CN108199592B - Power supply multimode rectification power supply circuit of high-power direct-current arc heater - Google Patents
Power supply multimode rectification power supply circuit of high-power direct-current arc heater Download PDFInfo
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- CN108199592B CN108199592B CN201711374645.1A CN201711374645A CN108199592B CN 108199592 B CN108199592 B CN 108199592B CN 201711374645 A CN201711374645 A CN 201711374645A CN 108199592 B CN108199592 B CN 108199592B
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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
- H02M7/145—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 thyratron or thyristor type requiring extinguishing means
- H02M7/155—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 thyratron or thyristor type requiring extinguishing means using semiconductor devices only
- H02M7/19—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 thyratron or thyristor type requiring extinguishing means using semiconductor devices only arranged for operation in series, e.g. for voltage multiplication
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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
- H02M7/145—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 thyratron or thyristor type requiring extinguishing means
- H02M7/155—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 thyratron or thyristor type requiring extinguishing means using semiconductor devices only
- H02M7/1552—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 thyratron or thyristor type requiring extinguishing means using semiconductor devices only in a biphase or polyphase arrangement
-
- 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
- H02M1/008—Plural converter units for generating at two or more independent and non-parallel outputs, e.g. systems with plural point of load switching regulators
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
Abstract
A multimode rectification power supply circuit powered by a high-power direct-current arc heater relates to the technical field of power electronic rectification; the direct current power supply comprises two sets of same rectifying power supply circuits and a direct current switch cabinet; two sets of rectification power supply circuits are connected in parallel between an external 10KV high-voltage power supply and a direct-current switch cabinet; each set of rectification power supply circuit comprises a high-voltage switch cabinet, a three-split rectifier transformer, a low-voltage power inlet cabinet, a rectification power cabinet and an arc stabilizing reactor; the high-voltage switch cabinet, the three-split rectifier transformer, the low-voltage power inlet cabinet, the rectifier power cabinet, the arc stabilizing reactor and the direct-current switch cabinet are sequentially connected; one end of the high-voltage switch cabinet is connected with an external 10KV high-voltage power supply; one end of the arc stabilizing reactor is connected with the direct current switch cabinet; the invention provides multi-mode current and voltage output, which can meet the operation of direct current arc heaters in different forms and 50MW magnitude of high power.
Description
Technical Field
The invention relates to the technical field of power electronic rectification, in particular to a power supply multimode rectification power supply circuit of a high-power direct-current arc heater.
Background
In the process of the spacecraft crossing the atmosphere, the high-speed friction can enable the surface material of the spacecraft to bear the external environments of high temperature, high pressure and the like. In order to prevent the damage and even damage of the spacecraft caused by pneumatic heating and cause serious accidents, the electric arc heating plasma wind tunnel is used as an effective means of an atmospheric environment simulation experiment of the spacecraft, a high-temperature and high-pressure state is mainly provided for the pneumatic environment simulation experiment of a reentry spacecraft, the high temperature of the electric arc is used for heating gas, screening, ablation and ablation appearance change experiments of heat-proof materials for the spacecraft can be provided, and a high-power rectification power supply for providing energy for a direct current electric arc heater is an essential important link in various experiments.
The high-power direct current arc heating equipment needs a high-voltage high-power rectification power supply to provide energy, and a rectification power supply system can provide voltage and current required by the heater according to different characteristics of the direct current heater. The simultaneous satisfaction of high voltage and high power is an examination of the rectification power supply equipment and an important direction of the development of power electronics. At present, the related technology does not meet the requirements of high voltage and high power at the same time.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides a power supply multimode rectification power supply circuit of a high-power direct current arc heater, provides multimode current and voltage output, and can meet the operation requirements of direct current arc heaters in different forms and the operation requirements of the high-power 50 MW-magnitude direct current arc heater.
The above purpose of the invention is realized by the following technical scheme:
the power supply multimode rectification power supply circuit of the high-power direct-current arc heater comprises two sets of same rectification power supply circuits and a direct-current switch cabinet; two sets of rectification power supply circuits are connected in parallel between an external 10KV high-voltage power supply and a direct-current switch cabinet; each set of rectification power supply circuit comprises a high-voltage switch cabinet, a three-split rectifier transformer, a low-voltage power inlet cabinet, a rectification power cabinet and an arc stabilizing reactor; the high-voltage switch cabinet, the three-split rectifier transformer, the low-voltage power inlet cabinet, the rectifier power cabinet, the arc stabilizing reactor and the direct-current switch cabinet are sequentially connected; one end of the high-voltage switch cabinet is connected with an external 10KV high-voltage power supply; one end of the arc stabilizing reactor is connected with the direct current switch cabinet.
