CN106602561A - Traction power supply system power source device - Google Patents
Traction power supply system power source device Download PDFInfo
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- CN106602561A CN106602561A CN201611147469.3A CN201611147469A CN106602561A CN 106602561 A CN106602561 A CN 106602561A CN 201611147469 A CN201611147469 A CN 201611147469A CN 106602561 A CN106602561 A CN 106602561A
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 27
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- 238000011084 recovery Methods 0.000 claims description 12
- 239000007858 starting material Substances 0.000 claims description 11
- 239000003990 capacitor Substances 0.000 claims description 7
- 239000013307 optical fiber Substances 0.000 claims description 3
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- 230000003321 amplification Effects 0.000 abstract description 3
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- 230000003137 locomotive effect Effects 0.000 description 20
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Classifications
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- 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
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/01—Arrangements for reducing harmonics or ripples
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M3/00—Feeding power to supply lines in contact with collector on vehicles; Arrangements for consuming regenerative power
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- 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
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
- H02J3/12—Circuit arrangements for AC mains or AC distribution networks for adjusting voltage in AC networks by changing a characteristic of the network load
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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Abstract
The present invention relates to a traction power supply system power source device. The traction power supply system power source device comprises a power source bus-bar, a start switch, a multi-winding transformer and a power conversion circuit. The traction power supply system power source device is characterized in that the power source bus-bar is connected with the primary side of the multi-winding transformer through the start switch; the power conversion circuit comprises a plurality of power modules of which the output ends are in series connection; the number of the windings of the secondary side of the multi-winding transformer is equal to the number of the power modules; the windings of the secondary side of the multi-winding transformer are in one-to-one corresponding connection with the input ends of the power modules; and the output end of the first power module and the output end of the last power module are the output ends of the power conversion circuit. With the traction power supply system power source device of the invention adopted, resonance and harmonic amplification phenomena can be avoided; over-current occurs in a process in which power is supplied after instantaneous power failure can be avoided; and the high-reliability operation of a power source can be ensured.
Description
Technical field
The present invention relates to a kind of electric power system supply unit, and in particular to a kind of railway electric locomotive traction power supply power supply dress
Put.
Background technology
The features such as electrically-driven car has that power is big, can comprehensively utilize the various energy, energy utilization rate is high, in railway system
It is used widely in system.In recent years, the construction speed and scale of China's electric railway is just developed with the situation in the leading world.
Conventional electrical railway locomotive traction substation is biphase in addition to single-phase wiring, all（Out-phase）Power supply, power supply
A single phase power supply power supply is constituted using arbitrarily biphase in power system routine three-phase transformer, interstructural difference is determined leads
Draw the asymmetrical three-phase of substation topology structure, traction load has in operation negative-sequence current to inject electrical network.Electric locomotive exists
Acceleration, constant speed, coasting, braking under different road conditions, different weather, the power and electric current stochastic volatility of traction load is very big.And
And the AC-to-DC rectification type locomotive that adopts in a large number of China and AC-DC-AC type locomotive, current on line side contains larger harmonic componentss.
The harmonic wave of traction load has the characteristics of amplitude fluctuations are big, and PHASE DISTRIBUTION is extensive.In addition electric locomotive is mobile load, with row
The difference of car position, by the different power transformations different separate acquirement power supplys in one's power of power system.In order to electric energy is reliably defeated
The locomotive run at high speed is given, modern trunk circuit traction is generally flowed using overhead contact line, the pattern of traveling rail return current.
These characteristics of electrization railway draught load, determine the characteristics of its power quality problem is more serious：Power factor is low, disturbs
It is dynamic frequent, and the power quality problems such as harmonic wave, negative phase-sequence, voltage pulsation are produced to utility network.And the quality of power supply is directly closed
It is tied to for, the safety in production of electric unit and economic benefit.
