CN108429497A - A kind of switch reluctance generator, which is improved oneself, encourages high pressure converter system - Google Patents
A kind of switch reluctance generator, which is improved oneself, encourages high pressure converter system Download PDFInfo
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- CN108429497A CN108429497A CN201810242668.5A CN201810242668A CN108429497A CN 108429497 A CN108429497 A CN 108429497A CN 201810242668 A CN201810242668 A CN 201810242668A CN 108429497 A CN108429497 A CN 108429497A
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- switching tube
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- inductance
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
- H02P9/26—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices
- H02P9/30—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices using semiconductor devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
- H02P9/38—Self-excitation by current derived from rectification of both output voltage and output current of generator
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
A kind of switch reluctance generator, which is improved oneself, encourages high pressure converter system, it is made of three unsteady flow branches and isolated buck DC/DC current transformers, three unsteady flow branch inputs are in parallel, output end is connected, to obtain higher voltage output, in each unsteady flow branch where the part that excitation is strengthened is distributed in each phase winding respectively, to give up individual field power supply, the advantages of improving system reliability and efficiently using switched reluctance machines, since input terminal voltage is far below output end series connection total voltage, internal each device is resistance to be forced down, whole switching tube switching frequencies are in middle low-frequency range simultaneously, it is lost low；This system is relatively more suitable for the current transformer of all kinds of switch reluctance generators, when especially facing high voltage load or grid-connected demand.
Description
Technical field
The present invention relates to power fields, and in particular to a kind of high voltage using switch reluctance generator from enhanced excitation and
The converter system and its control method of high voltage output.
Background technology
Switched reluctance machines are simple in structure firm, and manufacturing cost is cheap, and without winding, without permanent magnet on rotor, reliability is high；
As generator in application, a wherein phase winding, which does not work not, influences the power generation output services of other phase windings, fault-tolerance is strong, tool
Have broad application prospects.
Direct current transportation in recent years is increasingly subject to the attention of power department, and just tool is young in some areas for the DC grid of local
Thus shape, high pressure, super-pressure, extra-high voltage direct-current transmission and grid-connected also in development, has also derived more and more load equipments
Directly DC power supply is used to power.
Switch reluctance generator is generally placed in by 3-5 phase winding on stator, according to salient pole between rotor and groove
Relative position determines the phase winding being powered, and is generally divided into excitation and two big stages of power generation when work per phase winding, intermediate when necessary
It is re-introduced into freewheeling period, the excitation stage is the electric energy storage magnetic energy that motor phase windings absorb external field power supply, and follow-up basis turns
Sub- relative stator position terminates the excitation stage and enters power generating stage, and the magnetic energy stored in phase winding is converted into electric energy output, afterflow
The introducing in stage is in order to meet the power generating stage initial current demand of bigger.
The excitation of switch reluctance generator, afterflow, power generation will be controlled around the operation for the convertor circuit for connecting its winding
Realize there is no winding convertor circuit, switch reluctance generator is naturally without in all senses；In view of under most occasions to outlet side
The demand of high voltage, if it is possible to realize the function of boosting in winding convertor circuit, then certainly will have very much practical significance, together
When, if the pressure resistance of each switching tube keeps lower level, more there is realistic meaning.
When such as needing the operating modes such as variable speed generation operating mode or constant speed but starting, the fast reaction in excitation stage and hair
Electricity, the needs of maximum generation efficiency etc., when excitation wish that according to actual condition and electric energy output requirement excitation voltage can be adjusted, especially
It is below base speed when section, it would be desirable to which the short time faster establishes exciting current, i.e. enhanced excitation ability；But,
Some current existing enhanced excitation modes generally require individually to increase the special field power supply realization with controlled tr tube,
The reliability for reducing system increases the complexity of control, and when field power supply breaks down, whole switching magnetic-resistance hair
Motor cannot run shutdown so that the switch reluctance generator advantage for itself having power generation high fault freedom can not be played
Come, if realizing enhanced excitation inside the unsteady flow branch of every phase winding, this problem is not present.
The stability in the field power supply source of switch reluctance generator, separate excitation type is good but reliability is low and increases maintenance workers
It measures；Problem above is not present in traditional self-excitation type, but voltage and current fluctuation is larger, in order to reduce interference, field power supply end
Applying isolation link then can preferably inhibit to interfere, while the advantages of possess separate excitation type again.
Voltage is increased after generating set power generation to adapt to load or high voltage power transmission, this is power generation common situation, past
Toward needing special booster system to realize, in switch reluctance generator system field, more switch reluctance generator hairs are had
Concatenated pattern is relatively independent when generating electricity in view of each phase winding of switch reluctance generator to improve output total voltage after electricity output
Property, in fact every switch reluctance generator has the ability for realizing that output end series connection increases voltage.
Controlled tr tube is be unable to do without in converter system, switching tube is fewer, then reliability is higher, and loss is lower, and control is simpler
Singly, bigger is lost in switching tube when HF switch, and industry generally requires switching tube dosage few as possible, can really greatly reduce out
Close switching loss when pipe work.
