be in electric power in the power inverter universally used
In conversion equipment using the method for patent document 1 come identifying system in the case of, connect with the power inverter that universally uses
The system connect has relatively big difference because of user.
General power inverter is medium such as system, conveyer and the coiling machine gently loaded for fan and pumping etc.
Purposes in the heavy duty system such as the system and crane of the load of degree and elevator.Therefore, the combination of the system because
User and it is different, load current and motion frequency also have relatively big difference.Therefore, in general power inverter,
To use method shown in patent document 1, thus it is speculated that the system of connection detects the maximum rated current needed for power inverter
When, because system is different due to user, become very more there are the combination of purposes and load current, motion frequency,
Speculate very difficult project.
In addition, in patent document 1, the load current for the AC adapters being connect with personal computer can be speculated in advance.Separately
On the one hand, in power inverter, system that the size of the electric current of flowing and increase and decrease frequency are connected by user and set by user
The action of power inverter and it is different.Therefore, in the case that user selectes power inverter, if using for user's structure
The system built has larger spacious and comfortable power inverter, then there is no problem on action state, but to expend very big
Cost.On the other hand, it if the system built with user correspondingly meticulously selectes power inverter, needs to use test run
Turn to confirm action state etc., existing can not easily judge that the power inverter is best or excessive.
A technical solution to solve project
In order to solve the above problems, power inverter of the invention is characterized in that, including：Export the exchange of AC power
Converter section；The circuit current test section flowed in detection exchange converter section；The electric current action that storage current detecting part detects
Storage part；Judge the judging part of the optimum value of load current value；With the display operation unit for instructing operation and output display, sentence
Disconnected portion receives rated value decision instruction from display operation unit, by being acted and defined specified appearance to the electric current inputted from storage part
Various current reference values under amount are compared to judge the optimum value of load current value, and by the optimum value of the load current value
Setting output be shown in display operation unit.
Invention effect
In accordance with the invention it is possible to provide a kind of best electrical power conversion dress for the system that automatic decision is suitble to constructed by user
Set and its rated value setting mechanism.
Project, structure and effect other than the above will be illustrated by the explanation of following implementation.
Description of the drawings
Fig. 1 is the figure of an example of the structure for the power inverter for indicating the embodiment of the present invention 1.
Fig. 2 is the flow for indicating the judgement flow of best judging part 112 possessed by the power inverter of embodiment 1
Figure.
Fig. 3 is indicated in embodiment 1, the figure based on the example that the electric current that the acquirement command detection set automatically goes out acts.
Fig. 4 is indicated in embodiment 1, be applicable in the different multiple power inverters of motor rated capacity with it is multiple specified
The table of the relationship of electric current and multiple protective currents.
Fig. 5 is the display operation unit 115 of embodiment 1 just in the situation of dispaly state.
Fig. 6 is indicated in embodiment 2, the figure based on the example that the electric current that the acquirement command detection set automatically goes out acts.
Fig. 7 is indicated in embodiment 3, the figure based on the example that the electric current that the acquirement command detection set automatically goes out acts.
Fig. 8 is the table of the rated current for the power inverter for indicating embodiment 3 and the benchmark example of cycle.
Fig. 9 is indicated in embodiment 4, be applicable in the different multiple power inverters of motor rated capacity with it is multiple specified
The table of the relationship of electric current and multiple protective currents.
Figure 10 is the figure of an example of the structure for the power inverter for indicating the embodiment of the present invention 5.
Figure 11 is the flow for indicating the judgement flow of best judging part 112 possessed by the power inverter of embodiment 5
Figure.
Figure 12 is indicated in embodiment 5, the figure based on the example that the temperature that the acquirement command detection set automatically goes out acts.
Figure 13 is the table of the operating temperature for the power inverter for indicating embodiment 5 and the benchmark example of cycle.
Specific implementation mode
As embodiments of the present invention, illustrate Examples 1 to 5 following with attached drawing.
