CN201113775Y - Large power high voltage frequency conversion combination type power unit - Google Patents
Large power high voltage frequency conversion combination type power unit Download PDFInfo
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- CN201113775Y CN201113775Y CNU2007200707361U CN200720070736U CN201113775Y CN 201113775 Y CN201113775 Y CN 201113775Y CN U2007200707361 U CNU2007200707361 U CN U2007200707361U CN 200720070736 U CN200720070736 U CN 200720070736U CN 201113775 Y CN201113775 Y CN 201113775Y
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Abstract
The utility model relates to a high-power high-voltage frequency conversion composite power unit, which is characterized in that: the high-power high-voltage frequency conversion composite power unit consists of a shell, a rectification part, a power inversion part, an external thyristor bypass part, a baffle plate and rail pulleys, wherein, the drawer type rectification part and the drawer type power inversion part are arranged on the rail pulleys on both sides of the inside of the shell; the rectification part is connected with a copper bar and the power inversion part through direct current; the external thyristor bypass part is arranged on the baffle plate on the outside of the shell and connected with the power inversion part. The high-power high-voltage frequency conversion composite power unit has the advantages of compact structure and easy assembly and maintenance.
Description
Technical field
The utility model relates to a kind of high-power high voltage frequency conversion composite type power cell, is used for the high-power high voltage RHVC, belongs to the high-pressure frequency-conversion technical field.
Background technology
High-power high voltage frequency converter and relevant derived product thereof are not last as yet difficult problems that successfully solves in the power electronics industry, it also is the focus that the sector is competitively paid close attention in the worldwide in recent years, at present, usually adopt high-voltage frequency changing standard transducing power unit in high voltage converter, the detailed description of this power cell is 200610010549.4 patent application referring to Chinese application number.
In use there are following problems in this power cell:
1. because its radiator volume and heat dissipation capacity are limited, move, use and can't adapt to powerful high-voltage frequency conversion and speed-adjusting device so its power cell can only satisfy under smaller power;
2. this power cell adopts the capacitor array that electrochemical capacitor constitutes, though the electrolytic capacitor content volume is than big, but it is withstand voltage not high enough, in the power cell of high-voltage frequency conversion and speed-adjusting device, must series connection use, the heating and all the problem of pressing all cause reliability decrease, and roughly 5 years general electrochemical capacitor life-span, it is all higher to change workload and cost;
3. the bypass circuit of this power cell, form by single-phase diode rectifier bridge and the thyristor that generally adopt now on the inverter bridge next door, when just powering on, the voltage at thyristor two ends is zero, when power module insulating grid bipolar transistor begins moment of normally, thyristor will tolerate the dv/dt above its tolerance, so just causes misleading of thyristor easily, cause the inverter bridge output short-circuit, thereby power model is broken down;
4. this power cell adopts U shell body structure, though compact, for the complete machine of high-voltage frequency conversion and speed-adjusting device, there is all inconvenient problem of loading and unloading and maintenance.
Summary of the invention
The purpose of this utility model provides a kind of compact conformation, assembling and the high-power high voltage frequency conversion composite type power cell of safeguarding easily.
For realizing above purpose, the technical solution of the utility model provides a kind of high-power high voltage frequency conversion composite type power cell, it is characterized in that, form by housing, rectifying part, power inverting part, external thyristor bypass segment, dividing plate and track pulley, on the track pulley that partly places both sides in the housing for the rectifying part and the power inverting of drawer type, rectifying part connects copper bar and power inverting part by direct current, external thyristor bypass segment places on the outer dividing plate of housing, partly is connected with power inverting.
The utility model is to make rectification module and IGBT module all reach better radiating effect, so rectifying part and power inverting partly are respectively two relatively independent cell mesh, connect by copper bar, satisfy the requirement of circuit theory and electric aspect; External thyristor part partly links to each other with power inverting, when power cell breaks down, plays the autoelectrinic bypass and does not influence the important function that complete machine normally moves.
The utility model has the advantages that:
1. Tong Yibiaozhun drawer-type structure: rectification unit and power inverting unit all are drawer-type structures, and housing adopts high voltage insulating materials once molding formed, has both guaranteed High-Voltage Insulation intensity and process consistency, and guarantee that the drawer type housing is used interchangeably;
2. adopt bus copper bar structure, can reduce stray inductance effectively, simultaneously, the clearance for insulation by between the thickness formation positive and negative busbar copper bar of a plug-in unit connection of four utmost points copper bar had both made things convenient for installation, had reached the dielectric voltage withstand requirement again.