In electronic power conversion system, the switching loss of switching tube is a big problem in HF switch, is except reducing
System efficiency certainly will burn out switching tube and cause more serious consequence if a large amount of thermal energy due to frequently switching on generation dissipate not in time,
This has been the important topic of modern power electronic engineering field.
Invention content
According to above background technology, present invention proposes a kind of independent nothings of each phase winding of switch reluctance generator to open
Close the highly reliable of pipe enhanced excitation, automatic charging accumulator separate excitation, high output voltage, low pressure-resistant low switching frequency switching tube etc.
Property, low cost simple converter system structure and its control method.
The technical scheme is that：
A kind of switch reluctance generator, which is improved oneself, encourages high pressure converter system, by the first unsteady flow branch, the second unsteady flow branch, third
Unsteady flow branch, isolated buck DC/DC current transformers composition, technical characteristic is the first-class branch, the second unsteady flow branch
Road, the third unsteady flow branch respectively input both ends and are connected in parallel, and connect with isolated buck DC/DC current transformers output both ends
Connect, the first unsteady flow branch, the second unsteady flow branch, third unsteady flow branch are respectively exported after both ends are connected in series with and are exported, and be isolated
It is depressured DC/DC current transformers input both ends connection；
First unsteady flow branch route first switch pipe, second switch pipe, third switching tube, the 4th switching tube, the first accumulator,
First inductance, the second inductance, the first diode, the second diode, the first capacitor, the second capacitor, third capacitor, first
Phase winding forms, and technical characteristic is that the first switch tube anode inputs positive terminal, first switch as the first unsteady flow branch
Tube cathode connects first battery positive voltage and first inductance one end, and the first inductance other end connects the one or two pole
Tube anode and first capacitor anode, the first diode cathode connect second inductance one end and second capacitor
Anode, the second inductance other end connect the first capacitor anode, the second switch tube anode, it is described 4th switch tube cathode,
The third capacitor anode, first phase winding one end, and as the first unsteady flow branch output negative pole end, the 4th switching tube
Anode connects the first phase winding other end, third switch tube anode, second diode anode, the second diode cathode
Third capacitor anode is connected, and as the first unsteady flow branch output cathode end, second switch tube cathode, third switching tube are cloudy
Pole, the first battery terminal negative, the connection of the second capacitor anode simultaneously input negative pole end as the first unsteady flow branch；
Second unsteady flow branch route the 5th switching tube, the 6th switching tube, the 7th switching tube, the 8th switching tube, the second accumulator,
Third inductance, the 4th inductance, third diode, the 4th diode, the 4th capacitor, the 5th capacitor, the 6th capacitor, second
Phase winding forms, and technical characteristic is that the 5th switch tube anode inputs positive terminal, the 5th switch as the second unsteady flow branch
Tube cathode connects second battery positive voltage and third inductance one end, and the third inductance other end connects the three or two pole
Tube anode and the 4th capacitor anode, third diode cathode connect described 4th inductance one end and the 5th capacitor
Anode, the 4th inductance other end connect the 4th capacitor anode, it is described 6th switch tube anode, it is described 8th switch tube cathode,
6th capacitor anode, second phase winding one end, and as the second unsteady flow branch output negative pole end, the 8th switching tube
Anode connects the second phase winding other end, the 7th switch tube anode, the 4th diode anode, the 4th diode cathode
The 6th capacitor anode is connected, and as the second unsteady flow branch output cathode end, the 6th switch tube cathode, the 7th switching tube are cloudy
Pole, the second battery terminal negative, the connection of the 5th capacitor anode simultaneously input negative pole end as the second unsteady flow branch；
Third unsteady flow branch route the 9th switching tube, the tenth switching tube, the 11st switching tube, the 12nd switching tube, third and stores
Battery, the 5th inductance, the 6th inductance, the 5th diode, the 6th diode, the 7th capacitor, the 8th capacitor, the 9th capacitance
Device, third phase winding composition, technical characteristic are that the 9th switch tube anode inputs positive terminal as third unsteady flow branch,
9th switch tube cathode connects the third battery positive voltage and described 5th inductance one end, described in the connection of the 5th inductance other end
5th diode anode and the 7th capacitor anode, the 5th diode cathode connect described 6th inductance one end and described the
Eight capacitor anodes, the 7th capacitor anode of the 6th inductance other end connection, the tenth switch tube anode, the described 12nd are opened
Tube cathode, the 9th capacitor anode, third phase winding one end are closed, and as third unsteady flow branch output negative pole end,
The 12nd switch tube anode connection third phase winding other end, the 11st switch tube anode, the 6th diode anode,
6th diode cathode connects the 9th capacitor anode, and as third unsteady flow branch output cathode end, the tenth switch tube cathode,
11st switch tube cathode, third battery terminal negative, the connection of the 8th capacitor anode simultaneously input cathode as third unsteady flow branch
End；
First accumulator, the second accumulator, third accumulator are identical, and the output of isolated buck DC/DC current transformers is straight
Galvanic electricity pressure is equal to the rated voltage of the first accumulator, the second accumulator, third accumulator, first switch pipe, the 5th switching tube, the
Nine switching tubes are identical, and the first inductance, third inductance, the 5th inductance are identical, the first capacitor, the 4th capacitor,
Seven capacitors are identical, and the first diode, third diode, the 5th diode are identical, the second inductance, the 4th inductance,
6th inductance is identical, and the second capacitor, the 5th capacitor, the 8th capacitor are identical, second switch pipe, the 6th switch
Pipe, the tenth switching tube are identical, and third switching tube, the 7th switching tube, the 11st switching tube are identical, the 4th switching tube,
8th switching tube, the 12nd switching tube are identical, and the second diode, the 4th diode, the 6th diode are identical, third
Capacitor, the 6th capacitor, the 9th capacitor are identical.
