CN102751886A - Phase shift balancing device of 18-pulse rectifier - Google Patents
Phase shift balancing device of 18-pulse rectifier Download PDFInfo
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- CN102751886A CN102751886A CN2012101684216A CN201210168421A CN102751886A CN 102751886 A CN102751886 A CN 102751886A CN 2012101684216 A CN2012101684216 A CN 2012101684216A CN 201210168421 A CN201210168421 A CN 201210168421A CN 102751886 A CN102751886 A CN 102751886A
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Abstract
The invention discloses a phase shift balancing device of an 18-pulse rectifier. The phase shift balancing device comprises a phase shift auto-transformer and a three-phase balancing electric reactor, wherein the phase shift auto-transformer has a group of inputs with 3fai 380V and two groups of outputs 3fai 380V, and two groups of outputs respectively shift phases at the same angle toward the opposite direction. The impedance of the three-phase balancing electric reactor is matched with the phase shift auto-transformer, and input end of the three-phase balancing electric reactor is connected with the input end of the phase shift auto-transformer and correspond to the phase shift auto-transformer in phase. The input end of the phase shift auto-transformer is connected with a grid side power supply, and the two groups of outputs of the phase shift auto-transformer and an output of the three-phase balancing electric reactor are balanced to form a part of the rectifier to supply electricity. The phase shift balancing device of the 18-pulse rectifier consists of a polygonal auto-transformer and the three-phase balancing electric reactor with small capability, calculated capability is about 17% of calculated capability of a traditional extending-edge connecting phase-shifting transformer, materials are saved, product volume and weight are decreased, and the product cost is reduced.
Description
Technical field
The present invention relates to a kind of transformer, in particular a kind of equilibrium shift device of 18 pulse rectifiers.
Background technology
Along with the develop rapidly of power electronic technology, increasing rectifier is applied to every field.Because the non-linear characteristics of rectifier cause netting the side input current and produce serious distortion, make the Electro Magnetic Compatibility of equipment reduce, and have brought harm to electrical network and other power consumption equipment.Therefore, how suppressing current harmonics is a vital task.Prior art is through increasing the umber of pulse of rectification, with the input current of raising rectifier and the characteristic of output voltage.Umber of pulse is many more, and the harmonic wave order in input current and the output voltage is high more.Transformer in the multiple-pulse rectifier just is equivalent to a passive filter, filtering the specific subharmonic in the output current.Through increasing the umber of pulse of rectification, can effectively reduce input current resultant distortion rate and mains ripple coefficient.For example, the input current resultant distortion rate of 18 pulse rectifiers only is about 10%, and the voltage fluctuation coefficient only is about 0.6%.But; Traditional extend-triangle 18 pulse transforming rectifiers are transferred to output through the coupling of transformer magnetic with intake fully; So the Capacity Ratio of this transformer is bigger, the volume and weight of high-power transformer is all very big, and then causes that product cost is very high, production efficiency is also low.So 18 pulse rectifiers exist because of its transformer capacity excessively in the prior art, and then cause the technical problem that production cost is high, production efficiency is low.
Therefore, prior art awaits to improve and development.
Summary of the invention
The object of the present invention is to provide a kind of equilibrium shift device of 18 pulse rectifiers, exist because of its transformer capacity excessively, and then cause the technical problem that production cost is high, production efficiency is low to solve in the above-mentioned prior art 18 pulse rectifiers.
Technical scheme of the present invention is following:
A kind of equilibrium shift device of 18 pulse rectifiers; Wherein, comprise phase-shifting autotransformer and three-phase equilibrium reactor, said phase-shifting autotransformer be input as 1 group of 3 Φ 380V; Be output as 2 group of 3 Φ 380V, said two groups of outputs are phase shift equal angular round about respectively; The impedance and the phase-shifting autotransformer of said three-phase equilibrium reactor are complementary, and said three-phase equilibrium reactor input termination phase-shifting autotransformer input and phase place are corresponding; The input termination net side power supply of said phase-shifting autotransformer, output three tunnel balances of two groups of said phase-shifting autotransformer output and three-phase equilibrium reactor are that said rectifier is partly supplied power.
