CN110086370A - Fault tolerant control method, electronic equipment and the storage medium of three-phase bridge type converter - Google Patents
Fault tolerant control method, electronic equipment and the storage medium of three-phase bridge type converter Download PDFInfo
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- CN110086370A CN110086370A CN201910406532.8A CN201910406532A CN110086370A CN 110086370 A CN110086370 A CN 110086370A CN 201910406532 A CN201910406532 A CN 201910406532A CN 110086370 A CN110086370 A CN 110086370A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
- H02M7/53871—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
- H02M7/53875—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current with analogue control of three-phase output
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
- H02M7/53871—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
- H02M7/53875—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current with analogue control of three-phase output
- H02M7/53876—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current with analogue control of three-phase output based on synthesising a desired voltage vector via the selection of appropriate fundamental voltage vectors, and corresponding dwelling times
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/539—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency
- H02M7/5395—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency by pulse-width modulation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/325—Means for protecting converters other than automatic disconnection with means for allowing continuous operation despite a fault, i.e. fault tolerant converters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a kind of fault tolerant control methods of three-phase bridge type converter, are applied to three-phase four-arm bridge circuit, wherein the four bridge legs include: first bridge arm, Article 2 bridge arm, Article 3 bridge arm, redundancy bridge arm.7 kinds of working conditions of three-phase bridge type converter are divided into 4 kinds of strategy libraries Case, faults-tolerant control is carried out to failure bridge arm by the provided SVPWM algorithm with error resilience performance.Using the embodiment of the present invention, after there is single-phase open circuit in inverter, the modified hydrothermal process can be directed to different working conditions, select corresponding Case strategy, according to seven segmentation switch lists of setting, each phase bridge arm of three-phase four-leg inverter is reconstructed, isolated fault phase bridge arm, and redundancy bridge arm is put into, make system that can also be further continued for operating normally after single-phase fault.
Description
Technical field
The present invention relates to the SVPWM algorithm improvement technical fields of the three-phase bridge type converter in field of power electronics, especially
It is related to the fault tolerant control method, electronic equipment and storage medium of a kind of three-phase bridge type converter.
Background technique
Three-phase bridge type converter is widely used in a variety of occasions, for example, Static Var Compensator, uninterruptible power supply (UPS),
Electricity generation system, control of motor of power distribution network etc..And open-circuit fault once occurs for inverter, it will directly influence entire system
The stability of system, it is heavy then whole system is caused to be paralysed.Therefore, with failure tolerant service ability inverter system increasingly by
To the attention of researcher.Single-phase open-circuit fault of this secondary design mainly for three-phase bridge type converter, a kind of tool of exhaustive presentation
There is the SVPWM algorithm of faults-tolerant control ability.
In traditional SVPWM algorithm, the modulation of three shapes of a saddle is generated by the time parameter of non-vanishing vector and null vector
Wave, then be compared with a triangular carrier, ultimately produce the trigger pulse of IGBT.In improved SVPWM algorithm: first
First, the mode that trigger pulse generates in traditional SVPWM algorithm has been abandoned, the sky of three-phase four-arm bridge-type inverter has been redefined
Between rotational voltage vector, derive new switch list, using directly export IGBT pulse signal scheme；Secondly, being deduced
New logical relation can reconfigure to obtain the work of different sectors switch simply by relevant parameter in the Ith sector
State and its turn-on time, so that achieving the purpose that reduce algorithm redundancy；Finally, but be also the most important, when inverse
After becoming the single-phase open circuit of device appearance, improved algorithm can be reconstructed each phase bridge arm of three-phase four-leg inverter, isolation
Failure phase bridge arm, and redundancy bridge arm is put into, make system that can also be further continued for operating normally after single-phase fault.
Summary of the invention
The purpose of the present invention is to provide a kind of fault tolerant control method of three-phase bridge type converter, electronic equipment and storages to be situated between
A kind of matter, it is intended to SVPWM algorithm with faults-tolerant control ability.
