CN103078471B - Power module and current converter - Google Patents
Power module and current converter Download PDFInfo
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- CN103078471B CN103078471B CN201110330531.3A CN201110330531A CN103078471B CN 103078471 B CN103078471 B CN 103078471B CN 201110330531 A CN201110330531 A CN 201110330531A CN 103078471 B CN103078471 B CN 103078471B
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Abstract
The invention discloses a power module and a current converter. The power module comprises a flat plate type radiator on which a plurality of groups of power units are arranged side by side, each power unit comprises an IGBT (Insulated Gate Bipolar Transistor), a driving circuit board, complex busbars, a surge capacitor and an alternating outgoing line copper bar, wherein the IGBT is arranged on the surface of the flat plate type radiator; the driving circuit board is arranged on the IGBT and electrically connected with the IGBT; the complex busbars are arranged on the IGBT and the driving circuit board and consist of a direct current positive copper bar and a direct current negative copper bar which are respectively connected with the IGBT electrically; the surge capacitor is arranged on the complex busbars and electrically connected with the direct current positive copper bar and the direct current negative copper bar on the complex busbars; the alternating current outgoing line copper bar is arranged on the complex busbars and connected with the IGBT electrically; the complex busbars in all power units have an integrated structure. According to the technical scheme, the power module and the current converter are simple in structure, and convenient to realize, and the size of the power module can be effectively reduced.
Description
Technical field
The present invention relates to electronic technology, particularly relate to a kind of power model and current transformer.
Background technology
In railcar, the power of traction convertor is larger, its order of magnitude can reach 1MW, wherein, as the core component in current transformer, each piece volumes in power model is larger, and there is larger heat radiation power, meanwhile, along with the development of technology, also more and more higher to the requirement of power model volume, therefore, while guaranteeing power model electric property, the volume how effectively reducing power model becomes extremely important.
Wherein, power model is with insulated gate bipolar transistor (Insulated Gate BipolarTransistor, IGBT) be the power component of core, as the power component of inverter or chopper in current transformer, it mainly comprises: be the main function components in current transformer, plays the effect of inverter or chopper.In prior art, for realizing efficiently radiates heat, power model adopts water-cooling structure usually, the power model of this kind of structure cools IGBT by water-cooling pattern, but, in the power model of this kind of structure, need to arrange separately the optional feature such as water pipe, water pump being used for cooling effect, make the height of power model and volume comparatively large, the occasion higher to volume requirement cannot be applicable to; In addition, in prior art, each power model is individually arranged, and namely each power model only comprises one group of power component, when this can make each power model be assembled in the case of current transformer, height and volume excessive.In addition, also have the power model adopting traveling air-cooled structure in prior art, this kind of power model exists highly higher equally, and power model is arrange separately the problem causing current transformer overall volume excessive.
To sum up, in the power model of existing employing water-cooling structure or traveling air-cooled structure, make to use the height of this kind of power model current transformer higher, volume is comparatively large, is not suitable for being applied in the current transformer required compared with low height and volume.
Summary of the invention
The invention provides a kind of power model and current transformer, effectively can overcome prior art existing problems, reduce volume and the height of power model.
The invention provides a kind of power model, comprise flat-plate radiator, described flat-plate radiator has been arranged side by side and has organized power cell more, described power cell comprises:
Insulated gate bipolar transistor IGBT, is arranged on the surface of described flat-plate radiator;
Drive circuit board, is arranged on described IGBT, and is electrically connected with described IGBT;
Composite bus bar, is arranged on described IGBT and drive circuit board, and described composite bus bar comprises the positive copper bar of direct current and direct current bears copper bar, and described direct current bears copper bar and the positive copper bar of direct current is electrically connected with described IGBT respectively;
Surging electric capacity, is arranged on described composite bus bar, bears copper bar and the positive copper bar of direct current is electrically connected with the direct current on described composite bus bar;
Exchange outlet copper bar, be arranged on described composite bus bar, be electrically connected with described IGBT;
Composite bus bar in each power cell is structure as a whole.