In each embodiment below, illustrate the electric power of the AC loads such as the ac motor being connect with custom system in driving
In the test running of conversion equipment, by the action for setting the case where determining best power inverter and its rated value automatically
Example.
Embodiment 1
Fig. 1 is the structure for the power inverter for indicating the embodiment of the present invention 1 and is connect with the power inverter
The figure of an example for the ac motor that custom system uses.
The present invention power inverter have three-phase alternating-current supply 101, direct current converter section 102, smoothing capacity device 103,
Exchange converter section 104, current detector 106, control unit 111, best judging part 112, storage part 113,114 and of current detecting part
Display operation unit 115.Moreover, being operated with the power inverter driving ac motor 105 of the present invention.
Three-phase alternating-current supply 101 is, for example, the three-phase alternating voltage come from Utilities Electric Co.'s supply or comes from generator supply
Alternating voltage is the input of direct current converter section 102.
Direct current converter section 102 for example by the DC converting circuit that uses diode or uses the straight of IGBT and fly-wheel diode
Flow the compositions such as conversion circuit.The alternating voltage inputted from three-phase alternating-current supply 101 is converted to DC voltage by direct current converter section 102
And smoothing capacity device 103 is exported.Direct current converter section 12 shown in FIG. 1 is the example for the direct current converter section being made of diode.
Smoothing capacity device 103 makes the DC voltage inputted from direct current converter section 102 smooth, defeated to exchange converter section 104
Go out.In addition, in the case that the output of generator is DC voltage, smoothing capacity device 103 can not also be via direct current converter section 102
And directly from generator input direct-current voltage.
Converter section 104 is exchanged for example by using the ac conversion circuit of IGBT and fly-wheel diode to constitute.Use smoothing capacity
DC voltage is correspondingly converted to alternating voltage by the DC voltage of device 103 as input with the output order of control unit 111,
And ac motor 105 is exported.In addition, exchange converter section 104 not via smoothing capacity device 103 by carrying out Communication-Communication
In the case that the AC conversion apparatus of conversion is constituted, the alternating voltage of input can also be converted to the alternating voltage of different frequency
And ac motor 105 is exported.
Current detector 106 is for example made of Hall CT (Hall CT) and/or shunt resistance.Current detector 106 configures
In the outlet side of power inverter, the alternating current flowed in ac motor 105 is detected, as detection current data to electricity
Test section 114 is flowed to export.As long as the configuration of current detector 106 is flowed in it can speculate or directly detect exchange converter section 104
The position of dynamic output current, so that it may to configure in arbitrary position.Fig. 1 is to detect the electric current flowed in ac motor 105
Example.
Control unit 111 is according to from the output order for driving the ordering calculation of ac motor 105 to obtain, using from electricity
The electric current action data for the detection electric current that stream test section 114 is fed back sends out PWM output orders to exchange converter section 104.
Best judging part 112 is judged input information based on the electric current motion detection instruction inputted from display operation unit 115
For the triggering information of electric current motion detection, electric current action is obtained to 113 order of storage part.The electricity indicated by display operation unit 115
The instruction of stream the motion detection e.g. signal instruction of ON/OFF, expression are just in the signal of operating condition, from starting setting
Time is specified etc., judges starting over for electric current motion detection instruction.Herein, in the case of being judged as end, storage part is obtained
The electric current acting characteristic preserved in 113.Best judging part 112 is specified to judge according to the electric current action inputted from storage part 113
The optimum value of value simultaneously exports display operation unit 115.
Storage part 113 is such as the element (RAM) by temporarily storing data, holding storage cutting off the power
EEPROM or data flash memory ROM are constituted, and are regard the instruction etc. from display operation unit 115 as set-point data, will be come from electric current
The electric current action data of test section 114 stores respectively as detection Value Data.Storage part 113 exports electricity to best judging part 112
Flow action data.
The detection current data inputted from current detector 106 is for example converted to the electricity of operation by current detecting part 114
Action data is flowed, and control unit 111 and storage part 113 are exported.
