CN109975647A - A kind of motor winding open circuit On-line self-diagnosis method of triangular form connection - Google Patents
A kind of motor winding open circuit On-line self-diagnosis method of triangular form connection Download PDFInfo
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- CN109975647A CN109975647A CN201910333868.6A CN201910333868A CN109975647A CN 109975647 A CN109975647 A CN 109975647A CN 201910333868 A CN201910333868 A CN 201910333868A CN 109975647 A CN109975647 A CN 109975647A
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- bridge arm
- switching tube
- arm switching
- motor
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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
- G01R31/346—Testing of armature or field windings
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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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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Abstract
The present invention provides a kind of motor winding open circuit On-line self-diagnosis method of triangular form connection, self checking method is in motor inoperative and the when progress that remains static, specifically includes the following steps: opening upper bridge arm switching tube Q1 and lower bridge arm switching tube Q4, by presetting delay time post-sampling main circuit current value, the first winding open circuit of motor is judged if main circuit current value is less than predetermined current threshold value and is alarmed, and all upper and lower bridge arm switching tubes of shutdown, self-check program stop；If main circuit current value is more than or equal to predetermined current threshold value, then turn off all upper and lower bridge arm switching tubes, then upper bridge arm switching tube Q3 and lower bridge arm switching tube Q6 is opened respectively and opens upper bridge arm switching tube Q5 and lower bridge arm switching tube Q2, completes the judgement to remaining winding open circuit according to the identical method of aforementioned judgement the first phase of motor group open circuit.The motor winding open circuit On-line self-diagnosis method of this triangular form connection is simple and fast but also with higher reliability.
Description
Technical field
The present invention relates to drive and control of electric machine technical fields, and in particular to a kind of motor winding open circuit of triangular form connection
On-line self-diagnosis method.
Background technique
The present inventor has found that existing Electronic control technology is electronic for triangular form (i.e. △) connection after study
The detection of machine winding open circuit fault mostly uses greatly offline mode to carry out, and online test method is less and mostly complex, lacks
Weary convenience and reliability, thus need to solve this problem.
Summary of the invention
The detection of the motor winding open circuit fault of triangular form connection is mostly used greatly for existing Electronic control technology
The technical issues of offline mode carries out, and online test method is less and mostly complex, lacks convenience and reliability, this
Invention provides a kind of motor winding open circuit On-line self-diagnosis method of triangular form connection.
In order to solve the above-mentioned technical problem, present invention employs the following technical solutions:
A kind of motor winding open circuit On-line self-diagnosis method of triangular form connection, the self checking method are suitable for three-phase bridge
The triangular form connection motor of driving uses a kind of three-phase bridge drive control circuit, the driving in the self checking method
Control circuit include DC power supply, bridge circuit, microprocessor, the current sensor being connected with microprocessor input and with it is micro-
The connected driving circuit of processor output end, the bridge circuit include upper bridge arm switching tube Q1, Q3 and Q5 and lower bridge arm switch
Pipe Q2, Q4 and Q6, the first main electrode of described switching tube Q1, Q3 and Q5 and the anode of DC power supply connect, the switching tube Q1
The second main electrode and the first main electrode of switching tube Q2 connect with one end of the first winding of motor and the tertiary winding, institute
First main electrode of the second main electrode and switching tube Q4 of stating switching tube Q3 with the other end of the first winding of motor and
One end of two windings connects, the first main electrode of the second main electrode of the switching tube Q5 and switching tube Q6 with motor the
Two windings are connected with the other end of the tertiary winding, and the second main electrode of described switching tube Q2, Q4 and Q6 are through current sensor and directly
The cathode in galvanic electricity source connects, and the control electrode of described switching tube Q1, Q3, Q5, Q2, Q4 and Q6 are described by driving circuit drive control
Self checking method in motor inoperative and the when progress that remains static, the self checking method the following steps are included:
Bridge arm switching tube Q1 and lower bridge arm switching tube Q4 on S1, opening, by current sensor after default delay time
Main circuit current value at this time is sampled, if main circuit current value is less than electric current threshold value, judges the first winding open circuit of motor
And warning note being carried out, and turn off all upper and lower bridge arm switching tubes, self-check program stops；
If S2, main circuit current value are more than or equal to electric current threshold value, all upper and lower bridge arm switching tubes are turned off, are then opened
Upper bridge arm switching tube Q3 and lower bridge arm switching tube Q6, by current sensor sampling, major loop is electric at this time after default delay time
Flow valuve judges that the second winding of motor is breaking and carries out warning note if main circuit current value is less than electric current threshold value, and
All upper and lower bridge arm switching tubes are turned off, self-check program stops；
If S3, main circuit current value are more than or equal to electric current threshold value, all upper and lower bridge arm switching tubes are turned off, are then opened
Upper bridge arm switching tube Q5 and lower bridge arm switching tube Q2, by current sensor sampling, major loop is electric at this time after default delay time
Flow valuve judges that the tertiary winding of motor is breaking and carries out warning note if main circuit current value is less than electric current threshold value, and
All upper and lower bridge arm switching tubes are turned off, self-check program stops；If main circuit current value is more than or equal to electric current threshold value, institute is turned off
There is upper and lower bridge arm switching tube, exits self-check program.
