CN109298264A - Actual capacitance lifetime estimation method and device - Google Patents
Actual capacitance lifetime estimation method and device Download PDFInfo
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- CN109298264A CN109298264A CN201811231589.0A CN201811231589A CN109298264A CN 109298264 A CN109298264 A CN 109298264A CN 201811231589 A CN201811231589 A CN 201811231589A CN 109298264 A CN109298264 A CN 109298264A
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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
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Abstract
The present invention provides a kind of actual capacitance lifetime estimation method and devices, are related to energy storage power inverter field.The actual capacitance lifetime estimation method and device by according to energy storage power inverter the running state parameter of different operating condition periods and the testing capacitance inquired according to the capacitance operation parameter query table in pre-stored influences capacitor service life the different operating condition periods the capacitance operation parameter that influences the capacitor service life；Then according to the capacitor life appraisal actual capacitance service life under the capacitance operation parameter, the duration of different operating condition periods or the frequency and pre-stored declared working condition for influencing the capacitor service life, to during energy storage power inverter actual motion, without the mounting temperature sensor in bus capacitor, it is used directly for the life appraisal of mass production product, and by the life appraisal result being calculated thus according to testing capacitance in the different operating condition periods, therefore, life appraisal result is also very accurate.
Description
Technical field
The present invention relates to energy storage power inverter field, in particular to a kind of actual capacitance lifetime estimation method with
Device.
Background technique
Energy storage technology (referring mainly to electrochemical energy storage) also presents powerful along with the quick of new energy field, broad development
Developing state.Related energy storaging product, as energy storage power conversion system (Power Conversion System) product connects electricity
Net, battery (or photovoltaic battery panel) realize the functions such as energetic interaction, transmitting, become the widely applied success case of energy storage technology
Example.Bus capacitor in PCS product is the key that realize energetic interaction one between battery~power grid as one of core component
Ring.Either power grid charges to battery or battery discharge, bus capacitor can all undertake voltage ripple, current ripples；Eventually
Show the fever of itself.In addition, the operation work of pcs system internal switch device can also generate heat, so that bus capacitor
Environment temperature increase.Factors above influences the shelf-life of capacitor, and the service life of capacitor largely determines making for PCS
With the service life, it is therefore desirable to carry out assessment and related early warning to the bus capacitor service life.
In traditional technology, mounting temperature sensor (thermistor) inside bus capacitor is needed, extraction wire is connected to
Temperature sensor acquires in real time, while acquiring capacitance voltage value, and life appraisal finally is calculated as a result, due to needing in capacitor
Inside installation sensor, cannot be used directly for mass production product, and the life appraisal being calculated is also inaccurate.
Summary of the invention
In view of this, the embodiment of the present invention is designed to provide a kind of actual capacitance lifetime estimation method and device, with
Improve above-mentioned problem.
In a first aspect, the embodiment of the invention provides a kind of actual capacitance lifetime estimation method, the capacitor life appraisal
Method includes:
Receive storage in the total time of all operating conditions experienced before the current time of running state parameter acquisition module transmission
The running state parameter in the different operating condition periods of energy power inverter；
The running state parameter and pre-stored shadow in the different operating condition periods according to the energy storage power inverter
The capacitance operation parameter query table for ringing the capacitor service life inquires the testing capacitance in the influence capacitor longevity of different operating condition periods
The capacitance operation parameter of life, wherein capacitance operation parameter query table be included in the different operating condition periods running state parameter with
Influence the corresponding relationship of the capacitance operation parameter in capacitor service life；
According to influencing the capacitance operation parameter in capacitor service life, the duration of different operating condition periods and pre-stored specified
The capacitor life appraisal actual capacitance service life under operating condition.
Second aspect, the embodiment of the invention provides a kind of actual capacitance life appraisal device, the capacitor life appraisal
Device includes:
Information receiving unit, it is experienced all before the current time for receiving the transmission of running state parameter acquisition module
The running state parameter in the different operating condition periods of energy storage power inverter in the total time of operating condition；
Information query unit is joined for the operating status in the different operating condition periods according to the energy storage power inverter
The capacitance operation parameter query table in several and pre-stored influence capacitor service life inquires the testing capacitance in different operating conditions
Between section influence the capacitor service life capacitance operation parameter, wherein capacitance operation parameter query table be included in the different operating condition periods
Running state parameter and influence the capacitor service life capacitance operation parameter corresponding relationship；
Actual capacitance life appraisal unit, when for according to the capacitance operation parameter for influencing the capacitor service life, different operating condition
Between section duration and the capacitor life appraisal actual capacitance service life under pre-stored declared working condition.
