CN106569076A - Asynchronous motor three-phase sequence misconnection detection system and method - Google Patents
Asynchronous motor three-phase sequence misconnection detection system and method Download PDFInfo
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- CN106569076A CN106569076A CN201510663336.0A CN201510663336A CN106569076A CN 106569076 A CN106569076 A CN 106569076A CN 201510663336 A CN201510663336 A CN 201510663336A CN 106569076 A CN106569076 A CN 106569076A
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- G—PHYSICS
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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Abstract
The invention discloses a system and a method for detecting the misconnection of three-phase sequences of an asynchronous motor, which are characterized in that an excitation signal with stable frequency and amplitude is provided for the asynchronous motor in advance, the excitation signal is equivalent to a test signal, a feedback current under the test signal is sampled, then vector conversion and rotation conversion are carried out on the feedback current, and whether the misconnection of the three-phase sequences of the asynchronous motor is carried out is judged according to a conversion result, so that the misconnection of the asynchronous motor in the working process, direct burning loss and even safety accidents can be avoided.
Description
Technical field
The present invention relates to Motor Control Field, more particularly to a kind of asynchronous machine three-phase phase-sequence misconnection detecting system
And method.
Background technology
With the popularization of new energy technology, asynchronous machine is widely used in the neck such as walking machine, fork truck, automobile
Domain,, during production assembling and use, there are strict requirements for the wiring of threephase cable, three-phase phase-sequence occurs for which
Misconnection, will directly affect the normal operation of product.If the asynchronous machine is V/F Schema controls, may
As three-phase phase-sequence misconnection occurs rotating and reverse reverse phenomenon, safe handling is affected.If the asynchronous electricity
Machine is vector controlled, then electric current, motor vibrating phenomenon occur because of three-phase phase-sequence misconnection so as to generate heat
Seriously, or even cannot normal rotation.
In prior art, can pass through to increase three-phase phase-sequence whether misconnection of the additional hardware to detect asynchronous machine,
But in actual product, it is contemplated that Cost Problems, all do not increase additional hardware on all asynchronous machines
To detect the whether misconnection of its three-phase phase-sequence, but wrong is prevented by being strict with wiring standard, this is not
It is avoided that due to human negligence and causes the phenomenon of wrong, once wrong, then need the fortune of artificial observation motor
Row situation, judges three-phase phase-sequence whether misconnection, and wiring is changed in misconnection carrys out solve problem.But this side
Method only leans on subjective judgment, needs the experience of personnel to enrich very much, can just solve a problem promptly, will otherwise cause
Motor is damaged, even personnel hazard.How to reduce detecting the asynchronous machine three-phase phase-sequence whether cost of misconnection,
It is technical problem urgently to be resolved hurrily at present.
The content of the invention
In view of this, the present invention proposes a kind of asynchronous machine three-phase misconnection detecting system and method, to reduce inspection
Survey the asynchronous machine three-phase phase-sequence whether cost of misconnection.
On the one hand, the invention provides a kind of asynchronous machine three-phase phase-sequence misconnection detecting system, including excitation letter
Number offer device, current signal sampling apparatuses and control device；
The pumping signal offer device, is connected with the asynchronous machine, for providing for the asynchronous machine
The pumping signal of frequency and amplitude stability；
The current signal sampling apparatuses, are connected with the current feedback terminal and the control device of the asynchronous machine
Connect, for gathering three-phase current signal of the asynchronous machine under the pumping signal, and by the three-phase
Current signal transfer is to the control device；
The control device, including：
Receiver module, is connected with the current signal sampling apparatuses, for receiving the three-phase current signal；
First conversion module, is connected with the receiver module, for carrying out vector to the three-phase current signal
Conversion, obtains vector result；
Second conversion module, is connected with first conversion module, for carrying out to the vector result
Rotation transformation, obtains rotation transformation result；
Judge module, is connected with second conversion module, for according to the rotation transformation result, judging
The whether misconnection of the three-phase phase-sequence of the asynchronous machine.
Further, the judge module, including：
First judging unit, judgment formula
Whether set up, if so, then judge that the three-phase phase-sequence of the asynchronous machine does not have misconnection；If not,
Then judge the three-phase phase-sequence misconnection of the asynchronous machine；
Wherein,For the rotation transformation result, I is the peak value of the three-phase current signal.