3. plug-in structure easily: rectification unit and power inverting unit are the plug-in structure, adopt plug-in unit of input and output, secondary plug-in unit in the unit housings, unit housings and whole unit support have then adopted slideway and unit track pulley to carry out support and connection, realized that with cabinet plug is connected, the housing front panel also is equipped with the unit handle, makes things convenient for the plug of unit;
4. high-level interchangeability: power cell adopts the insulated gate bipolar transistor power model, drive circuit is simple, technology maturation is reliable, in addition, power cell adopts modular construction, all power cells in the same frequency converter can exchange under situation about not making any change, and simultaneously, keep in repair also very convenient; 3
5. relatively independent cooling system: all reach better radiating effect for making rectification module and IGBT module, so rectifying part and power inverting partly are respectively two relatively independent cell mesh, and rectification module and IGBT module all have the own independent radiator that uses, and make it that heat radiation power that is fit to separately is provided;
6. the ducting system of good radiating effect: because each unit has all adopted once molding formed drawer-type structure, and have air inlet in the bottom, have air outlet at the rear portion, so the whole unit structure can form a ducting system effectively, from behind the entire heat dissipation system is carried out the exhausting heat radiation, fully cooled so that be installed on the rectification module and the IGBT module of spreader surface, the temperature rise of strict power controlling device is no more than rated value, to satisfy power device operate as normal in specified temperature range;
7. Xian Jin support capacitor group: supporting the capacitor component is four parts, one of them is positioned at power inverting unit housings inside, one is positioned at rectifier bridge unit housings bottom, and all the other two are positioned at rectifier bridge unit housings inside, have guaranteed the requirement to capacitance.Support capacitor and adopted nonpolarity electric capacitor, this electric capacity adopts special inlet electrode insulating material, and through special PROCESS FOR TREATMENT, withstand voltage high power capacity is big, and stray inductance is little, and self-healing ability is arranged, and caloric value is extremely low;
8. superior external thyristor structure: thyristor units is placed beyond the unit housings, make that not only the unit internal structure is compact more, succinct, safeguard easily, can also be when power cell break down, play the autoelectrinic bypass and do not influence the important function of the normal operation of complete machine;
9. the insulated gate bipolar transistor drive plate of direct insertion installation: whether conducting of the drive signal of IGBT module, it is the most important precondition that can whole power cell operate as normal, but but this drive signal very easily is interfered, therefore drive plate and the absorption capacitor with insulated gate bipolar transistor is directly installed on the IGBT module, make the driving connecting line length of insulated gate bipolar transistor drive plate and IGBT module the shortest, can reach the operation standard well;
10. the IGBT module of symmetrical expression is installed: the direct current input after the rectification is arranged fully symmetrically with IGBT module, can effectively reduce its distributed inductance.So is symmetry axis with IGBT module with the central shaft of a plug-in unit of two four utmost points, symmetry arrangement is on radiator, it is identical so just to make the IGBT module branch be clipped to separately the distance of the direct current both positive and negative polarity that connects, play good current-sharing effect, reduced distributed inductance simultaneously.
Description of drawings
Fig. 1 is a high-power high voltage frequency conversion composite type power cell structure schematic diagram;
Fig. 2 is the rectifying part structural representation;
Fig. 3 is a power inverting part-structure schematic diagram;
Fig. 4 is external thyristor bypass segment structural representation.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment
As shown in Figure 1, be high-power high voltage frequency conversion composite type power cell structure schematic diagram, described a kind of high-power high voltage frequency conversion composite type power cell is by housing A, rectifying part B, the power inverting portion C, external thyristor bypass segment D, dividing plate E and track pulley F form, on the track pulley F that is loaded on both sides in the housing A for the rectifying part B and the power inverting portion C of drawer type, reach the purpose of fixed support, rectifying part B connects copper bar by direct current and is connected with the power inverting portion C, external thyristor bypass segment D is installed on the outer dividing plate E of housing A, be connected with the power inverting portion C, not only make the unit internal structure compact more, succinctly, safeguard easily, can also be when power cell break down, play the autoelectrinic bypass and do not influence the important function of the normal operation of complete machine.