Compared with prior art, the motor winding open circuit On-line self-diagnosis method of triangular form connection provided by the invention, it is first
Upper bridge arm switching tube Q1 and lower bridge arm switching tube Q4 is first opened, by presetting delay time post-sampling main circuit current value, if main
Loop current value is less than the first winding open circuit that electric current threshold value then judges motor, i.e., theoretically illustrates in the default delay
Main circuit current value does not rise to electric current threshold value in time, it follows that is the first winding open circuit institute by motor
It causes, need to turn off all upper and lower bridge arm switching tubes at this time and stops self-check program and carry out warning note, motor is forbidden to enter
Program is run, avoids failure propagation that user is further waited to handle；If main circuit current value is more than or equal to electric current threshold
Value then illustrates that the first winding of motor without open circuit, i.e., theoretically illustrates to preset main circuit current value in delay time at this
Electric current threshold value has been risen to, bridge arm switching tube Q3 and lower bridge arm switching tube Q6 have then been opened again, according to aforementioned judgment method
The detection to motor the second winding open circuit is completed to judge；Finally bridge arm switching tube Q5 and lower bridge arm switching tube Q2 are opened again,
The detection to motor tertiary winding open circuit is completed also according to aforementioned judgment method to judge.It follows that provided by the present application
Self checking method is simple and fast, while but also with higher reliability, can realize to motor winding open circuit fault effectively online
Detection.
Further, delay time is preset in the step S1~S3 to be calculated using following formula:
Wherein, T is default delay time, and G is the total inductance of major loop, ImFor the major loop after default delay time T
Theoretical current value, U are direct current power source voltage.
Further, it is 312 μ s that delay time is preset in the step S1~S3.
Further, electric current threshold value is calculated using following formula in the step S1~S3:
Wherein, T is default delay time, and U is direct current power source voltage, and G is the total inductance of major loop, ImTo prolong by default
When time T after major loop theoretical current value, I0For the quiescent current of major loop after all upper and lower bridge arm switching tubes of closing, I is
Electric current threshold value.
Detailed description of the invention
Fig. 1 is a kind of drive control structural representation of three-phase bridge driving triangular form connection motor provided by the invention
Figure.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Conjunction is specifically illustrating, and the present invention is further explained.
