CN106125012B - A kind of Indirect Matrix Converter method for diagnosing faults - Google Patents
A kind of Indirect Matrix Converter method for diagnosing faults Download PDFInfo
- Publication number
- CN106125012B CN106125012B CN201610489154.0A CN201610489154A CN106125012B CN 106125012 B CN106125012 B CN 106125012B CN 201610489154 A CN201610489154 A CN 201610489154A CN 106125012 B CN106125012 B CN 106125012B
- Authority
- CN
- China
- Prior art keywords
- sector
- way switch
- rectification stage
- matrix converter
- current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000011159 matrix material Substances 0.000 title claims abstract description 20
- 238000001514 detection method Methods 0.000 claims abstract description 28
- 239000013598 vector Substances 0.000 claims description 29
- 101100412102 Haemophilus influenzae (strain ATCC 51907 / DSM 11121 / KW20 / Rd) rec2 gene Proteins 0.000 claims description 7
- 101100356020 Haemophilus influenzae (strain ATCC 51907 / DSM 11121 / KW20 / Rd) recA gene Proteins 0.000 claims description 5
- 101100042680 Mus musculus Slc7a1 gene Proteins 0.000 claims description 5
- 238000012937 correction Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 7
- 230000005611 electricity Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 5
- DSCFFEYYQKSRSV-KLJZZCKASA-N D-pinitol Chemical compound CO[C@@H]1[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)[C@H]1O DSCFFEYYQKSRSV-KLJZZCKASA-N 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000004422 calculation algorithm Methods 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002405 diagnostic procedure Methods 0.000 description 1
- 201000006549 dyspepsia Diseases 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- 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
- G01R31/40—Testing power supplies
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses a kind of Indirect Matrix Converter method for diagnosing faults.A kind of Indirect Matrix Converter method for diagnosing faults, fault detection object are Indirect Matrix Converter two-way switch open-circuit faults.The method for diagnosing faults combines rectification stage sector and the one-to-one relationship of two-way switch by detection Indirect Matrix Converter three-phase output voltage, accurate judgement and positioning failure switch.This method has many advantages, such as to be readily appreciated that and realize, is simple and reliable.
Description
Technical field
The invention belongs to power electronics fields, are related to a kind of converter method for diagnosing faults, and in particular to an inter-species
Connect formula matrix converter method for diagnosing faults.
Background technique
Indirect Matrix Converter (Indirect Matrix Converter, IMC) is by traditional matrix converter
(Matrix Converter, MC) is derived, it have energy in bidirectional flow, can four quadrant running, input-output wave shape just
The advantages that string.Compared to traditional MC, IMC also has many advantages, such as that the change of current is safe and reliable, modulation strategy is simple.In recent years, excellent with its
The opposite sex can obtain domestic scholars and widely pay close attention to and research.In the industrial applications such as wind-power electricity generation and frequency changing driving system, electricity
The back-to-back converter of die mould (Back-to-Back Converter, BBC) mature, circuit structure and control plan with its application technology
Slightly simple etc. advantages and become Vehicles Collected from Market frequency converter mainstream.Voltage-type BBC DC bus side is with a huge energy storage electricity
Hold, on the one hand the decoupling control between front and back stages may be implemented in the presence of storage capacitor, and provide energy feedback channel, but same
When also increase the volume and weight of converter.In addition, storage capacitor is short using mission, easily break down, this is greatly reduced
The stability of voltage-type BBC.IMC is similar with voltage-type BBC in structure, but the former DC bus side is without storage capacitor, because
This IMC is compact-sized, power density and system reliability are high, has a good application prospect.