A kind of switch reluctance generator of the present invention, which is improved oneself, encourages the control method of high pressure converter system and is：
Whole switching tubes of unsteady flow branch are in off-state where it when each phase winding need not devote oneself to work, according to
Switch reluctance generator operation logic and its rotor position information：When the first phase winding needs to devote oneself to work, third switching tube
It is closed conducting, initially enters the excitation stage, the first phase winding both end voltage is its excitation voltage；Third is opened at the end of the excitation stage
It closes pipe to disconnect, if detecting that the first phase winding electric current is not up to desirable value at the end of the excitation stage, is closed at the 4th and opens
Close pipe enter freewheeling period until the first phase winding electric current reach desirable value or the first phase winding electric current be not up to desirable value but
The freewheeling period time reaches upper limit value, and freewheeling period terminates to export electricity automatically into power generating stage after i.e. the 4th switching tube disconnects
Energy；If detecting that the first phase winding electric current reaches desirable value or the excitation stage is not finished but the first phase at the end of the excitation stage
Winding current has reached desirable value, then turns off and directly export electric energy automatically into power generating stage after third switching tube, and at this time the 4th
Switching tube is off always；After the first phase winding works, when other phase windings work, where the first phase winding
The first unsteady flow branch second switch pipe be closed conducting, be closed conducting time adjusted according to the requirement to excitation voltage value
Section；
Similarly, when the second phase winding needs to devote oneself to work, the 7th switching tube is closed conducting, initially enters the excitation stage,
Second phase winding both end voltage is its excitation voltage；The 7th switching tube disconnects at the end of the excitation stage, if the excitation stage terminates
When detect that the second phase winding electric current is not up to desirable value, then be closed at the 8th switching tube and enter freewheeling period until the second phase
Winding current reaches desirable value or the second phase winding electric current is not up to desirable value but the freewheeling period time reaches upper limit value, afterflow
Stage terminates to export electric energy automatically into power generating stage after i.e. the 8th switching tube disconnects；If detecting at the end of the excitation stage
Two-phase winding electric current reaches desirable value or the excitation stage is not finished but the second phase winding electric current has reached desirable value, then turns off
Electric energy directly is exported automatically into power generating stage after seven switching tubes, the 8th switching tube is off always at this time；When second
After phase winding works, when other phase windings work, the 6th switching tube of the second unsteady flow branch where the second phase winding closes
Conducting is closed, the time for being closed conducting is adjusted according to the requirement to excitation voltage value；
Similarly, when third phase winding needs to devote oneself to work, the 11st switching tube is closed conducting, initially enters excitation rank
Section, third phase winding both end voltage are its excitation voltage；The 11st switching tube disconnects at the end of the excitation stage, if the excitation stage
At the end of detect that third phase winding current is not up to desirable value, then be closed at the 12nd switching tube enter freewheeling period until
Third phase winding current reaches desirable value or third phase winding current is not up to desirable value but the freewheeling period time reaches the upper limit
Value, freewheeling period terminate to export electric energy automatically into power generating stage after i.e. the 12nd switching tube disconnects；If the excitation stage terminates
When detect that third phase winding current reaches desirable value or the excitation stage is not finished but needed for third phase winding current has reached
Value directly exports electric energy after then turning off the 11st switching tube automatically into power generating stage, and the 12nd switching tube is in always at this time
Off-state；After third phase winding works, when other phase windings work, the third unsteady flow branch where third phase winding
The tenth switching tube be closed conducting, be closed conducting time adjusted according to the requirement to excitation voltage value；
In operation when detecting that the first battery electric energy is less than lower limiting value, it is closed first switch pipe, by isolated buck DC/
DC current transformers charge to the first accumulator, and first switch pipe is disconnected after full electricity；Similarly, the second accumulator and third accumulator encounter
When same problem, charging is provided by isolated buck DC/DC current transformers.
The technique effect of the present invention mainly has：
(1) field power supply is provided by separate excitation accumulator (the first accumulator, the second accumulator, third accumulator), absorbed
Such as stability was good, power quality is high the advantages of separate excitation type switch reluctance generator, simultaneously because when separate excitation accumulator short of electricity
Automatically it receives output end power to give to charge, the manual maintenances such as battery will often be replaced by having evaded separate excitation type switch reluctance generator
Workload improves intelligent level.
(2) Magnetic isolation link is carried in isolated buck DC/DC current transformers, to generate electricity end and excitation end is isolated, is reduced
Interfering with each other property.