Further, the judge module, also including the second judging unit, in the asynchronous machine three
In the case of phase phase sequence misconnection, the misconnection type of asynchronous machine according to the rotation transformation result judgement.
Further, second judging unit, specifically for judgment formula
Whether set up, if so, then judge the misconnection type as, A phases that the pumping signal is produced with
C phase misconnections, the pumping signal of the B phases that the b phase misconnections of motor, the pumping signal are produced and motor
The a phase misconnections of the C phases of generation and motor；
If not, then judgment formula
Whether set up, if so, then judge the misconnection type as：The A phases that the pumping signal is produced with
A phase misconnections, the pumping signal of the B phases that the c phase misconnections of motor, the pumping signal are produced and motor
The b phase misconnections of the C phases of generation and motor；
If not, then judgment formula
Whether set up, if so, then judge the misconnection type as：The A phases that the pumping signal is produced with
A phase misconnections, the pumping signal of the B phases that the b phase misconnections of motor, the pumping signal are produced and motor
The C phases of generation are correctly connected with the c phases of motor；
If not, then judgment formula
Whether set up, if so, then judge the misconnection type as：The A phases that the pumping signal is produced with
The B phases that the c phase misconnections of motor, the pumping signal are produced correctly are connected with the b phases of motor, the excitation
The C phases of signal generation and a phase misconnections of motor；
If not, then judgment formula
Whether set up, if so, then judge the misconnection type as：The A phases that the pumping signal is produced with
The a phases of motor correctly connect, c phase misconnections, the excitation of B phases and the motor that the pumping signal is produced
The C phases of signal generation and the b phase misconnections of motor；
Wherein,For the rotation transformation result, I is the peak value of the three-phase current signal, w=2 π f.
Further, the frequency of the pumping signal less than the rated frequency of the asynchronous machine 50%, institute
The amplitude for stating pumping signal makes the three-phase current signal in the 5%-15% of the rated current of the asynchronous machine
In the range of.
On the other hand, present invention also offers a kind of asynchronous machine three-phase phase-sequence misconnection detection method, including step
Suddenly：
The pumping signal of frequency and amplitude stability is provided for the asynchronous machine；
Gather three-phase current signal of the asynchronous machine under the pumping signal；
Vector is carried out to the three-phase current signal, vector result is obtained；
Rotation transformation is carried out to the vector result, rotation transformation result is obtained；
According to the rotation transformation result, the three-phase phase-sequence whether misconnection of the asynchronous machine is judged.
Further, it is described according to the rotation transformation result, judge that the three-phase phase-sequence of the asynchronous machine is
The step of no misconnection, specially：Judgment formula
Whether set up, if so, then judge that the three-phase phase-sequence of the asynchronous machine does not have misconnection；If not,
Then judge the three-phase phase-sequence misconnection of the asynchronous machine；
Wherein,For the rotation transformation result, I is the peak value of the three-phase current signal.
Further, also including step：In the case of the asynchronous machine three-phase phase-sequence misconnection, according to institute
State the misconnection type of asynchronous machine described in rotation transformation result judgement.
Further, in the case of the asynchronous machine three-phase phase-sequence misconnection, tied according to the rotation transformation
The step of fruit judges the misconnection type of the asynchronous machine, specially：
Judgment formula
Whether set up, if so, then judge the misconnection type as, A phases that the pumping signal is produced with
C phase misconnections, the pumping signal of the B phases that the b phase misconnections of motor, the pumping signal are produced and motor
The a phase misconnections of the C phases of generation and motor；
If not, then judgment formula
Whether set up, if so, then judge the misconnection type as：The A phases that the pumping signal is produced with
A phase misconnections, the pumping signal of the B phases that the c phase misconnections of motor, the pumping signal are produced and motor
The b phase misconnections of the C phases of generation and motor；
If not, then judgment formula
Whether set up, if so, then judge the misconnection type as：The A phases that the pumping signal is produced with
A phase misconnections, the pumping signal of the B phases that the b phase misconnections of motor, the pumping signal are produced and motor
The C phases of generation are correctly connected with the c phases of motor；
If not, then judgment formula
Whether set up, if so, then judge the misconnection type as：The A phases that the pumping signal is produced with
The B phases that the c phase misconnections of motor, the pumping signal are produced correctly are connected with the b phases of motor, the excitation
The C phases of signal generation and a phase misconnections of motor；
If not, then judgment formula
Whether set up, if so, then judge the misconnection type as：The A phases that the pumping signal is produced with
The a phases of motor correctly connect, c phase misconnections, the excitation of B phases and the motor that the pumping signal is produced
The C phases of signal generation and the b phase misconnections of motor；
The order of the judgment formula step arbitrarily can be exchanged；
Wherein,For the rotation transformation result, I is the peak value of the three-phase current signal, w=2 π f.