With the development of industrial technology, in important applied fields such as aviation, automobile, motor drivens, to power electronic equipment
Stability and dependability proposes very high requirement, that is, needs converter to have fault-tolerant operation ability, and can be to converter
The failure of generation does accurately judgement and positioning.Researcher has done an investigation about power electronic system stability, adjusts
It looks into the result shows that semiconductor devices comes first in fragile element with 31% ratio, capacitor successively comes with gate leve driving
Thereafter, the reason of causing failure mainly environment, system transients response and load heavy duty.IMC power device is large number of, and
There is no intermediate energy storage link, when open-circuit fault occurs for some power device, the normal operation that IMC is loaded will certainly be generated not
The influence of benefit causes system performance decline even out of control.Therefore, when open-circuit fault occurs for IMC system power device, it is studied
Fault detection technique has great importance.
Currently, foreign countries have many scholars and done in-depth study to the fault detection technique of traditional MC, and propose one
A little feasible Fault Diagnosis Strategies.But academia rarely has the research in terms of IMC fault detection.Researcher is directed to IMC
Rectification stage two-way switch open-circuit fault proposes a kind of Fault Diagnosis Strategy composed entirely based on continuous wavelet transform and small echo, but
This method complexity indigestion, and use scope has certain limitation.Researcher has used common three-phase inverter failure
Inspection policies switch the open-circuit fault that the output line voltage measured positions IMC inverse cascade compared with reference to line voltage.
The present invention is directed to rectification stage two-way switch open-circuit fault, proposes a kind of simple and easy method for diagnosing faults.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention provides a kind of Indirect Matrix Converter
Method for diagnosing faults proposes a kind of method for diagnosing faults for IMC rectification stage two-way switch open-circuit fault.The diagnostic method exists
On the basis of detecting three-phase output voltage, in conjunction with the corresponding relationship of rectification stage sector and two-way switch, accurate judgement and positioning event
Barrier switch.
Technical solution: to achieve the above object, the technical solution adopted by the present invention are as follows:
A kind of Indirect Matrix Converter method for diagnosing faults, detailed process the following steps are included:
Step 1: rotatory current vectorInto new rectification stage sector, sector current count value N is reset；
Step 2: the current specific label in rectification stage sector is recorded, and in each T modulation periodSInterior detection three-phase output electricity
Pressure amplitude value；
Step 3: judge whether the absolute value of the three-phase output voltage amplitude detected is respectively less than given reference voltage width
Value, if condition is set up, count value N increases by 1, enters step four；Otherwise count value N is constant；
Step 4: within each modulation period of current rectification stage sector, judge whether count value N is greater than given reference
Value N1If condition is set up, fault-signal is generated in current sector, and sentence with two-way switch corresponding relationship in conjunction with rectification stage sector
The disconnected specific switch that open-circuit fault occurs.
Further, the rectification stage sector in the step 4 and two-way switch corresponding relationship are as follows: the electric rotating stray arrow
AmountRotation counterclockwise, in any one modulation period of TSIt is interior, in each rectification stage sector at the two-way switch of existence anduniquess
In constantly on state.Corresponding relationship between IMC rectification stage two-way switch and sector is fault detection of the present invention and identification
Important evidence.
Further, the rotatory current vectorRotation counterclockwise, by adjacent two non-zero vectors and zero in place sector
Vector modulation, in any one modulation period of TSIt is interior, always there is a two-way switch open-minded always, there are two two-way switch according to meter
Duty ratio obtained by calculating is each to be opened a period of time, remaining two-way switch is in the state turned off always.
Further, in the step 3, the judgment criteria of fault detection condition are as follows:
bool1=(| ua| < uref1)&(|ub| < uref1)&(|uc| < uref1)
Wherein, uref1It is reference voltage amplitude, lower than the three-phase output voltage amplitude under normal operating conditions；
ua、ub、ucFor the three-phase output voltage amplitude under real-time status.
Under malfunction, judgment criteria is that the absolute value of three-phase output voltage amplitude is below the reference voltage amplitude
uref1。
Further, the reference value N in the step 41Calculation method are as follows:
Wherein, fsIt is switching frequency, finIt is input voltage frequency, k1It is correction factor.k1The selection gist of correction factor and
It limits as follows: if k1Value is smaller, may cause error detection in adjacent sectors；And in view of if outlet side is with biggish perception
Load, Voltage Drop to uref1The regular hour is needed below, therefore k1Value can not be too big.Therefore in general, k1It is best
Value range is 0.6~0.8.