Compared with prior art, actual capacitance lifetime estimation method and device provided by the invention, by according to the storage
The running state parameter and the capacitor in pre-stored influence capacitor service life in the different operating condition periods of energy power inverter are transported
Row parameter query table inquires the testing capacitance in the capacitance operation parameter in the influence capacitor service life of different operating condition periods；So
Afterwards according to the capacitance operation parameter, the duration of different operating condition periods or the frequency that influence the capacitor service life and pre-stored specified
The capacitor life appraisal actual capacitance service life under operating condition, to be not necessarily to during energy storage power inverter actual motion
Mounting temperature sensor in bus capacitor is used directly for the life appraisal of mass production product, and by thus according to be measured
The life appraisal that capacitor was calculated in the different operating condition periods is as a result, therefore life appraisal result is also very accurate.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment is cited below particularly, and cooperate
Appended attached drawing, is described in detail below.
Detailed description of the invention
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.Therefore, below to the reality of the invention provided in the accompanying drawings
The detailed description for applying example is not intended to limit the range of claimed invention, but is merely representative of selected implementation of the invention
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
Every other embodiment, shall fall within the protection scope of the present invention.
Fig. 1 is the flow chart of actual capacitance lifetime estimation method provided in an embodiment of the present invention；
Fig. 2 is the circuit connection block diagram of actual capacitance service life evaluation system provided in an embodiment of the present invention；
Fig. 3 is the functional block diagram of actual capacitance life appraisal device provided in an embodiment of the present invention.
Icon: 101- running state parameter acquisition module；102- current acquisition module；103- temperature sensor；104-
MCU；105- display module；301- information receiving unit；302- information query unit；303- actual capacitance life appraisal unit；
304- information recording unit；305- Drawing of Curve unit；306- information transmitting unit.
Specific embodiment
Below in conjunction with attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Usually exist
The component of the embodiment of the present invention described and illustrated in attached drawing can be arranged and be designed with a variety of different configurations herein.Cause
This, is not intended to limit claimed invention to the detailed description of the embodiment of the present invention provided in the accompanying drawings below
Range, but it is merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
Referring to Fig. 1, being applied to micro-control unit the embodiment of the invention provides a kind of actual capacitance lifetime estimation method
(Microcontroller Unit；MCU).Wherein, MCU104 is applied to actual capacitance service life evaluation system.As shown in Fig. 2, should
Actual capacitance service life evaluation system includes MCU104, running state parameter acquisition module 101, display module 105, MCU104 difference
It is electrically connected with running state parameter acquisition module 101, display module 105.The capacitor lifetime estimation method includes:
Step S101: all operating conditions experienced before the current time that running state parameter acquisition module 101 transmits are received
Total time in energy storage power inverter the running state parameter in the different operating condition periods.
In the present embodiment, the running state parameter acquisition module 101 includes but is not limited to current acquisition module 102, temperature
Spend sensor 103, for example, it is also possible to include voltage acquisition module, current acquisition module 102, temperature sensor 103 respectively with
MCU104 electrical connection, current acquisition module 102 are used to acquire electric current when pcs system work, and temperature sensor 103 is for acquiring
Environment temperature when testing capacitance works.
Step S101 can be specially experienced all before receiving the current time that the current acquisition module 102 is transmitted
Running current of the circuit locating for testing capacitance in the total time of operating condition in energy storage power inverter in the different operating condition periods；With
And received before the current time that temperature sensor 103 transmits that energy storage power inverter exists in the total time of all operating conditions experienced
The different operating condition periods are the ambient temperature that testing capacitance provides.
Step S102: according to the energy storage power inverter in the running state parameter of different operating condition periods and pre-
The capacitance operation parameter query table in the influence capacitor service life of storage inquires the testing capacitance in the shadow of different operating condition periods
Ring the capacitance operation parameter in capacitor service life, wherein capacitance operation parameter query table is included in the operation shape of different operating condition periods
The corresponding relationship of state parameter and the capacitance operation parameter in influence capacitor service life.