In each set of the multi-mode rectification power supply circuit powered by the high-power direct-current arc heater, the output end of a high-voltage switch cabinet is connected with 6 three-split rectifier transformers in parallel; the output end of each three-split rectifier transformer is connected with 3 low-voltage power-in cabinets in parallel; the output ends of the 3 low-voltage power input cabinets are connected with one end of the 1 rectifying power cabinet.
In the power supply multi-mode rectifier power supply circuit of the high-power direct-current arc heater, 6 three-split rectifier transformers in each set of rectifier power supply circuit are divided into 2 groups, and each group comprises 3 three-split rectifier transformers; the phase shift angles of the 3 three-split rectifier transformers in the first group are-25 degrees, -5 degrees and +15 degrees respectively; the phase shift angles of the 3 three-split rectifier transformers in the second group are +5 degrees, +25 degrees and-15 degrees respectively.
When 12 three-split rectifier transformers in the two sets of rectifier power supply circuits work simultaneously, 36 pulse angle differences are formed in the multimode rectifier power supply circuit powered by the high-power direct-current arc heater.
In the power supply multi-mode rectification power supply circuit of the high-power direct current arc heater, each rectification power cabinet comprises 3 three-phase fully-controlled bridge rectification circuits; the input end of each three-phase fully-controlled bridge type rectifying circuit is connected with 1 low-voltage power inlet cabinet correspondingly; the output ends of the 3 three-phase full-control bridge type rectifying circuits in the rectifying power cabinet are connected in parallel with freewheeling diodes.
In the power supply multi-mode rectification power supply circuit of the high-power direct-current arc heater, the current of the output power supply of the rectification power cabinet is 3000A, and the voltage is 3500V.
In the power supply multimode rectification power supply circuit of the high-power direct-current arc heater, the switching-in quantity of the rectification power cabinet is selected by controlling the low-voltage power inlet cabinet.
In the power supply multi-mode rectification power supply circuit of the high-power direct current arc heater, each three-phase fully-controlled bridge rectification circuit comprises 6 thyristors and 1 diode; after being connected in series two by two, the 6 thyristors are respectively connected with the 1 diode in parallel; and every two thyristors connected in series are correspondingly connected with 1 low-voltage power-in cabinet; and 3 three-phase fully-controlled bridge rectifier circuits are connected in parallel and then are connected with the direct-current switch cabinet.
Compared with the prior art, the invention has the following advantages:
(1) the invention adopts 18 rectifier bridges in total of 6 rectifier units to form a multi-mode power supply structure, can switch a rectifier bridge group along with the experimental requirements to form the output capability of connecting 10500V multiplied by 6000A in parallel or 21000V multiplied by 3000A in series, and maximally meets the experimental requirements of direct current arc heaters in different forms. The two sets of rectification power supplies adopt a parallel mode, can provide the output capacity of 10500V multiplied by 12000A, and can meet the operation of a 50 MW-magnitude direct-current arc heater;
(2) the maximum output 36 pulse wave rectification, the power grid current distortion is small, the harmonic injection amount is small, the combination mode of the optimal bridge group is realized through the matching of different bridge groups, the harmonic content is reduced, and the system power factor is improved;
(3) the invention adopts a feedforward and feedback combined series nonlinear correction prediction composite control method to inhibit and eliminate the interference in the operation of the arc heater, ensure the stability of the arc and improve the robustness of a control system.
Drawings
FIG. 1 is a schematic diagram of a multi-mode rectified power system according to the present invention;
fig. 2 is a schematic circuit diagram of the rectification power cabinet of the present invention.
Detailed Description
The invention is described in further detail below with reference to the following figures and specific examples:
as shown in fig. 1, which is a schematic diagram of a multi-mode rectification power supply system, it can be known that a multi-mode rectification power supply circuit powered by a high-power dc arc heater is characterized in that: comprises two sets of same rectifying power circuits and a direct current switch cabinet 6; two sets of rectification power circuits are connected in parallel between an external 10KV high-voltage power supply and the direct-current switch cabinet 6; each set of rectification power supply circuit comprises a high-voltage switch cabinet 1, a three-split rectifier transformer 2, a low-voltage power inlet cabinet 3, a rectification power cabinet 4 and an arc stabilizing reactor 5; the high-voltage switch cabinet 1, the three-split rectifier transformer 2, the low-voltage power inlet cabinet 3, the rectifier power cabinet 4, the arc stabilizer reactor 5 and the direct-current switch cabinet 6 are sequentially connected; one end of the high-voltage switch cabinet 1 is connected with an external 10KV high-voltage power supply; one end of the arc stabilizing reactor 5 is connected with the direct current switch cabinet 6.