Further, the Indirect Matrix Converter rectification stage uses input current space vector modulation, rectification stage fan
Area's label is denoted as Reci, and wherein i=1,2..6, six two-way switch are SAP、SAN、SBP、SBN、SCP、SCN, the two-way switch with
Unique corresponding relation between sector are as follows:
The utility model has the advantages that Indirect Matrix Converter method for diagnosing faults provided by the invention, has the advantages that
1) detection method can realize fault detection on the basis of existing IMC hardware system, not need additional hard
Part circuit.
2) mentioned fault detection method simple possible, should be readily appreciated that and realize.
3) method for diagnosing faults eliminates interference of the Zero Crossing Point for Three Phase Voltage to fault detection, high reliablity.
4) rectification stage sector and two-way switch have one-to-one relationship, and breakdown switch can be accurately positioned.
Detailed description of the invention
Fig. 1 is fault detection algorithm flow chart of the present invention；
Fig. 2 is IMC topology diagram；
Fig. 3 is current phasor distribution map；
Fig. 4 is switch state of the two-way switch in rectification stage sector；
Fig. 5 is SANP after damageinWith the relationship between rectification stage sector；
Fig. 6 is two-way switch and rectification stage sector corresponding relationship；
Fig. 7 is SAPCorrelation simulation waveform when damage.
Specific embodiment
The present invention will be further explained with reference to the accompanying drawing.
IMC circuit topological structure and two-way switch fault type are as shown in Figure 2.For the open circuit event of rectification stage two-way switch
Barrier, the present invention propose a kind of method for diagnosing faults of simple possible, that is, pass through detection Indirect Matrix Converter three-phase output electricity
Pressure, and rectification stage sector and the one-to-one relationship of two-way switch are combined, accurate judgement and positioning failure switch.
Fig. 1 is the mentioned fault detection algorithm flow chart of the present invention, the specific steps are as follows:
Step 1: desired rotatory current vector enters a new rectification stage sector, immediately by the sector current count
Value N is reset；
Step 2: recording the current specific label in rectification stage sector (sector label is denoted as Reci, wherein i=1,2..6), and
Three-phase output voltage is detected within each modulation period；
Step 3: judging whether the three-phase output voltage absolute value detected is respectively less than the voltage value of a reference, if item
Part is set up, and count value N increases by 1, and otherwise count value N is constant；
Step 4: within each modulation period of current rectification stage sector, judge whether count value N is greater than given reference
Value N1If condition is set up, fault-signal is generated in current sector, and sentence with two-way switch corresponding relationship in conjunction with rectification stage sector
The disconnected specific two-way switch that open-circuit fault occurs；
When IMC is worked normally, using Double Space Vector Modulation strategy.Wherein, rectification stage uses input current space vector
Modulation.The distribution of six non-zero current vectors in the planes is as shown in Figure 3.With current phasor
For, indicate two-way switch SAPWith SCNOpen-minded, remaining two-way switch is all off.Desired current phasorRotation counterclockwise,
In any one modulation period of TSIt is interior, it is closed according to Vector modulation theorem by two adjacent non-zero vectors of place sector and zero vector
At.Known by Fig. 3, for IMC rectification stage, whenAfter the sector at place determines, in any one TS, always there is a two-way switch one
Straight open-minded, there are two two-way switch to open a period of time according to calculating gained duty ratio is each, remaining two-way switch is in and closes always
Disconnected state.By taking the Rec2 of sector as an example, SCNIt is open-minded always, SAPWith SBPEach conducting a period of time, remaining two-way switch then all close
It is disconnected.Switch state when six two-way switch are opened in each sector of rectification stage is as shown in Figure 4.As shown in Figure 4, in each rectification stage
All two-way switch of existence anduniquess are in constantly on state in sector, and this two-way switch is in adjacent two in the sector
Sector is in copped wave state, i.e., in TSInterior conducting a period of time.Corresponding relationship between IMC rectification stage two-way switch and sector
It is the important evidence of fault detection and identification of the present invention.
