CN109143109A - Electric vehicle inverter fault detection and processing method, device and storage medium - Google Patents
Electric vehicle inverter fault detection and processing method, device and storage medium Download PDFInfo
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- CN109143109A CN109143109A CN201710492513.2A CN201710492513A CN109143109A CN 109143109 A CN109143109 A CN 109143109A CN 201710492513 A CN201710492513 A CN 201710492513A CN 109143109 A CN109143109 A CN 109143109A
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- 238000003672 processing method Methods 0.000 title claims description 49
- 238000000034 method Methods 0.000 claims abstract description 15
- 230000004888 barrier function Effects 0.000 claims 2
- 239000013078 crystal Substances 0.000 claims 1
- 238000013024 troubleshooting Methods 0.000 claims 1
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- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
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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
- G01R31/40—Testing power supplies
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Abstract
The invention provides a method and a device for detecting and processing the inverter fault of an electric vehicle and a computer readable storage medium, wherein the method comprises the following steps: when the electric vehicle is in a running state, acquiring signals from at least one sensor on each bridge arm of the three-phase inverter in real time to acquire at least one inverter running state parameter; determining whether the three-phase inverter is in fault and a fault level thereof based on the at least one inverter driving state parameter; if it is determined that the three-phase inverter is out of order, a predetermined fault handling operation is performed according to the determined fault level. The invention discloses a method and a device for detecting and processing the fault of an electric vehicle inverter and a computer readable storage medium, which can accurately detect the fault and locate the fault source.
Description
Technical field
The present invention relates to fault detection and processing methods, device and storage medium, more particularly, to electric vehicle inversion
Device fault detection and processing method, device and storage medium.
Background technique
Currently, increasingly developed and universal with electric vehicle, to the inverter in electric vehicle, (it is electric vehicle
Electric energy converting member between electrical source of power and motor) it carries out fault detection and processing and becomes more and more important.
In existing technical solution, implement to examine the failure of the inverter in electric vehicle typically via such as under type
It surveys and handles: determining whether to break down based on open circuit phenomenon and/or short circuit phenomenon whether occurs in detection inverter circuit,
And implement scheduled fault handling operation therewith.
However, there are the following problems for above-mentioned existing technical solution: due to be only capable of according to whether occur open a way phenomenon and/or
The more fuzzy apparent instruction such as short circuit phenomenon is difficult to accurately detect failure, and cannot be real to confirm the generation of failure
When efficiently locate the source of trouble.
Accordingly, there exist following demands: providing the electric vehicle inverter that can accurately detect failure and positioning failure source
Fault detection and processing method, device and storage medium.
Summary of the invention
In order to solve the problems existing in the prior art scheme, the invention proposes can accurately detect failure simultaneously
The electric vehicle inverter fault detection in positioning failure source and processing method, device and storage medium.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of electric vehicle inverter fault detection and processing method comprising:
(A1) it when electric vehicle is in driving status, is acquired on each bridge arm for being located at three-phase inverter in real time
The signal of at least one sensor is to obtain at least one inverter driving status parameter；
(A2) based at least one described inverter driving status parameter determine the three-phase inverter whether break down and its
Fault level；
(A3) if it is determined that the three-phase inverter breaks down, then implemented at scheduled failure according to identified fault level
Reason operation.
The purpose of the present invention can be also achieved through the following technical solutions:
A kind of electric vehicle inverter fault detection and processing unit, the electric vehicle inverter fault detection and processing unit
Including driving status fault detection unit, the driving status fault detection unit is configured as being in traveling shape when electric vehicle
When in state, acquire in real time from be located at three-phase inverter each bridge arm at least one sensor signal with obtain to
A few inverter driving status parameter determines three contrary based at least one described inverter driving status parameter therewith
Become whether device breaks down and its fault level, and if it is determined that the three-phase inverter breaks down, then according to determining
Fault level implement scheduled fault handling operation.
The purpose of the present invention can be also achieved through the following technical solutions:
It is a kind of for storing the storage medium of computer-readable instruction, the computer-readable instruction can be by one or more
Device is managed to execute to implement mentioned-above electric vehicle inverter fault detection and processing method.
