CN107976627A - Method for diagnosing faults, system and the vehicle of motor driven systems - Google Patents
Method for diagnosing faults, system and the vehicle of motor driven systems Download PDFInfo
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- CN107976627A CN107976627A CN201610921831.1A CN201610921831A CN107976627A CN 107976627 A CN107976627 A CN 107976627A CN 201610921831 A CN201610921831 A CN 201610921831A CN 107976627 A CN107976627 A CN 107976627A
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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
- G01R31/34—Testing dynamo-electric machines
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Abstract
The invention discloses a kind of method for diagnosing faults of motor driven systems, system and vehicle, this method includes：The software and/or hardware of motor driven systems are monitored, to judge that motor driven systems whether there is over-voltage fault；Compare actual torque and demand torque, to judge that motor driven systems whether there is moment of torsion failure of removal according to the torque difference between actual torque and demand torque；When judge motor driven systems there are over-voltage fault and/or motor driven systems there are during moment of torsion failure of removal, control motor driven systems enter safe mode.The method of the present invention can timely be diagnosed to be overvoltage and the moment of torsion failure of removal of motor driven systems, and then ensure that vehicle is reliable and stably runs.
Description
Technical field
The present invention relates to automobile technical field, more particularly to a kind of method for diagnosing faults of motor driven systems, system and
Vehicle.
Background technology
Electric automobile has the advantages that energy-saving and emission-reduction, and as its name suggests, the motor driven systems of electric automobile are electric automobiles
Power-transmitting part, the traveling of driving or traction electric automobile, therefore, the safety and reliabilities of motor driven systems is to closing
It is important, concern the reliability and stability of this vehicle.
In correlation technique, the fault diagnosis common practice of motor driven systems is mainly carried out by software and hardware threshold values
Diagnosis, when reaching threshold values numerical value, reporting fault, motor is out of service, this diagnostic mode obviously it is impossible to meet
The requirement of ISO26262 ASILC safe classes, and then bring security risk to the reliability and stability of vehicle.
The content of the invention
It is contemplated that one of technical problem in above-mentioned correlation technique is solved at least to a certain extent.
For this reason, an object of the present invention is to provide a kind of method for diagnosing faults of motor driven systems.This method energy
Enough overvoltage and moment of torsion failure of removal for being timely diagnosed to be motor driven systems, and then ensure that vehicle is reliable and stably runs.
It is another object of the present invention to provide a kind of fault diagnosis system of motor driven systems.
It is yet a further object of the present invention to provide a kind of vehicle.
To achieve these goals, the embodiment of the first aspect of the present invention discloses a kind of failure of motor driven systems
Diagnostic method, comprises the following steps：The software and/or hardware of motor driven systems are monitored, to judge that the motor drives
Dynamic system whether there is over-voltage fault；Compare actual torque and demand torque, with according to the actual torque and demand torque it
Between torque difference judge that the motor driven systems whether there is moment of torsion failure of removal；When judging that the motor driven systems deposit
In over-voltage fault and/or the motor driven systems, there are during moment of torsion failure of removal, control the motor driven systems to enter peace
Syntype.
The method for diagnosing faults of motor driven systems according to embodiments of the present invention can timely be diagnosed to be motor driving
The overvoltage of system and moment of torsion failure of removal, and then ensure that vehicle is reliable and stably runs.
In addition, the method for diagnosing faults of motor driven systems according to the above embodiment of the present invention can also be with following attached
The technical characteristic added：
In some instances, safe mode includes idle pulley and active short-circuit mode, wherein, when the motor drivetrain
There are during over-voltage fault, control the motor driven systems to enter the active short-circuit mode for system；When the motor driven systems
Enter the idle pulley there are the motor driven systems during moment of torsion failure of removal, are controlled；When the motor driven systems are deposited
In over-voltage fault and moment of torsion failure of removal, the motor driven systems are controlled to enter the active short-circuit mode, and predetermined
The idle pulley is transferred to after time.