In each set of rectification power supply circuit, the output end of a high-voltage switch cabinet 1 is connected with 6 three-split rectifier transformers 2 in parallel; the output end of each three-split rectifier transformer 2 is connected with 3 low-voltage power-in cabinets 3 in parallel; the output ends of the 3 low-voltage power input cabinets 3 are connected with one ends of the 1 rectifying power cabinet 4. The arc stabilizing reactor 5 is connected in series with the combined output end of the rectification power cabinet 4, adopts a hollow reactance air cooling structure, has a design index of 3000A/6mh, can play a role in smoothing direct current, can inhibit circular current when two sets of rectification power supplies are connected in parallel, and ensures stable combustion of electric arcs.
The 6 three-split rectifier transformers 2 in each set of rectifier power supply circuit are divided into 2 groups, and each group comprises 3 three-split rectifier transformers 2; the phase shift angles of the 3 three-split rectifier transformers 2 in the first group are respectively-25 degrees, -5 degrees and +15 degrees; the phase shift angles of the 3 three-split rectifier transformers 2 in the second group are +5 degrees, +25 degrees and-15 degrees respectively. When 12 three-split rectifier transformers 2 in the two sets of rectifier power supply circuits work simultaneously, 36 pulse angle differences are formed. Each three-split rectifier transformer 2 is formed by arranging 3 pairs of high-voltage and low-voltage windings on an iron core, namely, the three-split rectifier transformer is a 3-split transformer, each split branch is provided with a three-phase rectifier bridge, and 3 bridges are connected in series. 3 windings on the iron core shift the phase at the same angle.
The current of the output power supply of the rectification power cabinet 4 is 3000A, and the voltage is 3500V. The low-voltage power inlet cabinet 3 adopts a 2500V/2500A medium-voltage vacuum switch and is matched with a permanent magnet operating mechanism so as to be suitable for frequent operation, and the selection of the access number of the rectification power cabinet 4 is realized by controlling the low-voltage power inlet cabinet 3. The 10KV power supply line is distributed to a three-split rectifier transformer 2 through a high-voltage switch cabinet 1, is subjected to voltage reduction and phase shift, then is input into a rectifier power cabinet 4 through a low-voltage power inlet cabinet 3, is subjected to alternating current-direct current rectification conversion under the control of an external control unit, and finally is output to a direct current switch cabinet 6 through an arc stabilizing reactor 5. The high-voltage switch cabinet 1 adopts a 10KV/2500A vacuum middle-placed cabinet, a feed-out bus is connected to a three-split rectifier transformer 2 in three ways, and three sets of current transformers are installed for detecting and protecting alternating current electric quantity.
As shown in fig. 2, which is a schematic circuit diagram of the rectification power cabinet, it can be known that the rectification power cabinet 4 includes 3 three-phase fully-controlled bridge rectifier circuits; the input end of each three-phase full-control bridge type rectifying circuit is connected corresponding to 1 low-voltage power inlet cabinet 3; the output ends of the 3 three-phase fully-controlled bridge rectifier circuits in the rectifier power cabinet 4 are connected in parallel with freewheeling diodes. Each three-phase fully-controlled bridge rectifier circuit comprises 6 thyristors 7 and 1 diode 8; after being connected in series two by two, the 6 thyristors 7 are respectively connected with the 1 diode 8 in parallel; and every two thyristors connected in series 7 are correspondingly connected with 1 low-voltage power inlet cabinet 3; and 3 three-phase fully-controlled bridge rectifier circuits are connected in parallel and then are connected with the direct-current switch cabinet 6.
The direct current switch cabinet 6 is internally provided with 20KV and 6000A isolating switches, and series-parallel connection output of the rectifying power supply is achieved through combination. Each set of power supply has the series output index of 10500V multiplied by 3000A and the parallel output index of 10500V multiplied by 3000A. And meanwhile, voltage and current sensors are arranged in the direct current switch cabinet 6 and used for measuring direct current and voltage parameters.
The invention can be applied to the operation, protection, current regulation and measurement of the 0.5-50 MW-magnitude direct current arc heater, and provides a power supply basis for designing a higher-power direct current arc heater.
Those skilled in the art will appreciate that those matters not described in detail in the present specification are well known in the art.