To achieve the above object, the present invention provides a kind of fault tolerant control method of three-phase bridge type converter, is applied to three-phase
Four bridge legs bridge circuit, wherein the four bridge legs include: first bridge arm, Article 2 bridge arm, Article 3 bridge arm, redundancy bridge arm,
The described method includes:
The switch function for defining four bridge legs corresponding to inverter obtains the electricity of four bridge legs when judging that bridge arm breaks down
Pressure condition rotational voltage vector in space, wherein the bridge arm is first bridge arm, the Article 2 bridge arm, described
Any one bridge arm in Article 3 bridge arm, the redundancy bridge arm；
Wherein, UrefTo need the reference rotational voltage vector synthesized；
By three-phase voltage after Clark is converted, the two-phase voltage in alpha-beta coordinate system is obtained, and according to two-phase voltage
Synthesized Space Rotating voltage vector obtains reference voltage；
It determines first object sector locating for reference voltage, and reference voltage is rotated to the second target sector；
Eight vector voltages are obtained by switch function, are determined according to adjacent non-zero vector voltage and synthesized reference voltage；
Determine the first state retention time of the first non-zero vector voltage, the second non-zero vector voltage, the first zero vector electricity
Second state retention time of pressure, the second zero vector voltage；
Based on second target sector, in the case where the first state retention time being not less than cycle time, root
According to the proportionate relationship of the first state retention time and second state retention time and the cycle time adjustment first
State retention time, the second state retention time.
In a kind of implementation of invention, the method also includes:
According to rotational voltage vector, determine that phase output voltage each in any one bridge arm failure and redundancy bridge arm are defeated
Voltage out；
According to each phase output voltage and redundancy bridge arm output voltage, the switch shape of IGBT in each bridge arm is determined
State；
It is described to be based on the first object sector, the case where the first state retention time being not less than cycle time
Under, it is adjusted according to the proportionate relationship of the first state retention time and second state retention time and the cycle time
The step of first state retention time, the second state retention time, comprising:
In the case that the first state retention time is not less than cycle time, according to the first state retention time and
The proportionate relationship of second state retention time and the cycle time adjustment first state retention time, the second state are kept
Time；
According to the switch state of IGBT in each bridge arm, it is by the corresponding switch state in second target sector
The corresponding switch state in first object sector；
According to first state retention time, the second state retention time, by corresponding first shape in second target sector
State retention time, the second state retention time are converted to first object sector corresponding first state retention time, the second state
Retention time.
It is described to be kept according to the first state retention time and second state in a kind of implementation of the invention
The proportionate relationship of time and the cycle time adjust the step of first state retention time, the second state retention time, comprising:
Obtain the summation of the first state retention time and second state retention time；
Obtain the first ratio of the first state retention time and the summation；
Obtain the second ratio of second state retention time and the summation；
Using the product of the cycle time and first ratio as the first state retention time adjusted；
Using the product of the cycle time and second ratio as the second state retention time adjusted.
In a kind of implementation of the invention, the of the first non-zero vector of determination voltage, the second non-zero vector voltage
One state retention time, the first zero vector voltage, the second zero vector voltage the second state retention time the step of, comprising:
The state retention time for determining the first non-zero vector voltage is the state guarantor of first time, the second non-zero vector voltage
Holding the time was the second time, wherein the sum of the first time and second time are the first state retention time；
Determine the first zero vector voltage retention time be the third time, the second zero vector voltage state retention time be
4th time, wherein the sum of the third time and the 4th time are the second state retention time.
A kind of storage medium is also disclosed, computer program is stored thereon with, the computer program is executed by processor
The step of fault tolerant control method of any one of Shi Shixian three-phase bridge type converter.
Therefore, it is situated between using the fault tolerant control method of the embodiment of the present invention three-phase bridge type converter, electronic equipment and storage
Matter, after single-phase open circuit occurs in inverter, which can be directed to different working conditions, according to seven segmentations of setting
Switch list is reconstructed each phase bridge arm of three-phase four-leg inverter, isolated fault phase bridge arm, and puts into redundancy bridge arm, makes
System can also be further continued for operating normally after single-phase fault.
Detailed description of the invention
Fig. 1 is the realization block diagram for improving SVPWM algorithm；
Fig. 2 is the three-phase four-arm bridge-type inverter circuit diagram for improving SVPWM algorithm；
Fig. 3 is synthesis and exploded view of the space vector of voltage in the Ith sector；
Fig. 4 is voltage vector magnitude not care about one's appearance figure under SVPWM mode；
Fig. 5 is seven segmentation composite diagrams of the Ith sector Case2；
Fig. 6 is the start pulse signal of a cycle when F1 is reconstructed；
Fig. 7 is the line voltage of F1；
Fig. 8 is the revolving speed of F1.