Display operation unit 115 for example shows the smart mobile phone with operation panel and input and output terminal, smartwatch, puts down
The user interfaces such as board terminal or personal computer.Such as the input obtained by the input information of user's operation or from external mechanical
Signal exports best judging part 112.
Fig. 2 is the flow chart for the flow set automatically for indicating that best judging part 112 carries out.
Best judging part 112 with being set in the case that rated value judges automatically, first of all for beginning rated value judgement,
In step 201 (S201), the triggering information for starting to judge of the rated value decision instruction from display operation unit 115 is obtained
(S201)。
In step 202 (S202), best judging part 112 judges whether there is the triggering for starting to judge, is being triggered
In the case of (YES), in step 203 (S203), to storage part 113 send out electric current action obtain instruction.
In step 204 (S204), best judging part 112 inputs the rated value decision instruction from display operation unit 115,
Update the state that electric current action obtains instruction.
In step 205 (S205), best judging part 112 judge updated electric current action obtain instruction state whether
Satisfaction action obtains termination condition (S205), in the case where being unsatisfactory for action and obtaining termination condition (no), return to step 203
(S203), continue to send out electric current action acquirement instruction to storage part 113.In the case that satisfaction action obtains termination condition
(YES), best judging part 112 judge whether normal termination in step 206 (S206).
For example, in the case of the judgement during to be operated 1 recycles, best judging part 112 takes from control unit 111
Operating condition is obtained, so that storage part 113 is obtained electric current action at the time point of operation start, is judged as at the time point that operating stops
Terminate.In addition, in the case that user will be according to the setting acted to judge rated value in one day, carried out by display operation unit 115
Action setting, best judging part 112 use the commencing signal obtained as triggering, 24 hours meters are carried out from inputting commencing signal
Judge to terminate after number.
Best judging part 112 is according to the judgement of the normal termination in step 206 (S206), the case where detecting normal termination
Lower (YES) obtains electric current action in step 207 (S207), then acts judgement volume according to electric current in step 208 (S208)
The optimum value of definite value.Herein, the electric current action of acquirement for example can be the current waveform data under detecting state, or can also
It is to store the permissible level of the electric current setting determined in advance by power inverter and store more with the frequency of which kind of degree
Few time has been more than the data of the permissible level.Then, best judging part 112 in step 209 (S209) to display operation unit
The optimum value of 115 notice rated values.
On the other hand, in the case that best judging part 112 detects abnormal ending in step 206 (S206) (no),
Electric current action is obtained in step 210 (S210), mistake caused by being acted if it is electric current is then judged as the electricity there are current action
It is different to be then judged as that there are systems if it is mistake caused by other reasons for the insufficient possibility of rated capacity of power conversion device
Often, the judging result (S211) is notified to display operation unit 115 in step 211 (S211).
Fig. 3 is the figure of the example for the electric current action for indicating to go out based on the acquirement command detection set automatically in embodiment 1.
In Fig. 4, shows in (1) and turn according to the different multiple electric power of the rated capacity for being applicable in the decision of ac motor capacity
The example of changing device, and the relationship of multiple rated current and multiple protective currents is shown in (2).In addition, being tried in embodiment 1
The device used in operating is device 1.In addition, the product of rated capacity rated voltage and rated current is expressed, if voltage is certain
When, rated capacity is in relationship of equal value with rated current.
The shape that the beginning and end (electric current motion detection section) set automatically is judged with output state is shown in Fig. 3
State.Herein, best judging part 112 is acted according to the electric current that detects, detects to determine by each power inverter in advance
Electric current more than various current reference values under rated capacity flows through in how many periods.Then, rated capacity and rated current
Each setting synthetically determined such as according to the temperature characterisitic of the hardware of exchange converter section 104 by best judging part 112.It is multiple
In power inverter with capacity sequence, the high power inverter price higher of rated current in general.For example, figure
In 4,1 price highest of device, device trivalent lattice are minimum.The characteristic of power inverter single machine is that rated current is higher, more than
It more needing promptly to be protected in the case of use in the state of rated current, the limits values such as temperature in use are lower, relative to
The wrong occurred level of rated current is also lower.Setting for protective current, for example, (1) and (2) such as Fig. 4 relationship institute
Show, 60 seconds can be born under the 110% of rated current in rated value 6-1, in rated value 6-2 in rated current
60 seconds are born under 120%, are born 60 seconds and in rated value 6-4 specified under the 150% of rated current in rated value 6-3
It is born under the 180% of electric current 60 seconds, the mistake until protection element occurs.These electric currents can be relative to the breakage level of element
With spacious and comfortable set.
