CN106505889A - A kind of airborne power supply plurality of voltages partial pressure method of supplying power to - Google Patents
A kind of airborne power supply plurality of voltages partial pressure method of supplying power to Download PDFInfo
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- CN106505889A CN106505889A CN201611109995.0A CN201611109995A CN106505889A CN 106505889 A CN106505889 A CN 106505889A CN 201611109995 A CN201611109995 A CN 201611109995A CN 106505889 A CN106505889 A CN 106505889A
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Classifications
-
- 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
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc 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
- H02M7/217—Conversion of ac power input into dc 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
- H02M7/219—Conversion of ac power input into dc 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 in a bridge configuration
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
-
- 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
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc 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
- H02M7/217—Conversion of ac power input into dc 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
- H02M7/219—Conversion of ac power input into dc 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 in a bridge configuration
- H02M7/2195—Conversion of ac power input into dc 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 in a bridge configuration the switches being synchronously commutated at the same frequency of the AC input voltage
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
Abstract
The invention discloses a kind of airborne power supply plurality of voltages partial pressure method of supplying power to, by on the basis of existing dual-level matrix frequency converter topological structure, a bridge arm being made up of two two-way switch is drawn in three-phase input alternating current power supply neutral point, the introducing of the bridge arm substantially increases flexibility ratio during AC/DC changer faults-tolerant controls.
Description
Art
The present invention relates to field of power supplies, and in particular to a kind of airborne power supply plurality of voltages partial pressure method of supplying power to.
Background technology
Airborne electrical equipment requires higher power supply quality, Voltage Cortrol precision, frequency Adjustment precision, alternating voltage waveform
Sine degree, voltage surge and spike etc. have certain technical standard.
There is 1～2 electromotor on a usual electromotor, therefore many electromotors are housed on multiengined aeroplane.Directly
Electromotor all parallel operations in stream power-supply system.The parallel operation that alternating current generator has, the not parallel operation having.Work not in parallel
The AC power supply system of work is relatively simple；Parallel system is then more complicated, but power supply capacity is big, and the fluctuation of load is to supply voltage
Less with the impact of frequency, therefore the quality of power supply is high, and it is difficult interruption of power supply.
At present, such as the high leading-edge field of aviation, need power inverter can possess nonserviceable under realize fault-tolerant operation
Ability.Power device will cause power as the basic device for constituting various power inverters when power device is damaged
Changer loses service ability, or even causes catastrophic consequence, and it is very that therefore the faults-tolerant control of power inverter is studied
It is necessary.Fault-tolerant, it is exactly the abbreviation of fault tolerant.With the development of science and technology, the stability and reliability to power-supply system
Property require more and more higher.
Converters be realize airborne power supply conversion and effectively utilizes key device, converters by
Continuous variable system and discrete event dynamic system interact and form unified dynamical system.Electricity under each on off state
Road is possibly linear, but causes whole system to be changed into discontinuous non-thread again the switching of on off state according to certain rule
Sexual system.
The analysis of traditional converters and it is designed with small signal linearization method and obtains ignoring on off state
Linear model, although this model can easily using traditional Frequency Domain Design Method, the problem that exists is when becoming
When parallel operation operating point occurs wide variation, poor system performance, while be possible to occur not in signal wide variation
Expected wild effect.
Content of the invention
For solving the above problems, the present invention provides a kind of airborne power supply plurality of voltages partial pressure method of supplying power to, with it,
Solve on the basis of existing dual-level matrix frequency converter topological structure, three-phase input alternating current power supply neutral point draw one by
The bridge arm that two two-way switch are constituted, the introducing of the bridge arm substantially increase flexibility ratio during AC/DC changer faults-tolerant controls；Should
Method is not required to measurement input and loads, adjust current reference value according to output error for DC/DC converter current reference values,
Method so as to improve stable state accuracy, it is achieved that automatically adjust switching control, can ensure that DC/DC convertor controls are global steady
There is robustness to the change such as input voltage, load while qualitative, accelerate the response speed of multiple-channel output voltage.
To achieve these goals, the present invention provides a kind of airborne power supply plurality of voltages partial pressure method of supplying power to, the supplier of electricity
Method comprises the steps：
The alternating current that onboard generators send is converted to unidirectional current by S1.AC/DC modules, and is exported to DC/DC multichannels point
Pressure conversion module and battery module；
S2., when airborne power supply underload is run, energy-storage module absorbs electric energy from AC/DC modules, is born in airborne power supply excessively
During carrying row, energy-storage module is powered to DC/DC multichannel partial pressure conversion modules；
S3.DC/DC multichannel partial pressures conversion module provides stable voltage to multichannel loading.