Further, the frequency of the pumping signal less than the rated frequency of the asynchronous machine 50%, institute
The amplitude for stating pumping signal makes the three-phase current signal in the 5%-15% of the rated current of the asynchronous machine
In the range of.
Asynchronous machine three-phase phase-sequence misconnection detecting system and method that the present invention is provided, by giving asynchronous electricity in advance
Machine provides the pumping signal of a frequency and amplitude stability, equivalent to test signal, and the test signal of sampling
Under feedback current, then vector and rotation transformation are carried out to the feedback current, and are sentenced according to transformation results
The whether misconnection of the three-phase phase-sequence of disconnected asynchronous machine, is avoided that asynchronous machine misconnection at work, is directly burnt,
Security incident is caused even, the detecting system simple structure is convenient, with low cost.
Description of the drawings
The accompanying drawing for constituting the part of the present invention is used for providing a further understanding of the present invention, and the present invention's shows
Meaning property embodiment and its illustrated for explaining the present invention, does not constitute inappropriate limitation of the present invention.In accompanying drawing
In：
Fig. 1 is the schematic diagram of Vector Control System for Asynchronous Machine in prior art；
Fig. 2 is the structure chart of one embodiment of asynchronous machine three-phase phase-sequence misconnection detecting system of the present invention；
Fig. 3 is the knot of judge module one embodiment of asynchronous machine three-phase phase-sequence misconnection detecting system of the present invention
Composition；
Schematic diagrams of Fig. 4-Fig. 9 for the asynchronous machine three-phase mode of connection；
Figure 10 is the flow chart of one embodiment of asynchronous machine three-phase phase-sequence misconnection detection method of the present invention；
Figure 11 is the flow chart of another embodiment of asynchronous machine three-phase phase-sequence misconnection detection method of the present invention.
Specific embodiment
It should be noted that the embodiment and the feature in embodiment in the case where not conflicting, in the present invention
Can be mutually combined.Below with reference to the accompanying drawings and in conjunction with the embodiments describing the present invention in detail.
As shown in Figure 1, it is shown that a motor vector control system of the prior art.Within the system,
Input voltage is converted through 2R/2S, then the IGBT in SVPWM pulse generators control inverter
The turn-on and turn-off time, three-phase voltage is loaded onto in asynchronous machine.Below with the motor vector control system
As a example by, asynchronous machine three-phase phase-sequence misconnection detecting system of the present invention, the concrete motor vector control system are described in detail in detail
Example, not to the present invention range of application be construed as limiting, the present invention the misconnection of asynchronous machine three-phase phase-sequence inspection
Examining system, can be applicable in any type of electric machine control system.
As shown in Figure 2, it is shown that one embodiment of the invention, a kind of asynchronous machine three-phase phase-sequence misconnection detection
System, including pumping signal offer device 100, current signal sampling apparatuses 200 and control device 300.
Pumping signal offer device 100, the input voltage with the Vector Control System for Asynchronous Machine of Fig. 1 examples
End connection, for providing for asynchronous machine, frequency is f and amplitude is ud、uqStable pumping signal.And will
Current signal sampling apparatuses 200, are connected with its current feedback terminal, for gathering asynchronous machine in pumping signal
The three-phase current signal fed back under the pumping signal that offer device 100 is provided.The current signal collection device
200, also it is connected with control device 300, for the three-phase current signal of collection is transmitted to control device 300.
Control device 300, including：Receiver module 310, is connected with current signal sampling apparatuses 200, is used for
Receive three-phase current signal；First conversion module 320, is connected with receiver module 310, receives the three of sampling
Phase current signal, and vector is carried out to the three-phase current signal, obtain vector result；Second becomes
Mold changing block 330, is connected with the first conversion module 320, receives the vector knot of the first conversion module 320
Really, and to the vector result rotation transformation is carried out, obtains rotation transformation result；Judge module 340,
It is connected with the second conversion module 330, receives the rotation transformation result, and according to rotation transformation result, judges
The whether misconnection of the three-phase phase-sequence of asynchronous machine.