Best judging part 112 is based on the electric current action measurement time obtained by storage part 113.Best judging part 112 can
To obtain electric current action (in Fig. 2, being obtained in step 204 (S204)) in real time from storage part 113, can also be obtained in electric current
It obtains and (in Fig. 2, is obtained in step 207 (S207)) together after instruction.In the electric current action of Fig. 3, such as show
With 38A perseverations 60 seconds (a-1), with 28A perseverations 100 seconds (b-1) and with 28A perseverations 400 seconds (c-1)
Situation.In addition, best judging part 112 is for example with the current value shown in Fig. 4 determined in advance by the characteristic of power inverter
On the basis of measurement electric current be more than the time, be not necessarily required to obtain whole continuous current value judged.
Herein, best judging part 112 is based on various current reference values, can be judged as example to be acted in 30A or less
60 seconds or more, load current value was needed more than 28A.It has been more than the volume of 28A that is, in the table about rated current of (1) Fig. 4
The device of constant current value and rated value are combined into candidate.It is volume in device 1 that is, as the candidate from load current value
Definite value 6-1,6-2 and 6-3 are rated value 6-1 and 6-2 in device 2, are rated value 6-1 in device 3.
In addition, best judging part 112 can judge to be acted 60 seconds with 38A in electric current action shown in Fig. 3, protection
Current value needs to select more than 38A's.It has been more than the protective current value of 38A that is, in the table about protective current of Fig. 4 (2)
Device and rated value are combined into candidate.That is, being rated value 6-1,6-2 as the candidate from protective current value, in device 1
And 6-3, it is rated value 6-1 in device 2.
Then, best judging part 112 from the candidate for meeting both load current value and protective current value selection device and
Rated value.For example, in embodiment 1, the rated value 6-1 of the lower device of compared with device 1 price 2 can be selected, so judging
It is best for the rated value 6-1 of device 2.
In addition, best judging part 112 can also judge each power inverter the optimum value of rated value, using
In the case of device 1, because of temperature in use limitation height, have to generation mistake spacious and comfortable, it is possible to device 1 during judgement is candidate
Rated value 6-3 is best so that user selects best setting from multiple candidates.
In turn, best judging part 112 in embodiment 1, in the device 1 for having selected to have carried out the judgement of automatic setting itself
Best rated value setting in the case of, can be as the setting of optimum setting value automatically change device 1.
Fig. 5 is to indicate that display operation unit 115 receives the notice of optimum value from best judging part 112 and shows the shape of its state
The figure of condition.Display operation unit 115 is in the case where user has selected the optimum value of display, if it is the setting of itself of device 1,
The setting that power inverter then can be for example changed without display and automatically, can also export " whether application settings”
Etc. message as show content, automatically set in power inverter in the case where user agrees to.In addition, display
Operation portion 115 is in best device and test running in the case of difference, although such as being tried with device 1 in embodiment 1
In the case that operating but user specify device 2, it can export and " need to be replaced into device 2." etc. message as show content,
Prompt the necessity of change device.
As described above, best power inverter and its rated value setting can be determined.
Embodiment 2
The present embodiment is the variation of embodiment 1 because the structure of embodiment 2 with it is stated that shown in FIG. 1 attached
The structure function having the same of the same symbol, so the description thereof will be omitted.
In embodiment 2, it is assumed that the custom system being connect with ac motor 105 loads heavier than embodiment 1.