The harmonic wave produced in electric locomotive operation there is a possibility that relay protection and automaton occur malfunction and tripping, increase
The error of metering device, while causing the inductance of electrical network, electric capacity that resonance occurs, makes Harmonics amplification.When system resonance, harmonic wave electricity
Pressure is raised, electric current increase will damage the equipment such as shnt capacitor, power cable, motor, initiating system accident.Make power transformer
The electrical equipments such as device, capacitor, electric rotating machine produce additional thermal losses, accelerate insulation ag(e)ing, shorten equipment life.It can be affected
The normal production of his user, interferes to communication line.
It is difficult to obtain satisfied effect with methods such as traditional compensation, filtering, its reason is：（1）Using electric power electricity
Submethod energy compensating reactive power electric current, negative-sequence current and low-order harmonic electric current, but compensation is difficult to higher harmonic current, and
During equipment works, due to the high-speed switch of power device, a large amount of harmonic waves, i.e. equipment itself can be produced again and is introduced
One new harmonic source.（2）LC wave filter may only filter the harmonic wave of single-frequency, to filter multiple harmonic waves, need multiple
Wave filter is in parallel.On the one hand, if the harmonic frequency of harmonic source there occurs change（As different locomotive converter switching frequencies has
Difference）, then filter effect will have a greatly reduced quality.On the other hand, because accessing for wave filter can produce new mode of resonance again, by certain
The Harmonics amplification of a little frequencies.（3）Based on the equipment of compensation, under steady-state working condition, preferable compensation effect can be obtained, and
It is quite different for the operating mode of frequent change.Compensation equipment must be operationally first to detect the required electric current for compensating, Ran Houzai
Produce corresponding electric current output.In other words, equipment always has an intrinsic response time, i.e., in harmonic wave, negative phase-sequence or idle product
Raw and end moment, compensation cannot be accomplished, inject an interference pulse will to electrical network.If working condition is frequent
Change, this will form a series of impulse disturbances.This in substance form a wide spectrum harmonic source.3 points of decisions of the above
The measures such as traditional compensation, filtering are difficult to obtain satisfied effect.
The content of the invention
The purpose of the present invention is in view of the shortcomings of the prior art, there is provided a kind of tractive power supply system supply unit.
The purpose of the present invention is realized by following technological means：
Power source bus, activate switch, multiwinding transformer, power conversion circuit, power source bus by activate switch connection it is many around
The former limit of group transformator, power conversion circuit includes the power model of multiple outfans series connection, the secondary of multiwinding transformer around
Group quantity is equal to the quantity of power model, and the winding of secondary connects one to one with the input of power model, first power
The outfan of the outfan of module and last power model is the outfan of power conversion circuit.
Preferably, activate switch includes first switch, second switch, starter, and second switch is connected with starter
It is in parallel with first switch afterwards.
The power model includes rectification circuit, energy release circuit, inverter circuit, unit control circuit and drives electricity
Road, rectification circuit input end is the input of power model, and rectification circuit connection energy release circuit, energy release circuit connects
Inverter circuit, unit control circuit feeder ear connection rectification circuit, the control signal of unit control circuit is passed by drive circuit
It is delivered to inverter circuit.
The rectification circuit includes diode one, diode two, diode three, diode four, the pole of diode five and two
Pipe six；The cathode terminal of diode one is connected with the cathode terminal of diode three and the cathode terminal of diode five, the anode of diode one
End is connected with the cathode terminal of diode two, the anode tap of the anode tap of diode two and the anode tap of diode four and diode six
Connection, the cathode terminal of diode four is connected with the anode tap of diode three, the cathode terminal of diode six and the anode of diode five
End connection, the anode tap of diode six is connected by the first electric capacity with the cathode terminal of diode five.