In some instances, after the motor driven systems enter the active short-circuit mode, further include：According to event
Barrier type determines failure rank, wherein, the failure rank includes main core chip level failure, verification level failure and driving stage failure.
In some instances, the over-voltage fault of the motor driven systems includes being produced by external power supplies such as high voltage power batteries
Raw over-voltage fault and the over-voltage fault produced by the working status of motor driven systems, wherein, when the over-voltage fault is served as reasons
High voltage power battery performs the first over-pressed Diagnostic Strategy, when the over-voltage fault is when the over-voltage fault that external power supply produces
During the over-voltage fault produced by the working status of motor driven systems, the second over-pressed Diagnostic Strategy is performed, wherein, first mistake
The Diagnostic Strategy motor driven systems limit Power operation, and open overvoltage crowbar in order to control is pressed, second overvoltage is examined
When disconnected strategy is operated in power generation mode for the motor driven systems, the motor driven systems limit Power operation is controlled, and open
Open overvoltage crowbar.
In some instances, when the motor driven systems enter idle pulley, the 3rd over-pressed Diagnostic Strategy is performed, its
In, the described 3rd over-pressed Diagnostic Strategy includes：When software is normal and when motor speed exceedes reservation threshold, switches to the master
Dynamic short-circuit mode；When software anomaly then switches to the active short-circuit mode.
The embodiment of second aspect of the present invention discloses a kind of fault diagnosis system of motor driven systems, including：Monitoring
Module, is monitored for the software to motor driven systems and/or hardware, to judge that the motor driven systems whether there is
Over-voltage fault；Comparison module, for comparing actual torque and demand torque, with according between the actual torque and demand torque
Torque difference judge that the motor driven systems whether there is moment of torsion failure of removal；Control module, judges the electricity for working as
There are during moment of torsion failure of removal, control the motor to drive there are over-voltage fault and/or the motor driven systems for machine drive system
Dynamic system enters safe mode.
In addition, the fault diagnosis system of motor driven systems according to the above embodiment of the present invention can also be with following attached
The technical characteristic added：
In some instances, the safe mode includes idle pulley and active short-circuit mode, wherein, when the motor drives
For dynamic system there are during over-voltage fault, the control module controls the motor driven systems to enter the active short-circuit mode, when
For the motor driven systems there are during moment of torsion failure of removal, the control module controls the motor driven systems to enter the sky
Not busy pattern, when the motor driven systems are there are when over-voltage fault and moment of torsion failure of removal, the control module controls the electricity
Machine drive system enters the active short-circuit mode, and the idle pulley is transferred to after the scheduled time.
In some instances, after the motor driven systems enter the active short-circuit mode, the control module
Be additionally operable to determine failure rank according to fault type, wherein, the failure rank include main core chip level failure, verification level failure and
Driving stage failure.
In some instances, the over-voltage fault of the motor driven systems includes being produced by external power supplies such as high voltage power batteries
Raw over-voltage fault and the over-voltage fault produced by the working status of motor driven systems, wherein, when the over-voltage fault is served as reasons
When the over-voltage fault that external power supply produces, the control module is used to perform the first over-pressed Diagnostic Strategy high voltage power battery,
When the over-voltage fault is the over-voltage fault produced by the working status of motor driven systems, the control module is used to perform
Second over-pressed Diagnostic Strategy, when the motor driven systems enter idle pulley, the control module performs the 3rd overvoltage and examines
Disconnected strategy, wherein, the described first over-pressed Diagnostic Strategy motor driven systems limit Power operation, and open over-pressed guarantor in order to control
Protection circuit, when the described second over-pressed Diagnostic Strategy is operated in power generation mode for the motor driven systems, controls the motor to drive
Dynamic system limits Power operation, and opens overvoltage crowbar, and the described 3rd over-pressed Diagnostic Strategy is included when software is normal and works as electricity
When machine rotating speed exceedes reservation threshold, the active short-circuit mode is switched to and when software anomaly then switches to the active short circuit
Pattern.