Electric vehicle inverter fault detection disclosed in this invention and processing method, device and storage medium at least have
Following advantages: due to including temperature sensor in every one-phase circuit (i.e. each bridge arm) in the three-phase inverter, therefore energy
It is enough to detect failure more accurately and directly position to the source of trouble.
Detailed description of the invention
In conjunction with attached drawing, technical characteristic of the invention and advantage will be more fully understood by those skilled in the art, in which:
Fig. 1 is the flow chart of the electric vehicle inverter fault detection and processing method of embodiment according to the present invention；
Fig. 2 is electric vehicle inverter fault detection and the schematic diagram of processing unit of embodiment according to the present invention.
Specific embodiment
Fig. 1 is the flow chart of the electric vehicle inverter fault detection and processing method of embodiment according to the present invention.Such as
Shown in Fig. 1, electric vehicle inverter fault detection disclosed in this invention and processing method include: (A1) when electric vehicle is in
When in driving status, acquire in real time from be located at three-phase inverter each bridge arm at least one sensor signal with
Obtain at least one inverter driving status parameter；(A2) described at least one inverter driving status parameter based on described in determines
Whether three-phase inverter breaks down and its fault level；(A3) if it is determined that the three-phase inverter breaks down, then basis
Identified fault level implements scheduled fault handling operation.
Illustratively, in electric vehicle inverter fault detection disclosed in this invention and one embodiment of processing method
In, at least one described inverter driving status parameter includes the current value and electricity of every one-phase circuit in the three-phase inverter
Power transistor (such as IGBT(insulated gate bipolar transistor) in pressure value, inverter chip operating voltage value and inverter)
Temperature value.
Illustratively, in electric vehicle inverter fault detection disclosed in this invention and one embodiment of processing method
In, the step (A2) further comprises: if any one of at least one described inverter driving status parameter is more than
Its corresponding scheduled threshold value, it is determined that the three-phase inverter breaks down.
Illustratively, in electric vehicle inverter fault detection disclosed in this invention and one embodiment of processing method
In, the step (A2) further comprises: if the temperature value of the power transistor in inverter is more than the first temperature threshold (example
Such as 90 DEG C), it is determined that fault level is first order failure, if the temperature value of the power transistor in inverter is more than the second temperature
It spends threshold value (such as 120 DEG C), it is determined that fault level is second level failure.
Illustratively, in electric vehicle inverter fault detection disclosed in this invention and one embodiment of processing method
In, the step (A2) further comprises: in case of the first order failure, then reducing the output work of the three-phase inverter
Rate, and in case of the second level failure, then stop the power output of the three-phase inverter (i.e. inverter stops working).
Illustratively, in electric vehicle inverter fault detection disclosed in this invention and one embodiment of processing method
In, the step (A2) further comprises: when determining since the temperature value of the power transistor in the three-phase inverter is more than
Scheduled threshold value and when breaking down, (such as 10ms) increases the value of the first counter at predetermined time intervals, until described first
The value of counter stops output power and the alarm of the three-phase inverter when being more than the first counter threshold, and then when true
When determining not break down due to the temperature value of the power transistor in the three-phase inverter more than scheduled threshold value, often
The value of first counter is reduced every predetermined time (such as 10ms), until the value of first counter is restored when being equal to 0
The normal power output (restoring the normal work of inverter) of the three-phase inverter.As a result, due to power transistor
Temperature value is more than that the failure of scheduled threshold value is recoverable.
Illustratively, in electric vehicle inverter fault detection disclosed in this invention and one embodiment of processing method
In, the step (A2) further comprises: when determining due to the current value or electricity of any circuitry phase in the three-phase inverter
When pressure value or inverter chip operating voltage value are more than scheduled threshold value and break down, at predetermined time intervals (such as 10ms)
Increase the value of the second counter, until the value of second counter stops the three-phase inversion when being more than the second counter threshold
The output power of device and alarm, and then when determining not due to the electric current of any circuitry phase in the three-phase inverter
When value or voltage value or inverter chip operating voltage value are more than scheduled threshold value and break down, (example at predetermined time intervals
Such as 10ms) value that reduces second counter, until the value of second counter is equal to 0, and do not restore the three-phase
The power output (once i.e. inverter breaks down in the case, then irrecoverable) of inverter.As a result, due to described three
The current value or voltage value or inverter chip operating voltage value of any circuitry phase in phase inverter are more than scheduled threshold value
Failure be expendable.