It is assumed that rectification stage SANOpen-circuit fault occurs.As shown in Figure 4, if SANOpen-circuit fault occurs, the sector that is affected is
Rec3, Rec4 and Rec5.When IMC is worked normally, SANIn sector, Rec4 is in opening state always.According to modulation strategy, SANDamage
Bad open-circuit fault leads to rectification stage, and there is no current flow paths in entire sector Rec4, that is, are in off state.This meaning
Taste input power can not power to the load, interrupted normal energy transfer process.In Rec3,By non-zero vector I2With I3It closes
At.In Rec5,Then by non-zero vector I4With I5Synthesis.SANSwitch state in the two sectors is all chop control, needs to make
Use SANTwo vectors be I3And I4.As the vector I in Rec32Or the vector I in Rec55When effect, IMC is worked normally, electricity
Energy is transmitted to load in source.As vector I3Or I4When work, IMC energy has been interrupted because of rectification stage no current circulation path
Normal transmitting.
The active power that load is obtained from input power when note IMC work is Pin.Regard six sectors of rectification stage as one
Entirety is analyzed, then PinIt is as shown in Figure 5 with the relationship of sector.SANOpen-circuit fault do not influence in Rec1, Rec2 and Rec6
Non-zero vector, energy normal transmission, therefore PinIt is a constant normal value.Into after Rec3, as vector I3When effect,
Rectification stage noenergy transmission path, energy transmission are affected, PinStart to reduce.According to Vector modulation theorem, in Rec3
Front half section time, vector I2Action time ratio I3It is long.And the latter half in Rec3 is then on the contrary, i.e. vector I3Working time
Compare I2It is long.Therefore PinStart to slow down at present, rear a period of time declines fast.Into after the Rec4 of sector, SANDamage interrupt completely
IMC energy transmission, PinIt is down to zero.In Rec5, energy transmission feature is then with Rec3 on the contrary, PinIt gradually increases and is restored to normal
Value.When interrupting in view of IMC without intermediate energy storage link, therefore input power energy cannot be provided for load.In Rec3 and
Rec4, because of the decline of input power, load is unable to maintain that normal work, and it is rapidly and apparent to directly result in output voltage appearance
Fall.It is contemplated that, three-phase output voltage is begun to decline in Rec3, more bright in Rec4 Voltage Drop phenomenon by analyzing above
It is aobvious, or even drop into zero.IMC does not need the additional charging time, therefore after energy normally transmits, and threephase load voltage can be fast
Quick-recovery is to normal value.Finally it is pointed out that Fig. 5 merely depicts a kind of variation tendency, rather than accurately variation is closed
System.
When there is open-circuit fault in the other two-way switch of rectification stage, circuit operation characteristic and SANThere is class when open-circuit fault
Seemingly.Known by Fig. 4, each two-way switch of rectification stage is the state opened always a specific sector, and switch and sector
Corresponding relationship be unique.Based on the electric circuit characteristic of IMC under malfunction, the fault detection basic ideas that the present invention is mentioned are
In each rectification stage sector detection three-phase output voltage, in conjunction with the corresponding relationship accurate judgement between two-way switch and sector and determine
Position breakdown switch.Wherein, the corresponding relationship between two-way switch and sector is as shown in Figure 6.
Shown in fault detection condition such as formula (1), uref1It is reference voltage, which is far below normal output voltage amplitude.