The embodiment of the third aspect of the present invention discloses a kind of vehicle, including：According to any one above-mentioned embodiment institute
The fault diagnosis system for the motor driven systems stated.The vehicle can timely be diagnosed to be overvoltage and the moment of torsion of motor driven systems
Failure of removal, and then ensure that vehicle is reliable and stably runs.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage combination accompanying drawings below of the present invention in the description of embodiment to that will become
Substantially and it is readily appreciated that, wherein：
Fig. 1 is the flow chart of the method for diagnosing faults of motor driven systems according to an embodiment of the invention；
Fig. 2 is the schematic diagram of motor driven systems according to an embodiment of the invention；And
Fig. 3 is the structure diagram of the fault diagnosis system of motor driven systems according to an embodiment of the invention.
Embodiment
The embodiment of the present invention is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or has the function of same or like element.Below with reference to attached
The embodiment of figure description is exemplary, and is only used for explaining the present invention, and is not considered as limiting the invention.
Method for diagnosing faults, system and the car of motor driven systems according to embodiments of the present invention are described below in conjunction with attached drawing
.Wherein, motor driven systems are referred to as electric system.
Fig. 1 is the flow chart of the method for diagnosing faults of motor driven systems according to an embodiment of the invention.Such as Fig. 1 institutes
Show, the method for diagnosing faults of motor driven systems according to an embodiment of the invention, includes the following steps：
S101：The software and/or hardware of motor driven systems are monitored, to judge that motor driven systems whether there is
Over-voltage fault.
S102：Compare actual torque and demand torque, to sentence according to the torque difference between actual torque and demand torque
Power machine drive system whether there is moment of torsion failure of removal.
S103：When judging motor driven systems, there are over-voltage fault and/or motor driven systems, there are moment of torsion failure of removal
When, control motor driven systems enter safe mode.
Wherein, to the three layer diagnosis modes that are diagnosed as of the software function of motor driven systems, hardware capability and moment of torsion,
One layer of diagnosis that can be regarded as to the software function of motor driven systems, the second layer can be regarded as the moment of torsion to motor driven systems
Diagnosis, third layer can be regarded as the diagnosis to the hardware capability of motor driven systems.Specifically：
First layer：All and the relevant input of torque safety and function are diagnosed, if reaching predetermined threshold value, is illustrated with turning round
There is exception in the safety-related input of square and function, at this time, motor driven systems are switched to safe mode.
The second layer：Currently practical moment of torsion and demand torque are contrasted, if both differences have exceeded a limit value (i.e.：Exceed
Safe range), illustrate that exception occurs in moment of torsion, at this time, motor driven systems are switched to safe mode.
Third layer：Monitor the hardware capability of controller in real time, and illustrate motor drivetrain when hardware capability occurs abnormal
There is exception in the hardware of system, at this point it is possible to be switched to safe mode in time by drive circuit.
The method for diagnosing faults of motor driven systems according to embodiments of the present invention can timely be diagnosed to be motor driving
The overvoltage of system and moment of torsion failure of removal, and then ensure that vehicle is reliable and stably runs.
In one embodiment of the invention, safe mode includes idle pulley and active short-circuit mode, wherein, work as motor
For drive system there are during over-voltage fault, control motor driven systems enter active short-circuit mode；Turned round when motor driven systems exist
During square failure of removal, control motor driven systems enter the idle pulley；When motor driven systems, there are over-voltage fault and torsion
During square failure of removal, control motor driven systems enter active short-circuit mode, and are transferred to idle pulley i.e. after the scheduled time：Such as
Fruit there occurs over-voltage fault and moment of torsion failure of removal, then controls motor driven systems to enter active short-circuit mode first at the same time, with
By motor U, V, W three-phases are switched to power module T- ends, or motor U, V, W three-phases are switched to power module T+ ends, then
Control motor enters idle pulley, wherein, by motor U, V, W three-phases are switched to power module T- ends or by motor U, V, W tri-
Mutually it is switched to power module T+ ends and usually requires a specific time, therefore, can be by way of experiment or according to warp
Test the definite time (i.e.：Preset time), then after the time is reached, it is transferred to idle pulley.