Wherein, in the capacitance operation parameter of the running state parameter of different operating condition periods and influence capacitor service life.This reality
It applies in example, can research and develop the experimental stage, mounting temperature sensor 103 inside bus capacitor, electric current is installed outside capacitor
Sensor, voltage sensor acquire under different operating conditions (such as full-loading condition of energy storage power inverter, semi-load operating condition, underloading respectively
Operating condition, overload conditions) the corresponding influence capacitor service life capacitance operation parameter, above- mentioned information are enumerated into capacitance operation parameter
Inquiry table.The capacitance operation parameter query table is stored in MCU104 by software code.
Step S103: according to capacitance operation parameter, the duration or the frequency of different operating condition periods for influencing the capacitor service life
And the capacitor life appraisal actual capacitance service life under pre-stored declared working condition.
Specifically, step S103 can be specially
According to formulaCalculate the actual capacitance service life, wherein
LgFor actual capacitance service life, L0For the capacitor service life under declared working condition, λ1、λ2、λ3、.......λNFor the different operating condition periods
Duration and the frequency number of the appearance of the ratio of the total time of all operating conditions of experience or different operating condition periods and experience
All operating condition periods appearance frequency number ratio, k1、k2、k3、kNFor different operating condition period corresponding shadows
Ring the capacitance operation parameter in capacitor service life.
Wherein, the capacitance operation parameter for influencing the capacitor service life can be capacitor ripple current, capacitance core temperature, capacitive environment temperature
Any one of degree, operating voltage；Or any two kinds in capacitor ripple current, capacitance core temperature, capacitive environment temperature multiply
Long-pending or summation；Or the product or summation of capacitor ripple current, capacitance core temperature, capacitive environment temperature.In the present embodiment, operating condition can
Think full-loading condition, semi-load operating condition, the light duty, overload conditions of energy storage power inverter, specific operating condition and testing capacitance institute
Locate circuit to be associated in the running current of different operating condition periods.
It should be noted that various operating conditions and every kind of operating condition when actual capacitance service life and energy storage power inverter are run
The time of maintenance or the frequency of appearance are that there are associated.In the present embodiment, the capacitor service life under declared working condition is energy storage power
When converter is in full-loading condition, the capacitor service life being obtained ahead of time, however energy storage power inverter is during actual motion,
It is not to be run to capacitor end-of-life always according to full-loading condition, but in different operating condition periods, energy storage power
The meeting of converter switches over, therefore, the actual capacitance service life and volume in full-loading condition, semi-load operating condition, light duty, overload conditions
The capacitor service life determined under operating condition is different, and needs the total of all operating conditions of the duration and experience according to the different operating condition periods
The appearance of all operating condition periods of the frequency number and experience of the appearance of the ratio of time or different operating condition periods
The ratio of frequency number calculates the actual capacitance service life.
Step S104: the actual capacitance service life at each moment is recorded.
Step S105: the actual capacitance service life according to each moment draws the capacitor life curve in preheating setting time.
Step S106: the capacitor life curve in preheating setting time is transmitted to display module 105.
The actual capacitance service life at each moment is depicted as the capacitor life curve in preheating setting time, so that
Staff is more visually observed that bus capacitor in the actual capacitance service life at each moment.
Referring to Fig. 3, the embodiment of the invention also provides a kind of actual capacitance life appraisal devices, it should be noted that
The technical effect and above-described embodiment phase of actual capacitance life appraisal device provided by the present embodiment, basic principle and generation
Together, to briefly describe, the present embodiment part does not refer to place, can refer to corresponding contents in the above embodiments.The capacitor longevity
Life assessment device includes information receiving unit 301, information query unit 302, actual capacitance life appraisal unit 303, information note
Record unit 304, Drawing of Curve unit 305 and information transmitting unit 306.
It was undergone before the current time that information receiving unit 301 is used to receive the transmission of running state parameter acquisition module 101
All operating conditions total time in energy storage power inverter the running state parameter in the different operating condition periods.
It is to be appreciated that information receiving unit 301 can execute above-mentioned step S301.
Specifically, the running state parameter acquisition module includes current acquisition module, temperature sensor, and the information connects
Unit 301 is received specifically for the total of all operating conditions experienced before the current time of the reception transmission of current acquisition module 102
Running current of the circuit locating for testing capacitance in time in energy storage power inverter in the different operating condition periods；And receive temperature
Before spending the current time that sensor 103 transmits in the total time of all operating conditions experienced energy storage power inverter in different operating conditions
Period is the ambient temperature that testing capacitance provides.