The energy release circuit includes the 7th fast recovery diode, energy expenditure resistance and the 5th IGBT pipe；Energy
One end of amount dead resistance is connected with the cathode terminal of the first capacitance connection diode five, the other end of energy expenditure resistance and the 5th
The collector terminal connection of IGBT pipes, the emitter terminal of the 5th IGBT pipes and the anode tap of diode two, the anode tap of diode four
And the anode tap connection of diode six；7th fast recovery diode is attempted by the two ends of energy expenditure resistance, and the 7th is quick
The anode tap of recovery diode is connected with the collector terminal of the 5th IGBT pipes, the cathode terminal and first of the 7th fast recovery diode
The cathode terminal connection of capacitance connection diode five；The gate terminal of the 5th IGBT pipes is connected with the outfan of drive circuit, the drive
The pwm signal of dynamic circuit output drives the conducting state of the 5th IGBT pipes, to discharge the energy having on dc bus.Work as machine
During car quick deceleration, the kinetic energy of locomotive is converted into that electric energy is supply-injected, and energy release circuit need to consume this portion of energy, with
Ensure power safety operation.In the case where electrical network is permitted, also can by locomotive brake when the energy released send electrical network back to, it is at this moment whole
Stream electric current is biphase rectification circuit, is made up of three phase inverter bridge, at this moment no longer needs energy release circuit.
The inverter circuit includes IGBT pipes, the 2nd IGBT pipes, the 3rd IGBT pipes and the 4th IGBT pipes；First
The emitter terminal of IGBT pipes is connected with the collector terminal of the 2nd IGBT pipes, collector terminal and the 3rd IGBT pipes of an IGBT pipes
Collector terminal connect, and collector terminal, the collector terminal of the 3rd IGBT pipes of an IGBT pipes with the cathode terminal of diode five
Connection；The emitter terminal of the 2nd IGBT pipes is connected with the emitter terminal of the 4th IGBT pipes, and the emitter terminal of the 2nd IGBT pipes with
The emitter terminal connection of the 5th IGBT pipes, the collector terminal of the 4th IGBT pipes is connected with the emitter terminal of the 3rd IGBT pipes；First
The gate terminal of IGBT pipes, the gate terminal, the gate terminal of the 3rd IGBT pipes and the 4th IGBT pipes of the 2nd IGBT pipes gate terminal it is equal
Be connected with the outfan of drive circuit, the pwm signal of drive circuit output drive IGBT pipes, the 2nd IGBT pipes, the
The conducting state of three IGBT pipes and the 4th IGBT pipes, to export required voltage.
The power end of the unit control circuit is connected with the cathode terminal of diode five and the anode tap of diode six；Unit is controlled
The signal input part of circuit is using two optical fiber connections；The power end of the drive circuit is connected with unit control circuit.
The adjacent power intermodule carrier wave differs successively 180/N degree, and N is power model quantity.
The outfan of the power conversion circuit one is sequentially connected the first current transformer and reactor, the power conversion electricity
The outfan connection capacitor and the 3rd switch on road.
Compared with prior art the present invention has following clear advantage：
1. three-phase alternating-current supply directly obtained from public electric wire net power supply power source bus, and Jing this device carries out power conversion
Afterwards, direct single-phase output, thus supply unit is to load supplying, load, its harmonic wave, idle, negative phase-sequence completely isolated with electrical network
Electric current is provided by power supply, is no longer flow into electrical network.This supply unit is made up of the cascade of multiple H bridges, and each H bridge is by input tranformer
A three-phase vice-side winding power, each vice-side winding has different phase angles, can so form actual poly phase rectification,
If using 36 pulse uncontrollable rectifiers, the current harmonics of grid side input current will be less than 3% and three-phase balance, power
Factor is close to 1.Due to not being re-introduced into the resonant branch such as LC, also will not again there is resonance phenomena, naturally also be not in harmonic wave
Amplify phenomenon.
2. work to ensure the high reliability of power supply, designed using unit redundancy, it is assumed that during normal work, N number of unit string
Connection can export required voltage just, and the unit number of the actual series connection of power supply is N+M, when wherein Individual cells failure, electricity
Trouble unit can be bypassed and not affect other cell operations by source automatically, when trouble unit number is less than or equal to M, power supply
Output voltage is rated output voltage.When voltage ripple of power network, power supply can adjust automatically modulation degree realize voltage stabilizing.
