CN104579099B - Four-phase electrical-excitation double-salient-pole motor and open-circuit fault diagnosis method thereof - Google Patents
Four-phase electrical-excitation double-salient-pole motor and open-circuit fault diagnosis method thereof Download PDFInfo
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Abstract
The invention provides a four-phase electrical-excitation double-salient-pole motor and an open-circuit fault diagnosis method of the four-phase electrical-excitation double-salient-pole motor. According to the method, the middle points of two channels are provided with detection resistors, detection voltage of the resistor is sampled, fault features are extracted, and the fault types are diagnosed. If the voltage of the detection resistor is always a negative value when the electrical angle is larger than 0 degree and smaller than or equal to 180 degrees, and the voltage of the detection resistor is always a positive value when the electrical angle is larger than 180 degrees and smaller than or equal to 360 degrees, the A-phase open-circuit fault can be judged; if the voltage of the detection resistor is always a negative value when the electrical angle is larger than 0 degree and smaller than or equal to 180 degrees, and the voltage of the detection resistor is not always a positive value when the electrical angle is larger than 180 degrees and smaller than or equal to 360 degrees, and the open-circuit fault of a pipe (Q1) on the A phase is judged; the rest can be done in the same manner. The fault diagnosis method is simple in control process and free of complex operation, and the positions of the single-pipe open-circuit fault and the single-phase open-circuit fault can be diagnosed by sampling one voltage signal. The method can be further applied and popularized to four-phase brushless direct-current motors.
Description
Technical field
The present invention relates to a kind of four phase electric excitation biconvex electrode electric machines and its open fault diagnostic method, belong to electrical fault and examine
Disconnected technical field.
Background technology
Double salient-pole electric machine is a kind of by position sensor, electronic power converter, permanent magnetism or electromagnetism Energizing unit, control
The new-type motor of the motor body composition of device processed and salient pole stator and rotor sructure.As a kind of new variable reluctance motor, its magnetic resistance
Maximum and minimum of a value ratio are big, have more preferable energy converting between mechanical characteristic, have preferable application prospect in all trades and professions.Four
Phase electric excitation biconvex electrode electric machine has four phase windings, and after there is single-phase fault, remaining each phase still can work, therefore very
It is suitable as fault-tolerant motor, in the application of high reliability application scenario.
Accurately and timely diagnostic techniques is the premise that fault-tolerant motor realizes fault tolerance." Proceedings of the CSEE "
2009 the 33rd phase paper " double salient-pole electric machine full-bridge converter single tube open fault inline diagnosis " propose a kind of using neutral
The method that variation characteristic before and after fault for the point voltage carries out fault diagnosis, and carried out experimental verification.But the method is only capable of
Diagnosis research for the single tube open fault of three phase electric machine.Also scholar is had to propose using the fuzzy control based on model both at home and abroad
It is directed under particular motor drive system normally with genetic algorithm and failure operation state carries out Characteristic Extraction, realize electrical fault
Diagnosis, the method realizes relative difficulty and complexity, and is difficult to fault real-time diagnosis.
Content of the invention
Technical problem to be solved:
A kind of four phase electric excitation biconvex electrode electric machines disclosed by the invention and its open fault diagnostic method, the only event to setting
The voltage of barrier detection resistance is sampled and is extracted fault signature it is adaptable to four phase four the single-phase of phase electric excitation biconvex electrode electric machine opens
Road and the diagnosis of single tube open fault.
Technical scheme:
In order to realize function above, the invention provides a kind of four phase electric excitation biconvex electrode electric machines it is characterised in that: this electricity
Machine includes a phase winding, b phase winding, c phase winding, d phase winding, four phase full-bridge converters and detection resistance (r)；Four phases of motor
Winding is divided into two passages according to the difference of phase place, and the midpoint of two passages is connected with detection resistance (r)；Described motor is additionally provided with
Controller, described controller is sampled to the voltage of detection resistance and is extracted fault signature, to be diagnosed to be the failure classes of generation
Type；
Four phase windings of described motor are divided into two passages according to the difference of phase place, refer specifically to a phase winding and c phase winding is anti-
It is connected on the midpoint of pipe q5 and c phase down tube q6 on the midpoint of pipe q1 and a phase down tube q2 and c phase in a phase, composition one respectively to after series connection
Individual passage；It is connected on respectively after b phase winding and d phase winding differential concatenation and manage in the midpoint of pipe q3 and b phase down tube q4 and d phase in b phase
The midpoint of q7 and d phase down tube q8, forms another passage.