(3) present invention does not use the pattern of normal procedure intelligentization self-excitation field power supply, the function of enhanced excitation to be included into
In unsteady flow branch inside respective phase winding, the reliability of system is substantially increased, because of routinely excitation mode, although only
The field power supply of a special change excitation voltage is needed to provide excitation, but when the field power supply failure cannot work, entirely
Switch reluctance generator unit must be stopped, and switch reluctance generator self character makes its that respectively phase winding can be independent
The advantage of power generation operation can not show, after adopting the structure of the invention, using the higher isolated buck DC/DC current transformers of reliability
After module, the part for becoming excitation, that is, enhanced excitation is included in the unsteady flow branch of respective phase winding, and in the mistake of enhanced excitation
It is participated in without switching tube in journey, substantially increases reliability.
(4) it is strong encourage in vital second switch pipe (the first unsteady flow branch), the 6th switching tube (the second unsteady flow branch),
The duty cycle of switching of tenth switching tube (third unsteady flow branch) is most important, and the period for being closed conducting is unsteady flow branch where it
Road does not work period of (phase winding is not at the either phases such as excitation, afterflow, power generation), and reliability is high, and its duty ratio is small
In one third, according to formula (1) as it can be seen that adjusting duty ratio, sizable enhanced excitation voltage range can get.
(5) system output is three unsteady flow branch output series connection where three-phase windings, and output voltage increases by three times；For
More than the switch reluctance generator of three-phase windings, scalability is extremely strong, and the more multi-output voltages multiplication of phase winding quantity is bigger.
(6) three accumulators such as first accumulator of input terminal of the present invention, their rated voltage are far below converter system
Output voltage, to which the pressure resistance of each device inside each unsteady flow branch is not high, the safety of equipment is more preferably.
(7) whole switching tubes are not necessarily to work under high frequency (KHZ or more) in structure of the invention, in power electronic system
The HF switch loss of middle electronic power switch pipe is always the worry of industry, in addition to reducing system effectiveness, since fever is severe
Caused switching tube damage is also big problem certainly will increase various radiators to radiate；The present invention is except the pressure resistance of each switching tube
Outside sinking low cost and raising safety, first switch pipe, the 5th switching tube, the 9th switching tube are to work as connected accumulator
Conducting is just closed when short of electricity, switching frequency is extremely low, and loss is even negligible, the 4th switching tube, the 8th switching tube, the tenth
The continued flow switch pipe of two switching tubes can just close when also only the input of electricity generation system mechanical energy input terminal is insufficient etc. under special operation conditions
Close conducting, generally normal off state；Remaining six switching tubes, switching frequency is related with generator speed, conventionally, three-phase
6/4 pole of winding (stator sextupole, rotor quadrupole) switch reluctance generator, even if at a high speed for example under 3000 revs/min, they
Switching frequency highest is also only hundreds of HZ.
Description of the drawings
A kind of switch reluctance generator that Fig. 1 show the present invention improves oneself and encourages high pressure converter system circuit structure diagram.
Specific implementation mode
The switch reluctance generator of the present embodiment is three-phase windings, is respectively M/N/P tri- by the sequence being distributed on stator
Phase winding, as shown in Fig. 1.
Attached drawing 1, which show a kind of switch reluctance generator of the present embodiment, improves oneself and encourages high pressure converter system circuit structure diagram, by
First unsteady flow branch 101, the second unsteady flow branch 102, third unsteady flow branch 103, isolated buck DC/DC current transformers 2 form, and first
Stream branch 101, the second unsteady flow branch 102, third unsteady flow branch 103 respectively input both ends be connected in parallel, and with isolated buck DC/
DC current transformers 2 export both ends connection, and the first unsteady flow branch 101, the second unsteady flow branch 102, third unsteady flow branch 103 respectively export
Both ends export after being connected in series with, and input both ends with isolated buck DC/DC current transformers 2 and connect；
First unsteady flow branch 101 by first switch pipe V1, second switch pipe V2, third switching tube V3, the 4th switching tube V4,
First accumulator X1, the first inductance L1, the second inductance L2, the first diode D1, the second diode D2, the first capacitor C1,
Two capacitor C2, third capacitor C3, the first phase winding M compositions, first switch pipe V1 anodes are defeated as the first unsteady flow branch 101
Enter positive terminal, first switch pipe V1 cathodes connect the first accumulator X1 anodes and first one end inductance L1, the first inductance L1 are another
End connection the first diode D1 anodes and the first capacitor C1 cathode, the first diode D1 cathodes connect second one end inductance L2 and