In the description of the present invention, it is to be understood that, term " longitudinal direction ", " radial direction ", " length ", " width ", " thickness ",
The orientation of the instructions such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" or
Positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplification of the description, without
It is that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore not
It can be interpreted as limitation of the present invention.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or two
More than.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
It please refers to shown in Fig. 1, the present invention provides a kind of motor winding open circuit On-line self-diagnosis method of triangular form connection, institute
The triangular form connection motor that self checking method is suitable for three-phase bridge driving is stated, uses a kind of three-phase bridge in the self checking method
Formula drive control circuit, the drive control circuit include that DC power supply, bridge circuit, microprocessor and microprocessor input
Driving end connected current sensor R1 and be connected with output end of microprocessor, the bridge circuit includes upper bridge arm switching tube
Q1, Q3 and Q5 and lower bridge arm switching tube Q2, Q4 and Q6, the first main electrode of described switching tube Q1, Q3 and Q5 and DC power supply
The first main electrode of anode connection, the second main electrode of the switching tube Q1 and switching tube Q2 with the first winding L1 of motor
Connected with one end of tertiary winding L3, the first main electrode of the second main electrode of the switching tube Q3 and switching tube Q4 with it is electronic
One end connection of the other end and the second winding L2 of first winding L1 of machine, the second main electrode of source and switch of the switching tube Q5
The first main electrode of pipe Q6 is connect with the other end of the second winding L2 of motor and tertiary winding L3, the switching tube Q2,
The source electrode of Q4 and Q6 is connected through the cathode of current sensor R1 and DC power supply, described switching tube Q1, Q3, Q5, Q2, Q4 and Q6's
Control electrode is connected by driving circuit drive control, i.e., the control electrode of described switching tube Q1, Q3, Q5, Q2, Q4 and Q6 with driving circuit
Connect, the self checking method in motor inoperative and the when progress that remains static, the self checking method the following steps are included:
Bridge arm switching tube Q1 and lower bridge arm switching tube Q4 on S1, opening, by current sensor after default delay time
R1 samples main circuit current value at this time, and main circuit current at this time can be specifically calculated by the voltage on current sensor R1
Value judges that the first winding L1 of motor is breaking and carries out warning note if main circuit current value is less than electric current threshold value, and
All upper and lower bridge arm switching tubes are turned off, self-check program stops；
If S2, main circuit current value are more than or equal to electric current threshold value, all upper and lower bridge arm switching tubes are turned off, are then opened
Upper bridge arm switching tube Q3 and lower bridge arm switching tube Q6, by current sensor sampling, major loop is electric at this time after default delay time
Flow valuve judges that the second winding L2 of motor is breaking and carries out warning note if main circuit current value is less than electric current threshold value,
And all upper and lower bridge arm switching tubes of shutdown, self-check program stop；
If S3, main circuit current value are more than or equal to electric current threshold value, all upper and lower bridge arm switching tubes are turned off, are then opened
Upper bridge arm switching tube Q5 and lower bridge arm switching tube Q2, by current sensor sampling, major loop is electric at this time after default delay time
Flow valuve judges that the tertiary winding L3 of motor is breaking and carries out warning note if main circuit current value is less than electric current threshold value,
And all upper and lower bridge arm switching tubes of shutdown, self-check program stop；If main circuit current value is more than or equal to electric current threshold value, turn off
All upper and lower bridge arm switching tubes, exit self-check program.
Compared with prior art, the motor winding open circuit On-line self-diagnosis method of triangular form connection provided by the invention, it is first
Upper bridge arm switching tube Q1 and lower bridge arm switching tube Q4 is first opened, by presetting delay time post-sampling main circuit current value, if main
Loop current value is less than the first winding open circuit that electric current threshold value then judges motor, i.e., theoretically illustrates in the default delay
Main circuit current value does not rise to electric current threshold value in time, it follows that is the first winding open circuit institute by motor
It causes, need to turn off all upper and lower bridge arm switching tubes at this time and stops self-check program and carry out warning note, motor is forbidden to enter
Program is run, avoids failure propagation that user is further waited to handle；If main circuit current value is more than or equal to electric current threshold
Value then illustrates that the first winding of motor without open circuit, i.e., theoretically illustrates to preset main circuit current value in delay time at this
Electric current threshold value has been risen to, bridge arm switching tube Q3 and lower bridge arm switching tube Q6 have then been opened again, according to aforementioned judgment method
The detection to motor the second winding open circuit is completed to judge；Finally bridge arm switching tube Q5 and lower bridge arm switching tube Q2 are opened again,
The detection to motor tertiary winding open circuit is completed also according to aforementioned judgment method to judge.It follows that provided by the present application
Self checking method is simple and fast, while but also with higher reliability, can realize to motor winding open circuit fault effectively online
Detection.
As specific embodiment, the microprocessor uses the single-chip microcontroller of model STM32F051R6T6, the driving electricity
Road is available circuit well known to those skilled in the art, and the switching tube Q1~Q6 is NMOS power switch tube；Certainly, this field
Technical staff on this basis, can also be realized using other switching tube such as triodes, silicon-controlled, IGBT pipe etc..