A kind of four phase electric excitation biconvex electrode electric machine open fault diagnostic methods it is characterised in that: this diagnostic method specifically walks
Suddenly as follows: for weighing above-mentioned four phase electric excitation biconvex electrode electric machines, this diagnostic method specifically comprises the following steps that
If the electrical angle when mutual inductance of a phase winding and Exciting Windings for Transverse Differential Protection begins to ramp up is 0 °, electrical angle be (0 °, 180 °] when,
Pass to positive current to d phase, pass to negative current to b phase；
Electrical angle be (180 °, 360 °] in the range of, pass to positive current to b phase, pass to negative current to d phase；
Electrical angle be (90 °, 270 °] in the range of, pass to positive current to a phase, pass to negative current to c phase；
Electrical angle be (0 °, 90 °] and (270 °, 360 °] in the range of, pass to positive current to c phase, pass to negative current to a phase；
On the basis of above-mentioned energising logic, the voltage of detection resistance is sampled and is extracted fault signature, to diagnose
Go out the fault type of generation.
Further, the voltage of detection resistance is sampled and extracted fault signature, to be diagnosed to be the failure classes of generation
Type refers specifically to: this diagnostic method is when judging single-phase open fault using following decision logic:
If electrical angle be (0 °, 180 °] when detection resistance voltage be always negative value, and (180 °, 360 °] when detection
The voltage of resistance is always on the occasion of then there occurs a phase open fault；
If (0 °, 180 °] when detection resistance voltage be always on the occasion of, and (180 °, 360 °] when detection resistance electricity
Pressure is always negative value, then there occurs c phase open fault；
If (90 °, 270 °] when detection resistance voltage be always negative value, and (0 °, 90 °] ∪ (270 °, 360 °] when
The voltage of detection resistance is always on the occasion of then there occurs b phase open fault；
If (90 °, 270 °] when detection resistance voltage be always on the occasion of, and (0 °, 90 °] ∪ (270 °, 360 °] when
The voltage of detection resistance is always negative value, then there occurs d phase open fault.
Further, the voltage of detection resistance is sampled and extracted fault signature, to be diagnosed to be the failure classes of generation
Type refers specifically to: this diagnostic method is when judging single tube open fault using following decision logic:
If (0 °, 180 °] when detection resistance voltage be always negative value, and (180 °, 360 °] when detection resistance electricity
Pressure is not always on the occasion of then there occurs in a phase pipe (q1) open fault；
If (0 °, 180 °] when detection resistance voltage begin to be eventually not negative value, and (180 °, 360 °] when detection resistance
Voltage be always on the occasion of then there occurs a phase down tube (q2) open fault；
If (90 °, 270 °] when detection resistance voltage be always negative value, and (0 °, 90 °] ∪ (270 °, 360 °] when
The voltage of detection resistance begins to be not on the occasion of then there occurs pipe (q3) open fault in b phase eventually；
If (90 °, 270 °] when detection resistance voltage be not always negative value, and (0 °, 90 °] ∪ (270 °,
360 °] when detection resistance voltage be always on the occasion of then there occurs b phase down tube (q4) open fault；
If (0 °, 180 °] when detection resistance voltage be always on the occasion of, and (180 °, 360 °] when detection resistance electricity
Pressure is not always negative value, then there occurs pipe (q5) open fault in c phase；
If (0 °, 180 °] when detection resistance voltage begin be eventually not on the occasion of, and (180 °, 360 °] when detection resistance
Voltage be always negative value, then there occurs c phase down tube (q6) open fault；
If (90 °, 270 °] when detection resistance voltage be not always on the occasion of, and (0 °, 90 °] ∪ (270 °,
360 °] when detection resistance voltage be always negative value, then there occurs in d phase pipe (q7) open fault；
If (90 °, 270 °] when detection resistance voltage be always on the occasion of, and (0 °, 90 °] ∪ (270 °, 360 °] when
The voltage of detection resistance is not always negative value, then there occurs d phase down tube (q8) open fault.
Beneficial effect:
The fault-tolerant electricity-generating control method of electric excitation biconvex electrode electric machine excitation fault disclosed by the invention, only the fault inspection to setting
The voltage of measuring resistance is sampled and is extracted fault signature, both may diagnose that single tube open fault, may diagnose that single-phase again
Open fault；Controller algorithm simple it is not necessary to the computing of complexity.
