CN108551254B - Rectifying and filtering device and calculation method of CLARK conversion thereof - Google Patents
Rectifying and filtering device and calculation method of CLARK conversion thereof Download PDFInfo
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- CN108551254B CN108551254B CN201810656271.0A CN201810656271A CN108551254B CN 108551254 B CN108551254 B CN 108551254B CN 201810656271 A CN201810656271 A CN 201810656271A CN 108551254 B CN108551254 B CN 108551254B
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- filtering
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- 238000001914 filtration Methods 0.000 title claims abstract description 42
- 238000004364 calculation method Methods 0.000 title claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 title abstract description 7
- 239000003990 capacitor Substances 0.000 claims description 7
- 238000004804 winding Methods 0.000 claims description 5
- 230000009466 transformation Effects 0.000 claims description 4
- 239000013598 vector Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052782 aluminium Inorganic materials 0.000 abstract description 3
- 229910052802 copper Inorganic materials 0.000 abstract description 3
- 239000010949 copper Substances 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 150000003839 salts Chemical class 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 108091006146 Channels Proteins 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000000844 transformation Methods 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
- H02M1/00—Details of apparatus for conversion
- H02M1/14—Arrangements for reducing ripples from dc input or output
-
- 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
- H02M7/02—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
- H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Ac-Ac Conversion (AREA)
- Rectifiers (AREA)
Abstract
The invention discloses a rectifying and filtering device and a calculation method of CLARK conversion thereof, wherein the rectifying and filtering device comprises 4 groups of filtering circuits, each group of filtering circuits comprises 3 groups of LC circuits, and the LC circuits are connected in parallel with the LC circuits; the LC circuit includes an inductance and a capacitance, the inductance and the capacitance being connected in series. The rectifying and filtering device and the calculating method of CLARK conversion thereof provided by the invention are used for filtering 12-phase rectification, are suitable for rectifying transformer output filtering related to electrolytic copper, electrolytic aluminum and electrolytic salt and electrified railway, and can meet the market demands by adopting the subway rectifying transformer output filtering and intermediate frequency furnace rectifying transformer output filtering technology.
Description
Technical Field
The invention relates to the technical field of passive filtering, in particular to a rectifying and filtering device and a calculation method of CLARK conversion thereof.
Background
The power filter is a filter circuit composed of a capacitor, an inductor and a resistor, and can effectively filter the frequency point of the specific frequency or the frequency outside the frequency point in the power line to obtain a power signal of the specific frequency or eliminate the power signal of the specific frequency. With the development of the electronic industry, most of output currents of the high-power rectifier are regulated by adopting a regulating transformer except for traditional phase control rectification, and the primary voltage of the rectifying transformer is directly regulated to change the secondary voltage. In the prior art, the power passive filter has a three-phase structure, and can not filter the 12-phase rectifying device, so that the power passive filter is unfavorable for adapting to the market demand.
Disclosure of Invention
The invention aims to provide a rectifying and filtering device and a calculation method of CLARK conversion thereof.
The rectifying and filtering device comprises 4 groups of filtering circuits (1), wherein each group of filtering circuits comprises 3 groups of LC circuits (2), and the LC circuits (2) are connected with the LC circuits (2) in parallel; the LC circuit (2) comprises an inductor (3) and a capacitor (4), and the inductor (3) is connected in series with the capacitor (4).
The rectifying and filtering device and the calculating method of CLARK conversion thereof provided by the invention are used for filtering 12-phase rectification, are suitable for rectifying transformer output filtering related to electrolytic copper, electrolytic aluminum and electrolytic salt and electrified railway, and can meet the market demands by adopting the subway rectifying transformer output filtering and intermediate frequency furnace rectifying transformer output filtering technology.
Drawings
Fig. 1 is a schematic structural diagram of a rectifying and filtering device provided by the invention;
fig. 2 and 3 are topological diagrams of the rectifying and filtering device provided by the invention;
the figures are labeled as follows:
a 1-filter circuit; a 2-LC circuit; 3-inductance; 4-capacitance.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
As shown in fig. 1, 2 and 3, the rectifying and filtering device provided in this embodiment includes 4 groups of filtering circuits 1, each group of filtering circuits includes 3 groups of LC circuits 2, and the LC circuits 2 are connected in parallel with the LC circuits 2; the LC circuit 2 comprises an inductance 3 and a capacitance 4, the inductance 3 being connected in series with the capacitance 4.