Fig. 6 is indicated in embodiment 2, the figure based on the example that the electric current that the acquirement command detection set automatically goes out acts.
Show that action current increases the shape that (increase) to power inverter is considered abnormal levels of current in Fig. 6
Condition.Similarly to Example 1, flow as shown in Figure 2 starts to judge dynamic best judging part 112 using output state as triggering
Make.For example, in the case that the current error level of current transfer device is 80A, the time point that 80A is reached in action current occurs
Mistake, more new state (being step 204 (S204) in Fig. 2).Best judging part 112 is judged as abnormal ending when detection makes mistake
(being step 206 (S206) in Fig. 2) obtains electric current action (being step 210 (S210) in Fig. 2).
It is abnormal according to the false judgment based on the electric current action detected, so best judging part 112 in embodiment 2
It is judged as that the rated capacity with power inverter and rated current are lower, display operation unit 115 is notified different
Often, and off-capacity is notified.Display operation unit 115 shows the state of the off-capacity of abnormal ending and power inverter.
As a result, if there is no the exception of system acting, then user can be judged as needing higher capacity.
As described above, even if can sentence if in the case of the power inverter for being fitted without the capacity needed for system
It is disconnected whether rated value to be allowed to set.
Embodiment 3
The present embodiment is also the variation of embodiment 1, the structure of embodiment 3 with it is stated that shown in FIG. 1 attached phase
With the structure function having the same of symbol, so the description thereof will be omitted.
In embodiment 3, in the instruction of electric current motion detection and the judgement of best judging part 112 that display operation unit 115 receives
The case where holding from embodiment 1 is different.In embodiment 3, in order to be judged according to the action of the one of custom system day, turn with electric power
The output of changing device independently, such as time for being specified from user measures 24 hours, is automatically tied after detection electric current action
Beam detects.
Fig. 7 is indicated in embodiment 3, the figure based on the example that the electric current that the acquirement command detection set automatically goes out acts.
Fig. 8 is the table of the benchmark example of the load current value for indicating power inverter and power cycle.Power cycle is for example
Be the recurring number in the service life determined by the thermal stress of IGBT components, be capable of the rise and fall of temperature component-based, according to by
The power cycle tolerance of the offers such as IGBT device manufacturers calculates.In embodiment 3, due to flowing through electric current in assembly in temperature
It rises, temperature declines due to current interruptions, so Fig. 7 is the daily work(schematically shown according to electric current action as the service life
The example of rate recurring number.
In the electric current action of Fig. 7 detected, such as shows and carry out 20 electric currents recycled in action in one day
The situation of the system connection of value 25A operating stablies below.Best judging part 112 is for example turned by electric power with shown in Fig. 8 in advance
It is measured on the basis of load current value and power cycle that the characteristic of changing device determines, is not necessarily required to obtain the continuous of whole
Current value judged.
Best judging part 112 is acted according to the electric current of Fig. 7 detected, judgement can carry out current value 25A and 20 are followed
The device of action more than ring.That is, in the table of Fig. 8, load current value and power cycle have been more than 25A and 20 combination recycled
As candidate.
As the candidate that load current value and cycle all meet, it is rated value 8-2 and 8-3 in device 1, is volume in device 2
Definite value 8-2.In embodiment 3, the rated value 8-2 of the lower device of compared with device 1 price 2 can be selected, so being judged as filling
Set 2 rated value 8-2 it is best.
In addition, best judging part 112 can judge each power inverter the optimum value of rated value.It is adopted in Fig. 8
In the case of with device 1 because temperature in use limitation is high, to occur mistake have it is spacious and comfortable, so judge it is candidate in device 1 volume
Definite value 8-3 is best.Alternatively, user can also be made to select best setting from multiple candidates.
As described above, best power inverter and its rated value setting can be determined.
Embodiment 4
The present embodiment is the variation of embodiment 1, the structure of embodiment 4 with it is stated that it is shown in FIG. 1 attached it is identical
The structure function having the same of symbol, so the description thereof will be omitted.