Illustratively, in electric vehicle inverter fault detection disclosed in this invention and one embodiment of processing method
In, the step (A2) further comprises: assisting determining the three-phase inversion by detecting the communications status of inverter chip
Whether device breaks down.
Illustratively, in electric vehicle inverter fault detection disclosed in this invention and one embodiment of processing method
In, this method further comprises: three road temperature-detecting devices are respectively set to detect the three-phase inverter each independently
The temperature value of power transistor in every one-phase circuit, and include two physically separated temperature per temperature-detecting device all the way
Spending sensor, (thus two physically separated temperature sensors can be mutually redundant backup, so as to when one of temperature
Another temperature sensor still can normal use when spending sensor failure).
Illustratively, in electric vehicle inverter fault detection disclosed in this invention and one embodiment of processing method
In, the step (A2) further comprises: based on the temperature value of the power transistor in the three-phase inverter detected
The current amount of heat accumulated of power transistor is calculated, and stops the three-phase when amount of heat accumulated calculated is more than scheduled threshold value
Inverter power output (thus protect power transistor will not be excessively high due to temperature and damage).
Illustratively, in electric vehicle inverter fault detection disclosed in this invention and one embodiment of processing method
In, this method further comprises: when starting electric vehicle by way of powering on, acquisition comes from least one vehicle-mounted sensing
The signal of device detects the electric vehicle based at least one described start-up parameter therewith to obtain at least one start-up parameter
In three-phase inverter whether break down, and if it is determined that the three-phase inverter breaks down, then implement it is scheduled therefore
Hinder processing operation.
Illustratively, in electric vehicle inverter fault detection disclosed in this invention and one embodiment of processing method
In, at least one described start-up parameter includes current value and voltage value and the institute of every one-phase circuit in the three-phase inverter
State the power transistor (such as IGBT(insulated gate bipolar transistor) in three-phase inverter) temperature value.
Illustratively, in electric vehicle inverter fault detection disclosed in this invention and one embodiment of processing method
In, this method further comprises: based on reference voltage value to the current value and electricity of every one-phase circuit in the three-phase inverter
Pressure value is normalized to be mapped to range [0,4096].
Illustratively, in electric vehicle inverter fault detection disclosed in this invention and one embodiment of processing method
In, this method further comprises: if any in the current value and voltage value of every one-phase circuit in the three-phase inverter
It is a interior in range [2007,2089], it is determined that the three-phase inverter does not break down, has otherwise determined the three-phase inverter
It breaks down.
Illustratively, in electric vehicle inverter fault detection disclosed in this invention and one embodiment of processing method
In, this method further comprises: if power transistor in the three-phase inverter temperature value (typically -50 DEG C -
Between 250 DEG C) in scheduled range (such as near 100 DEG C), it is determined that the three-phase inverter does not break down, otherwise
Determine that the three-phase inverter has broken down.
Illustratively, in electric vehicle inverter fault detection disclosed in this invention and one embodiment of processing method
In, the reference voltage value is obtained by way of actually detected calibration (for example, by periodically detecting pre-determined number
Virtual voltage a reference value and calculate its average value and obtain the reference voltage value).
Therefore electric vehicle inverter fault detection disclosed in this invention and processing method at least have it is following excellent
Point: due to including temperature sensor in every one-phase circuit (i.e. each bridge arm) in the three-phase inverter, therefore can be more
It accurately detects failure and directly positions to the source of trouble.