It can be understood by those skilled in the art that the rectifying and filtering device provided by the embodiment is suitable for filtering 12-phase rectification, and is applicable to the rectifying transformer output filtering and electrified railway related to electrolytic copper, electrolytic aluminum and electrolytic salt, the subway rectifying transformer output filtering and intermediate frequency furnace rectifying transformer output filtering technology, and can meet the market demands.
Further, the inductor 3 is a three-phase three-column iron core inductor, and the capacitor 4 is connected in a three-phase circuit through a star connection method.
As can be appreciated by those skilled in the art, A1, B1, C1 are a set of three-phase three-pole core inductors, and the capacitance is a set of three-phase star connections; a2, B2 and C2 are a group, the inductance is a three-phase three-column iron core inductance, and the capacitance is a three-phase star connection; a3, B3 and C3 are a group, the inductance is a three-phase three-column iron core inductance, and the capacitance is a three-phase star connection; a4, B4 and C4 are a group, the inductance is a three-phase three-column iron core inductance, and the capacitance is a three-phase star connection method; the four groups are a set of 12-phase filter devices. Since phase 12 is a symmetrical load, the zero sequence channel is not considered.
Further, the rectifying and filtering device is arranged into four different groups, and each group is provided with three winding heads with different windings.
Further, the rectifying and filtering device further comprises a first transformer and a second transformer, wherein the first transformer and the second transformer are respectively connected through two groups of secondary winding circuits and are connected into 6-phase alternating currents with 60 degrees of phase difference through different groups of angles.
Further, the primary of the first transformer is connected through a star; the primary of the second transformer is connected through an angle.
Further, the secondary voltage vectors of the first transformer and the second transformer are different by 30 degrees.
Those skilled in the art will appreciate that adjusting the primary voltage of the rectifier transformer directly to change the secondary voltage is advantageous in adjusting the valve side current. The rectifier transformer has two independent transformers with different wiring groups of the same capacity, each transformer has two groups of secondary windings, and 6 phase alternating current with 60 degrees phase difference can be formed by the angle connection of different groups. The two rectifier transformers are connected in star-type and in corner-type, so that the voltage vectors at the secondary side are 30 degrees apart. Such that the two transformers constitute a 12-phase alternating current output. The 12-phase alternating current is rectified into 24-pulse direct current, and direct current power supply is provided for direct current electric equipment.
Example two
The calculation method of the rectifying and filtering device CLARK transformation provided by the embodiment adopts the following formula for calculation:
Uα＝A1+A2*Sin(π/6)+A3*Sin(π/3)+B1*Sin(2π/3)+B2*Sin(5π/6)
-b3+b4 x Sin (7pi/6) +c1 x Sin (4pi/3) +c3 x Sin (5pi/3) +c4 x Sin (11pi/6), A1, A3, B1, B2, B3, B4, C1, C3, C4 represent different coordinate values, uα represents a coordinate value on the α axis of the stationary coordinate system;
Uβ＝A2*Sin(π/3)+A3*Sin(5π/6)-A4+B1*Sin(7π/6)+B2*Sin(4π/3)
+B4+C1+Sin (11pi/6) +C3+Sin (pi/6) +C4+Sin (pi/3), A2, A3, A4, B1, B2, B4, C1, C3, C4 represent different coordinate values, Uβ represents a coordinate value on the β axis of the stationary coordinate system.
Those skilled in the art will appreciate that other transformations are the same as the three-phase transformation principle, from a three-phase a-B-C coordinate system to a two-phase α - β coordinate system, facilitating phase locking.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (3)
1. A rectifying and filtering device, characterized by comprising 4 sets of filtering circuits (1), each set of filtering circuits comprising 3 sets of LC circuits (2), the LC circuits (2) being connected in parallel with the LC circuits (2); the LC circuit (2) comprises an inductor (3) and a capacitor (4), and the inductor (3) is connected in series with the capacitor (4);
the rectifying and filtering device also comprises a first transformer and a second transformer, wherein the first transformer and the second transformer are respectively connected through two groups of secondary winding circuits and are connected into 6-phase alternating current with the phase difference of 60 degrees through different groups of angles, the two transformers form 12-phase alternating current output, and the 12-phase alternating current is rectified into 24-pulse direct current;
the primary of the first transformer is connected through a star; the primary of the second transformer is connected through an angle;
the calculation method of the rectifying and filtering device CLARK transformation comprises the following steps:
Uα＝A1+A2*Sin(π/6)+A3*Sin(π/3)+B1*Sin(2π/3)+B2*Sin(5π/6)
-b3+b4 x Sin (7pi/6) +c1 x Sin (4pi/3) +c3 x Sin (5pi/3) +c4 x Sin (11pi/6), A1, A3, B1, B2, B3, B4, C1, C3, C4 represent different coordinate values, uα represents a coordinate value on the α axis of the stationary coordinate system;
Uβ＝A2*Sin(π/3)+A3*Sin(5π/6)-A4+B1*Sin(7π/6)+B2*Sin(4π/3)
+B4+C1+Sin (11pi/6) +C3+Sin (pi/6) +C4+Sin (pi/3), A2, A3, A4, B1, B2, B4, C1, C3, C4 represent different coordinate values, Uβ represents a coordinate value on the β axis of the stationary coordinate system.