In this embodiment, a frequency is provided to asynchronous machine in advance by pumping signal offer device 100
With the pumping signal of amplitude stability, equivalent to test signal, and sampled by current signal sampling apparatuses 200
Feedback current input control device 300 under the test signal, 300 pairs of feedback currents of the control device enter
Row vector and rotation transformation, and the three-phase phase-sequence whether misconnection of asynchronous machine is judged according to transformation results,
Asynchronous machine misconnection at work is avoided, is directly burnt, or even cause security incident, the detecting system is tied
Structure is simple and convenient, with low cost.
Preferably, judge module 340, including：
First judging unit 341, judgment formula
Whether set up, if so, then judge that the three-phase phase-sequence of asynchronous machine does not have misconnection.If not, then
Judge the three-phase phase-sequence misconnection of asynchronous machine.
Wherein,For rotation transformation result, peak values of the I for three-phase current signal.
In this embodiment, the concrete structure of judge module 340 is given, which is detailed and is judged asynchronous machine
The three-phase phase-sequence whether concrete form of misconnection.Below, the three of asynchronous machine is judged to the judge module 340
Phase phase sequence whether verified by the effectiveness of the concrete form of misconnection.
It is assumed that asynchronous machine is f in the frequency that pumping signal offer device 100 is provided and amplitude is ud、uq
Stable pumping signal drive under, the three-phase current signal of the sampling of current signal sampling apparatuses 200 is：
Ia=Icos (wt)
Wherein, peak values of the I for three-phase current signal, w=2 π f,For three-phase current signal.
Then, if a, b, c three-phase of A, B, C three-phase of IGBT and motor does not have wrong, such as Fig. 4 institutes
Show, then according to vector formula, the vector result of the three-phase current signal is：
Further, according to rotation transformation formula, rotation transformation result is：
By by three-phase current signalWith vector resultRotation transformation result is substituted into, can be obtained：
So, if as shown in figure 4, a, b, c three-phase of A, B, C three-phase and motor of IGBT does not have
Wrong, then formula
Should set up, if not, then can determine that the three-phase phase-sequence misconnection of asynchronous machine.
It is more highly preferred to, as shown in figure 3, judge module 340, also including the second judging unit 342, is used for
In the case of asynchronous machine three-phase phase-sequence misconnection, according to the misconnection class of rotation transformation result judgement asynchronous machine
Type.
In this embodiment, judge module 340, also including the second judging unit 342, can be in asynchronous machine three
In the case of phase phase sequence misconnection, according to the misconnection type of rotation transformation result judgement asynchronous machine, teaching process
Which phase sequence wrong personnel, operator can quickly determine according to the misconnection type of asynchronous machine, and change should
A little wiring between phase IGBT and motor, rapidly solve the problems, such as phase sequence misconnection in time, and need not have no head
The wiring of the exploration three-phase of thread where wrong.
In more detail, the second judging unit 342, specifically for judgment formula
Whether set up, if so, misconnection type is then judged as the A that pumping signal as shown in Figure 5 is produced
The c phase misconnections of B phases and motor that the b phase misconnections, pumping signal with motor is produced, pumping signal are produced
C phases and motor a phase misconnections.
If not, then judgment formula
Whether set up, if so, then judge misconnection type as：The A that pumping signal as shown in Figure 6 is produced
The a phase misconnections of B phases and motor that the c phase misconnections, pumping signal with motor is produced, pumping signal are produced
C phases and motor b phase misconnections.
If not, then judgment formula
Whether set up, if so, then judge misconnection type as：The A that pumping signal as shown in Figure 7 is produced
The a phase misconnections of B phases and motor that the b phase misconnections, pumping signal with motor is produced, pumping signal are produced
C phases be correctly connected with the c phases of motor.
If not, then judgment formula
Whether set up, if so, then judge misconnection type as：The A that pumping signal as shown in Figure 8 is produced
The B phases that c phase misconnections, pumping signal with motor is produced correctly are connected with the b phases of motor, pumping signal
The a phase misconnections of the C phases of generation and motor.
If not, then judgment formula
Whether set up, if so, then judge misconnection type as：The A that pumping signal as shown in Figure 9 is produced
Correctly be connected with a phases of motor, pumping signal produce B phases and motor c phase misconnections, pumping signal
The b phase misconnections of the C phases of generation and motor.