As shown in Figure 2, be the rectifying part structural representation, described rectifying part B is by plug-in unit 1 of three utmost points of three-phase alternating current input, fast acting fuse 2, rectifier bridge assembly module 3, support capacitor 4, plug-in unit 10 of four utmost points of direct current output, rectifier bridge unit housings 11, rectification unit radiator 12, unit handle 13 and rectification unit copper bar 14 are formed, plug-in unit 1 of three utmost points and plug-in unit 10 of four utmost points are installed in the outside, back of rectifier bridge unit housings 11, two side fast acting fuses 2 in plug-in unit 1 of three utmost points and the rectifier bridge unit housings 11 are connected, plug-in unit of four utmost points 10 is connected with rectifier bridge assembly module 3 by the rectification unit copper bar 14 in the rectifier bridge unit housings 11, below two side fast acting fuses 2 and the rectifier bridge assembly module 3 rectification unit radiators 12 are installed, three support capacitors 4 are connected with rectifier bridge assembly module 3, a support capacitor 4 is installed below rectifier bridge unit housings 11, and unit handle 13 is installed in the front panel of rectifier bridge unit housings 11.Radiator 12 is connected in the unit as negative pole, and the wiring that not only can significantly reduce copper bar connects, and makes the inner brevity and lucidity in unit, simultaneously, also can play the important function of anti-electromagnetic compatibility.Rectification unit copper bar 14 adopts the thick copper plate of 3mm to process, and annealing in process before the processing machines rear surface nickel plating.Adopt this whole copper bar ways of connecting, unit internal connector spare is significantly reduced, also make the inner cabling in unit clear, reach the effect that makes the unit brevity and lucidity.
As shown in Figure 3, be power inverting part-structure schematic diagram, described power inverting portion C is by supporting capacitor group 4, absorption capacitor 5, IGBT module 6, plug-in unit 15 of four utmost points, 10 core secondary plug-in units 16, dc bus copper bar 17, power inverting unit radiator 18, pcb board box 19, power inverting unit housings 20 and unit handle 13 are formed, plug-in unit 15 of four utmost points is installed in the outside, back of power inverting unit housings 20, the inboard, back of power inverting unit housings 20 is provided with 10 core secondary plug-in units 16, power inverting unit radiator 18 is located at a side in the power inverting unit housings 20, be provided with IGBT module 6 and absorption capacitor 5 above, IGBT module 6 is connected with absorption capacitor 5, IGBT module 6 is connected with the rectifier bridge assembly module 3 of rectifying part B by dc bus copper bar 17, unit handle 13 is located at power inverting unit housings 20 front panels, and opposite side is provided with and supports capacitor group 4 and pcb board box 19 in power inverting unit housings 20.The power inverting portion C adopts dc bus copper bar 17 structures, can reduce stray inductance effectively, by the clearance for insulation between the thickness formation positive and negative busbar copper bar of plug-in unit of four utmost points 15 connection dc bus copper bars 17, both make things convenient for installation simultaneously, reached the dielectric voltage withstand requirement again; Between dc bus copper bar 17 and IGBT module 6, use the copper post to be connected, it is identical so just to make IGBT module be clipped to separately the distance of the direct current both positive and negative polarity that connects in 6 minutes, for preventing that dust such as coal ash from entering the gap between the dc bus copper bar 17, utilize teflon coating that encapsulation process has been done at dc bus copper bar 17 edges especially.
The plating zinc on surface PCB box of the complete closed that the power inverting unit is built-in, having guaranteed to place power cell control board in the PCB box to be stuck under the strong electromagnetic that the high switching frequency of power device brought effectively can reliably normally work.