Second capacitor C2 anodes, the first capacitor C1 anodes of second inductance L2 other ends connection, second switch pipe V2 anodes, the 4th open
Close pipe V4 cathodes, third capacitor C3 cathode, first one end phase winding M, and as 101 output negative pole end of the first unsteady flow branch,
4th switching tube V4 anodes connection, the first phase winding M other ends, third switching tube V3 anodes, the second diode D2 anodes, second
Diode D2 cathodes connect third capacitor C3 anodes, and as 101 output cathode end of the first unsteady flow branch, second switch pipe V2
Cathode, third switching tube V3 cathodes, the first accumulator X1 cathode, the second capacitor C2 cathode connect and as the first unsteady flow branch
101 input negative pole ends；
Second unsteady flow branch 102 by the 5th switching tube V5, the 6th switching tube V6, the 7th switching tube V7, the 8th switching tube V8,
Second accumulator X2, third inductance L3, the 4th inductance L4, third diode D3, the 4th diode D4, the 4th capacitor C4,
Five capacitor C5, the 6th capacitor C6, the second phase winding N compositions, the 5th switching tube V5 anodes are defeated as the second unsteady flow branch 102
Enter positive terminal, the 5th switching tube V5 cathodes connect the second accumulator X2 anodes and the one end third inductance L3, third inductance L3 are another
End connection third diode D3 anodes and the 4th capacitor C4 cathode, third diode D3 cathodes connect the 4th one end inductance L4 and
5th capacitor C5 anodes, the 4th capacitor C4 anodes of the 4th inductance L4 other ends connection, the 6th switching tube V6 anodes, the 8th open
Close pipe V8 cathodes, the 6th capacitor C6 cathode, second one end phase winding N, and as 102 output negative pole end of the second unsteady flow branch,
8th switching tube V8 anodes connection, the second phase winding N other ends, the 7th switching tube V7 anodes, the 4th diode D4 anodes, the 4th
The 6th capacitor C6 anodes of diode D4 cathodes connection, and as 102 output cathode end of the second unsteady flow branch, the 6th switching tube V6
Cathode, the 7th switching tube V7 cathodes, the second accumulator X2 cathode, the 5th capacitor C5 cathode connect and as the second unsteady flow branch
102 input negative pole ends；
Third unsteady flow branch 103 is opened by the 9th switching tube V9, the tenth switching tube V10, the 11st switching tube V11, the 12nd
Close pipe V12, third accumulator X3, the 5th inductance L5, the 6th inductance L6, the 5th diode D5, the 6th diode D6, the 7th capacitance
Device C7, the 8th capacitor C8, the 9th capacitor C9, third phase winding P compositions, the 9th switching tube V9 anodes are as third unsteady flow branch
Road 103 inputs positive terminal, and the 9th switching tube V9 cathodes connect third accumulator X3 anodes and the 5th one end inductance L5, the 5th inductance
The L5 other ends connect the 5th diode D5 anodes and the 7th capacitor C7 cathode, and the 5th diode D5 cathodes connect the 6th inductance L6
One end and the 8th capacitor C8 anodes, the 7th capacitor C7 anodes of the 6th inductance L6 other ends connection, the tenth switching tube V10 sun
Pole, the 12nd switching tube V12 cathodes, the 9th capacitor C9 cathode, the one end third phase winding P, and as third unsteady flow branch 103
Output negative pole end, the 12nd switching tube V12 anodes connect the third phase winding P other ends, the 11st switching tube V11 anodes, the 6th
Diode D6 anodes, the 9th capacitor C9 anodes of the 6th diode D6 cathodes connection, and just as the output of third unsteady flow branch 103
Extremely, the tenth switching tube V10 cathodes, the 11st switching tube V11 cathodes, third accumulator X3 cathode, the 8th capacitor C8 cathode
It connects and inputs negative pole end as third unsteady flow branch 103；
First accumulator X1, the second accumulator X2, third accumulator X3 are identical, isolated buck DC/DC current transformers 2
Export the rated voltage that DC voltage is equal to the first accumulator X1, the second accumulator X2, third accumulator X3, first switch pipe
V1, the 5th switching tube V5, the 9th switching tube V9 are identical, the first inductance L1, third inductance L3, the 5th complete phases of inductance L5
Together, the first capacitor C1, the 4th capacitor C4, the 7th capacitor C7 are identical, the first diode D1, third diode D3,
5th diode D5 is identical, and the second inductance L2, the 4th inductance L4, the 6th inductance L6 are identical, the second capacitor C2,
Five capacitor C5, the 8th capacitor C8 are identical, second switch pipe V2, the 6th switching tube V6, the tenth complete phases of switching tube V10
Together, third switching tube V3, the 7th switching tube V7, the 11st switching tube V11 are identical, the 4th switching tube V4, the 8th switching tube
V8, the 12nd switching tube V12 are identical, and the second diode D2, the 4th diode D4, the 6th diode D6 are identical, the
Three capacitor C3, the 6th capacitor C6, the 9th capacitor C9 are identical.
All inductance are energy storage inductor in attached drawing 1；Except third capacitor C3, the 6th capacitor C6, the 9th capacitor C9
Remaining the whole capacitor of (output filtering and voltage support capacitor) outside are also energy-storage capacitor；First inductance L1, third electricity
Sense L3, the 5th inductance L5 function be to ensure that the electric current of correlation unsteady flow branch excitation input side is not interrupted, inductance value is answered larger
To meet the requirements；The effect of first diode D1, third diode D3, the 5th diode D5 are to prevent inductive current from flowing back；
The effect of second diode D2, the 4th diode D4, the 6th diode D6 is to prevent power generation output electric energy reflux.