Wherein,For rotation transformation result, peak values of the I for three-phase current signal, w=2 π f.
In this embodiment, give the concrete of the misconnection type that the second judging unit 342 judges asynchronous machine
Form.Below, the effectiveness of the concrete form is verified.
If as shown in figure 5, the b phase misconnections of the A phases and the motor that produce of pumping signal, pumping signal generation
B phases and a phase misconnections of the c phase misconnections, the C phases that pumping signal is produced and motor of motor, then understand, three
The rotation transformation result of phase current signal is：
If as shown in fig. 6, the c phase misconnections of the A phases and the motor that produce of pumping signal, pumping signal generation
B phases and the b phase misconnections of a phase misconnections, the C phases that pumping signal is produced and motor of motor, then understand, three
The rotation transformation result of phase current signal is：
If as shown in fig. 7, the b phase misconnections of the A phases and the motor that produce of pumping signal, pumping signal generation
B phases are correctly connected with the c phases of motor with a phase misconnections of motor, the C phases of pumping signal generation, then understand,
The rotation transformation result of three-phase current signal is：
If as shown in figure 8, the c phase misconnections of the A phases and the motor that produce of pumping signal, pumping signal generation
B phases are correctly connected with the b phases of motor, a phase misconnections of C phases and the motor that pumping signal is produced, then knowable to,
The rotation transformation result of three-phase current signal is：
If as shown in figure 9, the A phases that pumping signal is produced correctly are connected with a phases of motor, pumping signal is produced
The b phase misconnections of the c phase misconnections, the C phases that pumping signal is produced and motor of raw B phases and motor, then may be used
Know, the rotation transformation result of three-phase current signal is：
So, the second judging unit 342 can be simple and effective according to corresponding under the above-mentioned different modes of connection
Different rotary transformation results, judge the misconnection type of asynchronous machine.
Preferably, the frequency of pumping signal less than the rated frequency of asynchronous machine 50%, the width of pumping signal
Value makes three-phase current signal in the range of the 5%-15% of the rated current of asynchronous machine.
Make further preferred in this embodiment to the frequency and amplitude of pumping signal, can both avoid amplitude
It is too little, make feedback current too little, affect the accuracy of testing result, can avoid amplitude too big again, make asynchronous
Motor misoperation, or even scaling loss, cause security incident.It is more highly preferred to, the frequency of pumping signal, specifically
For 50Hz.
On the other hand, as shown in Figure 10, the present invention also provides a kind of asynchronous machine three-phase phase-sequence misconnection detection side
Method, including step：
S100：The pumping signal of frequency and amplitude stability is provided for asynchronous machine.
S200：Collection three-phase current signal of the asynchronous machine under pumping signal.
S300：Vector is carried out to three-phase current signal, vector result is obtained.
S400：Rotation transformation is carried out to vector result, rotation transformation result is obtained.
S500：According to rotation transformation result, the three-phase phase-sequence whether misconnection of asynchronous machine is judged.
Preferably, step S500, according to rotation transformation result, judges whether the three-phase phase-sequence of asynchronous machine misses
The step of connecing, specially：Judgment formula
Whether set up, if so, then judge that the three-phase phase-sequence of asynchronous machine does not have misconnection.If not, then
Judge the three-phase phase-sequence misconnection of asynchronous machine.
Wherein,For rotation transformation result, peak values of the I for three-phase current signal.
Preferably, asynchronous machine three-phase phase-sequence misconnection detection method, also including step：
S600：In the case of asynchronous machine three-phase phase-sequence misconnection, according to the asynchronous electricity of rotation transformation result judgement
The misconnection type of machine.
Preferably, step S600, in the case of asynchronous machine three-phase phase-sequence misconnection, ties according to rotation transformation
The step of fruit judges the misconnection type of asynchronous machine, specially：
Judgment formula
Whether set up, if so, misconnection type is then judged as A phases and the b of motor that pumping signal is produced
The c phase misconnections of B phases and motor that phase misconnection, pumping signal are produced, the C phases of pumping signal generation and motor
A phase misconnections.
If not, then judgment formula
Whether set up, if so, then judge misconnection type as：A phases and the c of motor that pumping signal is produced
The a phase misconnections of B phases and motor that phase misconnection, pumping signal are produced, the C phases of pumping signal generation and motor
B phase misconnections.
