CN108736447A - New energy automobile motor and its angular transducer fault diagnosis and protection algorism - Google Patents
New energy automobile motor and its angular transducer fault diagnosis and protection algorism Download PDFInfo
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- CN108736447A CN108736447A CN201810537506.4A CN201810537506A CN108736447A CN 108736447 A CN108736447 A CN 108736447A CN 201810537506 A CN201810537506 A CN 201810537506A CN 108736447 A CN108736447 A CN 108736447A
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- angular transducer
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- motor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/0833—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors for electric motors with control arrangements
Abstract
This application discloses a kind of New energy automobile motors and the motor angle sensor fault diagnosis and protection algorism, the algorithm to include the following steps：S1, the maximum angle variation delta θ max being likely to occur between adjacent angular samples twice are calculated according to current motor rotating speed first；S2, the adjacent angle signal changing value Δ θ twice for acquiring angular transducer are compared with the Δ θ max；If Δ θ<Δ θ max, using Δ θ as this angle change sampled value；If Δ θ >=Δ θ max, using Δ θ max as this angle change sampled value.The application greatlys improve the robustness and reliability of electric system while taking into account to power of motor module protection.
Description
Technical field
This application involves new-energy automobile fields, and in particular to a kind of New energy automobile motor and its angular transducer failure
Diagnosis and protection algorism.
Background technology
New energy automobile motor rotor angle signal is one of the most important signal that motor control needs, since automobile is answered
With adverse circumstances such as high-temperature vibratings, angle of rotor of motor sampling mostly uses rotary transformer.Rotary transformer input/output signal
It is connected to electric machine controller by signal harness, electric machine controller decodes the angle of real-time sampling rotor by signal, leads to
Rotor angle positioning rotor field is crossed, and then controls motor stator electric current to realize stator field and rotor field interaction production
The raw torque needed.
Due to angular transducer harsh vibration onboard and electromagnetic field environment, including signal connecting line and connector
The problems such as connection reliability under vibrating conditions, angle signal robustness is poor, is on the one hand easy to be interfered by forceful electric power, another
Aspect is susceptible to mutation due to poor contact in signal wire vibration processes, since motor stator current control is to be based on rotor
The Magnetic oriented control that angle carries out, angle mutation can cause current break to cause power of motor module (IGBT) overcurrent, seriously
Meeting cause IGBT to burn.
Invention content
The purpose of the application is：In view of the deficiencies of the prior art, the application proposes a kind of New energy automobile motor and the electricity
Machine angular transducer fault diagnosis and protection algorism greatly improve motor while taking into account to power of motor module protection
The robustness and reliability of system.
The technical solution of the application is：
A kind of New energy automobile motor angular transducer fault diagnosis and protection algorism, include the following steps：
S1, the maximum angle being likely to occur between adjacent angular samples twice is calculated according to current motor rotating speed first
Variation delta θ max；
S2, the adjacent angle signal changing value Δ θ twice for acquiring angular transducer are compared with the Δ θ max；
If Δ θ<Δ θ max, using Δ θ as this angle change sampled value；
If Δ θ >=Δ θ max, using Δ θ max as this angle change sampled value.
This New energy automobile motor angular transducer fault diagnosis of the application and protection algorism are in above-mentioned technical proposal
On the basis of, further include following preferred embodiment：
Cycle carries out above-mentioned steps S1 and step S2, if the case where Δ θ >=Δ θ max occurs in continuous N time, M is not less than 2
Natural number, then judge the angular samples signal fault of angular transducer, and disconnect the power module of motor.
" power module for disconnecting motor " is achieved：The motor is integrally powered off.
If the case where Δ θ >=Δ θ max occurs in continuous N time, alarm signal is sent out.
The M=2.
The M=3.
The M=4.
The Δ θ max are calculate by the following formula acquisition：
* 2 π * Ts of Δ θ max=K* (n/60)
Wherein：K is Margin coefficient, and n is current motor rotating speed, and π is pi, and Ts is the time of front and back angular samples twice
Interval.