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.
Please refer to Fig. 1-8, it should be noted that only the invention is illustrated in a schematic way for diagram provided in the present embodiment
Basic conception, only shown in schema then with related component in the present invention rather than component count, shape when according to actual implementation
Shape and size are drawn, when actual implementation kenel, quantity and the ratio of each component can arbitrarily change for one kind, and its component cloth
Office's kenel may also be increasingly complex.
As depicted in figs. 1 and 2, it the embodiment of the invention provides a kind of fault tolerant control method of three-phase bridge type converter, answers
For three-phase four-arm bridge circuit.Wherein, the four bridge legs include: first bridge arm be made of IGBT1, IGBT2, Article 2
Bridge arm is made of IGBT3, IGBT4, Article 3 bridge arm is made of IGBT5, IGBT6, redundancy bridge arm is made of IGBT7, IGBT8,
Each group of bridge arm exports a phase voltage.
For the ease of being marked as shown in table 1, corresponding case library under each IGBT open-circuit condition is provided, i.e.,
The library Case.
Table 1
If the output voltage for defining Article 4 redundancy bridge arm in Fig. 2 is UX, then the voltage status of four bridge legs may make to exist
It is as follows with rotational voltage vector representation in space, it is shown below.
UA、UB、UCIt is pressure for the output of tri- bridge arm of A, B, C, then, the rotational voltage vector under different working condition obtains
As shown in table 2.
Table 2
Under Case1 normal operating conditions, UX=0, the switch function of tri- bridge arm of A, B, C corresponding to outlet side three-phase is defined,
When judging that bridge arm breaks down, the voltage status of four bridge legs rotational voltage vector in space is obtained, wherein the bridge arm is
First bridge arm, the Article 2 bridge arm, any one bridge arm in the Article 3 bridge arm；
Wherein, SzFor switch function, z=A, B, C；UoutFor rotational voltage vector；UdcFor leg inverter DC side electricity
Pressure.
It is possible to obtain (SA、SB、SC) may all combine and share eight, including 6 non-zero vectors (001),
(010), (011), (100), (101), (110) and two zero vectors (000), (111), corresponding SVPWM mould as shown in Figure 2
Voltage vector magnitude not care about one's appearance figure under formula.
It is understood that in conjunction with Fig. 1, as switch SAWhen=1, UA(t)=Udc；
As switch SBWhen=1, UB(t)=Udc；
As switch SCWhen=1, UC(t)=Udc。
Therefore the voltage vector U of formula (1) available outputout:
By (SA、SB、SC) 8 kinds of combinations substitute into above formula, and according to UoutPhase relation can be obtained Space Rotating voltage arrow
Spirogram, including 6 non-zero vector (001) U1, (010) U2, (011) U3, (100) U4, (101) U5, (110) U6 and two zero
Vector (000) U0, (111) U7 correspond to voltage vector magnitude not care about one's appearance figure under SVPWM mode as shown in Figure 2.
When the IGBT of any one bridge arm breaks down, output voltage changes, it is assumed that needs to synthesize one now
A space vector Uref, determine reference voltage UrefPosition and rotated to the Ith sector as shown in Figure 3.
Detailed process are as follows: three-phase voltage obtains the two-phase voltage in alpha-beta coordinate system after Clark is converted, and according to
Space Rotating voltage vector synthesized by two-phase voltage obtains reference voltage.
Three-phase voltage UA、UB、UCAfter Clark is converted, the two-phase voltage U in alpha-beta coordinate system is obtainedα、Uβ。
As shown in figure 4, determining according to adjacent non-zero vector voltage and synthesized reference voltage, and then according to Uα、UβIt is synthesized
Space Rotating voltage vector be determined as reference voltage Uref.Wherein, θ is | Uref| the angle with α axis.
