CN204271885U - A kind of three level high power combination formula power cell and explosion-proof frequency converter - Google Patents
A kind of three level high power combination formula power cell and explosion-proof frequency converter Download PDFInfo
- Publication number
- CN204271885U CN204271885U CN201420757957.6U CN201420757957U CN204271885U CN 204271885 U CN204271885 U CN 204271885U CN 201420757957 U CN201420757957 U CN 201420757957U CN 204271885 U CN204271885 U CN 204271885U
- Authority
- CN
- China
- Prior art keywords
- power
- backboard
- combination formula
- phase power
- level high
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Inverter Devices (AREA)
Abstract
This application discloses a kind of three level high power combination formula power cell, comprising: be arranged on three radiators in backboard one side; Be arranged on three single-phase power modules on backboard another side; Backboard offers three holes, three single-phase power modules embed respectively three Kong Yusan radiators one by one thermo-contact connect; Be arranged on the control module for control three single-phase power modules of three single-phase power modules on one of them.Visible, the explosion-proof frequency converter applying this three level high power combination formula power cell adopts three level conversion regime to carry out level conversion, compared to two traditional level type explosion-proof frequency converters, harmonic wave is low, output waveform closer to sinusoidal wave, peak voltage is low, power device loss is low, improves stability and the reliability of system.Also solve the heat dissipation problem of the high-power power cell of three level and explosion-proof frequency converter, such that the high-power power cell structure of three level of the present utility model is compact, volume is little.
Description
Technical field
The application relates to mining equipment technical field, more particularly, relates to a kind of three level high power combination formula power cell and explosion-proof frequency converter.
Background technology
Along with the raising of coal production ability, more and more higher to the power requirement of the supporting explosion-proof frequency converter of mining main equipment, high-power middle pressure explosion-proof frequency converter has wide market prospects in coal mining, but its because voltage is high, system complex, design and develop the problem that difficulty is high, cost is also higher, be difficult to be used widely.
Usually two level type explosion-proof frequency converter equipment are adopted both at home and abroad at present, but the power output of explosion-proof frequency converter equipment is lower during two level, be difficult to meet consumers' demand, and two the harmonic wave of level explosion-proof frequency converter equipment comparatively large, output voltage rate of change (du/dt) is high, and motor side spike is high, two level output common mode voltages are high, motor shaft electric current is large, easily damages motor bearings, thus makes the stability of explosion-proof frequency converter equipment, reliability poor.
Therefore, on the basis of two level type explosion-proof frequency converters, three level formula explosion-proof frequency converter is also proposed in prior art, but, the power of this three level power explosion-proof frequency converter does larger, will there is the problem that caloric value is large, radiating effect is poor, and installation volume is comparatively large, is not suitable for the installing space that underground coal mine is limited.
Therefore, how to improve the problem that stability and radiating effect are poor, installation volume is larger of explosion-proof frequency converter equipment, become one of those skilled in the art's technical problem urgently to be resolved hurrily.
Utility model content
In view of this, the application provides a kind of three level high power combination formula power cell and explosion-proof frequency converter, for solving the poor problem of two level type high-power explosion-proof frequency converter equipment stability in prior art, reliability.
To achieve these goals, the existing scheme proposed is as follows:
A kind of three level high power combination formula power cell, comprising:
Backboard;
Be arranged on three radiators on backboard the same face;
Single-phase power module that be arranged on three same structures on backboard another side, that connected by DC bus;
Described backboard offers three holes, described three single-phase power modules embed respectively described three holes and described three radiators one by one thermo-contact connect;
Be arranged on the control module for control described three single-phase power modules of described three single-phase power modules on one of them.
Preferably, in above-mentioned three level high power combination formula power cell, the capacitive stack copper bar of described three single-phase power modules connects copper bar by first and is connected successively, and the power model lamination copper bar of described three single-phase power modules connects copper bar by second and is connected successively.
Preferably, in above-mentioned three level high power combination formula power cell, described three single-phase power modules and three radiators are in one line is respectively arranged on described backboard.
Preferably, in above-mentioned three level high power combination formula power cell, comprising:
With described three radiators one_to_one corresponding, three blower fans be arranged on described backboard respectively.
Preferably, in above-mentioned three level high power combination formula power cell, described radiator is heat-pipe radiator, aluminum profile heat radiator or cooled plate radiator.