Preferably, in S1, when the alternating current that onboard generators send is converted to unidirectional current by AC/DC modules, using appearance
Wrong control method is controlled, and the method comprises the steps：
S11., when each two-way switch pipe normal work in rectification stage circuit, the space vector of input current is taken based on
Modulation strategy；
S12. lose when drive signal occurs in certain two-way switch pipe of the anode connection with rectification stage circuit direct bus bar side
When mistake or open circuit breakage failure, the drive signal of the two-way switch pipe for breaking down is switched to S immediately1；Double when failure
When being that whole space vector sector is positive maximum to the input phase voltage connect by switching tube, following place is done to the sector modulated signal
Reason：S1Permanent open-minded, two down tubes not broken down in rectification stage circuit are open-minded in such a way：In the space vector sector
Front half section time, the two-way switch being connected with input phase voltage absolute value larger are first open-minded, another two-way switch Guan Ze
Open-minded in the latter half of the space vector sector；The modulated signal of other sectors of rectification stage circuit is not processed；
When with rectification stage circuit direct bus bar side negative terminal connection certain two-way switch pipe occur drive signal lose or
During person's open circuit breakage failure, the drive signal of the two-way switch pipe for breaking down is switched to S immediately2；Switching tube when failure
When connected input phase voltage is that whole space vector sector negative sense is maximum, following process is done to the sector modulated signal：S2Permanent
Open-minded, the two upper pipes not broken down in rectification stage circuit are open-minded in such a way：In the space vector sector front half section
Time, the two-way switch being connected with input phase voltage absolute value larger are first open-minded, and another two-way switch Guan Ze is in the sky
Between vector sector latter half open-minded；The modulated signal of other sectors of rectification stage circuit is not processed.
The invention has the advantages that：(1) solve on the basis of existing dual-level matrix frequency converter topological structure, three
Phase input ac power neutral point draws a bridge arm being made up of two two-way switch, and the introducing of the bridge arm is substantially increased
Flexibility ratio during AC/DC changer faults-tolerant controls；(2) for DC/DC converter current reference values, it is not required to measurement input and bears
Carry, according to output error adjust current reference value, the method so as to improve stable state accuracy, it is achieved that automatically adjust switching control,
There can be robustness to the change such as input voltage, load while DC/DC convertor controls global stabilities are ensured, accelerate
The response speed of multiple-channel output voltage.
Description of the drawings
Fig. 1 shows a kind of block diagram of airborne power supply plurality of voltages partial pressure method of supplying power to of the present invention；
Fig. 2 shows a kind of flow chart of airborne power supply plurality of voltages partial pressure method of supplying power to.
Specific embodiment
Fig. 1 shows that a kind of airborne power supply plurality of voltages partial pressure method of supplying power to 10, the system 10 include：
AC/DC modules 11, for being converted to unidirectional current by the alternating current of onboard generators；
Battery module 12, for storing electric energy when power-supply system 10 is underload, when power-supply system 10 is transshipped, output is straight
Stream electric energy；
DC/DC multichannel partial pressures conversion module 13, for by AC/DC modules 11 and/or battery module 13, carrying out voltage change
Change, for powering for the airborne load 30 of multichannel；
Control module 14, for controlling the operation of power-supply system 10；
Characterized in that, the AC/DC modules 11 are the dual-level matrix frequency converter with fault tolerance, the DC/DC
Multichannel partial pressure conversion module is multiple second order converters, and each second order converters load is airborne negative all the way
Carry power supply, each equal independent control of second order converters.
Preferably, the AC/DC modules 11 include：Rectification stage circuit and fault tolerable circuit；The fault tolerable circuit includes two
The two-way switch S of series connection1、S2, S1、S2Junction point be connected with the neutral point of three-phase alternating current input power；S1The other end with whole
The anode (P) of stream level circuit direct bus bar side is connected, S2The other end be connected with the negative terminal of rectification stage circuit direct bus bar side；Institute
It is by 6 two-way switch pipe S to state rectification stage circuitap、Sbp、Scp、San、Sbn、ScnThe rectified three-phase circuit of composition；Wherein, SapWith
San、SbpAnd Sbn、ScpAnd ScaSeries connection forms three bridge arms, S respectivelyap、Sbp、ScpThe upper pipe of bridge arm, S are respectively corresponded toan、Sbn、
ScnRespectively correspond to the down tube of bridge arm, the upper, lower tube of three bridge arms respectively with the anode of rectification stage circuit direct bus bar side and bear
End is connected；SapAnd San、SbpAnd Sbn、ScpAnd ScnJunction point be connected with three outfans of onboard generators respectively.
