CN109245572A - 12 Pulses Rectifier of tandem type based on electric power electric transformer - Google Patents
12 Pulses Rectifier of tandem type based on electric power electric transformer Download PDFInfo
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- CN109245572A CN109245572A CN201811242700.6A CN201811242700A CN109245572A CN 109245572 A CN109245572 A CN 109245572A CN 201811242700 A CN201811242700 A CN 201811242700A CN 109245572 A CN109245572 A CN 109245572A
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- phase
- transformer
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
- H02M1/007—Plural converter units in cascade
Abstract
The present invention provides 12 Pulses Rectifiers of tandem type based on electric power electric transformer, belong to power electronics part technical field.The present invention includes input inductance, converters, medium-high frequency phase-shifting transformer, two groups of three-phase bridge rectification circuits, output capacitances, and converters and medium-high frequency phase-shifting transformer collectively constitute electric power electric transformer.Converters are controlled the on-off of 8 IGBT or 8 MOSFET by control circuit, raising frequency is carried out to the alternating current of 50HZ, medium-high frequency phase-shifting transformer is mainly used for phase shift, and two groups of three-phase bridge rectification circuits are connected in series, output voltage doubles, and DC side is filtered using bulky capacitor.Tandem type 12 Pulses Rectifier of the present invention based on electric power electric transformer, reduces the volume of phase-shifting transformer, alleviates its weight, and the control method of converters is simple, effect stability.The present invention is adapted to medium-high frequency power rectifier occasion.
Description
Technical field
The present invention relates to 12 Pulses Rectifiers of tandem type based on electric power electric transformer, belong to power electronic technique neck
Domain.
Background technique
Multi-pulse rectification technology is a kind of effective ways that high power rectification system inhibits input harmonics, harmonics restraint effect
Fruit is good, high reliablity and Electro Magnetic Compatibility is good.Converters also more and more be applied to electric ship, fly it is mechanical, electrical
In the application of Force system etc., in order to transmit high power under suitable voltage level.
Phase-shifting transformer is the required device of multiple pulse rectification circuit, and main function is that several groups of presence are provided for rectifier bridge
The three-phase voltage of phase difference.But the phase-shifting transformer huge volumetric constraint application of multi phase rectifier, existing drop
The method of the volume of low phase-shifting transformer mainly uses autocoupling type phase-shifting transformer, but winding construction is complicated, former vice-side winding
It is not electrically isolated, reduces the safety of fairing.In unit time, the magnetic flux change of medium-high frequency phase-shifting transformer iron core
The more common phase-shifting transformer of rate will increase at multiple, can reduce the volume and quality of iron core.If phase-shifting transformer primary side around
Converters are added in group side, carry out raising frequency to original 50HZ working frequency, so that it may it is original to change phase-shifting transformer
Working condition.Converters are combined with traditional phase-shifting transformer, have both retained the shifting of original phase-shifting transformer
Phase function, but can get both medium-high frequency phase-shifting transformer small in volume the characteristics of.12 Pulses Rectifier of tandem type becomes in phase shift
Depressor is followed by the three-phase rectification bridge of two groups of series connections, doubles output voltage, is commonly applied to need the power rectifier of high pressure
Occasion.
Summary of the invention
The purpose of the present invention is to solve the above-mentioned problems of the prior art, and then provide a kind of based on power electronics
12 Pulses Rectifier of tandem type of transformer.
The purpose of the present invention is what is be achieved through the following technical solutions:
12 Pulses Rectifier of tandem type based on electric power electric transformer, the tandem type based on electric power electric transformer
12 Pulses Rectifiers are whole including input inductance, three groups of converters, medium-high frequency phase-shifting transformer, first group of three phase full bridge
Current circuit, second group of three-phase bridge rectification circuit, output capacitance, control circuit and load；In exchange side, inductance and three-phase are inputted
Alternating-current voltage source usa、usb、uscIt is connected in series；The right side phase of three groups every group of converters of input terminal and input inductance
Even, the turn-on and turn-off of three groups every group of converters of 8 IGBT are controlled by the control signal of control circuit；Medium-high frequency
The input terminal of phase-shifting transformer is connected with the right side of three groups of converters, three primary sides of medium-high frequency phase-shifting transformer around
Group is mutually indepedent, and electrical communication is not present, and star-like connection and angle-style is respectively adopted in two vice-side windings of medium-high frequency phase-shifting transformer
It is coupled, two vice-side windings of medium-high frequency phase-shifting transformer export two groups 30 ° of phase phase difference of three-phase voltage；First group of three-phase is complete
The input terminal of bridge rectification circuit and the output end a of medium-high frequency phase-shifting transformer1、b1、c1It is connected, second group of three phase full bridge rectified current
The input terminal on road and the output end a of medium-high frequency phase-shifting transformer2、b2、c2It is connected；First group of three-phase bridge rectification circuit and second
Group three-phase bridge rectification circuit is connected in series；First group of three-phase bridge rectification circuit and second group of three-phase bridge rectification circuit with it is defeated
Capacitor and load parallel connection out.
The present invention is based on 12 Pulses Rectifier of tandem type of electric power electric transformer, three sizes are identical defeated
Enter inductance LsRespectively with three-phase alternating current potential source usa、usb、uscIt is connected in series, rectifier is equivalent to current source type converter.
The present invention is based on 12 Pulses Rectifier of tandem type of electric power electric transformer, three groups of Technics of Power Electronic Conversion
Device and medium-high frequency phase-shifting transformer collectively constitute electric power electric transformer, under intermediate frequency state, three groups of converters
Every group is made of 8 IGBT, and altogether there are four bridge arm, each bridge arm is become using 2 IGBT differential concatenation connections, three groups of power electronics
Parallel operation is mutually indepedent；Under high frequency state, MOSFET can be used to replace IGBT for the composition device of three groups of converters.
The present invention is based on 12 Pulses Rectifier of tandem type of electric power electric transformer, the control circuit belongs to open loop
Control is S to three groups of every deck labels of convertersw1、Sw2、Sw7、Sw8IGBT its on-off is controlled using same signal,
It is S to three groups of every deck labels of convertersw3、Sw4、Sw5、Sw6IGBT its on-off is controlled using same signal.
The present invention is based on 12 Pulses Rectifier of tandem type of electric power electric transformer, the medium-high frequency phase-shifting transformer is used
Isolated transformer device structure, medium-high frequency phase-shifting transformer are made of three stems, there is a primary side winding and two on each stem
A vice-side winding；Primary side winding on three stems is mutually indepedent, electrical communication is not present, two vice-side windings are respectively adopted star-like
It is coupled and angle-style is coupled, the winding turns ratio that the winding of star-like connection is coupled with angle-style isThe two of two vice-side windings output
Group three-phase voltage amplitude is equal, and the winding of star-like connection is identical as primary side winding voltage-phase, the winding and primary side that angle-style is coupled
Winding phases differ 30 °.
The present invention is based on 12 Pulses Rectifier of tandem type of electric power electric transformer, first group of three phase full bridge rectified current
Road and second group of three-phase bridge rectification circuit are connected in series, and output voltage doubles；Output capacitance is filtered using bulky capacitor, load electricity
It is small to emboss wave, constant pressure load can be equivalent to.
The present invention is based on 12 Pulses Rectifiers of tandem type of electric power electric transformer, and every group of converters is by 8
A IGBT composition, there are four bridge arms altogether, and each bridge arm is using 2 IGBT differential concatenation connections, three groups of converters phases
It is mutually independent.The turn-on and turn-off that 8 IGBT of converters are controlled by control circuit, increase the work of phase-shifting transformer
Working frequency, and then reduce the volume of phase-shifting transformer and mitigate its quality, improve power density.
Detailed description of the invention
Fig. 1 is electrical block diagram of the invention.
Fig. 2 is isolating transformer winding construction figure of the present invention.
Fig. 3 is the converters schematic diagram under high frequency state.
Appended drawing reference: 1 is input inductance；2 be three groups of converters；3 be medium-high frequency phase-shifting transformer；4 be
One group of three-phase bridge rectification circuit；5 be second group of three-phase bridge rectification circuit；6 be output capacitance；7 be control circuit；8 are negative
It carries；3-1 is stem one；3-2 is stem two；3-3 is stem three.
U in Fig. 1sa、usb、uscFor three-phase alternating-current supply, ia、ib、icFor three-phase input current, i1、i2、i3For transformation is isolated
Device inputs winding current, ia1、ib1、ic1Electric current namely first group are exported for medium-high frequency phase-shifting transformer star connection vice-side winding
The input current of three-phase bridge rectification circuit, ia2、ib2、ic2For the angular connection vice-side winding output electricity of medium-high frequency phase-shifting transformer
The input current of stream namely second group of three-phase bridge rectification circuit, iRec1It is the output electricity of first group of three-phase bridge rectification circuit
Stream, iRec2It is the output electric current of second group of three-phase bridge rectification circuit, idFor load current.A, b, c are medium-high frequency phase shift in Fig. 2
Transformer primary winding, a1, b1, c1, a2, b2, c2 are medium-high frequency phase-shifting transformer vice-side winding.Figure three is in high frequency state
Converters structure chart is made of 8 MOSFET, reversed for two MOSFET on each bridge arm altogether there are four bridge arm
Series connection.
Specific embodiment
Below in conjunction with attached drawing, the present invention is described in further detail: the present embodiment is being with technical solution of the present invention
Under the premise of implemented, give detailed embodiment, but protection scope of the present invention is not limited to following embodiments.
Embodiment one: as shown in Figure 1-3,12 pulse wave of tandem type based on electric power electric transformer involved in the present embodiment
Rectifier, including input inductance, three groups of converters, medium-high frequency phase-shifting transformer, first group of three phase full bridge rectified current
Road, second group of three-phase bridge rectification circuit, output capacitance, control circuit and load；In exchange side, inductance and three-phase alternating current are inputted
Voltage source usa、usb、uscIt is connected in series；Three groups every group of converters of input terminal is connected with the right side of input inductance, and three
The turn-on and turn-off of 8 IGBT of every group of converters of group are controlled by the control signal of control circuit；Medium-high frequency phase shift
The input terminal of transformer is connected with the right side of three groups of converters, three primary side winding phases of medium-high frequency phase-shifting transformer
It is mutually independent, electrical communication is not present, star-like connection is respectively adopted in two vice-side windings of medium-high frequency phase-shifting transformer and angle-style is coupled,
Two vice-side windings of medium-high frequency phase-shifting transformer export two groups 30 ° of phase phase difference of three-phase voltage；First group of three phase full bridge is whole
The input terminal of current circuit and the output end a of medium-high frequency phase-shifting transformer1、b1、c1It is connected, second group of three-phase bridge rectification circuit
The output end a of input terminal and medium-high frequency phase-shifting transformer2、b2、c2It is connected；First group of three-phase bridge rectification circuit and second group three
Phase full bridge rectifier is connected in series；First group of three-phase bridge rectification circuit and second group of three-phase bridge rectification circuit and output electricity
Appearance and load parallel connection.
Embodiment two: as shown in Figure 1,12 pulse wave of tandem type based on electric power electric transformer involved in the present embodiment is whole
Flow device, the identical input inductance L of three sizessRespectively with three-phase alternating current potential source usa、usb、uscIt is connected in series, it is whole
Stream device is equivalent to current source type converter.
Embodiment three: as shown in Figure 1,12 pulse wave of tandem type based on electric power electric transformer involved in the present embodiment is whole
Device is flowed, three groups of converters and medium-high frequency phase-shifting transformer collectively constitute electric power electric transformer, in
Under frequency state, every group of three groups of converters is made of 8 IGBT, and altogether there are four bridge arm, each bridge arm uses 2
The connection of IGBT differential concatenation, three groups of converters are mutually indepedent；Under high frequency state, three groups of converters
Forming device MOSFET can be used to replace IGBT.
Converters and medium-high frequency phase-shifting transformer collectively constitute electric power electric transformer.The power electronics becomes
Parallel operation, under intermediate frequency state, every group of three groups of converters is made of 8 IGBT, and there are four bridge arm, each bridge arms altogether
It is connected using 2 IGBT differential concatenations, three groups of converters are mutually indepedent, improve safety；Control circuit belongs to out
Ring control is S to three groups of every deck labels of convertersw1、Sw2、Sw7、Sw8IGBT its conducting is controlled using same signal
And shutdown, it is S to three groups of every deck labels of convertersw3、Sw4、Sw5、Sw6IGBT its conducting is controlled using same signal
And shutdown, two groups of control signals are complementary, and control method is simple, and control effect is stablized.
Example IV: as shown in figs. 1 and 3,12 arteries and veins of tandem type based on electric power electric transformer involved in the present embodiment
Wave rectifier, the control circuit belong to opened loop control, are S to three groups of every deck labels of convertersw1、Sw2、Sw7、Sw8
IGBT its on-off is controlled using same signal, be S to three groups of every deck labels of convertersw3、Sw4、Sw5、Sw6IGBT
Its on-off is controlled using same signal.
Power electronics converters, if it is desired to high frequency state, three groups of converters in Fig. 1 can use figure
Structure shown in 3 replaces.Every group of three groups of converters is made of 8 MOSFET, and altogether there are four bridge arm, each bridge arm is adopted
It is connected with 2 MOSFET differential concatenations, three groups of converters are mutually indepedent, improve safety；Control circuit belongs to out
Ring control is Q to three groups of every deck labels of converters1、Q2、Q7、Q8MOSFET its conducting is controlled using same signal
And shutdown, it is Q to three groups of every deck labels of converters3、Q4、Q5、Q6MOSFET its conducting is controlled using same signal
And shutdown, switching frequency is improved, the scope of application of the rectifier has been expanded.
Embodiment five: as illustrated in fig. 1 and 2,12 arteries and veins of tandem type based on electric power electric transformer involved in the present embodiment
Wave rectifier, the medium-high frequency phase-shifting transformer use isolated transformer device structure, and medium-high frequency phase-shifting transformer is by three stems
It forms, has a primary side winding and two vice-side windings on each stem；Primary side winding on three stems is mutually indepedent, does not deposit
In electrical communication, two vice-side windings be respectively adopted it is star-like connection and angle-style be coupled, the winding of star-like connection be coupled with angle-style around
Organizing the turn ratio isTwo groups of three-phase voltage amplitudes of two vice-side windings output are equal, the winding and primary side winding of star-like connection
Voltage-phase is identical, angle-style be coupled winding with 30 ° of primary side winding phase phase difference.
Converters and medium-high frequency phase-shifting transformer collectively constitute electric power electric transformer.The medium-high frequency phase shift
Transformer transformer by stem one, stem two, stem three and primary side winding a, primary side winding b, primary side winding c, vice-side winding a1,
Vice-side winding b1, vice-side winding c1, vice-side winding a2, vice-side winding b2, vice-side winding c2 composition and symmetrical configuration, each stem
It is upper that there are three winding, a primary side winding and two vice-side windings.The primary side winding of medium-high frequency phase-shifting transformer is mutually indepedent, no
There are electrical communication, star connection and triangle junction, the three-phase of two groups 30 ° of phase phase difference of output is respectively adopted in two vice-side windings
Voltage.Using isolated structure, safety with higher.
Embodiment six: as shown in Figure 1,12 pulse wave of tandem type based on electric power electric transformer involved in the present embodiment is whole
Device is flowed, first group of three-phase bridge rectification circuit and second group of three-phase bridge rectification circuit are connected in series, and output voltage doubles；
Output capacitance is filtered using bulky capacitor, and load voltage ripple is small, can be equivalent to constant pressure load.
Converters and medium-high frequency phase-shifting transformer collectively constitute electric power electric transformer.The power electronics becomes
The first group of three-phase bridge rectification circuit and second group of three-phase bridge rectification circuit of depressor outlet side connection are all made of diode work
For rectifying device, thus structure is simple, realizes that difficulty is low, system robustness is strong；Two groups of three-phase bridge rectification circuits are connected in series,
The problem of not only solving current imbalance, and output voltage doubles, suitable for exporting the power rectifier occasion of high pressure.
The foregoing is only a preferred embodiment of the present invention, these specific embodiments are all based on the present invention
Different implementations under general idea, and scope of protection of the present invention is not limited thereto, it is any to be familiar with the art
Technical staff in the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of, should all cover of the invention
Within protection scope.Therefore, the scope of protection of the invention shall be subject to the scope of protection specified in the patent claim.
Claims (6)
1. 12 Pulses Rectifier of tandem type based on electric power electric transformer, which is characterized in that described to be based on power electronics transformation
12 Pulses Rectifier of tandem type of device includes input inductance (1), three groups of converters (2), medium-high frequency phase-shifting transformers
(3), first group of three-phase bridge rectification circuit (4), second group of three-phase bridge rectification circuit (5), output capacitance (6), control circuit
(7) and (8) are loaded；In exchange side, input inductance (1) and three-phase alternating current potential source usa、usb、uscIt is connected in series；Three groups of electric power electricity
The input terminal of sub- every group of converter (2) is connected with the right side of input inductance (1), and 8 of three groups of every group of converters (2)
The turn-on and turn-off of IGBT are controlled by the control signal of control circuit (7)；The input terminal of medium-high frequency phase-shifting transformer (3) and three groups
The right side of converters (2) is connected, and three primary side windings of medium-high frequency phase-shifting transformer (3) are mutually indepedent, are not present
Electrical communication, star-like connection is respectively adopted for two vice-side windings of medium-high frequency phase-shifting transformer (3) and angle-style is coupled, medium-high frequency phase shift
Two vice-side windings of transformer (3) export two groups 30 ° of phase phase difference of three-phase voltage；First group of three-phase bridge rectification circuit
(4) the output end a of input terminal and medium-high frequency phase-shifting transformer (3)1、b1、c1It is connected, second group of three-phase bridge rectification circuit (5)
Input terminal and medium-high frequency phase-shifting transformer (3) output end a2、b2、c2It is connected；First group of three-phase bridge rectification circuit (4) and
Second group of three-phase bridge rectification circuit (5) is connected in series；First group of three-phase bridge rectification circuit (4) and second group of three phase full bridge are whole
Current circuit (5) is connected in parallel with output capacitance (6) and load (8).
2. tandem type 12 Pulses Rectifier according to claim 1 based on electric power electric transformer, which is characterized in that institute
State identical input inductance (1) L of three sizessRespectively with three-phase alternating current potential source usa、usb、uscIt is connected in series, rectifier is equivalent
For current source type converter.
3. tandem type 12 Pulses Rectifier according to claim 1 based on electric power electric transformer, which is characterized in that institute
It states three groups of converters (2) and medium-high frequency phase-shifting transformer (3) collectively constitutes electric power electric transformer, in intermediate frequency state
Under, every group of three groups of converters (2) is made of 8 IGBT, and altogether there are four bridge arm, each bridge arm uses 2 IGBT
Differential concatenation connection, three groups of converters (2) are mutually indepedent；Under high frequency state, three groups of converters (2)
Composition device can be used MOSFET replace IGBT.
4. tandem type 12 Pulses Rectifier according to claim 1 based on electric power electric transformer, which is characterized in that institute
It states control circuit (7) and belongs to opened loop control, be S to three groups of every deck labels of converters (2)w1、Sw2、Sw7、Sw8IGBT
Its on-off is controlled using same signal, is S to three groups of every deck labels of converters (2)w3、Sw4、Sw5、Sw6IGBT adopt
Its on-off is controlled with same signal.
5. tandem type 12 Pulses Rectifier according to claim 1 based on electric power electric transformer, which is characterized in that institute
It states medium-high frequency phase-shifting transformer (3) and uses isolated transformer device structure, medium-high frequency phase-shifting transformer (3) is made of three stems,
There are a primary side winding and two vice-side windings on each stem；Primary side winding on three stems is mutually indepedent, and there is no electricity
Connection, star-like connection is respectively adopted for two vice-side windings and angle-style is coupled, the winding turns that the winding of star-like connection is coupled with angle-style
Than forTwo groups of three-phase voltage amplitudes of two vice-side windings output are equal, the winding and primary side winding voltage of star-like connection
Phase is identical, angle-style be coupled winding with 30 ° of primary side winding phase phase difference.
6. tandem type 12 Pulses Rectifier according to claim 1 based on electric power electric transformer, which is characterized in that institute
It states first group of three-phase bridge rectification circuit (4) and second group of three-phase bridge rectification circuit (5) is connected in series, output voltage doubles；
Output capacitance (6) is filtered using bulky capacitor, and load (8) voltage ripple is small, can be equivalent to constant pressure load.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811242700.6A CN109245572A (en) | 2018-10-24 | 2018-10-24 | 12 Pulses Rectifier of tandem type based on electric power electric transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811242700.6A CN109245572A (en) | 2018-10-24 | 2018-10-24 | 12 Pulses Rectifier of tandem type based on electric power electric transformer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110635695A (en) * | 2019-09-19 | 2019-12-31 | 南京航空航天大学 | Novel 24-pulse TRU self-coupling energy feedback type half-bridge auxiliary circuit |
| CN111786582A (en) * | 2020-08-06 | 2020-10-16 | 哈尔滨工业大学（威海） | Series 12-pulse rectifier using low-complexity power electronic transformer |
| CN117578893A (en) * | 2024-01-16 | 2024-02-20 | 兰州交通大学 | Parallel type multi-pulse rectifier based on three-stage PET |
-
2018
- 2018-10-24 CN CN201811242700.6A patent/CN109245572A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110635695A (en) * | 2019-09-19 | 2019-12-31 | 南京航空航天大学 | Novel 24-pulse TRU self-coupling energy feedback type half-bridge auxiliary circuit |
| CN111786582A (en) * | 2020-08-06 | 2020-10-16 | 哈尔滨工业大学（威海） | Series 12-pulse rectifier using low-complexity power electronic transformer |
| CN111786582B (en) * | 2020-08-06 | 2022-09-16 | 哈尔滨工业大学（威海） | Series 12-pulse rectifier using low-complexity power electronic transformer |
| CN117578893A (en) * | 2024-01-16 | 2024-02-20 | 兰州交通大学 | Parallel type multi-pulse rectifier based on three-stage PET |
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Application publication date: 20190118 |