In above-mentioned power model, the quantity of described surging electric capacity is at least 2.Particularly, the quantity of described surging electric capacity is 15.
In above-mentioned power model, the two ends of described interchange outlet copper bar are respectively arranged with binding post, and described binding post is installed on described flat-plate radiator, and described binding post is electrically connected with the described outlet copper bar that exchanges.And described interchange outlet copper bar is set on described binding post.
In above-mentioned power model, described flat-plate radiator is also provided with electric capacity bracing frame, described electric capacity bracing frame is provided with Support Capacitor, the input of described Support Capacitor is electrically connected with the main circuit on current transformer respectively.
In above-mentioned power model, the positive copper bar of described direct current and direct current are born copper bar and are electrically connected with the output of described Support Capacitor respectively.
Above-mentioned power model also can comprise:
Power supply distributor plate, described power supply distributor plate has an input and multiple output, for the DC power supply inputted by input in the external world, is connected on each drive circuit board respectively by multiple output.
In above-mentioned power model, described power cell is 3 groups, for the power component as inverter in current transformer;
Or described power cell is 4 groups, wherein any three groups of power components as inverter in current transformer, another group is as the power component of chopper in current transformer.
The present invention also provides a kind of current transformer, comprises main circuit and power model, wherein, and the power model that described power model provides for adopting the invention described above.
Power model provided by the invention and current transformer, by adopting flat-plate radiator, flat-plate radiator is arranged and organizes power cell more, IGBT in each power cell and surging electric capacity are electrically connected by the composite bus bar arranged, make whole power module architectures compact, height and volume all less, can be applicable to having in the application compared with low height and volume requirement; Simultaneously, by multiple power model is integrated, the assembling of each power cell can be convenient to, improve the convenience of power model assembling, avoid each power cell to arrange separately and the larger problem of the power model overall volume that causes, be applicable in the current transformer application had compared with low height and volume requirement.
Accompanying drawing explanation
The structural representation of the power model that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 is the structural representation being only provided with IGBT, binding post and drive circuit board in the embodiment of the present invention on flat-plate radiator;
Fig. 3 is provided with composite bus bar, surging electric capacity and the structural representation exchanging outlet copper bar on Fig. 2 basis;
Fig. 4 is the structural representation being provided with electric capacity bracing frame on Fig. 3 basis;
Fig. 5 is the structural representation being provided with Support Capacitor and power supply distributor plate on Fig. 4 basis.
Embodiment
The structural representation of the power model that Fig. 1 provides for the embodiment of the present invention.As shown in Figure 1, the present embodiment power model comprises flat-plate radiator 1, and flat-plate radiator 1 is provided with many group power cells 2, each power cell 2 includes IGBT 21, drive circuit board 22, composite bus bar 23, surging electric capacity 24 and exchanges outlet copper bar 25.Wherein, IGBT 21 is directly installed on the surface of flat-plate radiator 1, and drive circuit board 22 is arranged on IGBT 21, and is electrically connected with IGBT 21; Composite bus bar 23 is arranged on IGBT 21 and drive circuit board 22, and composite bus bar 23 comprises the positive copper bar 231 of direct current and direct current bears copper bar 232, and direct current bears copper bar 232 and the positive copper bar 231 of direct current is electrically connected with IGBT 21 respectively; Surging electric capacity 24 is arranged on composite bus bar 23, and bears copper bar 231 with the direct current on composite bus bar 23 and the positive copper bar 232 of direct current is electrically connected; Exchange outlet copper bar 25 to be arranged on composite bus bar 23, and be electrically connected with IGBT 21; Composite bus bar 23 in each power cell 2 is structure as a whole, and the surging electric capacity in each power cell 2, IGBT can be electrically connected with the composite bus bar of this integrative-structure respectively.The each power cell of the present embodiment power model is disposed side by side on flat-plate radiator, each power cell structure is simple, compact, the height of whole power model and volume are all less, each power component in current transformer can be concentrated in together, effectively can reduce volume and the height of whole current transformer, meet current transformer in the application scenario compared with low height and volume requirement.