Information query unit 302 is for the operating status in the different operating condition periods according to the energy storage power inverter
The capacitance operation parameter query table in parameter and pre-stored influence capacitor service life inquires the testing capacitance in different operating conditions
The capacitance operation parameter in the influence capacitor service life of period, wherein capacitance operation parameter query table is included in the different operating condition times
The running state parameter of section and the corresponding relationship of the capacitance operation parameter in influence capacitor service life.
It is to be appreciated that information query unit 302 can execute above-mentioned step S302.
Actual capacitance life appraisal unit 303 is used for according to capacitance operation parameter, the different operating conditions for influencing the capacitor service life
The duration or the frequency of period and the capacitor life appraisal actual capacitance service life under pre-stored declared working condition.
It is to be appreciated that actual capacitance life appraisal unit 303 can execute above-mentioned step S303.
The actual capacitance life appraisal unit 303 is specifically used for according to formulaCalculate the actual capacitance service life, wherein LgFor the actual capacitance longevity
Life, L0For the capacitor service life under declared working condition, λ1、λ2、λ3、.......λNFor the duration and experience of different operating condition periods
When all operating conditions of the frequency number of the appearance of the ratio of the total time of all operating conditions or different operating condition periods and experience
Between section appearance frequency number ratio, k1、k2、k3、kNFor the corresponding electricity for influencing the capacitor service life of different operating condition periods
Hold operating parameter.Wherein, the capacitance operation parameter for influencing the capacitor service life is capacitor ripple current, capacitance core temperature, capacitor ring
Any one of border temperature and capacitor operating voltage；Or appointing in capacitor ripple current, capacitance core temperature, capacitive environment temperature
The product or summation of two kinds of meaning；Or the product or summation of capacitor ripple current, capacitance core temperature, capacitive environment temperature.
Information recording unit 304 is used to record the actual capacitance service life at each moment.
It is to be appreciated that information recording unit 304 can execute above-mentioned step S304.
Drawing of Curve unit 305 is used to draw the capacitor longevity in preheating setting time according to the actual capacitance service life at each moment
Order curve.
It is to be appreciated that Drawing of Curve unit 305 can execute above-mentioned step S305.
Information transmitting unit 306 is used to the capacitor life curve in preheating setting time being transmitted to display module 105.
It is to be appreciated that information transmitting unit 306 can execute above-mentioned step S306.
In conclusion actual capacitance lifetime estimation method provided by the invention and device, by according to the energy storage power
The running state parameter and the capacitance operation parameter in pre-stored influence capacitor service life in the different operating condition periods of converter
Inquiry table inquires the testing capacitance in the capacitance operation parameter in the influence capacitor service life of different operating condition periods；Then foundation
Under the capacitance operation parameter, the duration of different operating condition periods or the frequency and pre-stored declared working condition that influence the capacitor service life
The capacitor life appraisal actual capacitance service life, thus during energy storage power inverter actual motion, without in bus electricity
Mounting temperature sensor in holding, is used directly for the life appraisal of mass production product, and by existing thus according to testing capacitance
The life appraisal that the different operating condition periods are calculated is as a result, therefore life appraisal result is also very accurate.
In several embodiments provided herein, it should be understood that disclosed device and method can also pass through
Other modes are realized.The apparatus embodiments described above are merely exemplary, for example, flow chart and block diagram in attached drawing
Show the device of multiple embodiments according to the present invention, the architectural framework in the cards of method and computer program product,
Function and operation.In this regard, each box in flowchart or block diagram can represent the one of a module, section or code
Part, a part of the module, section or code, which includes that one or more is for implementing the specified logical function, to be held
Row instruction.It should also be noted that function marked in the box can also be to be different from some implementations as replacement
The sequence marked in attached drawing occurs.For example, two continuous boxes can be basically executed in parallel in real time, they are sometimes
It can execute in the opposite order, this depends on the function involved.It is also noted that every in block diagram and or flow chart
The combination of box in a box and block diagram and or flow chart can use the dedicated base for executing defined function or movement
It realizes, or can realize using a combination of dedicated hardware and computer instructions in the system of hardware.
In addition, each functional module in each embodiment of the present invention can integrate one independent portion of formation together
Point, it is also possible to modules individualism, an independent part can also be integrated to form with two or more modules.
It, can be with if the function is realized and when sold or used as an independent product in the form of software function module
It is stored in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be a
People's computer, server or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention.