Fig. 2 is the electric vehicle inverter fault detection and the schematic structure of processing unit of embodiment according to the present invention
Figure.As shown in Fig. 2, electric vehicle inverter fault detection disclosed in this invention and processing unit include the inspection of driving status failure
Survey unit 1 and starting state fault detection unit 2.The driving status fault detection unit 1 is configured as at electric vehicle
When in driving status, the signal of at least one sensor on each bridge arm for being located at three-phase inverter is acquired in real time
To obtain at least one inverter driving status parameter, institute is determined based at least one described inverter driving status parameter therewith
It states three-phase inverter whether to break down and its fault level, and if it is determined that the three-phase inverter breaks down, then root
Implement scheduled fault handling operation according to identified fault level.The starting state fault detection unit 2 is configured as working as
By way of powering on and when starting electric vehicle, the signal from least one onboard sensor is acquired to obtain at least one
Start-up parameter, and detect whether the three-phase inverter in the electric vehicle occurs based at least one described start-up parameter therewith
Failure, and if it is determined that the three-phase inverter breaks down, then he implements scheduled fault handling operation.
Illustratively, in electric vehicle inverter fault detection disclosed in this invention and one embodiment of processing unit
In, at least one described inverter driving status parameter includes the current value and electricity of every one-phase circuit in the three-phase inverter
Power transistor (such as IGBT(insulated gate bipolar transistor) in pressure value, inverter chip operating voltage value and inverter)
Temperature value.
Illustratively, in electric vehicle inverter fault detection disclosed in this invention and one embodiment of processing unit
In, the driving status fault detection unit 1 is configured to: if at least one described inverter driving status parameter
Any one of be more than its corresponding scheduled threshold value, it is determined that the three-phase inverter breaks down.
Illustratively, in electric vehicle inverter fault detection disclosed in this invention and one embodiment of processing unit
In, the driving status fault detection unit 1 is configured to: if the temperature value of the power transistor in inverter is super
Cross the first temperature threshold (such as 90 DEG C), it is determined that fault level is first order failure, if the power transistor in inverter
Temperature value be more than second temperature threshold value (such as 120 DEG C), it is determined that fault level be second level failure.
Illustratively, in electric vehicle inverter fault detection disclosed in this invention and one embodiment of processing unit
In, the driving status fault detection unit 1 is configured to: in case of the first order failure, then described in reduction
The output power of three-phase inverter, and in case of the second level failure, then stop the power output of the three-phase inverter
(i.e. inverter stops working).
Illustratively, in electric vehicle inverter fault detection disclosed in this invention and one embodiment of processing unit
In, the driving status fault detection unit 1 is configured to: when determining since the power in the three-phase inverter is brilliant
When the temperature value of body pipe is more than scheduled threshold value and breaks down, (such as 10ms) increases by the first counter at predetermined time intervals
Value, until the value of first counter stops the output power and report of the three-phase inverter when being more than the first counter threshold
It is alert, and then when determining not since the temperature value of the power transistor in the three-phase inverter is more than scheduled threshold value
And when breaking down, (such as 10ms) reduces the value of first counter at predetermined time intervals, until first counter
Value restore the normal power output normal work of inverter (restore) of the three-phase inverter when being equal to 0.Attribution as a result,
In power transistor temperature value be more than scheduled threshold value failure be recoverable.
Illustratively, in electric vehicle inverter fault detection disclosed in this invention and one embodiment of processing unit
In, the driving status fault detection unit 1 is configured to: when determining due to any phase in the three-phase inverter
When the current value or voltage value or inverter chip operating voltage value of circuit are more than scheduled threshold value and break down, every pre-
Fix time (such as 10ms) increase the second counter value, until second counter value be more than the second counter threshold when
Stop the output power of the three-phase inverter and alarm, and then when determining not due in the three-phase inverter
When the current value or voltage value or inverter chip operating voltage value of any circuitry phase are more than scheduled threshold value and break down,
(such as 10ms) reduces the value of second counter at predetermined time intervals, until the value of second counter is equal to 0, and
The power output (once i.e. inverter breaks down in the case, then irrecoverable) of the three-phase inverter is not restored.By
This, due to the current value or voltage value or inverter chip operating voltage value of any circuitry phase in the three-phase inverter
Failure more than scheduled threshold value is expendable.