The condition that formula (1) is set up is that the absolute value of the three-phase output voltage detected is below uref1.Known by three phase sine voltage characteristic,
When IMC is worked normally, even if zero crossing occurs in certain phase voltage, in addition two-phase voltage amplitude can also be higher than uref1.Therefore do not have to examine
Consider Zero Crossing Point for Three Phase Voltage to interfere to fault detection bring.
bool1=(| ua| < uref1)&(|ub| < uref1)&(|uc| < uref1) (1)
Known by Fig. 5, is the fan of chop control in the two switch states after open-circuit fault occurs for some two-way switch
Area, three-phase output voltage can also be lower than u whithin a period of timeref1.But in the time span for opening sector always and meeting formula (1)
It is longest, because of sector PinAlways 0.It is brought in order to which breakdown switch is accurately positioned and excludes these sectors to fault detection
Interference, each sector to three-phase output voltage be lower than uref1The case where count, when count value N be greater than reference value N1When, just exist
As soon as the sector generates a fault-signal, can determine whether specifically open-circuit fault occurs for which two-way switch in conjunction with Fig. 6.Reference value N1
It is calculated, is shown below by formula (2):
In formula (2), fsIt is switching frequency, finIt is input voltage frequency, k1It is correction factor.
Embodiment
Fig. 7 is to work as SAPRelevant simulation waveform when open-circuit fault occurs.As shown in Figure 4, SAPIt breaks down and only will affect fan
Area Rec6, Rec1 and Rec2.Fig. 7 (a) is three-phase output voltage, and Fig. 7 (c) is rectification stage sector auxiliary information.Fig. 7 (b) is IMC
Operating status schematic diagram.Although in t1Moment, SAPOpen-circuit fault occurs, but at this timeEnter Rec3, therefore IMC tune from Rec2
Make unaffected, output voltage sine, when with working normally.WhenInto after Rec6, by Fig. 7 (a) it is found that in the sector
It is slowed down under front half section time three-phase voltage, the second half section, then Voltage Drop phenomenon was then obviously accelerated.In Rec1, due to PinZero is down to,
After the perceptual energy stored in inductance is fallen by resistance consumption, three-phase output voltage drops to zero.In Rec2, because among IMC
Link is without storage capacitor, therefore three-phase output voltage is with PinIncrease quickly increase and be finally restored to normal value.
Fig. 7 (d) rectification stage fault detection signal, Fig. 7 (e) are three-phase output voltages in uref1In impacted fan when following
The count value in area.Wherein, reference voltage amplitude uref1Value is related with the three-phase output voltage amplitude under normal operating conditions,
In example of the present invention, reference voltage amplitude uref1Value is 20V.A period of time, three-phase are defeated behind Rec6 known to Fig. 7 (e)
Voltage is low out arrives uref1Hereinafter, still the value is far below N1(20), therefore fault detection signal is zero always.In Rec1, three-phase
Voltage is in uref1Hereinafter, count value increases always.When greater than N1(20) when, a fault detection signal is generated in the sector, is such as schemed
Shown in (7. d).And in the front half section time of Rec2, although count value increases always when starting, with three-phase output voltage
It increases, count value remains unchanged, and rests on N1(20) below.Comparison diagram 6 is it is found that fault detection method proposed by the invention is quasi-
Really detect SAPOpen-circuit fault occurs.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (4)
1. a kind of Indirect Matrix Converter method for diagnosing faults, it is characterised in that: detailed process the following steps are included:
Step 1: rotatory current vectorInto new rectification stage sector, sector current count value N is reset；
Step 2: the current specific label in rectification stage sector is recorded, and in each T modulation periodSInterior detection three-phase output voltage width
Value；
Step 3: judging whether the absolute value of the three-phase output voltage amplitude detected is respectively less than given reference voltage amplitude,
If condition is set up, count value N increases by 1, enters step four；Otherwise count value N is constant；
Step 4: within each modulation period of current rectification stage sector, judge whether count value N is greater than given reference value N1,
If condition is set up, fault-signal is generated in current sector, and rectification stage sector and the judgement of two-way switch corresponding relationship is combined to have
The switch of body generation open-circuit fault；
Rectification stage sector and two-way switch corresponding relationship in the step 4 are as follows: the rotatory current vectorRotation counterclockwise,
In any one modulation period of TSInterior, the two-way switch of existence anduniquess is in constantly on shape in each rectification stage sector
State；
The rotatory current vectorRotation counterclockwise, is synthesized by two adjacent non-zero vectors of place sector with zero vector, in office
Anticipate one modulation period TSIt is interior, always there is a two-way switch open-minded always, there are two two-way switch according to calculating gained duty ratio
Each to open a period of time, remaining two-way switch is in the state turned off always.