As shown in Fig. 2, idle pulley is (i.e.：IDLE patterns), the IGBT of power module, which is completely in, in electric machine controller beats
Open state, so when DC terminal voltage is higher than motor induced voltage, in the diode of three-phase system there will be no electric current by,
Therefore motor would not produce torque.
Further in conjunction with Fig. 2, active short-circuit mode, can be activated when hardware fault or monitoring mistake etc. occurs, actively short
Road pattern is divided into short-circuit under active and actively upper short circuit, and actively lower short circuit, motor U, V, W three-phases are switched to power module T-
End；Short-circuit in active, motor U, V, W three-phase is switched to power module T+ ends.
Active short-circuit mode is divided into 3 grades of protections, and level-one is MCU main core chip levels, and two level verifies level for CPLD process circuits, and three
Level is Drive grades of electric machine controller, specifically, after motor driven systems enter active short-circuit mode, is further included：According to event
Barrier type determines failure rank, wherein, failure rank includes main core chip level failure (i.e.：MCU main core chip levels failure), verification level therefore
Barrier is (i.e.：CPLD process circuits verification level failure) and driving stage failure is (i.e.：Drive grades of failures).
Wherein, the condition of main core chip level failure generation is：The failures such as standby, internal error.
Verifying the condition that level failure produces is：The failures such as Overvoltage, Overcurrent, disable, crash.
Driving stage failure produce condition be：The failures such as DFW Error 30Vswith.
In the above description, standby, internal error, Overvoltage, Overcurrent, disable,
Crash, DFW Error 30Vswith etc. are fault type, and each fault type correspondingly corresponds to an error code.
In one embodiment of the invention, the over-voltage fault of motor driven systems includes exterior by high voltage power battery etc.
The over-voltage fault that power supply produces and the over-voltage fault produced by the working status of motor driven systems, wherein, when over-voltage fault is
By high voltage power battery when the over-voltage fault that external power supply produces, the first over-pressed Diagnostic Strategy is performed, when over-voltage fault is served as reasons
During the over-voltage fault that the working status of motor driven systems produces, the second over-pressed Diagnostic Strategy is performed.
Further, when motor driven systems enter idle pulley, the 3rd over-pressed Diagnostic Strategy is performed, wherein, the 3rd
Over-pressed Diagnostic Strategy includes：When software is normal and when motor speed exceedes reservation threshold, switches to active short-circuit mode；When soft
Part then switches to active short-circuit mode extremely.
Specifically, electric system overvoltage at present is mainly made of two aspects：
1st, electric system overvoltage is produced by external power supplies such as high voltage power batteries, the over-pressed Diagnostic Strategy of electric machine controller
For：
1) volume operation is dropped, and electric machine controller CAN fed back pressure drop volume state.
2) breaking circuit during electric machine controller hardware over-voltage；The state of electric machine controller is active short-circuit mode, passes through event
Hinder diagnostic feedback failure state, exiting for failure mode state need to be again lower electric.
2nd, electric system overvoltage is produced by working status, and electric system working status is power generation mode, electric machine controller
Over-pressed Diagnostic Strategy be：
1) volume operation is dropped, and electric machine controller CAN fed back pressure drop volume state.
2) breaking circuit during electric machine controller hardware over-voltage；Electric machine controller state is active short-circuit condition, passes through failure
Code feedback neutralization mode state is diagnosed, exiting for failure mode state need to be again lower electric.