3. electric locomotive is in different interval operation, existing power supply by electrical network the opposite locomotive power supplies of difference, therefore in phase
Locomotive has the process powered again that has a power failure in a wink between neighboring interval, i.e. locomotive crosses split-phase.The moment of power supply is accessed again in locomotive,
Power supply is likely to be in the working condition of the leakage reactance short circuit by mobile transformer, at this moment occurs the overcurrent for having moment big.
This power supply i.e. adaptability with this loading condition, when working properly, power supply output is in voltage source characteristic, short when moment
When road occurs, power supply switchs to current source mode of operation, after instantaneous large-current disappears, voltage fed is recovered again.
Description of the drawings
Fig. 1 is the use state figure of the present invention；Fig. 2 is the structural representation of power model of the present invention.
Description of reference numerals：1- power source bus, 2- starters, 3- multiwinding transformers, 4- power conversion circuits, 5-
First current transformer, 6- reactors, 7- capacitors, 8- master controllers, 9- unit control circuits, 10- drive circuits.
Specific embodiment
With reference to concrete drawings and Examples, the invention will be further described.
As shown in Figure 1：The present invention accesses the power source bus 1 of power system points of common connection, electricity including tractive power supply system
Source bus 1 is connected by first switch S1 with the former limit input of multiwinding transformer 3, and Multiple coil connection transformer 3 is by power supply
Secondary after the supply voltage decompression transformation of bus 1 in Multiple coil connection transformer 3 exports N group three-phase windings, every group of three-phase windings
It is connected with power conversion circuit 4, required traction locomotive supply voltage is obtained by power conversion circuit 4；Work as required electric power
When locomotive power supply voltage is 27.5kV, N=44；Power conversion circuit 4 is connected by the 3rd switch S3 with load, to provide load
Required 27.5kV working powers.
First switch S1 is used to control the former limit input of multiwinding transformer 3 and the connection of power source bus 1.Multiple coil
The supply voltage of power source bus 1 is carried out blood pressure lowering by transformator 3, so that the regulation that power conversion circuit 4 carries out electric energy is processed.Power becomes
Change circuit 4 and low pressure is entered into the voltage that boosting after line translation obtains 27.5kV, being used with the work for providing 27.5kV traction locomotives will
Ask.
Power source bus 1 is connected with one end of second switch S2；The one of the other end connection starter 2 of second switch S2
End；The other end of starter 2 is connected with the primary side end of multiwinding transformer 3.In the embodiment of the present invention, starter 2 can be with
Using resistance is started, operationally, second switch S2 is closed first, impact when electric current reduces grid-connected by starter 2, when
After first switch S1 closure, second switch S2 disconnects, by first switch S1 for closing that starter 2 is short-circuit, does not interfere with whole
The job requirement of individual circuit.
Power conversion circuit 4 is sequentially connected in series after the first current transformer 5, reactor 6 and capacitor 7 and the 3rd switch S3
One end connection, the 3rd switch S3 the other end can with load be connected.First current transformer 5 can measure electric current, and to whole
Individual loop is protected, and reactor 6 has cushioning effect, and constitutes sine wave filter with capacitor 8.
The secondary outfan of multiwinding transformer 4 obtains N group three-phase windings；Power conversion circuit 4 includes N number of using output
The power model of end series connection chain structure；Transformator N groups three-phase windings are corresponded with the input of N number of power model and connected
Connect, each power model carries out rectification, inversion to the voltage being input into, and after N number of power model inversion concatenation required target is obtained
Running voltage（27.5kV）.
In N number of power model, adjacent power intermodule phase-shifting carrier wave differs successively 180/N degree.Multiwinding transformer 4 is by electricity
The supply voltage of source bus 1 is reduced to the line voltage of every group of winding in 630V, i.e. transformator N groups three-phase vice-side winding and is 630V；
Because transformer secondary N group three-phase windings voltages are all connected with correspondence power model, N number of power model carries out whole to 630V voltages
After stream, inversion are concatenated again, the single-phase voltage of 27.5kV is exported.