Illustratively, in electric vehicle inverter fault detection disclosed in this invention and one embodiment of processing unit
In, the driving status fault detection unit 1 is configured to: being assisted by detecting the communications status of inverter chip
Determine whether the three-phase inverter breaks down.
Illustratively, in electric vehicle inverter fault detection disclosed in this invention and one embodiment of processing unit
In, the driving status fault detection unit 1 is configured to: being detected each independently via three road temperature-detecting devices
The temperature value of power transistor in every one-phase circuit of the three-phase inverter, wherein including two per temperature-detecting device all the way
A physically separated temperature sensor (thus two physically separated temperature sensors can be mutually redundant backup, with
Another temperature sensor still can normal use when the one of temperature sensor of box lunch breaks down).
Illustratively, in electric vehicle inverter fault detection disclosed in this invention and one embodiment of processing unit
In, the driving status fault detection unit 1 is configured to: based on the power in the three-phase inverter detected
The temperature value of transistor calculates the current amount of heat accumulated of power transistor, and when amount of heat accumulated calculated is more than scheduled threshold
Stop the power output (thus power transistor being protected not damage since temperature is excessively high) of the three-phase inverter when value.
Illustratively, in electric vehicle inverter fault detection disclosed in this invention and one embodiment of processing unit
In, at least one described start-up parameter includes current value and voltage value and the institute of every one-phase circuit in the three-phase inverter
State the power transistor (such as IGBT(insulated gate bipolar transistor) in three-phase inverter) temperature value.
Illustratively, in electric vehicle inverter fault detection disclosed in this invention and one embodiment of processing unit
In, the starting state fault detection unit 2 is configured to: based on reference voltage value in the three-phase inverter
The current value and voltage value of every one-phase circuit are normalized to be mapped to range [0,4096].
Illustratively, in electric vehicle inverter fault detection disclosed in this invention and one embodiment of processing unit
In, the starting state fault detection unit 2 is configured to: if every one-phase circuit in the three-phase inverter
Any of current value and voltage value are in range [2007,2089], it is determined that the three-phase inverter does not break down, no
Then determine that the three-phase inverter has broken down.
Illustratively, in electric vehicle inverter fault detection disclosed in this invention and one embodiment of processing unit
In, the starting state fault detection unit 2 is configured to: if power transistor in the three-phase inverter
Temperature value (typically between -50 DEG C -250 DEG C) is in scheduled range (such as near 100 DEG C), it is determined that the three-phase
Inverter does not break down, otherwise determines that the three-phase inverter has broken down.
Illustratively, in electric vehicle inverter fault detection disclosed in this invention and one embodiment of processing unit
In, the reference voltage value is obtained by way of actually detected calibration (for example, by periodically detecting pre-determined number
Virtual voltage a reference value and calculate its average value and obtain the reference voltage value).
Therefore electric vehicle inverter fault detection disclosed in this invention and processing unit at least have it is following excellent
Point: due to including temperature sensor in every one-phase circuit (i.e. each bridge arm) in the three-phase inverter, therefore can be more
It accurately detects failure and directly positions to the source of trouble.
In addition, the present invention also discloses the storage medium for storing computer-readable instruction, the computer-readable instruction
It can be executed by one or more processors to implement electric vehicle inverter fault detection and processing method as elucidated before.
The present invention also provides controllers comprising memory and processor are stored with program instruction in memory, the program
Instruction can be realized when being executed by the processor any one as described above electric vehicle inverter fault detection and
Processing method.It should be appreciated that the electric vehicle that the instruction stored in memory is and it can be realized when being executed by processor
The step of specific example of the detection of fault of converter and processing method, is corresponding.In execution process instruction, executing step can
In the case where control, which is also possible to that processor is enabled to realize that electric vehicle as described above is inverse when executing the instruction
Become device fault detection and each exemplary instruction of processing method.
Although the present invention is described by above-mentioned preferred embodiment, way of realization is not limited to
Above-mentioned embodiment.It will be appreciated that in the case where not departing from spirit and scope of the present invention, those skilled in the art can be with
Different change and modification are made to the present invention.