Electric system working status is idle pulley, and the over-pressed Diagnostic Strategy of electric machine controller is：When software is normal, when turn
When speed exceedes threshold values, electric machine controller can switch to active short-circuit condition, busbar voltage will not be caused to rise；When software runs winged, firmly
Part logical triggering, the state of electric machine controller acquiescence is the short-circuit safe mode of active, busbar voltage will not be caused to rise.
The method for diagnosing faults of motor driven systems according to embodiments of the present invention, can timely be diagnosed to be motor driving
The overvoltage of system and moment of torsion failure of removal, in addition, performing three-phase active short-circuit protection plan for the over-voltage fault of electric machine controller
Slightly, diagnose step by step, so as to ensure that vehicle is reliable and stably runs.
Further, embodiment of the invention discloses that a kind of fault diagnosis system of motor driven systems.Such as Fig. 3 institutes
Show, disclose a kind of fault diagnosis system 300 of motor driven systems according to an embodiment of the invention, including：Monitoring modular
310th, comparison module 320 and control module 330.
Wherein, monitoring modular 310 is used to be monitored the software and/or hardware of motor driven systems, with described in judgement
Motor driven systems whether there is over-voltage fault.Comparison module 320 is used to compare actual torque and demand torque, with according to
Torque difference between actual torque and demand torque judges that the motor driven systems whether there is moment of torsion failure of removal.Control
Module 330 is used for that there are moment of torsion mistake there are over-voltage fault and/or the motor driven systems when judge the motor driven systems
When imitating failure, the motor driven systems are controlled to enter safe mode.
The fault diagnosis system of motor driven systems according to embodiments of the present invention can timely be diagnosed to be motor driving
The overvoltage of system and moment of torsion failure of removal, and then ensure that vehicle is reliable and stably runs.
In one embodiment of the invention, the safe mode includes idle pulley and active short-circuit mode, wherein, when
For the motor driven systems there are during over-voltage fault, the control module 330 controls the motor driven systems to enter the master
Dynamic short-circuit mode, when the motor driven systems are there are during moment of torsion failure of removal, the control module 330 controls the motor to drive
Dynamic system enters the idle pulley, when the motor driven systems are there are when over-voltage fault and moment of torsion failure of removal, the control
Molding block 330 controls the motor driven systems to enter the active short-circuit mode, and the free time is transferred to after the scheduled time
Pattern.
In one embodiment of the invention, after the motor driven systems enter the active short-circuit mode, institute
Control module 330 is stated to be additionally operable to determine failure rank according to fault type, wherein, the failure rank includes the event of main core chip level
Barrier, verification level failure and driving stage failure.
In one embodiment of the invention, the over-voltage fault of the motor driven systems is included by high voltage power battery etc.
The over-voltage fault that external power supply produces and the over-voltage fault produced by the working status of motor driven systems, wherein, when the mistake
It is by high voltage power battery when the over-voltage fault that external power supply produces to press failure, and the control module 330 is used to perform first
Over-pressed Diagnostic Strategy, when the over-voltage fault is the over-voltage fault produced by the working status of motor driven systems, the control
Molding block 330 is used to perform the second over-pressed Diagnostic Strategy, when the motor driven systems enter idle pulley, the control mould
Block 330 performs the 3rd over-pressed Diagnostic Strategy, wherein, the described 3rd over-pressed Diagnostic Strategy is included when software is normal and works as motor speed
During more than reservation threshold, the active short-circuit mode is switched to and when software anomaly then switches to the active short-circuit mode.
The fault diagnosis system of motor driven systems according to embodiments of the present invention, can timely be diagnosed to be motor driving
The overvoltage of system and moment of torsion failure of removal, in addition, performing three-phase active short-circuit protection plan for the over-voltage fault of electric machine controller
Slightly, diagnose step by step, so as to ensure that vehicle is reliable and stably runs.