2. Rectifying and filtering device according to claim 1, characterized in that said inductance (3) is a three-phase three-leg core inductance, said capacitors (4) being connected in a three-phase circuit by means of star connection.
3. The rectifying-and-filtering device of claim 1, wherein the secondary measured voltage vectors of the first transformer and the second transformer differ by 30 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810656271.0A CN108551254B (en) | 2018-06-24 | 2018-06-24 | Rectifying and filtering device and calculation method of CLARK conversion thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810656271.0A CN108551254B (en) | 2018-06-24 | 2018-06-24 | Rectifying and filtering device and calculation method of CLARK conversion thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108551254A CN108551254A (en) | 2018-09-18 |
| CN108551254B true CN108551254B (en) | 2024-01-23 |
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| CN201810656271.0A Active CN108551254B (en) | 2018-06-24 | 2018-06-24 | Rectifying and filtering device and calculation method of CLARK conversion thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1079654A (en) * | 1965-03-12 | 1967-08-16 | Gen Electric Co Ltd | Improvements in or relating to frequency converters |
| CN1399389A (en) * | 2002-08-14 | 2003-02-26 | 来林娟 | Passive filtering method and passive filter circuit |
| CN2600966Y (en) * | 2002-08-14 | 2004-01-21 | 来林娟 | High-performance passive three-phase filter circuit |
| CN201186619Y (en) * | 2008-04-08 | 2009-01-28 | 北京交通大学 | Traction power supply equipment based on PWM rectifier |
| CN102360856A (en) * | 2011-11-04 | 2012-02-22 | 广西恒顺电器有限公司 | 110kV multipurpose high-efficiency and energy-saving rectifier transformer special for producing silicon carbide |
| CN106411146A (en) * | 2016-11-16 | 2017-02-15 | 株洲中车时代装备技术有限公司 | 12-pulse wave voltage-type reversible rectifying device and control method |
-
2018
- 2018-06-24 CN CN201810656271.0A patent/CN108551254B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1079654A (en) * | 1965-03-12 | 1967-08-16 | Gen Electric Co Ltd | Improvements in or relating to frequency converters |
| CN1399389A (en) * | 2002-08-14 | 2003-02-26 | 来林娟 | Passive filtering method and passive filter circuit |
| CN2600966Y (en) * | 2002-08-14 | 2004-01-21 | 来林娟 | High-performance passive three-phase filter circuit |
| CN201186619Y (en) * | 2008-04-08 | 2009-01-28 | 北京交通大学 | Traction power supply equipment based on PWM rectifier |
| CN102360856A (en) * | 2011-11-04 | 2012-02-22 | 广西恒顺电器有限公司 | 110kV multipurpose high-efficiency and energy-saving rectifier transformer special for producing silicon carbide |
| CN106411146A (en) * | 2016-11-16 | 2017-02-15 | 株洲中车时代装备技术有限公司 | 12-pulse wave voltage-type reversible rectifying device and control method |
Non-Patent Citations (2)
| Title |
|---|
| 500kV 直流融冰兼动态无功补偿系统研发与工程试点;申屠刚等;《电力系统自动;第33卷(第23期);第75-80页 * |
| Dynamic Multiphase Induction Machine Models for Smart Drive Applications Under Different Operating Conditions;Sukhwinder Singh Dhillon等;《2013 International Conference on Control Communication and Computing (ICCC)》;第400-405页 * |
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| CN108551254A (en) | 2018-09-18 |
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