Uref=| Uref| ∠ θ=Uα+jUβ
As shown in Fig. 2, sharing 6 sectors in voltage vector-diagram, each sector is accounted forReference voltage UrefLocating sector N
Be byIt rounds up again, i.e. ceilTo obtain first object sector locating for reference voltage；And it will ginseng
Voltage is examined to rotate to the second target sector, θ1It is that the angle of itself and α axis is, byRemainder again.In the embodiment of the present invention, second
Target sector and the 1st sector.
So, reference voltage U is determinedrefFormula used by the sector locating N are as follows:
By reference voltage UrefIt rotates to formula used by the Ith sector are as follows:
The advantages of this secondary design improved SVPWM algorithm is exactly the working condition and its conducting of different sectors switch
Time can reconfigure to obtain simply by the parameter in the Ith sector, as shown in table 3, table 4.It actually is by reference voltage
UrefRotation expresses that the relevant parameter of 6 big sectors by the Ith sector, reduces algorithm redundancy so that reaching to the Ith sector
Purpose.
Turn-on time according to the available voltage of Fig. 3 is obtained by rotation, moreover, so corresponding for 6 sectors
On state be SA、SB、SC, it is assumed that the three-phase on state in the Ith sector is S respectivelyA1、SB1、SC1, since it differs 60 °
Three-phase on state in the Ith sector is S respectivelyB1、SA1、SC1, successively rotate available state diagram as shown in table 3.Due to
On state corresponds to turn-on time, it is assumed that, each sector corresponds to turn-on time and is respectively as follows: T1、T2、T0, it is assumed that in the Ith fan
The corresponding turn-on time in area is t1、t2、t0, successively rotation obtains the turn-on time of other sectors.
Table 3
Table 4
| Sector | Ⅰ | Ⅱ | Ⅲ | Ⅳ | Ⅴ | Ⅵ |
| T1 | t1 | t2 | t1 | t2 | t1 | t2 |
| T2 | t2 | t1 | t2 | t1 | t2 | t1 |
| T0 | t0 | t0 | t0 | t0 | t0 | t0 |
As shown in figure 3, when determining the first state holding of the first non-zero vector voltage U4, the second non-zero vector voltage U6
Between, the second state retention time of the first zero vector voltage U0, the second zero vector voltage U7.It improves in SVPWM algorithm using straight
The scheme for connecing output pwm signal has redefined space voltage vector, and derives seven new segmentation switch lists (such as 5 institute of table
Show).
The synthesized reference voltage U by taking the Ith sector Case2 as an exampleref, as shown in figure 5, U at this timerefBy adjacent non-zero vector U4
(100)、U6(110) it synthesizes, cooperates zero vector U0(000)、U7(111) it realizes and reduces on-off times to the maximum extent, optimal seven sections
The formula sequence of switches is U0、U4、U6、U7、U6、U4、U0；And under working condition when Case2 failure, it should first bridge be isolated
Arm, Article 4 bridge need to devote oneself to work immediately in cold standby state, instead of first bridge arm.At this point, obtaining A, B, C, X tetra-
Ith fan-shaped switch state S on bridge armA1、SB1、SC1、SX1:
In the embodiment of the present invention, seven segmentation switch lists of setting are as shown in table 5, to each phase bridge arm of three-phase four-leg inverter
It is reconstructed, isolated fault phase bridge arm, and puts into redundancy bridge arm, make system that can also be further continued for operating normally after single-phase fault.
According to different working conditions, the Ith fan-shaped switch state S on tetra- bridge arms of A, B, C, X is obtainedA1、SB1、SC1、
SX1, the sequence of operation of each voltage vector has also been determined indirectly.Wherein, seven segmentation switch lists are seven segmentations based on software pattern
Time synthesis, is by the time T of a cycleSIt is divided into seven sections, is respectively acting on different switch states, as shown in figure 5, respectively
The setting sequence of switches is U0、U4、U6、U7、U6、U4、U0, the corresponding time is T0/4、T1/2、T2/2、T0/2、T2/2、T1/2、
T0/4。
Table 5
| State | Case1 | Case2 | Case3 | Case4 |
| SA1 | 0 1 1 1 1 1 0 | 0 0 0 0 0 0 0 | 0 1 1 1 1 1 0 | 0 1 1 1 1 1 0 |
| SB1 | 0 0 1 1 1 0 0 | 0 0 1 1 1 0 0 | 0 0 0 0 0 0 0 | 0 0 1 1 1 0 0 |
| SC1 | 0 0 0 1 0 0 0 | 0 0 0 1 0 0 0 | 0 0 0 1 0 0 0 | 0 0 0 0 0 0 0 |
| SX1 | 0 0 0 0 0 0 0 | 0 1 1 1 1 1 0 | 0 0 1 1 1 0 0 | 0 0 0 1 0 0 0 |
Based on table 5, after determining the first object sector, it is not less than cycle time in the first state retention time
In the case where, it is closed according to the first state retention time and second state retention time and the ratio of the cycle time
System's adjustment first state retention time, the second state retention time.