Respectively whole switching tubes of place unsteady flow branch are in disconnection shape when M/N/P three-phase windings need not devote oneself to work
State, according to switch reluctance generator operation logic and its rotor position information：When the first phase winding M needs to devote oneself to work, the
Three switching tube V3 are closed conducting, initially enter the excitation stage, and the first phase winding M both end voltages are its excitation voltage；The excitation stage
At the end of third switching tube V3 disconnect, if detecting that the first phase winding M electric currents are not up to desirable value at the end of the excitation stage,
It is closed at the 4th switching tube V4 and enters freewheeling period until the first phase winding M electric currents reach desirable value or the first phase winding M
Electric current is not up to desirable value but the freewheeling period time reaches upper limit value, and it is automatic after disconnecting that freewheeling period terminates i.e. the 4th switching tube V4
Into power generating stage, via the second diode D2 power generation output electric energy；If detecting the first phase winding M at the end of the excitation stage
Electric current reaches desirable value or the excitation stage is not finished but the first phase winding M electric currents have reached desirable value, then turns off third switch
Electric energy directly is exported automatically into power generating stage after pipe V3, the 4th switching tube V4 is off always at this time；When the first phase
After winding M work, when other phase windings work, the second switch pipe of the first unsteady flow branch 101 where the first phase winding M
V2 can be closed conducting, and the time for being closed conducting is adjusted according to the requirement to excitation voltage value, at this time the first capacitor C1
It is in discharge mode with the second capacitor C2, is their charge mode accordingly during the V2 disconnections of second switch pipe；
According to the capacitance charge equilibrium principle and the first inductance L1 and second of the first capacitor C1 and the second capacitor C2
The inductance voltage-second balance principle of inductance L2 can obtain as follows when second switch pipe V2 and the 4th switching tube V4 are off-state
Formula：
UL=UC1+UC2=UX1/ (1-2D) (1)
In formula (1)：UL is excitation voltage average value when the i.e. excitation stage is connected in third switching tube V3 closures；UC1 and UC2
The respectively average voltage level of the first capacitor C1 and the second capacitor C2；UX1 is that 101 input terminal voltage of the first unsteady flow branch is
First accumulator X1 both end voltages；D is the duty cycle of switching of second switch pipe V2, is sent out based on the above switching mode and switching magnetic-resistance
The operation logic of motor, in practice D be less than one third, and in view of switch reluctance generator run in speed change that may be present
Degree operation, then its switch periods is also variation, it is seen then that if to keep excitation voltage constant, when rotary speed of generator group changes
When, this duty ratio will be adjusted, then can be by adjusting duty ratio when needing excitation voltage variation to adapt to more preferably demand for control
D realize, as long as also, duty ratio D be not zero, for relative input end voltage, output end, that is, excitation voltage certainly will obtain by force
Change, because of UL ＞ ＞ UX1；
Similarly, according to switch reluctance generator structural principle, when the second phase winding N, third phase winding P and its place unsteady flow
It is similar with 101 course of work of the first unsteady flow branch where the first phase winding M when branch needs to devote oneself to work, wherein：Second electric power storage
Pond X2 and third accumulator X3 corresponds to the first accumulator X1, third inductance L3 and the 5th inductance L5 and corresponds to the first inductance L1, and the 4th
Capacitor C4 and the 7th capacitor C7 corresponds to the first capacitor C1, third diode D3 and the 5th diode D5 and corresponds to the one or two pole
Pipe D1, the 5th capacitor C5 and the 8th capacitor C8 correspond to the second capacitor C2, the 4th inductance L4 and the 6th inductance L6 and correspond to the
Two inductance L2, the 6th switching tube V6 and the tenth switching tube V10 correspond to second switch pipe, the 7th switching tube V7 and the 11st switching tube
V11 corresponds to third switching tube V3, the 8th switching tube V8 and the 12nd switching tube V12 corresponds to the 4th switching tube V4, the 4th diode
D4 and the 6th diode D6 correspond to the second diode D2, and the 6th capacitor C6 and the 9th capacitor C9 correspond to third capacitor C3.
It is between the power generation output end third capacitor C3 of three unsteady flow branches, the 6th capacitor C6, the 9th capacitor C9
Series relationship has reached power generation output direct current to three times that total output voltage is single phase winding power generation output voltage
The result of three multiplication of pressure.
In operation when detecting that the first accumulator X1 electric energy is less than lower limiting value, it is closed first switch pipe V1, is dropped by isolation
It presses DC/DC current transformers 2 to the first accumulator X1 chargings, completely disconnects first switch pipe V1 after electricity；Similarly, the second accumulator X2 and
When three accumulator X3 encounter same problem, opened respectively via the 5th switching tube V5 and the 9th by isolated buck DC/DC current transformers 2
Pass pipe V9, which gives, to charge.
Although the embodiment of the present invention be three-phase windings switch reluctance generator, from attached drawing 1 as it can be seen that for four phases and its with
The switch reluctance generator of the upper number of phases, after being further added by new mutually isostructural unsteady flow branch and the series connection of input terminal parallel outputs
, the number of phases is more, and output voltage multiplication is higher；Based on this, switch magnetic of the present invention for four phases and its above winding quantity
Resistance generator should belong to same protection domain naturally.