Brief description
The present invention is further described with reference to the accompanying drawings and examples:
Fig. 1 is the present invention four phase electric excitation biconvex electrode electric machine open fault diagnostic method schematic diagram；
Fig. 2 is four phase electric excitation biconvex electrode electric machine standard angle control map of current；
Fig. 3 is the detection resistance voltage pattern under the present invention four phase electric excitation biconvex electrode electric machine normal condition；
Fig. 4 is detection resistance voltage pattern during the present invention four phase electric excitation biconvex electrode electric machine a phase open circuit；
Fig. 5 is detection resistance voltage pattern during the present invention four phase electric excitation biconvex electrode electric machine b phase open circuit；
Fig. 6 is detection resistance voltage pattern during the present invention four phase electric excitation biconvex electrode electric machine c phase open circuit；
Fig. 7 is detection resistance voltage pattern during pipe q1 open circuit in the present invention four phase electric excitation biconvex electrode electric machine a phase；
Fig. 8 is detection resistance voltage pattern during the present invention four phase electric excitation biconvex electrode electric machine a phase down tube q2 open circuit；
Fig. 9 is detection resistance voltage pattern during the present invention four phase electric excitation biconvex electrode electric machine d phase down tube q8 open circuit.
Specific embodiment
The present invention provides a kind of four phase electric excitation biconvex electrode electric machines and its open fault diagnostic method, for making the mesh of the present invention
, technical scheme and effect clearer, clearly, and referring to the drawings and give an actual example that the present invention is described in more detail.Should
Work as understanding, described herein be embodied as, only in order to explain the present invention, being not intended to limit the present invention.
Fig. 1 is the present invention four phase electric excitation biconvex electrode electric machine open fault diagnostic method schematic diagram.This motor include a phase around
Group, b phase winding, c phase winding, d phase winding, four phase full-bridge converters and detection resistance r.Described four phase full-bridge converters include a
Pipe q1, down tube q2 in phase, pipe q3, down tube q4 in b phase, pipe q5, down tube q6 in c phase, pipe q7, down tube q8 in d phase, each switching tube divides
Other one diode of reverse parallel connection.
Wherein it is connected on the midpoint of pipe q1 and a phase down tube q2 and c phase in a phase respectively after a phase winding and c phase winding differential concatenation
The midpoint of upper pipe q5 and c phase down tube q6, forms a passage；It is connected on respectively in b phase after b phase winding and d phase winding differential concatenation
On the midpoint of pipe q3 and b phase down tube q4 and d phase, pipe q7 and the midpoint of d phase down tube q8, form another passage.Detection resistance r is divided
It is not connected on the midpoint that a phase winding is with c phase winding and the midpoint of b phase winding and d phase winding.Controller enters to the voltage of detection resistance
Row is sampled and is extracted fault signature, to be diagnosed to be the fault type of generation.
Fig. 2 is four phase electric excitation biconvex electrode electric machine standard angle control map of current.Hypothesis a phase winding is mutual with Exciting Windings for Transverse Differential Protection
Electrical angle when sense begins to ramp up is 0.Electrical angle be (0 °, 180 °] in the range of, pass to positive current to d phase, pass to b phase negative
Electric current；Electrical angle be (180 °, 360 °] in the range of, pass to positive current to b phase, pass to negative current to d phase；In electrical angle it is
(90 °, 270 °] in the range of, pass to positive current to a phase, pass to negative current to c phase；Electrical angle be (0 °, 90 °] and (270 °,
360 °] in the range of, pass to positive current to c phase, pass to negative current to a phase.
The general principle of its fault detect is:
The electric operation principle of electric excitation biconvex electrode electric machine is: when certain phase stator poles is engaged with rotor pole, this mutually around
Group is begun to ramp up with the mutual inductance of Exciting Windings for Transverse Differential Protection, now mutually passes to forward current to this；When certain phase stator poles is departed from rotor pole,
Mutually pass to negative current to this, motor can external output torque.
If a phase open circuit, (180 °, 360 °] when detection resistance on voltage be upper relative superiority or inferiority low, its voltage be on the occasion of；
(0 °, 180 °] when detection resistance voltage be upper low height, its voltage be negative value.In the same manner, if c phase open circuit, (0 °,
180 °] when detection resistance on voltage be to be negative value on the occasion of, other moment voltages.If d phase is opened a way, (90 °, 270 °] when
Voltage in detection resistance is on the occasion of other moment voltages are negative value.If b phase open circuit, (90 °, 270 °] when detection electricity
Voltage in resistance be negative value, other moment voltages be on the occasion of.