It further include that motor is forbidden to enter fortune when self-check program stops in the step S1~S3 as specific embodiment
Line program waits the step of user's processing, i.e., when breaking alarming occurs in the winding of motor, needs to turn off all upper and lower bridge arms
Switching tube simultaneously stops self-check program, and motor is forbidden to enter operation program, need to wait user at this time confirm specifically which
There is open circuit fault in phase sequence winding, to eliminate open circuit fault in time.
Delay time is preset as specific embodiment, in the step S1~S3 to be calculated using following formula:
Wherein, T is default delay time, and G is the total inductance of major loop, ImFor the major loop after default delay time T
Theoretical current value, U are direct current power source voltage.
As specific embodiment, electric current threshold value is calculated using following formula in the step S1~S3:
Wherein, T is default delay time, and U is direct current power source voltage, and G is the total inductance of major loop, as motor running
Winding inductance is total with major loop inductance, specifically can be by calculating or surveying acquisition, ImFor after default delay time T
Major loop theoretical current value, I0For the quiescent current of major loop after all upper and lower bridge arm switching tubes of closing, I is electric current threshold
Value.
Wherein, the major loop theoretical current value I after default delay time TmValue must simultaneously meet following principle:
The first, ImValue will be significantly more than the quiescent current I of major loop after all upper and lower bridge arm switching tubes of closing0, and be more than
The enough current sampling systems of amplitude are differentiated；
The second, ImValue is not to make motor shake and the operational shock upper limit occur；
Third, ImThe maximum power that value is allowed using bridge-type driving switch device is the upper limit.
As an implementation, if certain three-phase bridge drive star-like dc motor major loop total inductance survey be
5mH, the quiescent current (after closing all switching tubes) of control system major loop are 0.1A, the upper limit of the power electricity of switching tube used
Stream is 200A, and the voltage of DC power supply is 48V, confirms through repetition test: adding the electric current of 3A not will cause electricity on motor in short-term
Motivation is obviously shaken and operational shock, then can use Im=3A
Default delay time:
Electric current threshold value:
Certainly, those skilled in the art can also according to actual needs, by the default delay time T in aforementioned embodiments
Value is 312 μ s, electric current threshold value value 1A or so.
As a preferred embodiment, it is 312 μ s that delay time is preset in the step S1~S3, if default delay time mistake
It is long, it may be such that electric current rising value is excessive and cause system operational shock；If default delay time is too short, electricity may be such that
Rising value is too small that main circuit current value is caused not rise to electric current threshold value also for stream.Thus, default delay time is set as 312 μ
S will not cause to impact, self checking method has been effectively ensured to electric motor system again on the basis of guaranteeing that machine winding can be connected to
Reliability.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the scope of the claims of invention.
Claims (4)
1. a kind of motor winding open circuit On-line self-diagnosis method of triangular form connection, which is characterized in that the self checking method is applicable in
A kind of three-phase bridge drive control electricity is used in the triangular form connection motor of three-phase bridge driving, the self checking method
Road, the drive control circuit include DC power supply, bridge circuit, microprocessor, the electric current being connected with microprocessor input
Sensor and the driving circuit being connected with output end of microprocessor, the bridge circuit include upper bridge arm switching tube Q1, Q3 and Q5
And lower bridge arm switching tube Q2, Q4 and Q6, the first main electrode of described switching tube Q1, Q3 and Q5 and the anode of DC power supply connect,
The second main electrode of the switching tube Q1 and the first main electrode of switching tube Q2 with the first winding and the tertiary winding of motor
One end connection, the first main electrode of the second main electrode of the switching tube Q3 and switching tube Q4 with the first winding of motor
The other end and the second winding one end connection, the second main electrode of the switching tube Q5 and the first main electrode of switching tube Q6 are equal
It is connect with the other end of the second winding of motor and the tertiary winding, the second main electrode of described switching tube Q2, Q4 and Q6 are through electricity
The connection of the cathode of flow sensor and DC power supply, the control electrode of described switching tube Q1, Q3, Q5, Q2, Q4 and Q6 are driven by driving circuit