In embodiment 4, the judgement content of best judging part 112 is different from embodiment 1.Embodiment 4 is suitble to such as user to think
There is the case where selecting power inverter spacious and comfortablely.Specifically, it is contemplated that user wants the selected reference value phase with standard
Than spacious and comfortable the case where setting rated current with 10A.
By display operation unit 115, in the case of 10A is set in power inverter as spacious and comfortable value, implementing
In the judgement of the load current value carried out in example 1, shown in a reference value such as Fig. 9 (1) of best judging part 112 to Fig. 4 (1) all
10A is subtracted to execute judgement.That is, best judging part 112 is in the electric current action of Fig. 3, such as show with 38A perseverations
60 seconds (a-1), with 28A perseverations 100 seconds (b-1), with the situation of 28A perseverations 400 seconds (c-1).
Best judging part 112 can judge that load current value needs are more than for example in order to be acted 60 seconds with 30A or less or more
28A.It has been more than the device of the load current value of 28A and being combined into for rated value that is, in the table about rated current of Fig. 9 (1)
For candidate.It is rated value 9-1 and 9-2 as the candidate from load current value, in device 1, is rated value 9-1 in device 2.
In addition, best judging part 112 can judge that protective current value needs to select more than 38A in order to be acted 60 seconds with 38A
's.It has been more than the device of protective current value and being combined into for rated value of 38A that is, in the table about protective current of Fig. 9 (2)
For candidate.Herein, protective current value carries out operation according to the ratio relative to load current value similarly to Example 1.As
Candidate from protective current value, only rated value 9-1 in device 1, so best judging part 112 be judged as it is specified as meeting
The rated value 9-1 of the candidate device 1 of both current value and protective current value is best.
As described above, the best power inverter and its rated value setting for having spacious and comfortable can be determined.
Embodiment 5
The present embodiment is the variation of embodiment 1, the structure of embodiment 5 with it is stated that it is shown in FIG. 1 attached it is identical
The structure function having the same of symbol, so the description thereof will be omitted.
Figure 10 is the structure for the power inverter for indicating embodiment 5 and the custom system that is connect with the power inverter
The figure of an example of the ac motor used.
Embodiment 1 is conceived to electric current action, and in contrast, embodiment 5 is conceived to temperature action, compared with Example 1, if
It is different with the judgement content of 1014 this point of temperature detecting part and best judging part 112 temperature detector 1001 has been set.
Temperature detector 1001 is, for example, thermistor etc., and detection is configured with 6 IGBT's in exchanging converter section 104
Temperature exports temperature detecting part 1014 detection temperature data.
The detection temperature data inputted from temperature detector 1001 is converted to the temperature of operation by temperature detecting part 1014
Action data, and control unit 111 and storage part 113 are exported.
In addition, the detection Value Data stored in storage part 113, is the temperature action data from temperature detecting part 1014.
Storage part 113 is to 112 output temperature action data of best judging part.
Figure 11 is the flow chart for the flow set automatically for indicating that best judging part 112 carries out.It is identical as Fig. 2 for carrying out
Action the step of, attached identical symbol.
It is illustrated hereinafter, only pair acting different steps from flow chart shown in Fig. 2.
Best judging part 112 is judged as in the case of the triggering for starting to judge has occurred in step 202 (S202)
(YES) sends out temperature action to storage part 113 and obtains instruction in step 1103 (S1103).
In step 206 (S206), best judging part 112 judges the normal termination or abnormal ending that temperature action obtains.
For example, in the case of judgement in be operated 1 cycle, best judging part 112 obtains operating shape from control unit 111
State, makes storage part 113 obtain temperature action at the time point of operation start, judges to terminate at the time point that operating stops.In addition,
Such as in the case that user will judge the setting of rated value according to action in one day, action setting is carried out by display operation unit 115,
Best judging part 112 uses the commencing signal obtained as triggering, judges after counting in 24 hours is carried out from inputting commencing signal
To terminate.