As shown in Figure 2：Power model includes rectification circuit, energy release circuit and the inversion electricity being connected with rectification circuit
Road.Rectification circuit includes the D1 of diode one, the D2 of diode two, the D3 of diode three, the D4 of diode four, the D5 of diode five and two poles
The D6 of pipe six；The cathode terminal of the D1 of diode one is connected with the cathode terminal of the D3 of diode three and the cathode terminal of the D5 of diode five, diode
The anode tap of one D1 is connected with the cathode terminal of the D2 of diode two, the anode tap of the D2 of diode two and the anode tap of the D4 of diode four and
The anode tap connection of the D6 of diode six, the cathode terminal of the D4 of diode four is connected with the anode tap of the D3 of diode three, the D6 of diode six
Cathode terminal be connected with the anode tap of the D5 of diode five, the anode tap of the D6 of diode six is by the first electric capacity C1 and D5 of diode five
Cathode terminal connection；
Energy release circuit includes the 7th fast recovery diode D7, energy expenditure resistance R1 and the 5th IGBT pipe V5；Energy
One end of dead resistance R1 is connected the cathode terminal connection of the D5 of diode five, the other end of energy expenditure resistance R1 with the first electric capacity C1
It is connected with the collector terminal of the 5th IGBT pipe V5, the emitter terminal of the 5th IGBT pipe V5 and anode tap, two poles of the D2 of diode two
The anode tap of the D4 of pipe four and the anode tap connection of the D6 of diode six；7th fast recovery diode D7 is attempted by energy expenditure electricity
The two ends of resistance R1, the anode tap of the 7th fast recovery diode D7 is connected with the collector terminal of the 5th IGBT pipe V5, and the 7th is quick
The cathode terminal of recovery diode D7 is connected the cathode terminal connection of the D5 of diode five with the first electric capacity C1；The gate pole of the 5th IGBT pipe V5
End is connected with the outfan of drive circuit 13, and the pwm signal of the output of drive circuit 13 drives the conducting state of the 5th IGBT pipe V5,
To discharge the energy having on dc bus.
Inverter circuit includes an IGBT pipe V1, the 2nd IGBT pipe V2, the 3rd IGBT pipes V3 and the 4th IGBT pipe V4；The
The emitter terminal of one IGBT pipe V1 is connected with the collector terminal of the 2nd IGBT pipe V2, the collector terminal and the 3rd of an IGBT pipe V1
The collector terminal connection of IGBT pipe V3, and collector terminal, the collector terminal of the 3rd IGBT pipe V3 of an IGBT pipe V1 is with two
The cathode terminal connection of the D5 of pole pipe five；The emitter terminal of the 2nd IGBT pipe V2 is connected with the emitter terminal of the 4th IGBT pipe V4, and the
The sun of the emitter terminal of two IGBT pipe V2 and the anode tap, the anode tap of the D4 of diode four and the D6 of diode six of the D2 of diode two
Extreme connection, the collector terminal of the 4th IGBT pipe V4 is connected with the emitter terminal of the 3rd IGBT pipe V3；The door of the first IGBT pipe V1
Extremely, the gate terminal of the gate terminal, the gate terminal of the 3rd IGBT pipe V4 and the 4th IGBT pipe V4 of the 2nd IGBT pipe V2 with drive
The outfan connection on galvanic electricity road 13, the pwm signal of the output of drive circuit 13 drive an IGBT pipe V1, the 2nd IGBT pipe V2, the
The conducting state of three IGBT pipes V3 and the 4th IGBT pipe V4, to export required voltage.
The power end of unit control circuit 9 is connected with the D5 cathode terminals of diode five and the D6 anode taps of diode six；Unit control
The signal input part of circuit processed 9 connects master controller 8 using two optical fiber；The power end and unit control circuit of drive circuit 10
9 connections.The emitter terminal of the first IGBT pipe V1 be connected with the collector terminal of the 2nd IGBT pipe V2 after as the first outfan,
The emitter terminal of three IGBT pipe V3 be connected with the collector terminal of the 4th IGBT pipe V4 after as the second outfan, the first outfan,
Voltage between the second outfan is used as the output end voltage value between power model.The voltage of N number of power model concatenation is used as whole
The output voltage of power conversion circuit 4.