In the present embodiment, on flat-plate radiator 1, be arranged side by side four groups of power cells 2, wherein any three groups of power cells 2 can be connected with main circuit of converter, using the power component as the inverter on main circuit, as the circuit in inverter; And other one group of power cell 2 can be used as the power component of chopper in current transformer, using as the circuit in chopper.In practical application, the power cell of suitable quantity can be set as required, to be integrated by power component each in current transformer, effectively can improve the compactedness of power component structure, reduce the volume that power component takies, effectively can reduce overall volume and the height of current transformer.
In the present embodiment, power cell 2 can include 2 IGBT 21, and each IGBT 21 is all provided with drive circuit board 22, wherein, drive circuit board 22 is mainly used to the work of control IGBT 21, be connected with the control circuit in current transformer, drive circuit board 22 is specifically fixed on IGBT 21 by bolt, and drive circuit board 22 to be set up with IGBT 21 by bolt and is electrically connected.
In the present embodiment, composite bus bar 23 is that the positive copper bar 231 of direct current and direct current are born copper bar 232 and made by the form of press mold of insulating, direct current for being come by main circuit is connected to each IGBT 21 and surging electric capacity 24 by composite bus bar, it will be appreciated by those skilled in the art that, the connection projection of composite bus bar 23 by it is arranged, splicing ear corresponding on IGBT and surging electric capacity respectively coordinates, and realizes electrical connection.IGBT and surging electric capacity is connected by adopting composite bus bar, effectively can increase the current capacity of whole power model, reduce stray inductance, the positive copper bar of direct current and direct current can be made to bear between copper bar simultaneously and produce capacity effect, conveniently superpotential absorption is turned off to IGBT, improve the electric property of whole power model.
In the present embodiment, the quantity of the surging electric capacity arranged in each power cell 2 is at least 2, for the pulse signal suppressed in circuit, particularly, in the present embodiment, is provided with 5 surging electric capacity in each power cell 2.In practical application, according to the circuit needs of power model, the surging electric capacity of suitable quantity can be set, to process the pulse signal produced in circuit, eliminate the impact of pulse signal.
In the present embodiment, for ease of alternating current is exported, binding post 26 is also respectively arranged with at the two ends exchanging outlet copper bar 25, binding post 26 is installed on flat-plate radiator 1, and binding post 26 with exchange outlet copper bar 25 and be electrically connected, like this, the alternating current that whole circuit can be produced is exported by binding post 26.
In the present embodiment, as shown in Figure 1, flat-plate radiator 1 also can be provided with electric capacity bracing frame 27, this electric capacity bracing frame 27 can be provided with Support Capacitor 28, the input of Support Capacitor 28 is used for being electrically connected with the main circuit in current transformer, and output is born copper bar 232 with the positive copper bar 231 of the direct current in composite bus bar 23 and direct current and is electrically connected respectively.Wherein, Support Capacitor 28 is mainly used in storing the direct current in active circuits, to be input to each IGBT by composite bus bar, by converting direct-current power into alternating-current power.Because the volume and weight of Support Capacitor 28 is comparatively large, by arranging electric capacity bracing frame 27, can effectively Support Capacitor be integrated on power model, makes power model compact.
In the present embodiment, because each drive circuit board all needs to connect the DC power supply in current transformer, for ease of providing DC power supply for the drive circuit board in each power model, also can be provided with power supply distributor plate, thus by power supply distributor plate for each drive circuit board provides DC power supply, wherein, this power supply distributor plate can have an input and multiple output, input is used for being connected with the DC power supply in extraneous control circuit, and output is for being connected with the power input on drive circuit board.Particularly, in the present embodiment, in four groups of power cells, have 8 IGBT 21 and drive circuit board 22, and each drive circuit board 22 all needs DC power supply, therefore, 2 power supply distributor plates 29 are adopted in the present embodiment, each power supply distributor plate 29 can have an input 291 and four outputs 292, like this, two block power supply distributor plates can be utilized to be connected by wire with the power input of 8 drive circuit boards respectively, the direct current be convenient to the external world inputs is connected respectively on each drive circuit board, meanwhile, the problem of connecting line confusion when wire can be avoided to connect.