It should be noted that the specific implementation of the fault diagnosis system of the motor driven systems of the embodiment of the present invention with
The specific implementation of the method for diagnosing faults of the motor driven systems of the embodiment of the present invention is similar, specifically refers to method part
Description, in order to reduce redundancy, do not repeat.
Further, embodiment of the invention discloses that a kind of vehicle, including：According to any one above-mentioned embodiment
Motor driven systems fault diagnosis system.Wherein, which is electric automobile or hybrid vehicle.The vehicle can
Overvoltage and the moment of torsion failure of removal of motor driven systems are timely diagnosed to be, and then ensures that vehicle is reliable and stably runs.
In addition, vehicle according to the above embodiment of the present invention other compositions and effect for this area ordinary skill
All it is known for personnel, in order to reduce redundancy, does not repeat herein.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment of the present invention or example.In the present specification, schematic expression of the above terms is not
It is that must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be
Combined in an appropriate manner in any one or more embodiments or example.In addition, without conflicting with each other, this area
Technical staff can carry out the different embodiments or example described in this specification and different embodiments or exemplary feature
With reference to and combination.
Although the embodiment of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (10)
1. a kind of method for diagnosing faults of motor driven systems, it is characterised in that comprise the following steps：
The software and/or hardware of motor driven systems are monitored, to judge the motor driven systems with the presence or absence of overvoltage
Failure；
Compare actual torque and demand torque, described in judging according to the torque difference between the actual torque and demand torque
Motor driven systems whether there is moment of torsion failure of removal；
When judging the motor driven systems, there are over-voltage fault and/or the motor driven systems, there are moment of torsion failure of removal
When, control the motor driven systems to enter safe mode.
2. the method for diagnosing faults of motor driven systems according to claim 1, it is characterised in that the safe mode bag
Idle pulley and active short-circuit mode are included, wherein,
When the motor driven systems, there are during over-voltage fault, control the motor driven systems to enter the active short circuit mould
Formula；
When the motor driven systems, there are during moment of torsion failure of removal, control the motor driven systems to enter the idle mould
Formula；
When the motor driven systems are there are when over-voltage fault and moment of torsion failure of removal, the motor driven systems are controlled to enter institute
Active short-circuit mode is stated, and the idle pulley is transferred to after the scheduled time.
3. the method for diagnosing faults of motor driven systems according to claim 2, it is characterised in that when the motor drives
System enters after the active short-circuit mode, further includes：
Failure rank is determined according to fault type, wherein, the failure rank includes main core chip level failure, verification level failure and drive
Dynamic level failure.
4. the method for diagnosing faults of the motor driven systems according to Claims 2 or 3, it is characterised in that the motor drives
The over-voltage fault of dynamic system includes the over-voltage fault produced by external power supplies such as high voltage power batteries and by motor driven systems
The over-voltage fault that working status produces, wherein,
When the over-voltage fault is by high voltage power battery when the over-voltage fault that external power supply produces, the first overvoltage diagnosis is performed
Strategy, when the over-voltage fault is the over-voltage fault produced by the working status of motor driven systems, performs the second overvoltage and examines
Disconnected strategy,
Wherein, the described first over-pressed Diagnostic Strategy motor driven systems limit Power operation, and open overvoltage protection in order to control
Circuit, when the described second over-pressed Diagnostic Strategy is operated in power generation mode for the motor driven systems, controls the motor to drive
System limits Power operation, and opens overvoltage crowbar.
5. the method for diagnosing faults of the motor driven systems according to Claims 2 or 3, it is characterised in that when the motor
When drive system enters idle pulley, the 3rd over-pressed Diagnostic Strategy is performed, wherein, the described 3rd over-pressed Diagnostic Strategy includes：
When software is normal and when motor speed exceedes reservation threshold, switches to the active short-circuit mode；
When software anomaly then switches to the active short-circuit mode.