In the case that best judging part 112 detects that temperature action obtains normal termination in step 206 (S206)
(YES) obtains temperature action in step 1107 (S1107), and then in step 208 (S208), judgement volume is acted according to temperature
The optimum value of definite value.Herein, it is acted as the temperature of acquirement, such as can be the temperature Wave data under detecting state, or
Can also be to store the permissible level of the temperature setting determined in advance by power inverter and store with which kind of degree
Frequency how long be more than the permissible level data.
On the other hand, in step 206 (S206), best judging part 112 detects that temperature action obtains abnormal ending
In the case of (no), temperature action is obtained in the step 1110 (S1110), if it is the mistake acted based on temperature, is then judged as
There is a possibility that the rated capacity of the power inverter currently acted is insufficient, if it is wrong caused by other reasons
Accidentally, then it is judged as, there are system exception, the judging result being notified to display operation unit 115 in step 211 (S211).
Figure 12 is indicated in embodiment 5, the figure based on the example that the temperature that the acquirement command detection set automatically goes out acts.
In addition, Figure 13 is the table of the benchmark example of the operating temperature for indicating power inverter and power cycle.
In the temperature action of Figure 12 detected, such as shows and carry out 20 80 DEG C recycled in action in one day
The situation of the system connection of operating stably below.Best judging part 112 by electrical power conversion for example to be filled in advance shown in Figure 13
It is measured on the basis of temperature and power cycle that the characteristic set determines, is not necessarily required to that obtaining whole continuous temperature carries out
Judge.
Best judging part 112 is acted according to the temperature of Figure 12 detected, judgement can be with 80 DEG C and 20 cycles more than
The device acted.That is, in the table of Figure 13, temperature and power cycle recycled at 80 DEG C and 20 more than be combined into time
Choosing.It is rated value 12-1 and 12-2 as the candidate that temperature and power cycle all meet, in device 1, is rated value in device 2
12-1 is rated value 12-1 in device 3.In embodiment 5, the lower device of price 3 can be selected compared with device 1 and device 2
Rated value 12-1, so being judged as that the rated value 12-1 of device 3 is best.
In addition, best judging part 112 can also judge each power inverter best rated value, using device
In the case of 1 because temperature in use limitation is high, to occur mistake have it is spacious and comfortable, so judge it is candidate in device 1 rated value
12-2 is best.Alternatively, user can also be made to select best setting from multiple candidates.
As described above, even if be conceived to temperature action in the case of if can determine best power inverter and
Its rated value is set.
In addition, the present invention is not limited to above-described embodiment, including various modifications example.For example, above-described embodiment is in order to easy
In understand illustrate the present invention and be described in detail, be not limited to the entire infrastructure that must have explanation.In addition, can be by certain
A part for the structure of a embodiment is replaced into the structure of other embodiment, also can add it in the structure of some embodiment
The structure of his embodiment.In addition, a part for the structure for each embodiment, can add, deletes, replace other structures.
In addition, about the processing (function) etc. that above-mentioned best judging part executes, for part of it or whole, such as can be with
Hardware realization bys designing in integrated circuits etc. can also be explained by processor (not shown) and execute realization everywhere
It manages the program of (function) and uses software realization.For information such as its program, table and files, memory, hard disk can be stored in
With SSD (Solid State Drive：Solid state disk) etc. in the recording mediums such as recording devices or IC card, SD card and DVD.
Reference sign
101 ... three-phase alternating-current supplies, 102 ... direct current converter sections, 103 ... smoothing capacity devices, 104 ... exchange converter sections,
105 ... ac motors, 106 ... current detectors, 111 ... control units, 112 ... best judging parts, 113 ... storage parts, 114 ...
Current detecting part, 115 ... display operation units, 1001 ... temperature detectors, 1014 ... temperature detecting parts.