If not, then judgment formula
Whether set up, if so, then judge misconnection type as：A phases and the b of motor that pumping signal is produced
The a phase misconnections of B phases and motor that phase misconnection, pumping signal are produced, the C phases of pumping signal generation and motor
C phases correctly connect.
If not, then judgment formula
Whether set up, if so, then judge misconnection type as：A phases and the c of motor that pumping signal is produced
Phase misconnection, pumping signal produce B phases correctly be connected with the b phases of motor, pumping signal generation C phases and
The a phase misconnections of motor.
If not, then judgment formula
Whether set up, if so, then judge misconnection type as：A phases and a of motor that pumping signal is produced
C phases that the c phase misconnections of the B phases that mutually correct connection, pumping signal are produced and motor, pumping signal are produced and
The b phase misconnections of motor.
Wherein,For rotation transformation result, peak values of the I for three-phase current signal, w=2 π f.
It is noted that the embodiment only provides example, the order of the judgment formula step is not limited
Fixed, the order of above-mentioned judgment formula step arbitrarily can be exchanged.
Preferably, the frequency of pumping signal less than the rated frequency of asynchronous machine 50%, the width of pumping signal
Value makes three-phase current signal in the range of the 5%-15% of the rated current of asynchronous machine.
Above asynchronous machine three-phase phase-sequence misconnection detection method and asynchronous machine three-phase phase-sequence misconnection detecting system pair
Should, its specific embodiment and technique effect will not be described here.The foregoing is only the preferable of the present invention
Embodiment, not to limit the present invention, it is all within the spirit and principles in the present invention, made appoint
What modification, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of asynchronous machine three-phase phase-sequence misconnection detecting system, it is characterised in that provide including pumping signal
Device, current signal sampling apparatuses and control device；
The pumping signal offer device, is connected with the asynchronous machine, for providing for the asynchronous machine
The pumping signal of frequency and amplitude stability；
The current signal sampling apparatuses, are connected with the current feedback terminal and the control device of the asynchronous machine
Connect, for gathering three-phase current signal of the asynchronous machine under the pumping signal, and by the three-phase
Current signal transfer is to the control device；
The control device, including：
Receiver module, is connected with the current signal sampling apparatuses, for receiving the three-phase current signal；
First conversion module, is connected with the receiver module, for carrying out vector to the three-phase current signal
Conversion, obtains vector result；
Second conversion module, is connected with first conversion module, for carrying out to the vector result
Rotation transformation, obtains rotation transformation result；
Judge module, is connected with second conversion module, for according to the rotation transformation result, judging
The whether misconnection of the three-phase phase-sequence of the asynchronous machine.
2. asynchronous machine three-phase phase-sequence misconnection detecting system according to claim 1, it is characterised in that
The judge module, including：
First judging unit, judgment formula
Whether set up, if so, then judge that the three-phase phase-sequence of the asynchronous machine does not have misconnection；If not,
Then judge the three-phase phase-sequence misconnection of the asynchronous machine；
Wherein, For the rotation transformation result, I is the peak value of the three-phase current signal.
3. asynchronous machine three-phase phase-sequence misconnection detecting system according to claim 2, it is characterised in that
The judge module, also including the second judging unit, for the feelings in the asynchronous machine three-phase phase-sequence misconnection
Under condition, the misconnection type of asynchronous machine according to the rotation transformation result judgement.
4. asynchronous machine three-phase phase-sequence misconnection detecting system according to claim 3, it is characterised in that
Second judging unit, specifically for judgment formula
Whether set up, if so, then judge the misconnection type as, A phases that the pumping signal is produced with
C phase misconnections, the pumping signal of the B phases that the b phase misconnections of motor, the pumping signal are produced and motor
The a phase misconnections of the C phases of generation and motor；
If not, then judgment formula
Whether set up, if so, then judge the misconnection type as：The A phases that the pumping signal is produced with
A phase misconnections, the pumping signal of the B phases that the c phase misconnections of motor, the pumping signal are produced and motor
The b phase misconnections of the C phases of generation and motor；
If not, then judgment formula
Whether set up, if so, then judge the misconnection type as：The A phases that the pumping signal is produced with
A phase misconnections, the pumping signal of the B phases that the b phase misconnections of motor, the pumping signal are produced and motor
The C phases of generation are correctly connected with the c phases of motor；
If not, then judgment formula
Whether set up, if so, then judge the misconnection type as：The A phases that the pumping signal is produced with
The B phases that the c phase misconnections of motor, the pumping signal are produced correctly are connected with the b phases of motor, the excitation
The C phases of signal generation and a phase misconnections of motor；
If not, then judgment formula
Whether set up, if so, then judge the misconnection type as：The A phases that the pumping signal is produced with
The a phases of motor correctly connect, c phase misconnections, the excitation of B phases and the motor that the pumping signal is produced
The C phases of signal generation and the b phase misconnections of motor；
Wherein, For the rotation transformation result, I is the peak value of the three-phase current signal, w=2 π f.