A kind of 6. fault diagnosis system of motor driven systems, it is characterised in that including：
Monitoring modular, is monitored for the software to motor driven systems and/or hardware, to judge the motor driven systems
With the presence or absence of over-voltage fault；
Comparison module, for comparing actual torque and demand torque, with according to the torsion between the actual torque and demand torque
Square difference judges that the motor driven systems whether there is moment of torsion failure of removal；
Control module, for there are over-voltage fault and/or motor driven systems presence when judging the motor driven systems
During moment of torsion failure of removal, the motor driven systems are controlled to enter safe mode.
7. the fault diagnosis system of motor driven systems according to claim 6, it is characterised in that the safe mode bag
Idle pulley and active short-circuit mode are included, wherein, when the motor driven systems are there are during over-voltage fault, the control module control
Make the motor driven systems and enter the active short-circuit mode, when the motor driven systems are there are during moment of torsion failure of removal,
The control module controls the motor driven systems to enter the idle pulley, when the motor driven systems have overvoltage event
Barrier and during moment of torsion failure of removal, the control module control the motor driven systems to enter the active short-circuit mode, and
The idle pulley is transferred to after the scheduled time.
8. the fault diagnosis system of motor driven systems according to claim 7, it is characterised in that when the motor drives
System enters after the active short-circuit mode, and the control module is additionally operable to determine failure rank according to fault type, wherein,
The failure rank includes main core chip level failure, verification level failure and driving stage failure.
9. the fault diagnosis system of the motor driven systems according to claim 7 or 8, it is characterised in that the motor drives
The over-voltage fault of dynamic system includes the over-voltage fault produced by external power supplies such as high voltage power batteries and by motor driven systems
The over-voltage fault that working status produces, wherein,
When the over-voltage fault is by high voltage power battery when the over-voltage fault that external power supply produces, the control module is used for
The first over-pressed Diagnostic Strategy is performed, when the over-voltage fault is by the over-voltage fault of the working status generation of motor driven systems
When, the control module is used to perform the second over-pressed Diagnostic Strategy, described when the motor driven systems enter idle pulley
Control module performs the 3rd over-pressed Diagnostic Strategy, wherein, the described first over-pressed Diagnostic Strategy motor driven systems in order to control
Power operation is limited, and opens overvoltage crowbar, the described second over-pressed Diagnostic Strategy is operated in hair for the motor driven systems
During power mode, the motor driven systems limit Power operation is controlled, and opens overvoltage crowbar, the 3rd overvoltage diagnosis plan
Slightly include when software is normal and when motor speed exceedes reservation threshold, switches to the active short-circuit mode and when software is different
Chang Ze switches to the active short-circuit mode.
A kind of 10. vehicle, it is characterised in that including：According to the failure of claim 6-9 any one of them motor driven systems
Diagnostic system.
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| CN201610921831.1A CN107976627A (en) | 2016-10-21 | 2016-10-21 | Method for diagnosing faults, system and the vehicle of motor driven systems |
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| CN201610921831.1A CN107976627A (en) | 2016-10-21 | 2016-10-21 | Method for diagnosing faults, system and the vehicle of motor driven systems |
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| CN111106788A (en) * | 2018-10-26 | 2020-05-05 | 上海汽车集团股份有限公司 | Active short-circuit protection system of motor |
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| CN112627994A (en) * | 2020-12-21 | 2021-04-09 | 苏州绿控传动科技股份有限公司 | Method for realizing speed reduction and speed regulation of engine by utilizing active short circuit |
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| US11332029B2 (en) | 2020-01-31 | 2022-05-17 | Lear Corporation | Method and system for producing an active short circuit condition in an electric motor of a hybrid electric vehicle |
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| CN110588718A (en) * | 2019-08-28 | 2019-12-20 | 中国铁道科学研究院集团有限公司 | Method and device for monitoring broken shaft of EMU motor |
| CN113060001A (en) * | 2019-12-31 | 2021-07-02 | 北京新能源汽车股份有限公司 | Motor controller software overvoltage fault processing method and device and electric automobile |
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