As shown in figure 3, non-zero vector U4、U6, zero vector U0Or U7Respective state retention time are as follows:
In formula, TSFor cycle time, m is SVPWM modulation ratio coefficient (modulation ratio),
T is worked as in judgement1+t2≥TSWhen, as shown in figure 4, synthesized voltage vector UrefEndpoint fall in regular hexagon and circumscribed circle it
Between when, output voltage the torque pulsation for being distorted and increasing motor will occur, so ovennodulation must be taken to handle.At this point, passing through
It, will be in its proportionally compression and back inscribed circle Deng the ovennodulation means than scaling.
As shown in figure 5, obtaining the summation t of the first state retention time and second state retention time1+t2；
Obtain the first ratio t of the first state retention time and the summation1/(t1+t2)；
Obtain the second ratio t of second state retention time and the summation2/(t1+t2)；
Using the product of the cycle time and first ratio as first state retention time t adjusted1'；
Using the product of the cycle time and second ratio as the second state retention time t adjusted2'。
As shown in figure 5, determining the first non-zero vector voltage U4State retention time be first time T1, the second non-null vector
Measure voltage U6State retention time be the second time T2, wherein the sum of the first time and second time be the first shape
The state retention time；
Determine the first zero vector voltage U0Retention time be third time T0/2, the second zero vector voltage U7State protect
Holding the time is the 4th time T0/2, wherein the sum of the third time and the 4th time are the second state retention time.
Then other fans are converted back by the Ith sector
In practical application, the 3 determining switch states that other sectors are converted back by the Ith sector of tabling look-up have acquired reference voltage
UrefIn the sector N, the switch state of corresponding Ith sector under the working condition tabled look-up, then tabling look-up 3 can obtain the work
Other sectors S under stateA、SB、SCThe switch state of three-phase.
Then the switch conduction times for converting back other sectors by the Ith sector are determined, reference voltage U is acquiredrefRotation is to the
The switch conduction times of I sector, then tabling look-up 4 can obtain UrefNon-zero vector, zero vector U other sectors two0Or U7It is respective
State retention time T1、T2、T0。
As shown in Figure 6 to 8, in order to verify the validity and error resilience performance of proposed SVPWM algorithm, the present invention is in MATLAB
The simulation model of three-phase PMSM vector controlled has been built under environment.In t=0.2s, load torque T is addedL=5Nm；In t
When=0.3s, 7 kinds of different working conditions are set；In t=0.4s, for different malfunctions, Fault Isolation is carried out simultaneously
Put into redundancy bridge arm.
Case1:H7 state
If in normal operation, Article 4 bridge arm will always be in cold standby state, IGBT7,8 and it is not turned on work
Make, 0~0.6s, inverter is in normal operating conditions.
Case2:F1 or F2 failure
If there is an IGBT open-circuit fault occur in first bridge arm, Article 4 bridge need to be thrown immediately in cold standby state
Enter work, instead of first bridge arm；At the same time, the IGBT1 in first bridge arm, 2 are no longer turned on work.
In t=0.3s, there is open-circuit fault in IGBT1 or IGBT2；When 0.3~0.4s, F1 or F2 are in malfunction；t
When=0.4s, Fault Isolation and bridge arm signal reconstruction are carried out；When 0.4~0.6s, inverter working condition back to normal.
Case3:F3 or F4 failure
If there is an IGBT open-circuit fault occur in Article 2 bridge arm, generation immediately is needed in Article 4 bridge in cold standby state
For Article 2 bridge arm；At the same time, the IGBT3 in Article 2 bridge arm, 4 are no longer turned on work.