Claims (19)
1. a kind of electric vehicle inverter fault detection and processing method comprising:
(A1) it when electric vehicle is in driving status, is acquired on each bridge arm for being located at three-phase inverter in real time
The signal of at least one sensor is to obtain at least one inverter driving status parameter；
(A2) based at least one described inverter driving status parameter determine the three-phase inverter whether break down and its
Fault level；
(A3) if it is determined that the three-phase inverter breaks down, then implemented at scheduled failure according to identified fault level
Reason operation.
2. electric vehicle inverter fault detection according to claim 1 and processing method, which is characterized in that it is described at least
One inverter driving status parameter includes the current value and voltage value, inverter of every one-phase circuit in the three-phase inverter
The temperature value of power transistor in chip operating voltage value and inverter.
3. electric vehicle inverter fault detection according to claim 2 and processing method, which is characterized in that the step
(A2) further comprise: if any one of at least one described inverter driving status parameter is more than that its is corresponding predetermined
Threshold value, it is determined that the three-phase inverter breaks down.
4. electric vehicle inverter fault detection according to claim 3 and processing method, which is characterized in that the step
(A2) further comprise: if the temperature value of the power transistor in inverter is more than the first temperature threshold, it is determined that failure etc.
Grade is first order failure, if the temperature value of the power transistor in inverter is more than second temperature threshold value, it is determined that failure etc.
Grade is second level failure.
5. electric vehicle inverter fault detection according to claim 4 and processing method, which is characterized in that the step
(A2) further comprise: in case of the first order failure, then reducing the output power of the three-phase inverter, and if hair
The raw second level failure, then stop the power output of the three-phase inverter.
6. electric vehicle inverter fault detection according to claim 5 and processing method, which is characterized in that the step
(A2) further comprise: when determine due to the power transistor in the three-phase inverter temperature value be more than scheduled threshold value and
When breaking down, increase the value of the first counter at predetermined time intervals, until the value of first counter is more than the first counting
Stop the output power of the three-phase inverter and alarm when device threshold value, and then when determining not due to three contrary
When the temperature value of the power transistor become in device is more than scheduled threshold value and breaks down, described first is reduced at predetermined time intervals
The value of counter, until the value of first counter restores the normal power output of the three-phase inverter when being equal to 0.
7. electric vehicle inverter fault detection according to claim 6 and processing method, which is characterized in that the step
(A2) further comprise: when determining due to the current value or voltage value of any circuitry phase in the three-phase inverter or inversion
When device chip operating voltage value is more than scheduled threshold value and breaks down, increase the value of the second counter at predetermined time intervals, directly
Stop output power and the alarm of the three-phase inverter when extremely the value of second counter is more than the second counter threshold, and
And then when determining not due to the current value or voltage value or inverter of any circuitry phase in the three-phase inverter
When chip operating voltage value is more than scheduled threshold value and breaks down, the value of second counter is reduced at predetermined time intervals,
Until the value of second counter is equal to 0, and the power output of the three-phase inverter is not restored.
8. electric vehicle inverter fault detection according to claim 7 and processing method, which is characterized in that the step
(A2) further comprise: assisting determining whether the three-phase inverter occurs event by detecting the communications status of inverter chip
Barrier.
9. electric vehicle inverter fault detection according to claim 8 and processing method, which is characterized in that this method into
One step includes: to be respectively set in every one-phase circuit of the three road temperature-detecting devices to detect the three-phase inverter each independently
Power transistor temperature value, and include two physically separated temperature sensors per temperature-detecting device all the way.
10. electric vehicle inverter fault detection according to claim 9 and processing method, which is characterized in that the step
Suddenly (A2) further comprises: the temperature value based on the power transistor in the three-phase inverter detected calculates power crystal
The current amount of heat accumulated of pipe, and stop the function of the three-phase inverter when amount of heat accumulated calculated is more than scheduled threshold value
Rate output.
11. electric vehicle inverter fault detection according to claim 10 and processing method, which is characterized in that this method
Further comprise: when starting electric vehicle by way of powering on, acquiring the signal from least one onboard sensor
To obtain at least one start-up parameter, and the three-phase in the electric vehicle is detected based at least one described start-up parameter therewith
Whether inverter breaks down, and if it is determined that the three-phase inverter breaks down, then implements scheduled troubleshooting behaviour
Make.