Preferably, the two-way switch S1、S2By two IGBT device common emitter connection groups with anti-paralleled diode
Into.
Wherein, control module 14 builds the above-mentioned dual-level matrix frequency converter with fault tolerance；
It is respectively controlled by two two-way switch S1, S2 in fault tolerable circuit, it is possible to achieve stage type matrix exists
Fault-tolerant operation under malfunction, concretely comprises the following steps：
When each two-way switch pipe normal work in rectification stage circuit, the space vector modulation of input current is taken based on
Strategy；
When with rectification stage circuit direct bus bar side anode connection certain two-way switch pipe occur drive signal lose or
During person's open circuit breakage failure, the drive signal of the two-way switch pipe for breaking down is switched to S immediately1；Two-way opened when failure
When the input phase voltage connect by pass pipe is that whole space vector sector is positive maximum, following process is done to the sector modulated signal：
S1Permanent open-minded, two down tubes not broken down in rectification stage circuit are open-minded in such a way：Before the space vector sector
Half time, the two-way switch being connected with input phase voltage absolute value larger are first open-minded, and another two-way switch Guan Ze exists
The latter half of the space vector sector is open-minded；The modulated signal of other sectors of rectification stage circuit is not processed；
When with rectification stage circuit direct bus bar side negative terminal connection certain two-way switch pipe occur drive signal lose or
During person's open circuit breakage failure, the drive signal of the two-way switch pipe for breaking down is switched to S immediately2；Switching tube when failure
When connected input phase voltage is that whole space vector sector negative sense is maximum, following process is done to the sector modulated signal：S2Permanent
Open-minded, the two upper pipes not broken down in rectification stage circuit are open-minded in such a way：In the space vector sector front half section
Time, the two-way switch being connected with input phase voltage absolute value larger are first open-minded, and another two-way switch Guan Ze is in the sky
Between vector sector latter half open-minded；The modulated signal of other sectors of rectification stage circuit is not processed.
Preferably, each the second order converters in the DC/DC multichannels partial pressure conversion module 13 include
The setting of Boost translation circuits, switch controller and PI compensators, the control connected mode increased after PI compensation is to mend PI
Repay two inputs of device respectively with Boost translation circuits output voltage signal and Boost translation circuit output voltage reference values
xd2Signal connects；The U of PI compensator outfanscpSignal and ILoMultiplier is entered together, from the current reference of the multiplier output
Value xd1Signal and xd2Signal, output voltage signal and iLSignal is entered in switch controller together, the output of switch controller
End signal and Boost translation circuits switch S signals be connecteds, the switching of controlling switch S, its breaker in middle S and AC/DC modules 11 and/
Or the DC voltage output end of battery module 13 is connected in series.
Preferably, the control module 14 sets up power electronics according to the working condition of each second order converters
The Controlling model of the switch controller of changer, referred to as switched system model, according to the switched system model to second order electricity
Power electronic converter is controlled, and to export voltage that is constant and meeting loading demand, concrete control mode is as follows：
If model is second order, then the switched system model of second order changer is as follows：
ThereinIt is the state variable of system,It is constant matricess, for second order
N for systemx=2, m are the numbers of switched system subsystem；In general, x=[x1x2]T, x1For inductive current, x2For defeated
Go out voltage, subscript T represents vectorial transposition；
If the expected value x of system state variablesdFor constant, then obtaining error system function is：
E=x (t)-xd(t)
kiBe definition constant matricess, (X (t) withEqually) be system state variable, xdT () actually
It is exactly above-mentioned state variable expected value；
Define vi(e (t)) is the Lyapunov functions for switching subsystem i, is expressed as：
vi(e (t))=e (t)TPie(t)+e(t)TSi, (3)
Wherein PiFor symmetrical matrix,Meet following formula：
Wherein αi＞ 0 is given constant, and M is the symmetrical matrix of corresponding dimension, Si T、Ai T、ki TIt is S respectivelyi、Ai、kiTurn
Put, first solve inequality (4) and (5) and obtain PiAnd Si, and then v is calculated according to formula (3)i(e(t))；
Switching control rule is selected, if σ (t) is switch switching signal, σ (t):[0, ∞) → 1 ... and m } it is dividing for time
Section constant function, σ (t)=i represent that current system operates in i-th subsystem, for error system formula (2), set such as incision
Change control law：
Formula (6) represents the subsystem for selecting Lyapunov functions maximum as current sub-system so that system is switched to this
Individual subsystem work；
According to output error e2Adjust current reference value xd1, in the ideal situation, current reference value is xd1=IL0；When depositing
When Parameter uncertainties or input voltage are changed with load, adjusting current reference value is：
xd1=(1+ β) IL0=ucpIL0(7)
Wherein β=(kp·e2+kI∫e2dt)/xd2, kpIt is the proportionality coefficient of PI compensators, kIIt is the integration system of PI compensators
Number, e2=x2-xd2, xd2For output voltage reference value,.