And storage medium above-mentioned includes: that USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic or disk.It needs
Illustrate, herein, relational terms such as first and second and the like be used merely to by an entity or operation with
Another entity or operation distinguish, and without necessarily requiring or implying between these entities or operation, there are any this realities
When relationship or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to the packet of nonexcludability
Contain, so that the process, method, article or equipment for including a series of elements not only includes those elements, but also including
Other elements that are not explicitly listed, or further include for elements inherent to such a process, method, article, or device.
In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including the element
Process, method, article or equipment in there is also other identical elements.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.It should also be noted that similar label and letter exist
Similar terms are indicated in following attached drawing, therefore, once being defined in a certain Xiang Yi attached drawing, are then not required in subsequent attached drawing
It is further defined and explained.
Claims (10)
1. a kind of actual capacitance lifetime estimation method, which is characterized in that the capacitor lifetime estimation method includes:
Received before the current time of running state parameter acquisition module transmission energy storage function in the total time of all operating conditions experienced
The running state parameter in the different operating condition periods of rate converter；
The running state parameter and pre-stored influence electricity in the different operating condition periods according to the energy storage power inverter
The capacitance operation parameter query table for holding the service life inquires testing capacitance in the capacitor in the influence capacitor service life of different operating condition periods
Operating parameter, wherein capacitance operation parameter query table is included in the running state parameter of different operating condition periods and influences capacitor
The corresponding relationship of the capacitance operation parameter in service life；
According to capacitance operation parameter, the duration of different operating condition periods or the frequency and pre-stored volume for influencing the capacitor service life
Determine the capacitor life appraisal actual capacitance service life under operating condition.
2. actual capacitance lifetime estimation method according to claim 1, which is characterized in that described according to the influence capacitor service life
Capacitance operation parameter, the capacitor service life under the duration of different operating condition periods or the frequency and pre-stored declared working condition comments
The step of estimating the actual capacitance service life include:
According to formulaCalculate the actual capacitance service life, wherein LgFor
Actual capacitance service life, L0For the capacitor service life under declared working condition, λ1、λ2、λ3、.......λNFor the different operating condition periods when
The institute of length and the ratio of total time of all operating conditions of experience or the frequency number of the appearance of different operating condition periods and experience
The ratio of the frequency number of the appearance of some operating condition periods, k1、k2、k3、kNFor different operating condition period corresponding influence electricity
Hold the capacitance operation parameter in service life.
3. actual capacitance lifetime estimation method according to claim 1, which is characterized in that the electricity for influencing the capacitor service life
Appearance operating parameter is any one of capacitor ripple current, capacitance core temperature, capacitive environment temperature；Or capacitor ripple current, electricity
Hold core temperature, any two kinds of product or summation in capacitive environment temperature；Or capacitor ripple current, capacitance core temperature, capacitor ring
The product or summation of border temperature.
4. actual capacitance lifetime estimation method according to claim 1, which is characterized in that the running state parameter acquisition
Module includes current acquisition module, temperature sensor, before the current time for receiving the transmission of running state parameter acquisition module
The step of the running state parameter in the different operating condition periods of energy storage power inverter in the total time of all operating conditions experienced
Suddenly include:
Received before the current time of current acquisition module transmission that energy storage power becomes in the total time of all operating conditions experienced
Running current of the circuit locating for testing capacitance in parallel operation in the different operating condition periods；And receive working as temperature sensor transmission
Energy storage power inverter in the different operating condition periods is testing capacitance in the total time of all operating conditions experienced before the preceding moment
The ambient temperature of offer.
5. actual capacitance lifetime estimation method according to claim 1, which is characterized in that the actual capacitance life appraisal
Method further include:
Record the actual capacitance service life at each moment；
The actual capacitance service life according to each moment draws the capacitor life curve in preheating setting time.
6. a kind of actual capacitance life appraisal device, which is characterized in that the capacitor life appraisal device includes:
Information receiving unit, all operating conditions experienced before the current time for receiving the transmission of running state parameter acquisition module
Total time in energy storage power inverter the running state parameter in the different operating condition periods；
Information query unit, for the running state parameter in the different operating condition periods according to the energy storage power inverter with
And the capacitance operation parameter query table in pre-stored influence capacitor service life inquires testing capacitance in the shadow of different operating condition periods
Ring the capacitance operation parameter in capacitor service life, wherein capacitance operation parameter query table is included in the operation shape of different operating condition periods
The corresponding relationship of state parameter and the capacitance operation parameter in influence capacitor service life；
Actual capacitance life appraisal unit, for according to the capacitance operation parameter for influencing the capacitor service life, different operating condition periods
Duration or the frequency and pre-stored declared working condition under the capacitor life appraisal actual capacitance service life.