In t=0.3s, there is open-circuit fault in IGBT3 or IGBT4；When 0.3~0.4s, F3 or F4 are in malfunction；t
When=0.4s, Fault Isolation and bridge arm signal reconstruction are carried out；When 0.4~0.6s, inverter working condition back to normal.
Case4:F5 or F6 failure
If there is an IGBT open-circuit fault occur in Article 3 bridge arm, generation immediately is needed in Article 4 bridge in cold standby state
For Article 3 bridge arm；At the same time, the IGBT5 in Article 3 bridge arm, 6 are no longer turned on work.
In t=0.3s, there is open-circuit fault in IGBT5 or IGBT6；When 0.3~0.4s, F5 or F6 are in malfunction；t
When=0.4s, Fault Isolation and bridge arm signal reconstruction are carried out；When 0.4~0.6s, inverter working condition back to normal.
And a kind of electronic equipment is disclosed, including memory, processor and storage on a memory and can handled
The computer program run on device, the processor realize any one three-phase bridge type inverse when executing the computer program
The step of fault tolerant control method of device.
A kind of storage medium is also disclosed, computer program is stored thereon with, the computer program is executed by processor
The step of fault tolerant control method of any one of Shi Shixian three-phase bridge type converter.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (6)
1. a kind of fault tolerant control method of three-phase bridge type converter, which is characterized in that it is applied to three-phase four-arm bridge circuit,
In, the four bridge legs include: first bridge arm, Article 2 bridge arm, Article 3 bridge arm, redundancy bridge arm, which comprises
The switch function for defining four bridge legs corresponding to inverter obtains the voltage shape of four bridge legs when judging that bridge arm breaks down
State rotational voltage vector in space, wherein the bridge arm is first bridge arm, the Article 2 bridge arm, the third
Any one bridge arm in bridge arm, the redundancy bridge arm；
Wherein, UrefTo need the reference rotational voltage vector synthesized；
By three-phase voltage after Clark is converted, the two-phase voltage in alpha-beta coordinate system is obtained, and closed according to two-phase voltage
At Space Rotating voltage vector, obtain reference voltage；
It determines first object sector locating for reference voltage, and reference voltage is rotated to the second target sector；
Eight vector voltages are obtained by switch function, are determined according to adjacent non-zero vector voltage and synthesized reference voltage；
Determine the first state retention time of the first non-zero vector voltage, the second non-zero vector voltage, the first zero vector voltage,
Second state retention time of two zero vector voltages；
Based on second target sector, in the case where the first state retention time being not less than cycle time, according to institute
State first state retention time and second state retention time and the proportionate relationship of cycle time adjustment first state
Retention time, the second state retention time.
2. a kind of fault tolerant control method of three-phase bridge type converter according to claim 1, which is characterized in that the method
Further include:
According to rotational voltage vector, phase output voltage each in any one bridge arm failure and redundancy bridge arm output electricity are determined
Pressure；
According to each phase output voltage and redundancy bridge arm output voltage, the switch state of IGBT in each bridge arm is determined；
It is described to be based on the first object sector, in the case where the first state retention time being not less than cycle time, root
According to the proportionate relationship of the first state retention time and second state retention time and the cycle time adjustment first
The step of state retention time, the second state retention time, comprising:
In the case that the first state retention time is not less than cycle time, according to first state retention time and described
When the proportionate relationship of second state retention time and the cycle time adjustment first state retention time, the second state are kept
Between；
It is first by the corresponding switch state in second target sector according to the switch state of IGBT in each bridge arm
The corresponding switch state in target sector；
According to first state retention time, the second state retention time, the corresponding first state in second target sector is protected
Hold the time, the second state retention time is converted to the first object sector corresponding first state retention time, the second state is kept
Time.
3. a kind of fault tolerant control method of three-phase bridge type converter according to claim 1, which is characterized in that the basis
The proportionate relationship of the first state retention time and second state retention time and the cycle time adjust the first shape
The step of state retention time, the second state retention time, comprising:
Obtain the summation of the first state retention time and second state retention time；
Obtain the first ratio of the first state retention time and the summation；
Obtain the second ratio of second state retention time and the summation；
Using the product of the cycle time and first ratio as the first state retention time adjusted；
Using the product of the cycle time and second ratio as the second state retention time adjusted.