As shown in Figure 4, be external thyristor bypass segment structural representation, described external thyristor bypass segment D is by radio-frequency rector 7, thyristor 8, single phase alternating current (A.C.) output copper bar 9, unit controls power transformer 22, thyristor radiator 23, baffle 24, thyristor trigger board 25 is formed, single phase alternating current (A.C.) output copper bar 9 is connected with thyristor 8 with radio-frequency rector 7, be connected with plug-in unit 15 of four utmost points of power inverting portion C simultaneously, radio-frequency rector 7 one sides are provided with unit controls power transformer 22, be connected with the thyristor trigger board 25 of being located at thyristor 8 one sides, thyristor trigger board 25 is connected by circuit board in the pcb board box 19 in 10 core secondary plug-in units 16 and the power inverting unit housings 20, baffle 24 is located at unit controls power transformer 22 1 sides, radio-frequency rector 7, thyristor 8, unit controls power transformer 22, be provided with thyristor radiator 23 below baffle 24 and the thyristor trigger board 25.
When the external thyristor bypass segment D that is placed in housing A outside starts working, meanwhile because thyristor 8 can produce a large amount of heats, effectively dispel the heat as untimely, will make thyristor 8 temperature rises reach the upper limit and damage, even will influence the normal operation of complete machine.Therefore, use Thyristor Special radiator 23 to address this problem effectively, guarantee that thyristor can normally move when work.
After whole composite type power cell will pass through the rectification of rectified power unit from the three-phase alternating current input of phase shifting transformer, and support through polarity free capacitor filtering, again through H bridge inverter output single phase alternating current (A.C.), with other combined power units in series of homophase, this combined power unit output current can reach 1200A at present.
Claims (4)
1. high-power high voltage frequency conversion composite type power cell, it is characterized in that, form by housing (A), rectifying part (B), power inverting part (C), external thyristor bypass segment (D), dividing plate (E) and track pulley (F), for the rectifying part (B) of drawer type and power inverting part (C) place on the track pulley (F) of the interior both sides of housing (A), rectifying part (B) connects copper bar and power inverting part (C) by direct current, external thyristor bypass segment (D) places on the outer dividing plate (E) of housing (A), is connected with power inverting part (C).
2. high-power high voltage frequency conversion composite type power cell according to claim 1, it is characterized in that, described rectifying part (B) is by plug-in units of three utmost points (1) of three-phase alternating current input, fast acting fuse (2), rectifier bridge assembly module (3), support capacitor (4), plug-in units of four utmost points (10) of direct current output, rectifier bridge unit housings (11), rectification unit radiator (12), unit handle (13) and rectification unit copper bar (14) are formed, plug-in units of three utmost points (1) and plug-in units of four utmost points (10) are located at the outside, back of rectifier bridge unit housings (11), two side fast acting fuses (2) in plug-in units of three utmost points (1) and the rectifier bridge unit housings (11) are connected, plug-in units of four utmost points (10) are connected with rectifier bridge assembly module (3) by the rectification unit copper bar (14) in the rectifier bridge unit housings (11), be provided with rectification unit radiator (12) below two side fast acting fuses (2) and the rectifier bridge assembly module (3), three support capacitors (4) are connected with rectifier bridge assembly module (3), be provided with a support capacitor (4) below rectifier bridge unit housings (11), unit handle (13) is located at the front panel of rectifier bridge unit housings (11).
3. high-power high voltage frequency conversion composite type power cell according to claim 1, it is characterized in that, described power inverting part (C) is by supporting capacitor group (4), absorption capacitor (5), IGBT module (6), plug-in units of four utmost points (15), 10 core secondary plug-in units (16), dc bus copper bar (17), power inverting unit radiator (18), pcb board box (19), power inverting unit housings (20), unit handle (13) is formed, plug-in units of four utmost points (15) are located at the outside, back of power inverting unit housings (20), the inboard, back of power inverting unit housings (20) is provided with 10 core secondary plug-in units (16), power inverting unit radiator (18) is located at a side in the power inverting unit housings (20), be provided with IGBT module (6) and absorption capacitor (5) above, IGBT module (6) is connected with absorption capacitor (5), IGBT module (6) is connected with the rectifier bridge assembly module (3) of rectifying part (B) by dc bus copper bar (17), unit handle (13) is located at power inverting unit housings (20) front panel, and opposite side is provided with and supports capacitor group (4) and pcb board box (19) in power inverting unit housings (20).