A kind of New energy automobile motor, including：
Angular transducer for incuding electronics rotor angle,
The power module being connect with the angle sensor circuit, and
The electric machine controller being connect with the power module circuit；
Further include：
Computing unit, the computing unit is calculated according to current motor rotating speed may between adjacent angular samples twice
The maximum angle variation delta θ max of appearance；And
Comparing unit, adjacent angle signal changing value Δ θ twice that the comparing unit acquires angular transducer with
The Δ θ max compare, and comparison result is transferred to the electric machine controller；If Δ θ<Δ θ max, the electric machine controller will
Δ θ is as this angle change sampled value, if Δ θ >=Δ θ max, the electric machine controller will be using Δ θ max as this angle
Change sampled value.
If the case where Δ θ >=Δ θ max occurs in continuous N time, M is the natural number not less than 2, and the electric machine controller is disconnected
Open the power supply of the power module.
The advantages of the application is：
Angular transducer mostly uses hardware mode and is protected at present, and decoding chip passes through the diagnosis to revolving varying signal itself
It is protected, it, can frequent trigger protection action since application environment is severe on vehicle.Protection act will turn off IGBT, further
Lead to vehicle losing power, however be many times that signal is disturbed and reports by mistake once in a while, electric drive system robustness can be caused very poor.
The application carries out single angle amplitude amplitude limit, by bulk billing system to determine whether rotation varying signal failure, can both protect IGBT
Safety, and the robustness of electric system can be improved.
Description of the drawings
In order to illustrate more clearly of the technical solution of the embodiment of the present application, required use in being described below to embodiment
Attached drawing be briefly described, the accompanying drawings in the following description is only some embodiments of the present application, for the common skill in this field
For art personnel, without creative efforts, other drawings may also be obtained based on these drawings.
Fig. 1 is that Δ θ and Δ θ max compares figure in the embodiment of the present application；
Fig. 2 is New energy automobile motor angular transducer fault diagnosis and protection algorism flow chart in the embodiment of the present application.
Specific implementation mode
Said program is described further below in conjunction with specific embodiment.It should be understood that these embodiments are for illustrating
The application and be not limited to limitation scope of the present application.The implementation condition used in embodiment can be done according to the condition of specific producer
Further adjustment, the implementation condition being not specified is usually the condition in routine experiment.
Shown in referring to Figures 1 and 2, this New energy automobile motor angular transducer fault diagnosis of the present embodiment and protection are calculated
Method includes the following steps：
S1, the maximum angle being likely to occur between adjacent angular samples twice is calculated according to current motor rotating speed first
Variation delta θ max.
In this example, above-mentioned Δ θ max are calculate by the following formula acquisition：
* 2 π * Ts of Δ θ max=K* (n/60)
In above-mentioned calculating formula：K is Margin coefficient, and n is current motor rotating speed, and π is pi, and Ts is front and back angle twice
The time interval of sampling, can refer to shown in Fig. 1.Normal angle signal should be carried out according to the long broken line of continuous bending in Fig. 1
Variation.
Certainly, we can also adopt the maximum angular for obtaining be likely to occur between adjacent angular samples twice with other methods
Spend variation delta θ max.
S2, the adjacent angle signal changing value Δ θ twice that angular transducer acquires is made comparisons with above-mentioned Δ θ max；
If Δ θ<Δ θ max, then it is assumed that this effectively, using Δ θ as this angle change sampled value, postorder to motor and
Δ θ is subject in the various controls of its Accessory Members；
If Δ θ >=Δ θ max, using Δ θ max as this angle change sampled value, postorder is to motor and its Accessory Members
Various controls be subject to Δ θ max.
Obviously, when electrical power is run, rotor constantly rotates, and at the same time the angular transducer of motor also can be continuous
Ground obtains the angle information of rotor.So above-mentioned steps S1 and step S2 can recycle progress, if continuously occurring Δ θ three times
The case where >=Δ θ max, then judges that angular transducer breaks down (angle value of angular transducer induction is inaccurate).In this feelings
Under condition, in order to protect the power module of motor from damage, the power module of motor is disconnected into (power-off), the disconnection of power module
It can specifically be realized by integrally being powered off to motor.And the alarm signal of sound or light is sent out, remind people's motor to break down.