The equilibrium shift device of described 18 pulse rectifiers, wherein, said phase-shifting autotransformer comprises iron core and line bag, said line holds and on iron core, makes two groups of output impedance of said phase-shifting autotransformer equate.
The equilibrium shift device of described 18 pulse rectifiers, wherein, the phase shift angles of two groups of said phase-shifting autotransformer outputs are respectively+20 ° with-20 °.
The equilibrium shift device of described 18 pulse rectifiers, wherein, said phase-shifting autotransformer is the polygon autotransformer.
The equilibrium shift device of described 18 pulse rectifiers, wherein, said phase-shifting autotransformer is an inequilateral hexagon 3-phase autotransformer.
The present invention is through forming the equilibrium shift device of 18 pulse rectifiers with a polygon autotransformer and than the three-phase equilibrium reactor of low capacity; Its calculated capacity is merely traditional limit of prolonging and connects about 17% of phase shifting transformer; Practice thrift material, reduced small product size and weight has reduced product cost.In addition,, make product idling load-loss be minimized, improved the efficient of complete machine, for the multiple-pulse rectification provides scheme preferably because of reducing of this device calculated capacity.
Description of drawings
Fig. 1 is that the electrical equipment of 18 impulse commutation equilibrium shift devices among the present invention connects sketch map.
Fig. 2 is a phase-shifting autotransformer winding connection layout among the present invention.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, clear and definite, below develop simultaneously embodiment to further explain of the present invention with reference to accompanying drawing.
Electrical equipment like 18 impulse commutation equilibrium shift devices among Fig. 1 the present invention connects shown in the sketch map, and it comprises phase-shifting autotransformer 1 and three-phase equilibrium reactor 2.Phase-shifting autotransformer 1 is the polygon autotransformer, is input as one group of 3 Φ 380V, is output as two group of 3 Φ 380V.Shown in phase-shifting autotransformer winding connection layout among Fig. 2 the present invention, phase-shifting autotransformer 1 comprises iron core 3 and line bag 4, line bag 4 wound cores 3, and through the reasonable Arrangement to winding, two groups of outputs are set to balanced structure, and impedance equates.In the present embodiment, phase-shifting autotransformer 1 can further specifically be set to an inequilateral hexagon 3-phase autotransformer, two groups of output respectively phase shift+X ° with-X °, the numerical value of X is set to 20 in the present embodiment.The impedance of three-phase equilibrium reactor 2 and phase-shifting autotransformer 1 are complementary, and make the impedance balances of three groups of the present invention's 18 impulse commutation equilibrium shift devices outputs.
Phase-shifting autotransformer 1 is provided with three-phase input interface A, B, C, and three-phase input interface A, B, C connect Ua, Ub, the Uc of power end respectively.Also be provided with one group of three-phase output interface a1, b1, c1 on the phase-shifting autotransformer 1, two groups of three-phase output interface a2, b2, c2.The input of three-phase equilibrium reactor 2 is electrically connected with three-phase input interface A, B, the C of phase-shifting autotransformer 1; Phase place is corresponding; The output of three-phase equilibrium reactor 2 is with respect to not phase shift of power end (phase place is 0 °), and the output interface of three-phase equilibrium reactor 2 is respectively a3, b3, c3.One group of three-phase output of last phase-shifting autotransformer 1, two groups of three-phase outputs, and the output of three-phase equilibrium reactor 2, totally three tunnel output balanced feedings are given the rectifier part, accomplish 18 impulse commutations.