4. a kind of fault tolerant control method of three-phase bridge type converter according to claim 3, which is characterized in that the determination
The first state retention time of first non-zero vector voltage, the second non-zero vector voltage, the first zero vector voltage, the second zero vector
The step of second state retention time of voltage, comprising:
When determining that the state retention time of the first non-zero vector voltage keeps for the state of first time, the second non-zero vector voltage
Between be the second time, wherein the sum of the first time and second time be the first state retention time；
Determine the first zero vector voltage retention time be the third time, the second zero vector voltage state retention time be the 4th
Time, wherein the sum of the third time and the 4th time are the second state retention time.
5. a kind of electronic equipment including memory, processor and stores the meter that can be run on a memory and on a processor
Calculation machine program, which is characterized in that the processor is realized described in any one of Claims 1-4 when executing the computer program
The step of fault tolerant control method of three-phase bridge type converter.
6. a kind of storage medium, is stored thereon with computer program, it is characterised in that: the computer program is executed by processor
The step of fault tolerant control method of any one of the Shi Shixian Claims 1-4 three-phase bridge type converter.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112350587A (en) * | 2020-10-30 | 2021-02-09 | 中车永济电机有限公司 | Traction-assisted converter and device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101510736A (en) * | 2009-03-11 | 2009-08-19 | 南京航空航天大学 | Method for restraining mid-point potential excursion of three-phase four-bridge arm tri-level inverter |
| CN103401464A (en) * | 2013-08-09 | 2013-11-20 | 江西清华泰豪三波电机有限公司 | Three-phase four-wire three-dimensional space vector control method |
| CN104578865A (en) * | 2015-01-14 | 2015-04-29 | 东南大学 | Tri-level four-leg T-shaped fault-tolerant converter and control method thereof |
| WO2017143434A1 (en) * | 2016-02-23 | 2017-08-31 | Canadian Space Agency | Energy-efficient motor drive with or without open-circuited phase |
| CN107147317A (en) * | 2017-05-23 | 2017-09-08 | 上海海事大学 | A kind of inverter parallel control method based on RC virtual impedances |
| CN109672356A (en) * | 2019-01-15 | 2019-04-23 | 同济大学 | The Active Fault-tolerant Control Method of ANPC three-level inverter single switch tube open circuit failure |
| CN109756143A (en) * | 2019-03-18 | 2019-05-14 | 中南大学 | A kind of fault tolerant control method and device of three-phase Four-switch converter |
-
2019
- 2019-05-16 CN CN201910406532.8A patent/CN110086370B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101510736A (en) * | 2009-03-11 | 2009-08-19 | 南京航空航天大学 | Method for restraining mid-point potential excursion of three-phase four-bridge arm tri-level inverter |
| CN103401464A (en) * | 2013-08-09 | 2013-11-20 | 江西清华泰豪三波电机有限公司 | Three-phase four-wire three-dimensional space vector control method |
| CN104578865A (en) * | 2015-01-14 | 2015-04-29 | 东南大学 | Tri-level four-leg T-shaped fault-tolerant converter and control method thereof |
| WO2017143434A1 (en) * | 2016-02-23 | 2017-08-31 | Canadian Space Agency | Energy-efficient motor drive with or without open-circuited phase |
| CN107147317A (en) * | 2017-05-23 | 2017-09-08 | 上海海事大学 | A kind of inverter parallel control method based on RC virtual impedances |
| CN109672356A (en) * | 2019-01-15 | 2019-04-23 | 同济大学 | The Active Fault-tolerant Control Method of ANPC three-level inverter single switch tube open circuit failure |
| CN109756143A (en) * | 2019-03-18 | 2019-05-14 | 中南大学 | A kind of fault tolerant control method and device of three-phase Four-switch converter |
Non-Patent Citations (2)
| Title |
|---|
| XUEFENG JIANG,ET AL: "Fault tolerant control of dual-winding fault-tolerant permanent magnet motor drive with three-phase four-leg inverter", 《 2016 19TH INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS (ICEMS)》 * |
| 戴阳阳: "基于三相四桥臂的永磁容错电机直接转矩控制", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑 C042-331》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112350587A (en) * | 2020-10-30 | 2021-02-09 | 中车永济电机有限公司 | Traction-assisted converter and device |
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