In the embodiment of the present invention, the pwm signal produced from master controller 8 sends into unit control circuit 9, by unit control electricity
Road 9 generates the pwm signal of complementation, and the complementary PWM signals that unit control circuit 9 is generated send into drive circuit 10, complementary
Pwm signal driving force is limited, is not enough to directly drive IGBT work.When pwm signal is high level, the basis of drive circuit 10
The rising edge of PWM, carries out setting time delay（Dead Time）, then output is with Dead Time, the drive signal that voltage is+15V
To drive IGBT conductings.When pwm signal is low level, the output voltage of drive circuit 10 is the drive signal of -10V to drive
IGBT is turned off.Because drive signal carries Dead Time, and ensuring that two IGBT of same bridge arm will not simultaneously turn on, and prevents
The generation of short circuit is stopped.
The first of power model is mutually input into connection end by first fuse F1 and the anode tap and two of the D1 of diode one
The D2 of pole pipe two cathode terminal connection, power model second mutually be input into connection end directly with the anode tap and two of the D3 of diode three
The cathode terminal connection of the D4 of pole pipe four, third phase input connection end by the anode tap of second fuse F2 and the D5 of diode five and
The cathode terminal connection of the D6 of diode six, first is mutually input into connection end is mutually input between connection end, second is mutually input into connection end with second
It is input between connection end with third phase and the first voltage being mutually input between connection end and third phase input connection end is 630V.
During work, first close second switch S2, second switch S2 is closed into after setting time, closure first switch S1 and
3rd switch S3, multiwinding transformer 3 reduces grid-connected dash current by starter 2, by the first current transformer 55
Carry out detection protection.The conversion of the supply voltage of power source bus 1 is obtained required three-phase low-voltage by multiwinding transformer 3, is then passed through
Power conversion circuit 4 removes harmonic wave, and ensures the stability of voltage.
The present invention is converted to three-phase high-voltage by multiwinding transformer 3 from power taking on power system connection power source bus 1
Three-phase low-voltage, and by conversion process such as the rectification of power conversion circuit 4, inversions, three-phase voltage is transformed into into single-phase voltage, guaranteeing
While to load supplying stability, three-phase that traditional tractive power supply system single phase poaer supply brought to power system is solved not
Equilibrium problem；By power conversion solve harmonic wave that electric locomotive even load brought and it is idle the problems such as, it is practical, greatly
The quality of power supply is improved greatly.
Claims (9)
1. traction power supply supply unit, including power source bus, activate switch, multiwinding transformer, power conversion circuit, its feature
It is：The power source bus connects the former limit of the multiwinding transformer by activate switch, and the power conversion circuit includes many
The power model of individual outfan series connection, the vice-side winding quantity of the multiwinding transformer is equal to the quantity of the power model,
The winding of the secondary of the multiwinding transformer connects one to one with the input of the power model, first power model
Outfan and last power model outfan be the power conversion circuit outfan.
2. traction power supply supply unit according to claim 1, is characterized in that：The activate switch include first switch,
Second switch, starter, the second switch is in parallel with the first switch after connecting with the starter.
3. traction power supply supply unit according to claim 1, is characterized in that：The power model include rectification circuit,
Energy release circuit, inverter circuit, unit control circuit and drive circuit, the rectification circuit input end is defeated for power model
Enter end, the rectification circuit connects the energy release circuit, and the energy release circuit connects the inverter circuit, the list
First control circuit feeder ear connects the rectification circuit, and the control signal of the unit control circuit is passed by the drive circuit
It is delivered to the inverter circuit.
4. traction power supply supply unit according to claim 1, is characterized in that：The rectification circuit include diode one,
Diode two, diode three, diode four, diode five and diode six；The cathode terminal of diode one and diode three
The cathode terminal connection of cathode terminal and diode five, the anode tap of diode one is connected with the cathode terminal of diode two, diode two
Anode tap be connected with the anode tap of diode four and the anode tap of diode six, the cathode terminal of diode four and diode three
Anode tap connects, and the cathode terminal of diode six is connected with the anode tap of diode five, and the anode tap of diode six is electric by first
Appearance is connected with the cathode terminal of diode five.