7. actual capacitance life appraisal device according to claim 6, which is characterized in that the actual capacitance life appraisal
Unit is specifically used for according to formulaThe actual capacitance service life is calculated,
Wherein, LgFor actual capacitance service life, L0For the capacitor service life under declared working condition, λ1、λ2、λ3、.......λNWhen for different operating conditions
Between section duration and the frequency number of the appearance of the ratio of the total time of all operating conditions of experience or different operating condition periods with
The ratio of the frequency number of the appearance of all operating condition periods of experience, k1、k2、k3、kNIt is corresponding for the different operating condition periods
Influence the capacitor service life capacitance operation parameter.
8. actual capacitance life appraisal device according to claim 6, which is characterized in that the electricity for influencing the capacitor service life
Appearance operating parameter is any one of capacitor ripple current, capacitance core temperature, capacitive environment temperature；Or capacitor ripple current, electricity
Hold core temperature, any two kinds of product or summation in capacitive environment temperature；Or capacitor ripple current, capacitance core temperature, capacitor ring
The product or summation of border temperature.
9. actual capacitance life appraisal device according to claim 6, which is characterized in that the running state parameter acquisition
Module includes current acquisition module, temperature sensor, and the information receiving unit is specifically used for receiving the current acquisition module
Circuit locating for testing capacitance before the current time of transmission in the total time of all operating conditions experienced in energy storage power inverter
In the running current of different operating condition periods；And it is experienced all before the current time of the reception temperature sensor transmission
Energy storage power inverter is the ambient temperature that testing capacitance provides in the different operating condition periods in the total time of operating condition.
10. actual capacitance life appraisal device according to claim 6, which is characterized in that the running state parameter is adopted
Collecting module includes current acquisition module, temperature sensor, the actual capacitance life appraisal device further include:
Information recording unit, for recording the actual capacitance service life at each moment；
It is bent to draw the capacitor service life in preheating setting time for the actual capacitance service life according to each moment for Drawing of Curve unit
Line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811231589.0A CN109298264A (en) | 2018-10-22 | 2018-10-22 | Actual capacitance lifetime estimation method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811231589.0A CN109298264A (en) | 2018-10-22 | 2018-10-22 | Actual capacitance lifetime estimation method and device |
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| CN109298264A true CN109298264A (en) | 2019-02-01 |
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| CN201811231589.0A Pending CN109298264A (en) | 2018-10-22 | 2018-10-22 | Actual capacitance lifetime estimation method and device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111259316A (en) * | 2020-02-20 | 2020-06-09 | 上海辛格林纳新时达电机有限公司 | Method for calculating residual life of capacitor |
| CN111624430A (en) * | 2020-06-23 | 2020-09-04 | 科华恒盛股份有限公司 | Capacitor life online monitoring method and device and terminal equipment |
| CN112834889A (en) * | 2019-11-22 | 2021-05-25 | 上海三菱电机·上菱空调机电器有限公司 | Service life prediction device and service life prediction method for smoothing capacitor in air conditioner outdoor unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106569066A (en) * | 2016-10-26 | 2017-04-19 | 西安华为技术有限公司 | Method for detecting service life of bus capacitor and apparatus thereof |
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2018
- 2018-10-22 CN CN201811231589.0A patent/CN109298264A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106569066A (en) * | 2016-10-26 | 2017-04-19 | 西安华为技术有限公司 | Method for detecting service life of bus capacitor and apparatus thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112834889A (en) * | 2019-11-22 | 2021-05-25 | 上海三菱电机·上菱空调机电器有限公司 | Service life prediction device and service life prediction method for smoothing capacitor in air conditioner outdoor unit |
| CN111259316A (en) * | 2020-02-20 | 2020-06-09 | 上海辛格林纳新时达电机有限公司 | Method for calculating residual life of capacitor |
| CN111259316B (en) * | 2020-02-20 | 2023-08-15 | 上海辛格林纳新时达电机有限公司 | Method for calculating residual life of capacitor |
| CN111624430A (en) * | 2020-06-23 | 2020-09-04 | 科华恒盛股份有限公司 | Capacitor life online monitoring method and device and terminal equipment |
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