2. Indirect Matrix Converter method for diagnosing faults according to claim 1, it is characterised in that: the step 3
In, the judgment criteria of fault detection condition are as follows:
bool1=(| ua| < uref1)&(|ub| < uref1)&(|uc| < uref1)
Wherein, uref1It is reference voltage amplitude, lower than the three-phase output voltage amplitude under normal operating conditions；
ua、ub、ucFor the three-phase output voltage amplitude under real-time status.
3. Indirect Matrix Converter method for diagnosing faults according to claim 1, it is characterised in that: in the step 4
Reference value N1Calculation method are as follows:
Wherein, fsIt is switching frequency, finIt is input voltage frequency, k1It is correction factor.
4. Indirect Matrix Converter method for diagnosing faults according to claim 1, it is characterised in that: the indirect type square
Battle array converter rectification stage uses input current space vector modulation, and rectification stage sector label is denoted as Reci, wherein i=1,2..6,
Six two-way switch are SAP、SAN、SBP、SBN、SCP、SCN, unique corresponding relation between the two-way switch and sector are as follows: two-way
Switch SAP、SAN、SBP、SBN、SCP、SCNCorresponding rectification stage sector are as follows: Rec1, Rec4, Rec3, Rec6, Rec5, Rec2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610489154.0A CN106125012B (en) | 2016-06-28 | 2016-06-28 | A kind of Indirect Matrix Converter method for diagnosing faults |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610489154.0A CN106125012B (en) | 2016-06-28 | 2016-06-28 | A kind of Indirect Matrix Converter method for diagnosing faults |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106125012A CN106125012A (en) | 2016-11-16 |
| CN106125012B true CN106125012B (en) | 2019-03-19 |
Family
ID=57285410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610489154.0A Expired - Fee Related CN106125012B (en) | 2016-06-28 | 2016-06-28 | A kind of Indirect Matrix Converter method for diagnosing faults |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106125012B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840406B (en) * | 2016-11-29 | 2019-08-16 | 浙江中新电力工程建设有限公司自动化分公司 | Isolation switch method for diagnosing faults based on matrix neural network |
| US11152780B2 (en) * | 2017-08-31 | 2021-10-19 | Eaton Intelligent Power Limited | Adjustable speed drive with integrated solid-state circuit breaker and method of operation thereof |
| WO2019058671A1 (en) * | 2017-09-25 | 2019-03-28 | 日本電産株式会社 | Malfunction diagnosis method, motor control method, power conversion device, motor module, and electric power steering device |
| CN108414873A (en) * | 2018-03-05 | 2018-08-17 | 南京婆娑航空科技有限公司 | A kind of three-phase inverter power device open fault detection method |
| CN108761351B (en) * | 2018-06-15 | 2020-06-09 | 南京理工大学 | Three-phase rectifier open-circuit fault diagnosis method based on SVPWM sector number |
| CN111190066B (en) * | 2020-01-14 | 2021-01-05 | 中南大学 | Fault diagnosis method for matrix converter motor driving system |
| CN111537914A (en) * | 2020-04-27 | 2020-08-14 | 江苏大学 | Open-circuit fault detection method for power tube of three-phase inverter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1213888A (en) * | 1997-10-08 | 1999-04-14 | 本田技研工业株式会社 | Fault diagnosis circuit |
| CN104682351A (en) * | 2015-02-13 | 2015-06-03 | 中南大学 | Matrix converter open-circuit fault tolerant control method based on mathematical structure modulation |
| CN105356764A (en) * | 2015-10-30 | 2016-02-24 | 南京航空航天大学 | Z-source two-stage matrix converter with fault-tolerant topology and control method thereof |
| CN105548792A (en) * | 2015-12-28 | 2016-05-04 | 中南大学 | Matrix converter switch open circuit fault diagnosis method based on prediction control |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2402426A1 (en) * | 2000-03-08 | 2001-09-13 | Kabushiki Kaisha Yaskawa Denki | Pwm cycloconverter and power supply abnormality detection circuit |