In the present embodiment, we be specifically chosen it is continuous occur Δ θ >=Δ θ max three times in the case of, assert angle sensor
The angular samples signal of device breaks down, and disconnects power of motor module.If being more heavily weighted toward the peace for ensureing power of motor module
Quan Xing keeps protection act more sensitive, can select after occurring the case where Δ θ >=Δ θ max twice in succession, just disconnects motor
Power module.If being more heavily weighted toward the robustness of raising system, it can also select Δ θ >=Δ occur at continuous four times or more times
In the case of θ max, power of motor module is just disconnected.
When why this example selects continuously that the case where Δ θ >=Δ θ max occurs in (rather than twice nor four times) three times, disconnect
Power of motor module is the robustness for the safety and electric system for having considered power of motor module (IGBT).
Existing New energy automobile motor generally all includes：Angular transducer for incuding electronics rotor angle, with angle
Spend the power module of sensor circuit connection, the electric machine controller being connect with power module circuit.In order to make new-energy automobile electric
Machine has above-mentioned angular transducer fault diagnosis and guard method, we can configure corresponding computing unit and ratio in motor
Compared with unit.Wherein：Computing unit, which is responsible for being calculated between adjacent angular samples twice according to current motor rotating speed, to be likely to occur
Maximum angle variation delta θ max.Comparing unit is responsible for the adjacent angle signal changing value twice for acquiring angular transducer
Comparison result is transferred to electric machine controller by Δ θ compared with Δ θ max.If comparison result shows Δ θ<Δ θ max, motor control
Device processed is using Δ θ as this angle change sampled value, to control the various parameters of electric system.If comparison result display Δ θ >=
Δ θ max, electric machine controller will be using Δ θ max as this angle change sampled value, to control the various parameters of electric system.Such as
There is the case where Δ θ >=Δ θ max in fruit continuous several times, and the power supply that electric machine controller disconnects power module (can be by motor entirety
It powers off to realize).
With reference to shown in Fig. 2, the software implementation method of above-mentioned algorithm is：After entry angle sampling routine, calculate first current
Then double sampling interval time possible maximum angle variation delta θ max under speed conditions carry out current angular sampling and count
Angle variable quantity is calculated, current angular variation delta θ is less than Δ θ max, it is believed that this sampling is effective, using current value as this
Sampled value otherwise with maximum value Δ θ max this sampled value the most, and adds up to counter N, when sampling next time, if
Δ θ is also greater than Δ θ max, and then counter adds up, otherwise counter O reset.
Above-described embodiment is only the technical concepts and features for illustrating the application, and its object is to allow people that can understand this Shen
Content please is simultaneously implemented according to this, and the protection domain of the application can not be limited with this.It is all according to the application main technical schemes
The equivalent transformation or modification that Spirit Essence is done, should all cover within the protection domain of the application.
Claims (10)
1. a kind of New energy automobile motor angular transducer fault diagnosis and protection algorism, which is characterized in that include the following steps：
S1, the maximum angle variation being likely to occur between adjacent angular samples twice is calculated according to current motor rotating speed first
Measure Δ θ max；
S2, the adjacent angle signal changing value Δ θ twice for acquiring angular transducer are compared with the Δ θ max；
If Δ θ<Δ θ max, using Δ θ as this angle change sampled value；
If Δ θ >=Δ θ max, using Δ θ max as this angle change sampled value.
2. New energy automobile motor angular transducer fault diagnosis as described in claim 1 and protection algorism, which is characterized in that
Cycle carries out above-mentioned steps S1 and step S2, if the case where Δ θ >=Δ θ max occurs in continuous N time, M is the natural number not less than 2,
Then judge the angular samples signal fault of angular transducer, and disconnects the power module of motor.
3. New energy automobile motor angular transducer fault diagnosis as claimed in claim 2 and protection algorism, which is characterized in that
" power module for disconnecting motor " is achieved：The motor is integrally powered off.