Fig. 2 shows a kind of flow chart of airborne power supply plurality of voltages partial pressure method of supplying power to, and the method for supplying power to includes as follows
Step：
The alternating current that onboard generators send is converted to unidirectional current by S1.AC/DC modules, and is exported to DC/DC multichannels point
Pressure conversion module and battery module；
S2., when airborne power supply underload is run, energy-storage module absorbs electric energy from AC/DC modules, is born in airborne power supply excessively
During carrying row, energy-storage module is powered to DC/DC multichannel partial pressure conversion modules；
S3.DC/DC multichannel partial pressures conversion module provides stable voltage to multichannel loading.
Preferably, in S1, when the alternating current that onboard generators send is converted to unidirectional current by AC/DC modules, using appearance
Wrong control method is controlled, and the method comprises the steps：
S11., when each two-way switch pipe normal work in rectification stage circuit, the space vector of input current is taken based on
Modulation strategy；
S12. lose when drive signal occurs in certain two-way switch pipe of the anode connection with rectification stage circuit direct bus bar side
When mistake or open circuit breakage failure, the drive signal of the two-way switch pipe for breaking down is switched to S immediately1；Double when failure
When being that whole space vector sector is positive maximum to the input phase voltage connect by switching tube, following place is done to the sector modulated signal
Reason：S1Permanent open-minded, two down tubes not broken down in rectification stage circuit are open-minded in such a way：In the space vector sector
Front half section time, the two-way switch being connected with input phase voltage absolute value larger are first open-minded, another two-way switch Guan Ze
Open-minded in the latter half of the space vector sector；The modulated signal of other sectors of rectification stage circuit is not processed；
When with rectification stage circuit direct bus bar side negative terminal connection certain two-way switch pipe occur drive signal lose or
During person's open circuit breakage failure, the drive signal of the two-way switch pipe for breaking down is switched to S immediately2；Switching tube when failure
When connected input phase voltage is that whole space vector sector negative sense is maximum, following process is done to the sector modulated signal：S2Permanent
Open-minded, the two upper pipes not broken down in rectification stage circuit are open-minded in such a way：In the space vector sector front half section
Time, the two-way switch being connected with input phase voltage absolute value larger are first open-minded, and another two-way switch Guan Ze is in the sky
Between vector sector latter half open-minded；The modulated signal of other sectors of rectification stage circuit is not processed.
Preferably, in step s3,
DC/DC multichannel partial pressure conversion modules have multiple second-order electronic changers, and each second order changer is at least to one
The airborne load in road is powered.
Preferably, in step s3, the Controlling model of the switch controller of converters is set up, is referred to as switched
Second order converters are controlled by system model according to the switched system model, to export constant and meet negative
The voltage of load demand.
Preferably, it is as follows that the concrete control mode of voltage that is constant and meeting loading demand is exported：
S31. model is set as second order, then the switched system model of second order changer is as follows：
ThereinIt is the state variable of system,It is constant matricess, for second order
N for systemx=2, m are the numbers of switched system subsystem；In general, x=[x1x2]T, x1For inductive current, x2For defeated
Go out voltage, subscript T represents vectorial transposition；
If the expected value x of system state variablesdFor constant, then obtaining error system function is：
E=x (t)-xd(t)
kiBe definition constant matricess, (X (t) withEqually) be system state variable, xdT () actually
It is exactly above-mentioned state variable expected value；
S32. v is definedi(e (t)) is the Lyapunov functions for switching subsystem i, is expressed as：
vi(e (t))=e (t)TPie(t)+e(t)TSi, (3)
Wherein PiFor symmetrical matrix,Meet following formula：
Wherein αi＞ 0 is given constant, and M is the symmetrical matrix of corresponding dimension, Si T、Ai T、ki TIt is S respectivelyi、Ai、kiTurn
Put, first solve inequality (4) and (5) and obtain PiAnd Si, and then v is calculated according to formula (3)i(e(t))；
S33. switching control rule is selected, if σ (t) is switch switching signal, σ (t):[0, ∞) → 1 ... and m } it is the time
Piecewise constant function, σ (t)=i represents that current system operates in i-th subsystem, for error system formula (2), sets such as
Lower switching control law：
Formula (6) represents the subsystem for selecting Lyapunov functions maximum as current sub-system so that system is switched to this
Individual subsystem work；
S34. according to output error e2Adjust current reference value xd1, in the ideal situation, current reference value is xd1=IL0；
When there is Parameter uncertainties or input voltage and load changes, adjusting current reference value is：
xd1=(1+ β) IL0=ucpIL0(7)
Wherein β=(kp·e2+kI∫e2dt)/xd2, kpIt is the proportionality coefficient of PI compensators, kIIt is the integration system of PI compensators
Number, e2=x2-xd2, xd2For output voltage reference value.