For example, one 18 pulse 100KVA rectification phase shifting equipment of trial-production.Through calculating and experiment learns that phase-shifting autotransformer 1 capacity gets the just exportable corresponding electric current of 16KVA, recording the specified input voltage and input current of transformer is 3 Φ 380V/103A, and the two output voltage electric current is respectively 3 Φ 380V/50A.Interphase reactor 2 pressure drops are that 50A just can make the output of 3 tunnel balances for the 8V electric current, and being scaled inductance value is 0.51mH, and the reactor capacity is about 0.6KVA.The total capacity of this bascule is about 17KVA, only accounts for 17% with respect to whole power supply capacity 100KVA.Like this; With the just capacity of exportable 100KVA of the self coupling equilibrium shift device of a 17KVA; The characteristics of autotransformer electromagnetic coupled have been made full use of; Practiced thrift material and significantly reduced product cost, reduced the convenient transportation of small product size and weight and install, reduced product idling load-loss and improved overall efficiency, for the multiple-pulse rectification provides scheme preferably.
Should be understood that application of the present invention is not limited to above-mentioned giving an example, concerning those of ordinary skills, can improve or conversion that all these improvement and conversion all should belong to the protection range of accompanying claims of the present invention according to above-mentioned explanation.
Claims (5)
1. the equilibrium shift device of a pulse rectifier; It is characterized in that, comprise phase-shifting autotransformer and three-phase equilibrium reactor, said phase-shifting autotransformer be input as 1 group of 3 Φ 380V; Be output as 2 group of 3 Φ 380V, said two groups of outputs are phase shift equal angular round about respectively; The impedance and the phase-shifting autotransformer of said three-phase equilibrium reactor are complementary, and said three-phase equilibrium reactor input termination phase-shifting autotransformer input and phase place are corresponding; The input termination net side power supply of said phase-shifting autotransformer, output three tunnel balances of two groups of said phase-shifting autotransformer output and three-phase equilibrium reactor are that said rectifier is partly supplied power.
2. the equilibrium shift device of 18 pulse rectifiers according to claim 1 is characterized in that, said phase-shifting autotransformer comprises iron core and line bag, and said line holds and on iron core, makes two groups of output impedance of said phase-shifting autotransformer equate.
3. the equilibrium shift device of 18 pulse rectifiers according to claim 1 is characterized in that, the phase shift angles of two groups of said phase-shifting autotransformer outputs are respectively+20 ° with-20 °.
4. the equilibrium shift device of 18 pulse rectifiers according to claim 1 is characterized in that, said phase-shifting autotransformer is the polygon autotransformer.
5. the equilibrium shift device of 18 pulse rectifiers according to claim 1 is characterized in that, said phase-shifting autotransformer is an inequilateral hexagon 3-phase autotransformer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101684216A CN102751886A (en) | 2012-05-28 | 2012-05-28 | Phase shift balancing device of 18-pulse rectifier |
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| CN2012101684216A CN102751886A (en) | 2012-05-28 | 2012-05-28 | Phase shift balancing device of 18-pulse rectifier |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103036468A (en) * | 2013-01-21 | 2013-04-10 | 南京航空航天大学 | Current source type bidirectional multipulse converter based on polarity-variable direct current bus |