4. high-power high voltage frequency conversion composite type power cell according to claim 1, it is characterized in that, described external thyristor bypass segment (D) is by radio-frequency rector (7), thyristor (8), single phase alternating current (A.C.) output copper bar (9), unit controls power transformer (22), thyristor radiator (23), baffle (24), thyristor trigger board (25) is formed, single phase alternating current (A.C.) output copper bar (9) is connected with thyristor (8) with radio-frequency rector (7), plug-in units of four utmost points (15) with power inverting part (C) are connected simultaneously, radio-frequency rector (7) one sides are provided with unit controls power transformer (22), be connected with the thyristor trigger board of being located at thyristor (8) one sides (25), thyristor trigger board (25) is connected with the middle circuit board of the pcb board box (19) in the power inverting unit housings (20) by 10 core secondary plug-in units (16), baffle (24) is located at unit controls power transformer (22) one sides, radio-frequency rector (7), thyristor (8), unit controls power transformer (22), be provided with thyristor radiator (23) below baffle (24) and the thyristor trigger board (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200707361U CN201113775Y (en) | 2007-06-07 | 2007-06-07 | Large power high voltage frequency conversion combination type power unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200707361U CN201113775Y (en) | 2007-06-07 | 2007-06-07 | Large power high voltage frequency conversion combination type power unit |
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| Publication Number | Publication Date |
|---|---|
| CN201113775Y true CN201113775Y (en) | 2008-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200707361U Expired - Lifetime CN201113775Y (en) | 2007-06-07 | 2007-06-07 | Large power high voltage frequency conversion combination type power unit |
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|---|---|
| CN (1) | CN201113775Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102044982A (en) * | 2011-01-28 | 2011-05-04 | 株洲南车时代电气股份有限公司 | Modularization thyristor rectifying unit |
| CN103166478A (en) * | 2013-03-07 | 2013-06-19 | 上海交通大学 | High voltage integration gate pole reversing thyristor five-level power cabinet |
| CN103236778A (en) * | 2013-04-22 | 2013-08-07 | 五力机电科技（昆山）有限公司 | Modularized combined power supply device |
| CN104135153A (en) * | 2014-07-22 | 2014-11-05 | 四川升华电源科技有限公司 | DC-DC module power supply |
| CN111790974A (en) * | 2019-04-04 | 2020-10-20 | 罗伯特·博世有限公司 | Rectifier for a welding transformer of a welding system and method for producing such a rectifier |
| CN112119579A (en) * | 2018-05-14 | 2020-12-22 | 三菱电机株式会社 | Power conversion device |
-
2007
- 2007-06-07 CN CNU2007200707361U patent/CN201113775Y/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102044982A (en) * | 2011-01-28 | 2011-05-04 | 株洲南车时代电气股份有限公司 | Modularization thyristor rectifying unit |
| CN102044982B (en) * | 2011-01-28 | 2013-10-23 | 株洲南车时代电气股份有限公司 | Modularization thyristor rectifying unit |
| CN103166478A (en) * | 2013-03-07 | 2013-06-19 | 上海交通大学 | High voltage integration gate pole reversing thyristor five-level power cabinet |
| CN103166478B (en) * | 2013-03-07 | 2016-02-10 | 上海交通大学 | A kind of high-tension integral gate change transistor five level power cabinet |
| CN103236778A (en) * | 2013-04-22 | 2013-08-07 | 五力机电科技（昆山）有限公司 | Modularized combined power supply device |
| CN103236778B (en) * | 2013-04-22 | 2015-01-21 | 五力机电科技（昆山）有限公司 | Modularized combined power supply device |
| CN104135153A (en) * | 2014-07-22 | 2014-11-05 | 四川升华电源科技有限公司 | DC-DC module power supply |
| CN104135153B (en) * | 2014-07-22 | 2015-07-22 | 杨燕平 | DC-DC module power supply |
| CN112119579A (en) * | 2018-05-14 | 2020-12-22 | 三菱电机株式会社 | Power conversion device |
| CN112119579B (en) * | 2018-05-14 | 2024-04-02 | 三菱电机株式会社 | Power conversion device |
| CN111790974A (en) * | 2019-04-04 | 2020-10-20 | 罗伯特·博世有限公司 | Rectifier for a welding transformer of a welding system and method for producing such a rectifier |
| CN111790974B (en) * | 2019-04-04 | 2023-09-19 | 罗伯特·博世有限公司 | Rectifier for a welding transformer of a welding device and method for producing such a rectifier |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080910 |