Claims (2)
1. a kind of switch reluctance generator, which is improved oneself, encourages high pressure converter system, become by the first unsteady flow branch, the second unsteady flow branch, third
Flow branch, isolated buck DC/DC current transformers composition, technical characteristic is, the first-class branch, the second unsteady flow branch,
The third unsteady flow branch respectively inputs both ends and is connected in parallel, and is connect with isolated buck DC/DC current transformers output both ends,
First unsteady flow branch, the second unsteady flow branch, third unsteady flow branch are respectively exported after both ends are connected in series with and are exported, and and isolated buck
DC/DC current transformers input both ends connection；
First unsteady flow branch route first switch pipe, second switch pipe, third switching tube, the 4th switching tube, the first accumulator, first
Inductance, the second inductance, the first diode, the second diode, the first capacitor, the second capacitor, third capacitor, the first phase around
Group composition, technical characteristic are that the first switch tube anode inputs positive terminal as the first unsteady flow branch, and first switch pipe is cloudy
Pole connects first battery positive voltage and first inductance one end, and the first inductance other end connects the first diode sun
Pole and first capacitor anode, the first diode cathode are connecting second inductance one end and second capacitor just
Pole, the second inductance other end connect the first capacitor anode, the second switch tube anode, the 4th switch tube cathode, institute
Third capacitor anode, first phase winding one end are stated, and as the first unsteady flow branch output negative pole end, the 4th switching tube sun
Pole connects the first phase winding other end, third switch tube anode, second diode anode, and the second diode cathode connects
Connect third capacitor anode, and as the first unsteady flow branch output cathode end, second switch tube cathode, third switch tube cathode,
First battery terminal negative, the connection of the second capacitor anode simultaneously input negative pole end as the first unsteady flow branch；
Second unsteady flow branch route the 5th switching tube, the 6th switching tube, the 7th switching tube, the 8th switching tube, the second accumulator, third
Inductance, the 4th inductance, third diode, the 4th diode, the 4th capacitor, the 5th capacitor, the 6th capacitor, the second phase around
Group composition, technical characteristic are that the 5th switch tube anode inputs positive terminal as the second unsteady flow branch, and the 5th switching tube is cloudy
Pole connects second battery positive voltage and third inductance one end, and the third inductance other end connects the third diode sun
Pole and the 4th capacitor anode, third diode cathode are connecting described 4th inductance one end and the 5th capacitor just
Pole, the 4th inductance other end connect the 4th capacitor anode, the 6th switch tube anode, the 8th switch tube cathode, institute
The 6th capacitor anode, second phase winding one end are stated, and as the second unsteady flow branch output negative pole end, the 8th switching tube sun
Pole connects the second phase winding other end, the 7th switch tube anode, the 4th diode anode, and the 4th diode cathode connects
Connect the 6th capacitor anode, and as the second unsteady flow branch output cathode end, the 6th switch tube cathode, the 7th switch tube cathode,
Second battery terminal negative, the connection of the 5th capacitor anode simultaneously input negative pole end as the second unsteady flow branch；
Third unsteady flow branch route the 9th switching tube, the tenth switching tube, the 11st switching tube, the 12nd switching tube, third accumulator,
5th inductance, the 6th inductance, the 5th diode, the 6th diode, the 7th capacitor, the 8th capacitor, the 9th capacitor, third
Phase winding forms, and technical characteristic is that the 9th switch tube anode inputs positive terminal, the 9th switch as third unsteady flow branch
Tube cathode connects the third battery positive voltage and described 5th inductance one end, and the 5th inductance other end connects the five or two pole
Tube anode and the 7th capacitor anode, the 5th diode cathode connect described 6th inductance one end and the 8th capacitor
Anode, it is cloudy that the 6th inductance other end connects the 7th capacitor anode, the tenth switch tube anode, the 12nd switching tube
Pole, the 9th capacitor anode, third phase winding one end, and as third unsteady flow branch output negative pole end, the 12nd
The switch tube anode connection third phase winding other end, the 11st switch tube anode, the 6th diode anode, the six or two
Pole pipe cathode connects the 9th capacitor anode, and as third unsteady flow branch output cathode end, the tenth switch tube cathode, the 11st
It switchs tube cathode, third battery terminal negative, the connection of the 8th capacitor anode and inputs negative pole end as third unsteady flow branch；
First accumulator, the second accumulator, third accumulator are identical, the output direct current of isolated buck DC/DC current transformers
Equal to the rated voltage of the first accumulator, the second accumulator, third accumulator, first switch pipe, the 5th switching tube, the 9th open pressure
Pass pipe is identical, and the first inductance, third inductance, the 5th inductance are identical, the first capacitor, the 4th capacitor, the 7th electricity
Container is identical, and the first diode, third diode, the 5th diode are identical, the second inductance, the 4th inductance, the 6th
Inductance is identical, and the second capacitor, the 5th capacitor, the 8th capacitor are identical, second switch pipe, the 6th switching tube,
Tenth switching tube is identical, and third switching tube, the 7th switching tube, the 11st switching tube are identical, the 4th switching tube, the 8th
Switching tube, the 12nd switching tube are identical, and the second diode, the 4th diode, the 6th diode are identical, third capacitance
Device, the 6th capacitor, the 9th capacitor are identical.