12. electric vehicle inverter fault detection according to claim 11 and processing method, which is characterized in that it is described extremely
Lack the current value and voltage value and three contrary that a start-up parameter includes every one-phase circuit in the three-phase inverter
Become the temperature value of the power transistor in device.
13. electric vehicle inverter fault detection according to claim 12 and processing method, which is characterized in that this method
Further comprise: being returned based on current value and voltage value of the reference voltage value to every one-phase circuit in the three-phase inverter
One changes to be mapped to range [0,4096].
14. electric vehicle inverter fault detection according to claim 13 and processing method, which is characterized in that this method
Further comprise: if any of current value and voltage value of every one-phase circuit in the three-phase inverter are in range
In [2007,2089], it is determined that the three-phase inverter does not break down, otherwise determines that event has occurred for the three-phase inverter
Barrier.
15. electric vehicle inverter fault detection according to claim 14 and processing method, which is characterized in that this method
Further comprise: if the temperature value of the power transistor in the three-phase inverter is in predetermined range, it is determined that described
Three-phase inverter does not break down, otherwise determines that the three-phase inverter has broken down.
16. electric vehicle inverter fault detection according to claim 15 and processing method, which is characterized in that the base
Quasi- voltage value is obtained by way of actually detected calibration.
17. a kind of electric vehicle inverter fault detection and processing unit, the electric vehicle inverter fault detection and processing
Device includes driving status fault detection unit, and the driving status fault detection unit is configured as being in row when electric vehicle
When sailing in state, the signal of at least one sensor on each bridge arm for being located at three-phase inverter is acquired in real time to obtain
At least one inverter driving status parameter is taken, determines described three based at least one described inverter driving status parameter therewith
Whether phase inverter breaks down and its fault level, and if it is determined that the three-phase inverter breaks down, then according to institute
Determining fault level implements scheduled fault handling operation.
18. electric vehicle inverter fault detection according to claim 17 and processing unit, which is characterized in that the dress
Setting further comprises starting state fault detection unit, and the starting state fault detection unit is configured as when by powering on
Mode and when starting electric vehicle, acquire the signal from least one onboard sensor to obtain at least one start-up parameter,
And detect whether the three-phase inverter in the electric vehicle breaks down based at least one described start-up parameter therewith, and
If it is determined that the three-phase inverter breaks down, then implement scheduled fault handling operation.
19. a kind of for storing the storage medium of computer-readable instruction, the computer-readable instruction can be by one or more
A processor is executed to implement the electric vehicle inverter fault detection as described in any one of claim 1-16 claim
And processing method.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710492513.2A CN109143109A (en) | 2017-06-26 | 2017-06-26 | Electric vehicle inverter fault detection and processing method, device and storage medium |
| PCT/CN2018/092128 WO2019001329A1 (en) | 2017-06-26 | 2018-06-21 | Fault detection and processing method and apparatus for electric vehicle inverter, and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710492513.2A CN109143109A (en) | 2017-06-26 | 2017-06-26 | Electric vehicle inverter fault detection and processing method, device and storage medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109143109A true CN109143109A (en) | 2019-01-04 |
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| CN201710492513.2A Pending CN109143109A (en) | 2017-06-26 | 2017-06-26 | Electric vehicle inverter fault detection and processing method, device and storage medium |
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| CN (1) | CN109143109A (en) |
| WO (1) | WO2019001329A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111882835A (en) * | 2020-07-29 | 2020-11-03 | 合肥阳光智维科技有限公司 | Fault early warning method and device of inverter and computer readable storage medium |
| CN116380176A (en) * | 2023-05-29 | 2023-07-04 | 深圳市百事泰电气有限公司 | Load early warning system of inverter based on digital signal processing |
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| CN116380176B (en) * | 2023-05-29 | 2023-08-29 | 深圳市百事泰电气有限公司 | Load early warning system of inverter based on digital signal processing |
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| WO2019001329A1 (en) | 2019-01-03 |
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