| CN103326557A (en) * | 2013-06-29 | 2013-09-25 | 孙崇山 | Capacitance compensation energy saving system on valve side of rectifier unit |
| CN103559991A (en) * | 2013-09-02 | 2014-02-05 | 昆山宝誉斯电源科技有限公司 | Side-extended-triangle-shaped autotransformer |
| CN103594237A (en) * | 2013-11-28 | 2014-02-19 | 佛山市欧立电子有限公司 | 18-pulse phase shift rectifier transformer |
| US9184591B2 (en) | 2012-11-21 | 2015-11-10 | Rolls-Royce Plc | Electrical system |
| CN105120562A (en) * | 2015-08-31 | 2015-12-02 | 上海泓语电气技术有限公司 | High-voltage DC LED lighting driving circuit based on multi-pulse rectification |
| CN105515405A (en) * | 2015-11-02 | 2016-04-20 | 南京航空航天大学 | Wide-range step-down 18-pulse self-coupling transformer rectifier |
| CN105914740A (en) * | 2016-04-20 | 2016-08-31 | 江阴宏龙节能技术有限公司 | Electromagnetic shifting energy saver |
| EP3893379A1 (en) * | 2020-04-09 | 2021-10-13 | Hamilton Sundstrand Corporation | N x 18-pulse autotransformer rectifier unit (atru) system with controlled adjustable balancing resistor |
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| US6982884B1 (en) * | 2004-08-23 | 2006-01-03 | Derek Albert Paice | Autotransformers to parallel AC to DC converters |
| US20110216564A1 (en) * | 2007-01-05 | 2011-09-08 | Mahesh Swamy | Eighteen Pulse Rectification Scheme For Use With Variable Frequency Drives |
| CN202009334U (en) * | 2009-11-04 | 2011-10-12 | 洛克威尔自动控制技术股份有限公司 | Power circuit |
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2012
- 2012-05-28 CN CN2012101684216A patent/CN102751886A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6982884B1 (en) * | 2004-08-23 | 2006-01-03 | Derek Albert Paice | Autotransformers to parallel AC to DC converters |
| US20110216564A1 (en) * | 2007-01-05 | 2011-09-08 | Mahesh Swamy | Eighteen Pulse Rectification Scheme For Use With Variable Frequency Drives |
| CN202009334U (en) * | 2009-11-04 | 2011-10-12 | 洛克威尔自动控制技术股份有限公司 | Power circuit |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9184591B2 (en) | 2012-11-21 | 2015-11-10 | Rolls-Royce Plc | Electrical system |
| CN103036468B (en) * | 2013-01-21 | 2016-01-06 | 南京航空航天大学 | Based on the current source type bidirectional multi-pulse current transformer of variable polarity DC bus |
| CN103036468A (en) * | 2013-01-21 | 2013-04-10 | 南京航空航天大学 | Current source type bidirectional multipulse converter based on polarity-variable direct current bus |
| CN103326557A (en) * | 2013-06-29 | 2013-09-25 | 孙崇山 | Capacitance compensation energy saving system on valve side of rectifier unit |
| CN103559991A (en) * | 2013-09-02 | 2014-02-05 | 昆山宝誉斯电源科技有限公司 | Side-extended-triangle-shaped autotransformer |
| CN103594237A (en) * | 2013-11-28 | 2014-02-19 | 佛山市欧立电子有限公司 | 18-pulse phase shift rectifier transformer |
| CN103594237B (en) * | 2013-11-28 | 2016-02-03 | 佛山市欧立电子有限公司 | A kind of 18 pulse phase shifting rectifier transformers |
| CN105120562A (en) * | 2015-08-31 | 2015-12-02 | 上海泓语电气技术有限公司 | High-voltage DC LED lighting driving circuit based on multi-pulse rectification |
| CN105515405A (en) * | 2015-11-02 | 2016-04-20 | 南京航空航天大学 | Wide-range step-down 18-pulse self-coupling transformer rectifier |
| CN105515405B (en) * | 2015-11-02 | 2019-03-15 | 南京航空航天大学 | 18 pulse self coupling vertoro of wide scope buck |
| CN105914740A (en) * | 2016-04-20 | 2016-08-31 | 江阴宏龙节能技术有限公司 | Electromagnetic shifting energy saver |
| EP3893379A1 (en) * | 2020-04-09 | 2021-10-13 | Hamilton Sundstrand Corporation | N x 18-pulse autotransformer rectifier unit (atru) system with controlled adjustable balancing resistor |
| GB2595842A (en) * | 2020-04-09 | 2021-12-15 | Hamilton Sundstrand Corp | Autotransformer rectifier unit system |
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Application publication date: 20121024 |