In the present embodiment, each radiating fin of above-mentioned flat-plate radiator 1 can be provided with projection, to improve the area of dissipation of radiator, increase windage, make whole radiator can have good heat dispersion.In addition, for ease of the installation and removal of power model in current transformer, radiator base plate surrounding size can be arranged and be greater than the size of radiating fin, except carrying out except the edge of radiator base plate can be utilized installing and seal, the edge of substrate also can be utilized to carry out the carrying of power model.Because power model volume is larger, and under current transformer is normally lifted on the car of vehicle, when power model mounts and dismounts, only undertaken by side, by the substrate surrounding of radiator is arranged large-size, thus the aid such as jack, fork truck can be utilized to operate in substrate surrounding, be convenient to the carrying in power model being dismantled and installing.
For ease of better understanding technical solution of the present invention, below the concrete assembling process of the embodiment of the present invention is described.
Fig. 2 is the structural representation being only provided with IGBT, binding post and drive circuit board in the embodiment of the present invention on flat-plate radiator; Fig. 3 is provided with composite bus bar, surging electric capacity and the structural representation exchanging outlet copper bar on Fig. 2 basis; Fig. 4 is the structural representation being provided with electric capacity bracing frame on Fig. 3 basis; Fig. 5 is the structural representation being provided with Support Capacitor and power supply distributor plate on Fig. 4 basis.During the assembling of the present embodiment power model, its assembling process can comprise the following steps:
Step 101, each IGBT 21 is arranged on the surface of flat-plate radiator 1 by the arrangement mode order of design, simultaneously, install binding post 26 respectively in the both sides of a power cell, and be arranged on IGBT 21 by drive circuit board 22, the structure after assembling as shown in Figure 2.
Wherein, IGBT 21 and binding post 26 all can adopt bolt to be fixedly mounted on flat-plate radiator 1, to improve the stability and fastness of installing, scribbling heat-conducting silicone grease between the contact-making surface of IGBT 21 and radiator 1, is the effect that the IGBT 21 in work dispels the heat to realize radiator 1; Drive circuit board 22 is also fixedly mounted on IGBT 21 by bolt, meanwhile, utilizes this bolt as the conductor be electrically connected between drive circuit board 22 with IGBT 21.
Step 102,15 surging electric capacity 24 are arranged on composite bus bar 23, on the basis of Fig. 2, composite bus bar 23 is arranged on IGBT 21, after composite bus bar 23 is installed, can interchange outlet copper bar 25 be pressed on composite bus bar 23, two ends are enclosed within binding post 26, and the structure after assembling as shown in Figure 3.
Wherein, composite bus bar 23 is provided with the projection carrying out with surging electric capacity 24, IGBT 21 being electrically connected, thus those projections can be utilized to set up and surging electric capacity 24, electrical connection between IGBT 21, wherein composite bus bar is in manufacturing process, corresponding projection can be previously provided with according to installation site, to coordinate with the part to be connected in each parts, set up the electrical connection with each parts.Similar, exchanging outlet copper bar is also be electrically connected with IGBT by the projection of setting, and end is electrically connected with binding post.It will be understood by those skilled in the art that composite bus bar and exchange on outlet copper bar except the position be electrically connected with other parts, other parts are all electric insulations.
Step 103, on the basis of Fig. 3, can install electric capacity bracing frame 27 on flat-plate radiator 1, this electric capacity bracing frame 27 is on other parts, so that install Support Capacitor 28, the structure after assembling as shown in Figure 4.
Step 104, on the basis of Fig. 3, to be partly interposed in by the input and output terminal of Support Capacitor 28 on composite bus bar 23 in reserved hole, and to be arranged on electric capacity bracing frame 27, the structure after assembling as shown in Figure 5.