| FR3017958B1 (en) * | 2014-02-21 | 2017-11-24 | Continental Automotive France | OPEN CIRCUIT DETECTION IN A SWITCHING STRUCTURE |
-
2016
- 2016-06-28 CN CN201610489154.0A patent/CN106125012B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1213888A (en) * | 1997-10-08 | 1999-04-14 | 本田技研工业株式会社 | Fault diagnosis circuit |
| CN104682351A (en) * | 2015-02-13 | 2015-06-03 | 中南大学 | Matrix converter open-circuit fault tolerant control method based on mathematical structure modulation |
| CN105356764A (en) * | 2015-10-30 | 2016-02-24 | 南京航空航天大学 | Z-source two-stage matrix converter with fault-tolerant topology and control method thereof |
| CN105548792A (en) * | 2015-12-28 | 2016-05-04 | 中南大学 | Matrix converter switch open circuit fault diagnosis method based on prediction control |
Non-Patent Citations (1)
| Title |
|---|
| 矩阵变换器开路故障分析及诊断方法;王莉娜等;《中南大学学报(自然科学版)》;20150630;第46卷(第6期);2118-2127 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106125012A (en) | 2016-11-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106125012B (en) | A kind of Indirect Matrix Converter method for diagnosing faults | |
| CN105548792B (en) | Matrix converter switch open method for diagnosing faults based on PREDICTIVE CONTROL | |
| CN103235219B (en) | A kind of sub-module fault diagnostic method of modularization multi-level converter | |
| AU2013377628B2 (en) | Node energy diagnosis method for fault of switched reluctance motor double-switch power converter | |
| CN102567783A (en) | Expert fault analytical and diagnostic method of parallel mixed type power quality regulator | |
| CN106208141B (en) | A kind of V2G charge and discharge devices with no-power compensation function | |
| CN107064707A (en) | Open fault detection method of the dual stage matrix converter in reverse power generation state | |
| CN112994429A (en) | Fault tolerance control method for input-parallel output-series boost converter | |
| CN106019044B (en) | The single-phase four-quadrant pulse rectifier switching tube open-circuit fault diagnostic method of two level of electric traction alternating-current transmission | |
| CN109975681A (en) | The two-way AC-DC matrix converter method for diagnosing faults of High Frequency Link | |
| CN103746382A (en) | Active power filtering system | |
| CN103487706B (en) | Based on the cascade connection type combining inverter cell failure detection method that pulse voltage compares | |
| CN203674567U (en) | Comprehensive distribution box | |
| Wang et al. | An intelligent fault diagnosis method for open-circuit faults in power-electronics energy conversion system | |
| CN206850440U (en) | One kind mends anti-harmonic wave intelligent capacitor altogether | |
| Li et al. | Directional protection based on fault component energy function in micro-grid | |
| CN105589012B (en) | Interconnection type micro-capacitance sensor unbalanced fault regional detection device and diagnostic method | |
| CN103647289A (en) | Capacitance-continuously-adjustable power capacitor control method and device | |
| Yang et al. | Open-Circuit fault diagnosis and tolerant method of multiport triple active-bridge DC-DC converter | |
| CN114172401B (en) | NPC three-level inverter multi-class fault diagnosis method based on reduced order observer | |
| CN107681950A (en) | A kind of highly reliable high efficiency control driver based on three-level topology | |
| CN101860070A (en) | Uninterruptible power supply for high-frequency soft switch of locomotive air conditioner and realization method thereof | |
| CN106950510B (en) | Modularization DC-DC converter trouble-shooter and method based on magnetic element voltage | |
| CN202406055U (en) | Photovoltaic grid connected inverter PWM controller | |
| CN212749082U (en) | Hydrogen fuel cell one-way DC/DC converter test system based on PEMFC physical model |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190319 Termination date: 20200628 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |