CN105515405A - Wide-range step-down 18-pulse self-coupling transformer rectifier - Google Patents
Wide-range step-down 18-pulse self-coupling transformer rectifier Download PDFInfo
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- CN105515405A CN105515405A CN201510736038.XA CN201510736038A CN105515405A CN 105515405 A CN105515405 A CN 105515405A CN 201510736038 A CN201510736038 A CN 201510736038A CN 105515405 A CN105515405 A CN 105515405A
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- 238000010168 coupling process Methods 0.000 title abstract description 20
- 238000005859 coupling reaction Methods 0.000 title abstract description 20
- 238000004804 winding Methods 0.000 claims abstract description 112
- 238000000034 method Methods 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 239000013598 vector Substances 0.000 abstract description 4
- 230000008878 coupling Effects 0.000 description 15
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000010363 phase shift Effects 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F30/00—Fixed transformers not covered by group H01F19/00
- H01F30/02—Auto-transformers
-
- 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
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
- H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
- H02M5/10—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers
-
- 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
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
Abstract
The invention discloses a wide-range step-down 18-pulse self-coupling transformer rectifier, and the transformer rectifier comprises a step-down 18-pulse self-coupling transformer, a main rectification bridge, and an auxiliary rectification bridge. Each phase of the step-down 18-pulse self-coupling transformer is provided with six windings, wherein the six windings comprise one extended winding, three short windings, and two secondary windings. Through the reasonable design of the turn ratio of the primary and secondary windings of each phase and the voltage vectors of the primary and secondary windings, the rectifier achieves the wide-range step-down of an input voltage, obtains three groups of three-phase AC voltages with the phase difference 37 degrees, and outputs the voltages through a rectification bridge circuit. The rectifier is small in current harmonics, is small in ripples of output voltages, solves a problem that the output voltage of a conventional 18-pulse self-coupling transformer rectifier is difficult to adjust, and can achieve the wide-range output of 28-280V DC voltages.
Description
Technical field
The invention belongs to field of conversion of electrical energy, specifically refer to a kind of wide region buck 18 pulse self coupling vertoro.
Background technology
It is simple that multiple-pulse commutation technique has structure, and high efficient and reliable, the advantages such as overload capacity is strong, are thus widely used at aviation field.Multiple-pulse commutation technique can be divided into 12 pulses according to output voltage umber of pulse, 18 pulses, 24 pulses, 30 pulses etc., current on line side is made to become corresponding pulses number, staircase waveform synchronous with output voltage, realizes power factor correction and harmonic restraining function, but and more corresponding the lower transformer device structure of umber of pulse ac-side current THD value be more complicated.Consider current on line side THD value and complexity in circuits selects 18 pulse transforming commutation techniques.
Isolated multiple-pulse vertoro can realize 28V direct current by appropriate design transformer winding structure and no-load voltage ratio and export.But greatly, Harmonics of Input content is high, is difficult to meet air standard for the change of output voltage regulation under frequency conversion input condition.Traditional isolating transformer compared by autotransformer can effectively reduce transformer equivalent capacity, reduces the volume and weight of transformer, and power transmission efficiency is higher simultaneously.But 18 traditional pulse self coupling vertoroes are exported by bridge conversion circuit rectification, output voltage higher and be difficult to regulate, the requirement of current aerospace field low-voltage DC supply system can not be met.Although output voltage step-down can be realized by rear class cascaded buck circuit regulate but circuit more complicated and efficiency reduce.
Summary of the invention
The object of the invention is to realize the step-down of self coupling vertoro output voltage to regulate, a kind of wide region buck 18 pulse self coupling vertoro is provided.
For achieving the above object, the scheme that the present invention adopts is:
A kind of wide region buck 18 pulse self coupling vertoro.The input voltage of described rectifier converter, through buck 18 pulse autotransformer reduction regulation, produces 3 groups of three-phase alternating voltages and connects rectifier circuit, output voltage range 28V-280V.
Every totally 6 windings mutually of described buck 18 pulse autotransformer (for A phase), 1 group, former limit extends winding, 3 short windings (extend winding Aa, short winding a1a ', a ' b ", b " a2), the short winding (c1c, cb2) of secondary 2.A phase voltage source connects the head end (A) that former limit extends winding (Aa), extends the centre tap a that winding ends (a) connects the short winding (a1a, ac2) of B phase secondary, coating-forming voltage exit (a).Be linked in sequence the short winding in 3, the former limit of A phase (a1a ', a ' b ", b " a2) formation 2 voltage leading-out ends a ', b ", head end (a1) and end (a2).Wherein head end (a1) and end (a2) connect the short winding (a1a of B phase secondary respectively, ac2) be linked in sequence the head end (a1) formed, the short winding (b1b, ba2) of C phase secondary be linked in sequence formed end (a2).The short winding (c1c, cb2) of A phase secondary is linked in sequence coating-forming voltage exit (c), head end (c1) and tail end (b2).Wherein head end (c1) and tail end (b2) connect respectively the short winding in the former limit of C phase (c1c ', c ' a "; a " c2) be linked in sequence formed the short winding of head end (c1) and the former limit of B phase (b1b ', b ' c ", c " b2) tail end (b2) that is connected to form of order.Common port is had but the electric current that flows through of each winding is different between each phase winding.B phase is similar to A phase to connected mode with the winding construction of C phase.
Described wide region buck 18 pulse autotransformer is by extending the reduction regulation of winding realization to input voltage.Autotransformer produces 3 groups of three-phase alternating voltages simultaneously, and often has 37 ° of phase shifts (i.e. principal voltage (V between group voltage
a, V
b, V
c) amplitude be net side input phase voltage (V
a, V
b, V
c) amplitude 1/b doubly, boost voltage (V
a ', V
b ', V
c ') and (V
a ", V
b ", V
c ") voltage magnitude be net side input phase voltage (V
a, V
b, V
c) amplitude 0.767/b doubly.The phase place of exit a, a ', a " phase place differ 37 ° respectively, exit b, b ', b " differs 37 °, exit c, c ', c respectively " phase place differ 37 ° respectively) for A phase, former limit extends the number of turn N of winding (Aa)
nrelation is met with step-down ratio:
if the short winding a1a ' in former limit, a ' b ", b " a2 turn ratio summation is 1, then former limit extends the ratio of winding (Aa) and the short winding in three, former limit (a1a ', a ' b ", b " a2) the summation number of turn and is
the ratio that the short winding in three, former limit (a1a ', a ' b ", b " a2) and former limit extend the number of turn of winding (Aa) is
the ratio that the short winding (c1c, cb2) of secondary 2 and former limit extend the number of turn of winding (Aa) is
the ratio of the number of turn of B, C phase winding is consistent with A.
Described three groups of rectifier circuit Parallel opertation, output voltage is any time three groups of input ac voltage line voltage max, output voltage range 28V-280V.In rectifier bridge, diode is according to the conducting of corresponding line voltage vector switch sequence, wherein main each cycle of bridge diode each conducting 80 °, each conducting of auxiliary bridge diode each cycle 20 °.
Beneficial effect: compared with the rectifier converter of existing 18 pulse autotransformers, wide region buck 18 pulse self coupling vertoro provided by the invention often increases by one group of reduction regulation extending winding and realize input voltage mutually on the basis of original 18 pulse autotransformers, solves original self coupling vertoro output voltage higher and be difficult to the problem that regulates.Wide region buck 18 pulse self coupling vertoro input current provided by the invention is 18 staircase waveforms, and harmonic content is little.Buck self coupling vertoro of the present invention realizes 28V-280V wide-range voltage and exports, and widens vertoro range of application.
Accompanying drawing explanation
Accompanying drawing 1 is buck 18 pulse self coupling vertoro circuit diagram;
Accompanying drawing 2 is autotransformer winding technique figure;
Accompanying drawing 3 is autotransformer winding construction figure;
Accompanying drawing 4 is autotransformer input current waveform figure;
Accompanying drawing 5 is system A phase input current and voltage simulation waveform;
Accompanying drawing 6 is system output voltage simulation waveform;
Primary symbols above in accompanying drawing illustrates: V
a, V
b, V
c---net side three-phase input voltage, i
a, i
b, i
c---three-phase input current, N
n---former limit extends winding (for A phase: the Aa) number of turn, N
p1, N
p2---the short winding in former limit (for A phase: a1a ' or b " a2, a ' b ") number of turn, N
s---the short winding of secondary (for A phase: c1c, the cb2) number of turn, V
a, V
a ', V
a "---outlet voltage, a, b, c, a ', b ', c ', a ", b " and, c "---voltage leading-out ends, U
o---output voltage, I
d---output current effective value
Embodiment
Below technical solution of the present invention is described in detail, but protection scope of the present invention is not limited to described embodiment.
Embodiment: be illustrated in figure 1 buck 18 pulse self coupling vertoro circuit diagram, step-down ratio b=2, output voltage U
o=140V.The every mutually former limit of buck 18 pulse autotransformer (for A phase) in described system has 1 group to extend winding respectively, 3 short windings (extend winding Aa, short winding a1a ', a ' b ", b " a2), secondary has 2 short windings (c1c, cb2), sees Fig. 2.The concrete connected mode of winding: the head end (A) that the former limit of A phase extends winding (Aa) is A phase voltage input, connect input voltage source, end (a) winding (a1a short in B phase secondary, ac2) the centre tap a formed that is linked in sequence connects, coating-forming voltage exit (a).Be linked in sequence the short winding in 3, former limit of A (a1a ', a ' b ", b " a2) formation 2 voltage leading-out ends a ', b "; be linked in sequence head end 3 short windings (a1a ', a ' b ", b " a2) head end (a1) formed; end (a2) connects B phase secondary 2 short windings (a1a; ac2) respectively and to be linked in sequence the head end (a1) formed; the short winding (b1b, ba2) of C phase secondary 2 is linked in sequence the end (a2) of end (a2) of formation.Short winding (the c1c of A phase secondary, cb2) be linked in sequence coating-forming voltage exit (c), short winding (the c1c of secondary, cb2) be linked in sequence formed head end (c1), tail end (b2) respectively with the short winding in the former limit of C phase (c1c ', c ' a "; a " c2) be linked in sequence formed the short winding of head end (c1) and the former limit of B phase (b1b ', b ' c ", c " b2) tail end (b2) that is connected to form of order is connected.B phase is similar to A phase with the connected mode of C phase.
Buck autotransformer extends the reduction regulation of winding realization to input voltage by often increasing by one group mutually, realizes 28V-280V wide-range voltage and exports.Between the prolongation winding that autotransformer often increases mutually with its short winding in every 3, mutually former limit, there is certain turn ratio relation.For A phase, if the short winding a1a ' in former limit, a ' b ", b " a2 turn ratio summation is 1, then former limit extends the ratio of winding (Aa) and the short winding in three, former limit (a1a ', a ' b ", b " a2) the summation number of turn is 0.716: 1.Former limit extends the number of turn N of winding (Aa)
nrelation is met with step-down ratio:
the short winding in the every mutually former limit of buck autotransformer, the short winding of secondary and former limit extend to be had the fixing turn ratio to export with the 3 groups of three-phase alternating voltages realizing self coupling vertoro and often organize between voltage between winding to produce 37 ° of phase shifts.The ratio that the short winding in three, former limit (a1a ', a ' b ", b " a2) and former limit extend the number of turn of winding (Aa) is 0.29875: 0.4025: 0.29875: 0.716.The ratio that the short winding (c1c, cb2) of secondary 2 and former limit extend the number of turn of winding (Aa) is 0.15896: 0.15896: 0.716.The ratio of the number of turn of B, C phase winding is consistent with A.According to above-mentioned connected mode and turn ratio relation, exit a ', b ', c ' advanced exit a, b, c37 °, exit a ", b " and, c " delayed advanced exit a, b, c37 °.Transformer outlet voltage (V
a, V
a ', V
a ") amplitude with net side input voltage (V
a) amplitude meets following relation: V
a=0.5V
a, V
a '=V
a "=0.3835V
a.
Buck 18 pulse autotransformer forms one group of main AC-input voltage (V
a, V
b, V
c), two groups of auxiliary AC-input voltage (V
a ', V
b ', V
c ') and (V
a ", V
b ", V
c "), be connected with auxiliary rectifier bridge with corresponding main rectifier bridge respectively.Buck P type 18 pulse autotransformer is asymmetric structure, and all vector voltages are through rectifier bridge Parallel opertation, and output voltage is any time line voltage max.In rectifier bridge, diode is according to the conducting of corresponding line voltage vector switch sequence, wherein main each cycle of bridge diode each conducting 80 °, each conducting of auxiliary bridge diode each cycle 20 °.Buck self coupling vertoro output voltage U
o=140V.
For verifying validity of the present invention, with buck 18 pulse self coupling vertoro circuit diagram in accompanying drawing 1, step-down ratio is 2 carry out l-G simulation test for example.Figure 2 shows that buck 18 pulse autotransformer winding technique figure, illustrate that the concrete connected mode of each phase winding and winding current flow to.Figure 3 shows that the winding construction figure of buck 18 arteries and veins autotransformer, main AC-input voltage (V
a, V
b, V
c) and two groups of auxiliary AC-input voltage (V
a ', V
b ', V
c ') and (V
a ", V
b ", V
c ") between have raw 37 ° of phase shifts respectively.Voltage magnitude relation for A phase, transformer outlet voltage (V
a, V
a ', V
a ") amplitude with net side input voltage (V
a) amplitude meets following relation: V
a=0.5V
a, V
a '=V
a "=0.3835V
a.Figure 4 shows that buck 18 buys autotransformer input current theoretical waveforms, in figure, can find out that input current is 18 staircase waveforms.In 115V/400Hz input, when the load of 28V20A purely resistive exports, the input current waveform of Transformer Rectifier system as shown in Figure 5, input current is 18 staircase waveforms, major harmonic is 17,19 subharmonic, and total harmonic distortion is 8.37%, meets the requirement of aviation field harmonic standard.Accompanying drawing 6 is VD waveform, and voltage output value is 140.43V, and voltage ripple value is 0.2087V, and voltage ripple is little, and output voltage is steady, system stability.
Claims (2)
1. the winding construction of wide region buck 18 pulse autotransformer and connected mode, it is characterized in that: every 6 windings mutually of transformer, 4, its limit, Central Plains winding, secondary 2 windings, for A phase, the winding construction of this autotransformer and the concrete connected mode of winding are: 4, former limit winding, wherein one group extends winding (Aa), 3 short windings (a1a ', a ' b ", b " a2), short winding (the c1c of secondary 2, cb2), the electric current that each winding of former secondary flows through is different, but there is common port between winding, the head end (A) that the former limit of A phase extends winding (Aa) is A phase voltage input, connect input voltage source (V
a), end (a) winding (a1a short in B phase secondary, ac2) the centre tap a formed that is linked in sequence connects, common coating-forming voltage exit (a), be linked in sequence 3 groups of short windings in former limit of A phase (a1a ', a ' b ", b " a2) formation 2 voltage leading-out ends a ', b ", 3 groups of short windings in former limit (a1a ', a ' b ", b " a2) head end (a1) that the head end (a1) that formed and the short winding (a1a, ac2) of B phase secondary 2 be linked in sequence that is linked in sequence is connected, the end (a2) that 3 groups of short windings in former limit (a1a ', a ' b ", b " a2) are linked in sequence connects the short winding (b1b, ba2) of C phase secondary 2 end formed that is linked in sequence and is connected (a2), the short winding (c1c, cb2) of A phase secondary 2 is linked in sequence coating-forming voltage exit (c), the short winding of secondary (c1c, cb2) is linked in sequence and forms head end (c) and connect the short winding in the former limit of C phase (c1c ', c ' a ", a " c2) be linked in sequence the head end (c1) formed, short winding (the c1c of secondary, cb2) be linked in sequence formed tail end (b2) with the short winding in 3, the former limit of B phase (b1b ', b ' c ", c " b2) tail end (b2) that is connected to form of order is connected, and B phase is similar to A phase with the connected mode of C phase.
2. buck 18 pulse autotransformer realizes the method that regulates input voltage wide region (28V-280V) and winding turns compares relation, it is characterized in that: on the basis of claim 1, certain turn ratio relation is met between the every mutually former vice-side winding of autotransformer, for A phase, concrete turn ratio relation is described: turn ratio summation is as 1 to set the short winding in 3, former limit (a1a ', a ' b ", b " a2), and former limit extends the number of turn N of winding (Aa)
nrelation is met with step-down ratio:
the ratio that former limit extends winding (Aa) and the short winding in three, former limit (a1a ', a ' b ", b " a2) the summation number of turn is
the ratio that the short winding in three, former limit (a1a ', a ' b ", b " a2) and former limit extend the number of turn of winding (Aa) is 0.29875: 0.4025: 0.29875:
the ratio that the short winding (c1c, cb2) of secondary 2 and former limit extend the number of turn of winding (Aa) is 0.15896: 0.15896:
autotransformer exports principal voltage (V
a, V
b, V
c) amplitude is net side input phase voltage (V
a, V
b, V
c) amplitude 1/b doubly, boost voltage (V
a ', V
b ', V
c ') and (V
a ", V
b ", V
c ") voltage magnitude be net side input phase voltage (V
a, V
b, V
c) amplitude 0.767/b doubly, the phase place of exit a, a ', a " phase place differ 37 ° respectively, exit b, b ', b " differs 37 °, exit c, c ', c respectively " phase place differ 37 ° respectively, the ratio of the number of turn of B, C phase winding is consistent with A.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510736038.XA CN105515405B (en) | 2015-11-02 | 2015-11-02 | 18 pulse self coupling vertoro of wide scope buck |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510736038.XA CN105515405B (en) | 2015-11-02 | 2015-11-02 | 18 pulse self coupling vertoro of wide scope buck |
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| Publication Number | Publication Date |
|---|---|
| CN105515405A true CN105515405A (en) | 2016-04-20 |
| CN105515405B CN105515405B (en) | 2019-03-15 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106953532A (en) * | 2017-04-24 | 2017-07-14 | 福州大学 | The improvement topology and its implementation of multiple-pulse AC/DC converters in a kind of HVDC and VFD systems |
| CN107681904A (en) * | 2016-08-01 | 2018-02-09 | 苏交科集团股份有限公司 | A kind of low pressure shore electric power design |
| CN108074719A (en) * | 2017-11-28 | 2018-05-25 | 合肥华耀电子工业有限公司 | A kind of 18 pulse transformers |
| CN108551265A (en) * | 2018-04-23 | 2018-09-18 | 珠海万力达电气自动化有限公司 | Single-phase based on self coupling clamper structure zero turns Three-phase five-wire Railways Stations low-tension supply |
| CN112886833A (en) * | 2021-01-18 | 2021-06-01 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | 18-pulse voltage transformation rectifier winding |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681904A (en) * | 2016-08-01 | 2018-02-09 | 苏交科集团股份有限公司 | A kind of low pressure shore electric power design |
| CN106953532A (en) * | 2017-04-24 | 2017-07-14 | 福州大学 | The improvement topology and its implementation of multiple-pulse AC/DC converters in a kind of HVDC and VFD systems |
| CN106953532B (en) * | 2017-04-24 | 2019-04-02 | 福州大学 | The improvement topology and its implementation of multiple-pulse AC/DC converter in a kind of HVDC and VFD system |
| CN108074719A (en) * | 2017-11-28 | 2018-05-25 | 合肥华耀电子工业有限公司 | A kind of 18 pulse transformers |
| CN108074719B (en) * | 2017-11-28 | 2023-11-21 | 合肥华耀电子工业有限公司 | 18 pulse transformer |
| CN108551265A (en) * | 2018-04-23 | 2018-09-18 | 珠海万力达电气自动化有限公司 | Single-phase based on self coupling clamper structure zero turns Three-phase five-wire Railways Stations low-tension supply |
| CN112886833A (en) * | 2021-01-18 | 2021-06-01 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | 18-pulse voltage transformation rectifier winding |
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| CN105515405B (en) | 2019-03-15 |
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