Preferably, the second-order electronic variator includes Boost translation circuits, obtains Boost according to basic laws of circuit
The dynamical equation of changer is：
Wherein x=[x1x2]T=[iLvC]T, iLFor inductor current value, vCFor output voltage values, Ai、biRespectively system
Matrix and input matrix, when subsystem number m=3 is arranged, then nx=2, i=1,2,3, U=E, E are input DC power electricity
Pressure value, then have three below pattern：
Pattern 1：Boost translation circuits switch S closures, now sytem matrix and input matrix are respectively：
Pattern 2：Boost translation circuits switch S disconnects, while inductive current iLIt is more than 0, now sytem matrix and input square
Battle array is respectively：
Pattern 3：Boost translation circuits switch S disconnects, while inductive current iL0 is equal to, now sytem matrix and input square
Battle array is respectively：
Above content is further description made for the present invention with reference to specific preferred implementation, it is impossible to assert
The present invention be embodied as be confined to these explanations.For general technical staff of the technical field of the invention,
On the premise of without departing from present inventive concept, some equivalent substitutes or obvious modification is made, and performance or purposes are identical, all should
It is considered as belonging to protection scope of the present invention.
Claims (2)
1. a kind of airborne power supply plurality of voltages partial pressure method of supplying power to, the method for supplying power to comprise the steps：
The alternating current that onboard generators send is converted to unidirectional current by S1.AC/DC modules, and is exported and become to DC/DC multichannels partial pressure
Mold changing block and battery module；
S2. when airborne power supply underload is run, energy-storage module absorbs electric energy from AC/DC modules, transports in airborne power supply overload
During row, energy-storage module is powered to DC/DC multichannel partial pressure conversion modules；
S3.DC/DC multichannel partial pressures conversion module provides stable voltage to multichannel loading.
2. the method described in claim 1, it is characterised in that in S1, the alternating current that onboard generators are sent by AC/DC modules
When being converted to unidirectional current, it is controlled using fault tolerant control method, the method comprises the steps：
S11., when each two-way switch pipe normal work in rectification stage circuit, the space vector modulation of input current is taken based on
Strategy；
S12. when with rectification stage circuit direct bus bar side anode connection certain two-way switch pipe occur drive signal lose or
During person's open circuit breakage failure, the drive signal of the two-way switch pipe for breaking down is switched to S immediately1；Two-way opened when failure
When the input phase voltage connect by pass pipe is that whole space vector sector is positive maximum, following process is done to the sector modulated signal：
S1Permanent open-minded, two down tubes not broken down in rectification stage circuit are open-minded in such a way：Before the space vector sector
Half time, the two-way switch being connected with input phase voltage absolute value larger are first open-minded, and another two-way switch Guan Ze exists
The latter half of the space vector sector is open-minded；The modulated signal of other sectors of rectification stage circuit is not processed；
When drive signal loss occurs in certain two-way switch pipe of the negative terminal connection with rectification stage circuit direct bus bar side or opens
During the bad failure of path loss, the drive signal of the two-way switch pipe for breaking down is switched to S immediately2；When the switching tube of failure connected
Input phase voltage when being that whole space vector sector negative sense is maximum, do following process to the sector modulated signal：S2It is permanent open-minded,
The two upper pipes not broken down in rectification stage circuit are open-minded in such a way：In the space vector sector front half section time,
The two-way switch being connected with input phase voltage absolute value larger is first open-minded, and another two-way switch Guan Ze is in the space vector
The latter half of sector is open-minded；The modulated signal of other sectors of rectification stage circuit is not processed.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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