Claims (4)
1. The power supply multimode rectification power supply circuit of the high-power direct current arc heater is characterized in that: comprises two sets of same rectifying power circuits and a direct current switch cabinet (6); two sets of rectification power circuits are connected in parallel between an external 10KV high-voltage power supply and a direct-current switch cabinet (6); each set of rectification power supply circuit comprises a high-voltage switch cabinet (1), a three-split rectifier transformer (2), a low-voltage power inlet cabinet (3), a rectification power cabinet (4) and an arc stabilizing reactor (5); the high-voltage switch cabinet (1), the three-split rectifier transformer (2), the low-voltage power inlet cabinet (3), the rectification power cabinet (4), the arc stabilizing reactor (5) and the direct-current switch cabinet (6) are sequentially connected; one end of the high-voltage switch cabinet (1) is connected with an external 10KV high-voltage power supply; one end of the arc stabilizing reactor (5) is connected with the direct current switch cabinet (6);
in each set of rectification power supply circuit, the output end of a high-voltage switch cabinet (1) is connected with 6 three-split rectifier transformers (2) in parallel; the output end of each three-split rectifier transformer (2) is connected with 3 low-voltage power-in cabinets (3) in parallel; the output ends of the 3 low-voltage power input cabinets (3) are connected with one end of the 1 rectifying power cabinet (4);
6 three-split rectifier transformers (2) in each set of rectifier power supply circuit are divided into 2 groups, and each group comprises 3 three-split rectifier transformers (2); the phase shifting angles of 3 three-split rectifier transformers (2) in the first group are-25 degrees, -5 degrees and +15 degrees respectively; the phase shift angles of 3 three-split rectifier transformers (2) in the second group are +5 degrees, +25 degrees and-15 degrees respectively;
when 12 three-split rectifier transformers (2) in the two sets of rectifier power supply circuits work simultaneously, 36 pulse angle differences are formed;
each rectification power cabinet (4) comprises 3 three-phase fully-controlled bridge rectification circuits; the input end of each three-phase fully-controlled bridge type rectifying circuit is connected with 1 low-voltage power inlet cabinet (3) correspondingly; the output ends of the 3 three-phase fully-controlled bridge rectifier circuits in the rectifier power cabinet (4) are connected in parallel with freewheeling diodes.
2. The high power dc arc heater powered multimode rectified power supply circuit of claim 1, wherein: the current of the output power supply of the rectification power cabinet (4) is 3000A, and the voltage is 3500V.
3. The high power dc arc heater powered multimode rectified power supply circuit of claim 2, wherein: the selection of the access number of the rectification power cabinet (4) is realized by controlling the low-voltage power inlet cabinet (3).
4. The high power dc arc heater powered multimode rectified power supply circuit of claim 3, wherein: each three-phase fully-controlled bridge rectifier circuit comprises 6 thyristors (7) and 1 diode (8); after being connected in series two by two, the 6 thyristors (7) are respectively connected with the 1 diode (8) in parallel; and every two thyristors (7) connected in series are correspondingly connected with 1 low-voltage power-in cabinet (3); the 3 three-phase fully-controlled bridge type rectifying circuits are connected in parallel and then are connected with the direct-current switch cabinet (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711374645.1A CN108199592B (en) | 2017-12-19 | 2017-12-19 | Power supply multimode rectification power supply circuit of high-power direct-current arc heater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711374645.1A CN108199592B (en) | 2017-12-19 | 2017-12-19 | Power supply multimode rectification power supply circuit of high-power direct-current arc heater |
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| CN108199592A CN108199592A (en) | 2018-06-22 |
| CN108199592B true CN108199592B (en) | 2020-09-18 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4797389B2 (en) * | 2005-01-31 | 2011-10-19 | 富士電機株式会社 | Rectifier circuit |
| US7830681B2 (en) * | 2008-09-24 | 2010-11-09 | Teco-Westinghouse Motor Company | Modular multi-pulse transformer rectifier for use in asymmetric multi-level power converter |
| US8279640B2 (en) * | 2008-09-24 | 2012-10-02 | Teco-Westinghouse Motor Company | Modular multi-pulse transformer rectifier for use in symmetric multi-level power converter |
| CN101635198B (en) * | 2009-06-30 | 2011-05-11 | 东莞市光华实业有限公司 | 36-pulse high-power frequency conversion rectifier transformer |
| CN101635514B (en) * | 2009-08-27 | 2012-05-23 | 北京交通大学 | High-voltage power circuit adopting multi-split transformer |
| CN102255528B (en) * | 2010-05-19 | 2013-09-11 | 永济新时速电机电器有限责任公司 | High-voltage high-power power regulation device |
| CN101888093B (en) * | 2010-06-04 | 2012-09-05 | 济南轨道交通装备有限责任公司 | Low voltage ride through analogue system of wind generation system |
| CN105788830A (en) * | 2016-05-19 | 2016-07-20 | 东莞市光华实业有限公司 | 200kVA36 pulse phase-shifting transformer |
| CN206402112U (en) * | 2016-12-27 | 2017-08-11 | 厦门理工学院 | Bank electricity system high power frequency conversion power supply based on 36 pulse wave rectifiers |
| CN207652334U (en) * | 2017-12-19 | 2018-07-24 | 中国航天空气动力技术研究院 | The multi-modal rectification power circuit of high power DC electro-arc heater power supply |
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