In the event of single tube open circuit, taking q1 tube open circuit as a example, then be equivalent to (0 °, 180 °] when a phase open circuit, now detect
Ohmically voltage is negative value, and the voltage of other stage detection resistances is identical with normal condition.If it happens q2 tube open circuit, then
(180 °, 360 °] when detection resistance on voltage be on the occasion of other stages are identical with normal condition.As can be seen that it is different
When switching tube occurs open fault, its fault signature is all different.Therefore, by extracting the voltage signal in detection resistance, permissible
Be diagnosed to be is which switching tube there occurs fault.
Detection resistance voltage pattern under Fig. 3 tetra- phase electric excitation biconvex electrode electric machine normal condition；It can be seen that this voltage is not
Just it is always or is always negative.
Detection resistance voltage during Fig. 4: a phase open circuit.It can be seen that this voltage electrical angle be (0 °, 180 °] when detection resistance
Voltage be always negative value, and (180 °, 360 °] when detection resistance voltage be always on the occasion of therefore may determine that generation
A phase open fault.
Detection resistance voltage during Fig. 5: b phase open circuit.It can be seen that this voltage (90 °, 270 °] when detection resistance voltage
Be always negative value, and (0 °, 90 °] ∪ (270 °, 360 °] when detection resistance voltage be always on the occasion of therefore may determine that
There occurs b phase open fault.
Detection resistance voltage during Fig. 6: c phase open circuit.It can be seen that this voltage (0 °, 180 °] when detection resistance voltage begin
Be eventually on the occasion of, and (180 °, 360 °] when detection resistance voltage be always negative value, therefore may determine that and there occurs that c phase is opened
Road fault.
Detection resistance voltage during pipe q1 open circuit in Fig. 7: a phase.It can be seen that this voltage (0 °, 180 °] when detection resistance
Voltage is always negative value, and (180 °, 360 °] when detection resistance voltage be not always on the occasion of therefore may determine that and set out
Give birth to pipe (q1) open fault in a phase.
Detection resistance voltage during Fig. 8: a phase down tube q2 open circuit.It can be seen that this voltage (0 °, 180 °] when detection resistance
Voltage begins to be eventually not negative value, and (180 °, 360 °] when detection resistance voltage be always on the occasion of therefore may determine that and set out
Give birth to a phase down tube (q2) open fault.
Detection resistance voltage during Fig. 9: d phase down tube q8 open circuit.It can be seen that this voltage (90 °, 270 °] when detection resistance
Voltage be always on the occasion of, and (0 °, 90 °] ∪ (270 °, 360 °] when detection resistance voltage be not always negative value, therefore
May determine that and there occurs d phase down tube (q8) open fault.
Specifically each open fault mark sheet is as shown in table 1.
The fault signature table of table 1 open fault
It is understood that for those of ordinary skills, with technology according to the present invention scheme and its can send out
Bright design in addition equivalent or change, and all these change or replace the guarantor that all should belong to appended claims of the invention
Shield scope.
Claims (4)
1. a kind of four phase electric excitation biconvex electrode electric machines it is characterised in that: this motor includes a phase winding, b phase winding, c phase winding, d
Phase winding, four phase full-bridge converters and detection resistance (r)；Four phase windings of motor are divided into two passages according to the difference of phase place,
It is connected with detection resistance (r) between the midpoint of two passages；Described motor is additionally provided with controller, and described controller is to detection resistance
Voltage sampled and extracted fault signature, to be diagnosed to be the fault type of generation；
Four phase windings of described motor are divided into two passages according to the difference of phase place, refer specifically to a phase winding and c phase winding is reversely gone here and there
It is connected on the midpoint of pipe q5 and c phase down tube q6 on the midpoint of pipe q1 and a phase down tube q2 and c phase in a phase respectively, composition one leads to after connection
Road；It is connected on pipe q7 and d on the midpoint of pipe q3 and b phase down tube q4 and d phase in b phase respectively after b phase winding and d phase winding differential concatenation
The midpoint of phase down tube q8, forms another passage.
2. a kind of four phase electric excitation biconvex electrode electric machine open fault diagnostic methods it is characterised in that: this diagnostic method concrete steps
As follows: for four phase electric excitation biconvex electrode electric machines described in claim 1,
If the electrical angle when mutual inductance of a phase winding and Exciting Windings for Transverse Differential Protection begins to ramp up is 0 °, electrical angle be (0 °, 180 °] when, to d phase
Pass to positive current, pass to negative current to b phase；
Electrical angle be (180 °, 360 °] in the range of, pass to positive current to b phase, pass to negative current to d phase；
Electrical angle be (90 °, 270 °] in the range of, pass to positive current to a phase, pass to negative current to c phase；
Electrical angle be (0 °, 90 °] and (270 °, 360 °] in the range of, pass to positive current to c phase, pass to negative current to a phase；
On the basis of above-mentioned energising logic, the voltage of detection resistance is sampled and is extracted fault signature, set out with diagnosing
Raw fault type.