4. New energy automobile motor angular transducer fault diagnosis as claimed in claim 2 and protection algorism, which is characterized in that
If the case where Δ θ >=Δ θ max occurs in continuous N time, alarm signal is sent out.
5. the New energy automobile motor angular transducer fault diagnosis as described in Claims 2 or 3 or 4 and protection algorism, special
Sign is, the M=2.
6. the New energy automobile motor angular transducer fault diagnosis as described in Claims 2 or 3 or 4 and protection algorism, special
Sign is, the M=3.
7. the New energy automobile motor angular transducer fault diagnosis as described in Claims 2 or 3 or 4 and protection algorism, special
Sign is, the M=4.
8. New energy automobile motor angular transducer fault diagnosis as described in claim 1 and protection algorism, which is characterized in that
The Δ θ max are calculate by the following formula acquisition：
* 2 π * Ts of Δ θ max=K* (n/60)
Wherein：K is Margin coefficient, and n is current motor rotating speed, and π is pi, and Ts is between the front and back time of angular samples twice
Every.
9. a kind of New energy automobile motor, including：
For the angular transducer of induction electromotor rotor angle,
The power module being connect with the angle sensor circuit, and
The electric machine controller being connect with the power module circuit；
It is characterized in that, further including：
Computing unit, the computing unit are calculated between adjacent angular samples twice according to current motor rotating speed and are likely to occur
Maximum angle variation delta θ max；And
Comparing unit, the adjacent angle signal changing value Δ θ twice that the comparing unit acquires angular transducer with it is described
Δ θ max compare, and comparison result is transferred to the electric machine controller；If Δ θ<Δ θ max, the electric machine controller is by Δ θ
As this angle change sampled value, if Δ θ >=Δ θ max, the electric machine controller will be using Δ θ max as this angle change
Sampled value.
10. New energy automobile motor according to claim 9, which is characterized in that if Δ θ >=Δ θ occurs in continuous N time
The case where max, M are the natural number not less than 2, and the electric machine controller disconnects the power supply of the power module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810537506.4A CN108736447A (en) | 2018-05-30 | 2018-05-30 | New energy automobile motor and its angular transducer fault diagnosis and protection algorism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810537506.4A CN108736447A (en) | 2018-05-30 | 2018-05-30 | New energy automobile motor and its angular transducer fault diagnosis and protection algorism |
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| CN108736447A true CN108736447A (en) | 2018-11-02 |
Family
ID=63935911
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| CN201810537506.4A Pending CN108736447A (en) | 2018-05-30 | 2018-05-30 | New energy automobile motor and its angular transducer fault diagnosis and protection algorism |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112254626A (en) * | 2020-09-08 | 2021-01-22 | 上海贝思特门机有限公司 | Angular velocity fluctuation self-checking method for door machine motor rotor position sensor |
| CN116989827A (en) * | 2023-09-28 | 2023-11-03 | 深圳舜昌自动化控制技术有限公司 | Proximity sensor electromagnetic interference prevention method, device, equipment and storage medium |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112254626A (en) * | 2020-09-08 | 2021-01-22 | 上海贝思特门机有限公司 | Angular velocity fluctuation self-checking method for door machine motor rotor position sensor |
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| CN116989827A (en) * | 2023-09-28 | 2023-11-03 | 深圳舜昌自动化控制技术有限公司 | Proximity sensor electromagnetic interference prevention method, device, equipment and storage medium |
| CN116989827B (en) * | 2023-09-28 | 2023-12-19 | 深圳舜昌自动化控制技术有限公司 | Proximity sensor electromagnetic interference prevention method, device, equipment and storage medium |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20190308 Address after: Unit 1005, Room 101, Building 5, No. 2588 Wuzhong Avenue, Yuexi Street, Wuzhong Economic Development Zone, Suzhou City, Jiangsu Province Applicant after: Suzhou Game Energy Technology Co., Ltd. Address before: Room 502, No. 18, 229 Lane, Nanjiang Yan Road, Pujiang Town, Minhang District, Shanghai, 20114 Applicant before: Liu Shunpao |
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Application publication date: 20181102 |
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