Claims (8)
1. a kind of power inverter, which is characterized in that including：
Export the exchange converter section of AC power；
Detect the current detecting part of the electric current flowed in the exchange converter section；
Store the storage part for the electric current action that the current detecting part detects；
Judge the judging part of the optimum value of load current value；With
Display operation unit for instructing operation and output display,
The judging part receives rated value decision instruction from the display operation unit, by from described in storage part input
Electric current is acted to be compared to judge the optimum value of load current value with the various current reference values under defined rated capacity, and
The setting output of the optimum value of the load current value is shown in the display operation unit.
2. power inverter as described in claim 1, it is characterised in that：
The storage part only carries out the storage of the electric current action in the valid period of the rated value decision instruction,
The electric current action inputted from the storage part is the electricity only stored by the storage part in the valid period
Flowing is made.
3. power inverter as claimed in claim 1 or 2, it is characterised in that：
It has been more than to be determined by the power inverter that the electric current action inputted from the storage part, which is the electric current detected,
The frequency of fixed electric current permissible level and time.
4. power inverter according to any one of claims 1 to 3, it is characterised in that：
The judging part be based on be applicable in load, from set on the power inverter multiple load current values or set on have and this
In multiple load current values of other power inverters of the different load current value of power inverter, selection and the volume
The immediate load current value of optimum value of constant current value.
5. power inverter as claimed in claim 4, it is characterised in that：
The judging part receives the setting of spacious and comfortable current value from the display operation unit, from set on the power inverter or described
In the respective the multiple load current value of other power inverters, institute low with the optimum value than the load current value is selected
State the immediate load current value of value of spacious and comfortable current value.
6. a kind of power inverter, which is characterized in that including：
Export the exchange converter section of AC power；
Detect the current detecting part of the electric current flowed in the exchange converter section；
Store the storage part for the electric current action that the current detecting part detects；
Judge the judging part of the optimum value of load current value；With
Display operation unit for instructing operation and output display,
The judging part receives rated value decision instruction from the display operation unit, passes through the regulation to being inputted from the storage part
Electric current action and the power cycle in the service life for indicating to constitute the semiconductor element component for exchanging converter section of period
Characteristic is compared to judge the combination of the optimum value and the power cycle of load current value, and the setting of the combination is exported
It is shown in the display operation unit.
7. a kind of power inverter, which is characterized in that including：
Export the exchange converter section of AC power；
Detect the temperature detecting part of the temperature generated in the exchange converter section；
Store the storage part for the temperature action that the temperature detecting part detects；
Judge the judging part of the optimum value of load current value；With
Display operation unit for instructing operation and output display,
The judging part receives rated value decision instruction from the display operation unit, passes through the regulation to being inputted from the storage part
Temperature action and the power cycle in the service life for indicating to constitute the semiconductor element component for exchanging converter section of period
Characteristic is compared to judge the combination of the optimum value and the power cycle of load current value, and the setting of the combination is exported
It is shown in the display operation unit.
8. such as power inverter according to any one of claims 1 to 7, it is characterised in that：
The judging part, in the case where detecting the error message of the power inverter, if it is defeated from the storage part
Mistake caused by the electric current action or temperature action that enter then is judged as the rated capacity there are the power inverter
Insufficient possibility, caused mistake is then judged as existing the reason of if it is other than electric current action or temperature action
System exception, and the output of the result of the judgement is shown in the display operation unit.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2016/062334 WO2017183102A1 (en) | 2016-04-19 | 2016-04-19 | Power conversion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108521847A true CN108521847A (en) | 2018-09-11 |
| CN108521847B CN108521847B (en) | 2020-06-30 |
Family
ID=60116662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680077058.3A Expired - Fee Related CN108521847B (en) | 2016-04-19 | 2016-04-19 | Power conversion device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6637165B2 (en) |
| CN (1) | CN108521847B (en) |
| WO (1) | WO2017183102A1 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2017183102A1 (en) | 2019-05-30 |
| WO2017183102A1 (en) | 2017-10-26 |
| CN108521847B (en) | 2020-06-30 |
| JP6637165B2 (en) | 2020-01-29 |
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