Dynamic control, the self checking method is in motor inoperative and the when progress that remains static, the self checking method include following step
It is rapid:
Bridge arm switching tube Q1 and lower bridge arm switching tube Q4 on S1, opening is sampled after default delay time by current sensor
Main circuit current value at this time judges that the first winding open circuit of motor is gone forward side by side if main circuit current value is less than electric current threshold value
Row warning note, and all upper and lower bridge arm switching tubes are turned off, self-check program stops；
If S2, main circuit current value are more than or equal to electric current threshold value, all upper and lower bridge arm switching tubes are turned off, then open upper bridge
Arm switch pipe Q3 and lower bridge arm switching tube Q6 samples main circuit current at this time by current sensor after default delay time
Value judges the second winding open circuit of motor and carries out warning note, and close if main circuit current value is less than electric current threshold value
Break all upper and lower bridge arm switching tubes, and self-check program stops；
If S3, main circuit current value are more than or equal to electric current threshold value, all upper and lower bridge arm switching tubes are turned off, then open upper bridge
Arm switch pipe Q5 and lower bridge arm switching tube Q2 samples main circuit current at this time by current sensor after default delay time
Value judges the tertiary winding open circuit of motor and carries out warning note, and close if main circuit current value is less than electric current threshold value
Break all upper and lower bridge arm switching tubes, and self-check program stops；If main circuit current value is more than or equal to electric current threshold value, shutdown is all
Upper and lower bridge arm switching tube, exits self-check program.
2. the motor winding open circuit On-line self-diagnosis method of triangular form connection according to claim 1, which is characterized in that institute
Default delay time in step S1~S3 is stated to be calculated using following formula:
Wherein, T is default delay time, and G is the total inductance of major loop, ImFor the theoretical electricity of major loop after default delay time T
Flow valuve, U are direct current power source voltage.
3. the motor winding open circuit On-line self-diagnosis method of triangular form connection according to claim 1, which is characterized in that institute
Stating and presetting delay time in step S1~S3 is 312 μ s.
4. the motor winding open circuit On-line self-diagnosis method of triangular form connection according to claim 1, which is characterized in that institute
Electric current threshold value in step S1~S3 is stated to be calculated using following formula:
Wherein, T is default delay time, and U is direct current power source voltage, and G is the total inductance of major loop, ImWhen for by default delay
Between major loop theoretical current value after T, I0For the quiescent current of major loop after all upper and lower bridge arm switching tubes of closing, I is electric current
Threshold value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910333868.6A CN109975647B (en) | 2019-04-24 | 2019-04-24 | Triangle connection type motor winding open circuit on-line self-checking method |
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| CN201910333868.6A CN109975647B (en) | 2019-04-24 | 2019-04-24 | Triangle connection type motor winding open circuit on-line self-checking method |
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| CN109975647B CN109975647B (en) | 2021-06-11 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975648A (en) * | 2019-04-24 | 2019-07-05 | 重庆理工大学 | A kind of motor bridge circuit power switch tube short circuit online test method |
| CN112415378A (en) * | 2019-08-19 | 2021-02-26 | 顺丰科技有限公司 | Motor circuit break detection system, unmanned aerial vehicle and motor circuit break detection method |
| CN113030783A (en) * | 2021-02-23 | 2021-06-25 | 深圳市显控科技股份有限公司 | Servo motor broken line detection method, system and storage medium |
| WO2022094894A1 (en) * | 2020-11-05 | 2022-05-12 | 深圳市大疆创新科技有限公司 | Testing method, control, electronic speed control, power apparatus, and movable platform for electric motor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975648A (en) * | 2019-04-24 | 2019-07-05 | 重庆理工大学 | A kind of motor bridge circuit power switch tube short circuit online test method |
| CN112415378A (en) * | 2019-08-19 | 2021-02-26 | 顺丰科技有限公司 | Motor circuit break detection system, unmanned aerial vehicle and motor circuit break detection method |
| WO2022094894A1 (en) * | 2020-11-05 | 2022-05-12 | 深圳市大疆创新科技有限公司 | Testing method, control, electronic speed control, power apparatus, and movable platform for electric motor |
| CN113030783A (en) * | 2021-02-23 | 2021-06-25 | 深圳市显控科技股份有限公司 | Servo motor broken line detection method, system and storage medium |
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| CN109975647B (en) | 2021-06-11 |
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