5. traction power supply supply unit according to claim 1, is characterized in that：The energy release circuit includes that the 7th is fast
Quick-recovery diode, energy expenditure resistance and the 5th IGBT pipe；One end of energy expenditure resistance and the pole of the first capacitance connection two
The cathode terminal connection of pipe five, the other end of energy expenditure resistance is connected with the collector terminal of the 5th IGBT pipes, the 5th IGBT pipes
Emitter terminal is connected with the anode tap of the anode tap, the anode tap of diode four and diode six of diode two；7th is quick
Recovery diode is attempted by the two ends of energy expenditure resistance, the anode tap of the 7th fast recovery diode and the collection of the 5th IGBT pipes
Electrode tip connects, and the cathode terminal of the 7th fast recovery diode is connected with the cathode terminal of the first capacitance connection diode five；5th
The gate terminal of IGBT pipes is connected with the outfan of drive circuit, and the pwm signal of the drive circuit output drives the 5th IGBT pipes
Conducting state.
6. traction power supply supply unit according to claim 1, is characterized in that：The inverter circuit includes an IGBT
Pipe, the 2nd IGBT pipes, the 3rd IGBT pipes and the 4th IGBT pipes；The emitter terminal of the first IGBT pipes and the current collection of the 2nd IGBT pipes
Extreme connection, the collector terminal of an IGBT pipes is connected with the collector terminal of the 3rd IGBT pipes, and the colelctor electrode of an IGBT pipes
End, the collector terminal of the 3rd IGBT pipes are connected with the cathode terminal of diode five；The emitter terminal and the 4th of the 2nd IGBT pipes
The emitter terminal of IGBT pipes connects, and the emitter terminal of the 2nd IGBT pipes is connected with the emitter terminal of the 5th IGBT pipes, and the 4th
The collector terminal of IGBT pipes is connected with the emitter terminal of the 3rd IGBT pipes；The gate terminal of the first IGBT pipes, the door of the 2nd IGBT pipes
Extremely, the gate terminal of the gate terminal of the 3rd IGBT pipes and the 4th IGBT pipes is connected with the outfan of drive circuit, the drive
The pwm signal of dynamic circuit output drives the conducting shape of IGBT pipes, the 2nd IGBT pipes, the 3rd IGBT pipes and the 4th IGBT pipes
State.
7. traction power supply supply unit according to claim 1, is characterized in that：The power end of the unit control circuit with
The cathode terminal of diode five and the anode tap of diode six connect；The signal input part of unit control circuit is using two optical fiber connection masters
Control circuit；The power end of the drive circuit is connected with unit control circuit.
8. traction power supply supply unit according to claim 1, is characterized in that：Carrier wave is successively between the adjacent power model
Difference 180/N degree, N is power model quantity.
9. traction power supply supply unit according to claim 1, is characterized in that：The outfan of the power conversion circuit one according to
The first current transformer of secondary connection and reactor, the outfan connection capacitor and the 3rd switch of the power conversion circuit.
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| CN201611147469.3A CN106602561A (en) | 2016-12-13 | 2016-12-13 | Traction power supply system power source device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611147469.3A CN106602561A (en) | 2016-12-13 | 2016-12-13 | Traction power supply system power source device |
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| CN106602561A true CN106602561A (en) | 2017-04-26 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611147469.3A Pending CN106602561A (en) | 2016-12-13 | 2016-12-13 | Traction power supply system power source device |
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| CN107612042A (en) * | 2017-08-17 | 2018-01-19 | 南京理工大学 | Synchronous capacitor based on the big impedance of pre-access starts parallel network circuit and control method |
| CN114050728A (en) * | 2021-12-03 | 2022-02-15 | 日新电机（无锡）有限公司 | Power supply device for converting single phase into three phase |
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Application publication date: 20170426 |