3. a kind of four phase electric excitation biconvex electrode electric machine open fault diagnostic methods according to claim 2 it is characterised in that:
The voltage of detection resistance is sampled and is extracted fault signature, referred specifically to the fault type being diagnosed to be generation: this diagnosis side
Method is when judging single-phase open fault using following decision logic:
If electrical angle be (0 °, 180 °] when detection resistance voltage be always negative value, and (180 °, 360 °] when detection resistance
Voltage be always on the occasion of then there occurs a phase open fault；
If (0 °, 180 °] when detection resistance voltage be always on the occasion of, and (180 °, 360 °] when detection resistance voltage begin
It is negative value eventually, then there occurs c phase open fault；
If (90 °, 270 °] when detection resistance voltage be always negative value, and (0 °, 90 °] ∪ (270 °, 360 °] when detection
The voltage of resistance is always on the occasion of then there occurs b phase open fault；
If (90 °, 270 °] when detection resistance voltage be always on the occasion of, and (0 °, 90 °] ∪ (270 °, 360 °] when detection
The voltage of resistance is always negative value, then there occurs d phase open fault.
4. a kind of four phase electric excitation biconvex electrode electric machine open fault diagnostic methods according to claim 2 it is characterised in that:
The voltage of detection resistance is sampled and is extracted fault signature, referred specifically to the fault type being diagnosed to be generation: this diagnosis side
Method is when judging single tube open fault using following decision logic:
If (0 °, 180 °] when detection resistance voltage be always negative value, and (180 °, 360 °] when detection resistance voltage simultaneously
Non- it is always on the occasion of then there occurs in a phase pipe (q1) open fault；
If (0 °, 180 °] when detection resistance voltage be not always negative value, and (180 °, 360 °] when detection resistance electricity
Pressure is always on the occasion of then there occurs a phase down tube (q2) open fault；
If (90 °, 270 °] when detection resistance voltage be always negative value, and (0 °, 90 °] ∪ (270 °, 360 °] when detection
The voltage of resistance is not always on the occasion of then there occurs in b phase pipe (q3) open fault；
If (90 °, 270 °] when detection resistance voltage be not always negative value, and (0 °, 90 °] ∪ (270 °, 360 °] when
The voltage of detection resistance is always on the occasion of then there occurs b phase down tube (q4) open fault；
If (0 °, 180 °] when detection resistance voltage be always on the occasion of, and (180 °, 360 °] when detection resistance voltage simultaneously
Non- be always negative value, then there occurs in c phase pipe (q5) open fault；
If (0 °, 180 °] when detection resistance voltage be not always on the occasion of, and (180 °, 360 °] when detection resistance electricity
Pressure is always negative value, then there occurs c phase down tube (q6) open fault；
If (90 °, 270 °] when detection resistance voltage be not always on the occasion of, and (0 °, 90 °] ∪ (270 °, 360 °] when
The voltage of detection resistance is always negative value, then there occurs pipe (q7) open fault in d phase；
If (90 °, 270 °] when detection resistance voltage be always on the occasion of, and (0 °, 90 °] ∪ (270 °, 360 °] when detection
The voltage of resistance is not always negative value, then there occurs d phase down tube (q8) open fault.
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| CN113740772B (en) * | 2021-09-07 | 2022-04-01 | 南京航空航天大学 | Double salient pole motor driving system open-circuit fault diagnosis method |
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| CN101078747A (en) * | 2007-06-29 | 2007-11-28 | 南京航空航天大学 | Double salient-pole motor drive power tube fault diagnosis method |
| CN103812319A (en) * | 2014-02-25 | 2014-05-21 | 南京航空航天大学 | Four-phase brushless DC (direct current) motor fault-tolerant power converter and control method thereof |
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| CN101078747A (en) * | 2007-06-29 | 2007-11-28 | 南京航空航天大学 | Double salient-pole motor drive power tube fault diagnosis method |
| CN103825505A (en) * | 2014-02-21 | 2014-05-28 | 太仓航创自动化科技有限公司 | Topology reconstruction method of brushless direct-current motor fault-tolerant inverter |
| CN103812319A (en) * | 2014-02-25 | 2014-05-21 | 南京航空航天大学 | Four-phase brushless DC (direct current) motor fault-tolerant power converter and control method thereof |
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