After the assembling of the present embodiment power model, can utilize fork truck, jack etc. that its level is put into the converter box of vehicle, realize the integral installation of power model.
It will be understood by those skilled in the art that, above-mentionedly mainly the setting of parts each in power model in the present embodiment and assembling mode to be described, in each power model each parts electrical connection and can be identical or similar with current transformer of the prior art with the annexation in current transformer between main circuit and control circuit, do not repeat them here.
To sum up, the power model that the present embodiment provides, by adopting flat-plate radiator, flat-plate radiator is arranged and organizes power cell more, IGBT in each power cell and surging electric capacity are electrically connected by the composite bus bar arranged, make whole power module architectures compact, height and volume all less, can be applicable to having in the application compared with low height and volume requirement; Simultaneously, by multiple power cell is integrated, the assembling of each power cell can be convenient to, improve the convenience of power model assembling, avoid each power cell to arrange separately and the larger problem of the power model overall volume that causes, be applicable in the current transformer application had compared with low height and volume requirement.
In addition, the embodiment of the present invention also provides a kind of current transformer, and this current transformer comprises main circuit and power model, the power model that this power model provides for adopting the invention described above embodiment, and its concrete structure does not repeat them here.
In the present embodiment, current transformer belongs to traction convertor, its main circuit can realize three-phase inversion and control, and the direct current (750VDC or 1500VDC) of contact line is transformed into the three-phase alternating current of adjustable voltage and frequency, is used for controlling the work such as the traction of traction electric machine and braking.Power model is the product realizing core circuit function in main circuit, is its core devices with IGBT, belongs to the inverter bridge part in main circuit.What deserves to be explained is, this power is 4 general phase bridge arm structures, can not only be used for the inverter of this current transformer, also may be used for rectifier, can realize IGBT in case of need in parallel to increase output current.The core mainly TCU (traction control unit) of control circuit, TCU sends control command after calculating, and the drive plate pwm signal issued on power model, drive plate triggers the control end of IGBT after this control signal being amplified, thus control IGBT realizes main circuit carries out pwm pulse copped wave work according to certain sequential, to complete the work under the different operating mode of current transformer.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (9)
1. a power model, is characterized in that, comprises flat-plate radiator, and flat-plate radiator substrate surrounding size is greater than the size of radiating fin; Each radiating fin of flat-plate radiator is provided with projection; Described flat-plate radiator has been arranged side by side and has organized power cell more, described power cell comprises:
Insulated gate bipolar transistor IGBT, is arranged on the surface of described flat-plate radiator;
Drive circuit board, is arranged on described IGBT, and is electrically connected with described IGBT;
Composite bus bar, is arranged on described IGBT and drive circuit board, and described composite bus bar comprises the positive copper bar of direct current and direct current bears copper bar, and described direct current bears copper bar and the positive copper bar of direct current is electrically connected with described IGBT respectively;
Surging electric capacity, is arranged on described composite bus bar, bears copper bar and the positive copper bar of direct current is electrically connected with the direct current on described composite bus bar;
Exchange outlet copper bar, be arranged on described composite bus bar, be electrically connected with described IGBT;
Composite bus bar in each power cell is structure as a whole;
Described flat-plate radiator is also provided with electric capacity bracing frame, described electric capacity bracing frame is provided with Support Capacitor, the input of described Support Capacitor is electrically connected with the main circuit on current transformer respectively.
2. power model according to claim 1, is characterized in that, the quantity of described surging electric capacity is at least 2.
3. power model according to claim 2, is characterized in that, the quantity of described surging electric capacity is 15.
4. power model according to claim 1, is characterized in that, the two ends of described interchange outlet copper bar are respectively arranged with binding post, and described binding post is installed on described flat-plate radiator, and described binding post is electrically connected with the described outlet copper bar that exchanges.
5. power model according to claim 4, is characterized in that, described interchange outlet copper bar is set on described binding post.