5. the asynchronous machine three-phase phase-sequence misconnection detecting system according to claim 1-4 any one, its
It is characterised by, the frequency of the pumping signal is less than the 50% of the rated frequency of the asynchronous machine, described to swash
The amplitude for encouraging signal makes the three-phase current signal in the 5%-15% scopes of the rated current of the asynchronous machine
It is interior.
6. a kind of asynchronous machine three-phase phase-sequence misconnection detection method, it is characterised in that including step：
The pumping signal of frequency and amplitude stability is provided for the asynchronous machine；
Gather three-phase current signal of the asynchronous machine under the pumping signal；
Vector is carried out to the three-phase current signal, vector result is obtained；
Rotation transformation is carried out to the vector result, rotation transformation result is obtained；
According to the rotation transformation result, the three-phase phase-sequence whether misconnection of the asynchronous machine is judged.
7. asynchronous machine three-phase phase-sequence misconnection detection method according to claim 6, it is characterised in that
It is described according to the rotation transformation result, judge the three-phase phase-sequence of the asynchronous machine whether misconnection the step of,
Specially：Judgment formula
Whether set up, if so, then judge that the three-phase phase-sequence of the asynchronous machine does not have misconnection；If not,
Then judge the three-phase phase-sequence misconnection of the asynchronous machine；
Wherein, For the rotation transformation result, I is the peak value of the three-phase current signal.
8. asynchronous machine three-phase phase-sequence misconnection detection method according to claim 7, it is characterised in that
Also include step：In the case of the asynchronous machine three-phase phase-sequence misconnection, according to the rotation transformation result
Judge the misconnection type of the asynchronous machine.
9. asynchronous machine three-phase phase-sequence misconnection detection method according to claim 8, it is characterised in that
It is in the case of the asynchronous machine three-phase phase-sequence misconnection, asynchronous according to the rotation transformation result judgement
The step of misconnection type of motor, specially：
Judgment formula
Whether set up, if so, then judge the misconnection type as, A phases that the pumping signal is produced with
C phase misconnections, the pumping signal of the B phases that the b phase misconnections of motor, the pumping signal are produced and motor
The a phase misconnections of the C phases of generation and motor；
If not, then judgment formula
Whether set up, if so, then judge the misconnection type as：The A phases that the pumping signal is produced with
A phase misconnections, the pumping signal of the B phases that the c phase misconnections of motor, the pumping signal are produced and motor
The b phase misconnections of the C phases of generation and motor；
If not, then judgment formula
Whether set up, if so, then judge the misconnection type as：The A phases that the pumping signal is produced with
A phase misconnections, the pumping signal of the B phases that the b phase misconnections of motor, the pumping signal are produced and motor
The C phases of generation are correctly connected with the c phases of motor；
If not, then judgment formula
Whether set up, if so, then judge the misconnection type as：The A phases that the pumping signal is produced with
The B phases that the c phase misconnections of motor, the pumping signal are produced correctly are connected with the b phases of motor, the excitation
The C phases of signal generation and a phase misconnections of motor；
If not, then judgment formula
Whether set up, if so, then judge the misconnection type as：The A phases that the pumping signal is produced with
The a phases of motor correctly connect, c phase misconnections, the excitation of B phases and the motor that the pumping signal is produced
The C phases of signal generation and the b phase misconnections of motor；
The order of the judgment formula step arbitrarily can be exchanged；
Wherein, For the rotation transformation result, I is the peak value of the three-phase current signal, w=2 π f.
10. the asynchronous machine three-phase phase-sequence misconnection detection method according to claim 6-9 any one,
Characterized in that, the frequency of the pumping signal is less than the 50% of the rated frequency of the asynchronous machine, it is described
The amplitude of pumping signal makes the three-phase current signal in the 5%-15% models of the rated current of the asynchronous machine
In enclosing.
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