It encourages the control method of high pressure converter system 2. a kind of switch reluctance generator is improved oneself according to claim 1 and is：
Whole switching tubes of unsteady flow branch are in off-state where it when each phase winding need not devote oneself to work, according to switch
Reluctance generator operation logic and its rotor position information：When the first phase winding needs to devote oneself to work, third switching tube is closed
Conducting, initially enters the excitation stage, and the first phase winding both end voltage is its excitation voltage；Third switching tube at the end of the excitation stage
It disconnects, if detecting that the first phase winding electric current is not up to desirable value at the end of the excitation stage, is closed at the 4th switching tube
Into freewheeling period until the first phase winding electric current reaches desirable value or the first phase winding electric current is not up to desirable value but afterflow
Phases-time reaches upper limit value, and freewheeling period terminates to export electric energy automatically into power generating stage after i.e. the 4th switching tube disconnects；Such as
Fruit detects that the first phase winding electric current reaches desirable value or the excitation stage is not finished but the first phase winding at the end of the excitation stage
Electric current has reached desirable value, then directly exports electric energy automatically into power generating stage after turning off third switching tube, at this time the 4th switch
Pipe is off always；After the first phase winding works, when other phase windings work, the where the first phase winding
The second switch pipe of one unsteady flow branch is closed conducting, and the time for being closed conducting is adjusted according to the requirement to excitation voltage value；.
Similarly, when the second phase winding needs to devote oneself to work, the 7th switching tube is closed conducting, initially enters the excitation stage, and second
Phase winding both end voltage is its excitation voltage；The 7th switching tube disconnects at the end of the excitation stage, if examined at the end of the excitation stage
It measures the second phase winding electric current and is not up to desirable value, be then closed at the 8th switching tube and enter freewheeling period until the second phase winding
Electric current reaches desirable value or the second phase winding electric current is not up to desirable value but the freewheeling period time reaches upper limit value, freewheeling period
Terminate to be to export electric energy automatically into power generating stage after the 8th switching tube disconnects；If detecting the second phase at the end of the excitation stage
Winding current reaches desirable value or the excitation stage is not finished but the second phase winding electric current has reached desirable value, then turns off the 7th and open
Guan Guanhou directly exports electric energy automatically into power generating stage, and the 8th switching tube is off always at this time；When the second phase around
After group work, when other phase windings work, the 6th switching tube closure of the second unsteady flow branch where the second phase winding is led
Logical, the time for being closed conducting is adjusted according to the requirement to excitation voltage value；.
Similarly, when third phase winding needs to devote oneself to work, the 11st switching tube is closed conducting, initially enters the excitation stage, the
Three-phase windings both end voltage is its excitation voltage；The 11st switching tube disconnects at the end of the excitation stage, if the excitation stage terminates
When detect that third phase winding current is not up to desirable value, then be closed at the 12nd switching tube and enter freewheeling period until third
Phase winding electric current reaches desirable value or third phase winding current is not up to desirable value but the freewheeling period time reaches upper limit value, continues
The stream stage terminates to export electric energy automatically into power generating stage after i.e. the 12nd switching tube disconnects；If excitation detects at the end of the stage
Reach desirable value to third phase winding current or the excitation stage is not finished but third phase winding current has reached desirable value, then closes
Electric energy directly is exported automatically into power generating stage after disconnected 11st switching tube, the 12nd switching tube is in disconnects shape always at this time
State；After third phase winding works, when other phase windings work, the tenth of third unsteady flow branch where third phase winding the
Switching tube is closed conducting, and the time for being closed conducting is adjusted according to the requirement to excitation voltage value；
In operation when detecting that the first battery electric energy is less than lower limiting value, it is closed first switch pipe, is become by isolated buck DC/DC
Stream device charges to the first accumulator, and first switch pipe is disconnected after full electricity；Similarly, the second accumulator and third accumulator encounter identical
When problem, charging is provided by isolated buck DC/DC current transformers.
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| CN110341503A (en) * | 2019-06-03 | 2019-10-18 | 中国矿业大学 | A kind of integrated plug-in hybrid-power automobile driving system for switched reluctance |
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| CN110535384A (en) * | 2019-08-20 | 2019-12-03 | 中国计量大学 | One kind going straight up to pressure double-fed switch reluctance generator converter system |
| CN110557064A (en) * | 2019-08-20 | 2019-12-10 | 中国计量大学 | Wide-range excitation power generation and automatic double-charging switched reluctance generator current transformation system |
| CN110677084A (en) * | 2019-10-17 | 2020-01-10 | 中国计量大学 | Direct-voltage-boosting self-excitation-changing switched reluctance generator current transformation system |
| CN113472263A (en) * | 2021-07-12 | 2021-10-01 | 中国矿业大学 | Fault-tolerant power converter for power generation of switched reluctance motor and fault-tolerant method |
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| CN110474583B (en) * | 2019-08-20 | 2021-02-26 | 中国计量大学 | Direct-boost isolation-free double-fed high-speed switched reluctance generator current conversion system |
| CN110677084A (en) * | 2019-10-17 | 2020-01-10 | 中国计量大学 | Direct-voltage-boosting self-excitation-changing switched reluctance generator current transformation system |
| CN113472263A (en) * | 2021-07-12 | 2021-10-01 | 中国矿业大学 | Fault-tolerant power converter for power generation of switched reluctance motor and fault-tolerant method |
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