6. power model according to claim 1, is characterized in that, the positive copper bar of described direct current and direct current are born copper bar and be electrically connected with the output of described Support Capacitor respectively.
7. power model according to claim 6, is characterized in that, also comprises:
Power supply distributor plate, described power supply distributor plate has an input and multiple output, is connected to each drive circuit board for the DC power supply inputted by input in the external world respectively by multiple output.
8. power model according to claim 1, is characterized in that, described power cell is 3 groups, for the power component as inverter in current transformer;
Or described power cell is 4 groups, wherein any three groups of power components as inverter in current transformer, another group is as the power component of chopper in current transformer.
9. a current transformer, comprises main circuit and power model, it is characterized in that, described power model is adopt the arbitrary described power model of claim 1 ~ 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110330531.3A CN103078471B (en) | 2011-10-26 | 2011-10-26 | Power module and current converter |
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| CN201110330531.3A CN103078471B (en) | 2011-10-26 | 2011-10-26 | Power module and current converter |
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| CN103078471A CN103078471A (en) | 2013-05-01 |
| CN103078471B true CN103078471B (en) | 2015-05-13 |
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| CN201110330531.3A Active CN103078471B (en) | 2011-10-26 | 2011-10-26 | Power module and current converter |
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| CN103401437A (en) * | 2013-08-12 | 2013-11-20 | 南车株洲电力机车研究所有限公司 | IGBT converter chopping module |
| CN104617784B (en) * | 2015-01-12 | 2017-07-07 | 株洲南车时代电气股份有限公司 | A kind of inversion module |
| CN105471225A (en) * | 2015-12-25 | 2016-04-06 | 大连尚能科技发展有限公司 | Highly integrated converter power module |
| CN107293495B (en) * | 2016-03-31 | 2019-07-02 | 株洲中车时代电气股份有限公司 | A kind of power module and its manufacturing method |
| CN106099574B (en) * | 2016-08-16 | 2018-05-04 | 中车永济电机有限公司 | Subway permanent magnetism draws inversion chopped power module composite bus bar |
| CN106452097B (en) * | 2016-08-30 | 2018-11-30 | 中车大连电力牵引研发中心有限公司 | traction power module |
| CN106329955B (en) * | 2016-10-25 | 2018-08-21 | 中车永济电机有限公司 | High integration metro traction chopped power module |
| CN108123599B (en) * | 2016-11-29 | 2020-05-12 | 中车株洲电力机车研究所有限公司 | Chopping module of converter |
| CN108233725A (en) * | 2016-12-09 | 2018-06-29 | 中车永济电机有限公司 | Traction power module |
| CN106992692A (en) * | 2017-05-17 | 2017-07-28 | 中车永济电机有限公司 | Permanent magnetism trailer system current transformer |
| CN107294400B (en) * | 2017-07-16 | 2019-04-05 | 中车永济电机有限公司 | Traction converter plant based on high compatible power unit |
| CN107769587A (en) * | 2017-11-22 | 2018-03-06 | 中车大连电力牵引研发中心有限公司 | A kind of light rail auxiliary power module and light rail AuCT |
| CN110365277A (en) * | 2018-03-26 | 2019-10-22 | 长城汽车股份有限公司 | Electric machine controller and vehicle |
| CN108711916A (en) * | 2018-06-27 | 2018-10-26 | 友邦电气（平湖）股份有限公司 | 90KW to 120KW charging piles direct current output module |
| CN111106105A (en) * | 2018-10-25 | 2020-05-05 | 株洲中车时代电气股份有限公司 | System-on-chip based on IGBT |
| CN109887908A (en) * | 2019-03-01 | 2019-06-14 | 深圳市慧成功率电子有限公司 | A kind of power modules with power bus |
| CN109920771A (en) * | 2019-03-01 | 2019-06-21 | 深圳市慧成功率电子有限公司 | A kind of power module with power bus |
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| CN112737284A (en) * | 2020-12-25 | 2021-04-30 | 中车永济电机有限公司 | Impact-resistant auxiliary buck chopping power module |
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