Preferably, in above-mentioned three level high power combination formula power cell, the bottom of described single-phase power module is provided with aluminium sheet, and the power device of described single-phase power module is mounted on described aluminium sheet, and described aluminium sheet is mounted on the substrate of radiator.
Preferably, in above-mentioned three level high power combination formula power cell, comprising:
Be arranged on described single-phase power module top, for carrying out the exhausting heat radiation assembly of exhausting to single-phase power module internal.
Preferably, in above-mentioned three level high power combination formula power cell, described exhausting heat radiation assembly is arranged on the side at described single-phase power module top, and described control module is arranged on the opposite side at described single-phase power module top.
A kind of explosion-proof frequency converter, comprising: the inverter of electrical connection and rectifying device, wherein, described inverter and rectifying device include the three level high power combination formula power cell described in above-mentioned any one.
Preferably, in above-mentioned explosion-proof frequency converter, the backboard in described inverter is an integral type backboard, and the backboard in described rectifying device is an integral type backboard, and namely the backboard in inverter and the backboard in rectifying device are two pieces of backboards independent of each other.
As can be seen from above-mentioned technical scheme, disclosed in application the above embodiments of the present application, the explosion-proof frequency converter of three level high power combination formula power cell adopts three level conversion regime to carry out level conversion, compared to two traditional level type explosion-proof frequency converters, harmonic wave is low, output waveform is closer to sine wave, peak voltage is low, and power device loss step-down, thus improve stability and the reliability of system, described radiator and single-phase power module set-up mode one to one, also the heat dissipation problem of the high-power power cell of three level and explosion-proof frequency converter is solved, make the high-power power cell structure of three level of the present utility model compact, volume is little.In addition, namely described power cell is applicable to rectifying device, is also applicable to inverter, and versatility is good, and three single-phase power modular structures are identical, and convenient for maintaining is changed.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
The front view of Fig. 1 a kind of three level high power combination formula power cell disclosed in the embodiment of the present application;
The dorsal view of Fig. 2 three level high power combination formula power cell disclosed in the embodiment of the present application;
The end view of Fig. 3 three level high power combination formula power cell disclosed in the embodiment of the present application;
The structural representation of Fig. 4 single-phase power module disclosed in the embodiment of the present application;
The circuit topological structure figure of Fig. 5 single-phase power module disclosed in the embodiment of the present application;
The structure chart of Fig. 6 a kind of explosion-proof frequency converter disclosed in the embodiment of the present application;
The circuit structure diagram of Fig. 7 explosion-proof frequency converter disclosed in the embodiment of the present application.
Embodiment
To be directed in prior art and usually to adopt two level type explosion-proof frequency converter equipment both at home and abroad at present and cause the stability of explosion-proof frequency converter equipment and the poor problem of reliability, this application discloses a kind of three level high power combination formula power cell and explosion-proof frequency converter.
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
See Fig. 1 to Fig. 4, the embodiment of the present application discloses a kind of three level high power combination formula power cell, and this three level high power combination formula power cell can be applicable to, in explosion-proof frequency converter, comprising:
Backboard 4;
Be arranged on three radiators 5 on backboard 4 the same face;
Single-phase power module 1 that be arranged on three same structures on backboard 4 another side, that connected by DC bus 3;
Described backboard 4 offers three holes, described three single-phase power modules 1 embed respectively described three holes and described three radiators 5 one by one thermo-contact connect;
Be arranged on the control module (not shown) for control described three single-phase power modules 1 of described three single-phase power modules 1 on one of them.
See three level high power combination formula power cell disclosed in the above embodiments of the present application, there is the single-phase power module that three structures are identical, disclosed in application the above embodiments of the present application, the explosion-proof frequency converter of three level high power combination formula power cell adopts three level conversion regime to carry out level conversion, compared to two traditional level type explosion-proof frequency converters, harmonic wave is low, output waveform is closer to sine wave, peak voltage is low, and power device loss step-down, thus improve stability and the reliability of system, described radiator and single-phase power module set-up mode one to one, also the heat dissipation problem of the high-power power cell of three level and explosion-proof frequency converter is solved, make the high-power power cell structure of three level of the present utility model compact, volume is little.In addition, namely described power cell is applicable to rectifying device, is also applicable to inverter, and versatility is good, and three single-phase power modular structures are identical, and convenient for maintaining is changed.
In the embodiment of the present application, in order to make the impedance reduction between single-phase power module 1, commutation time shortens, the capacitive stack copper bar of described three single-phase power modules connects copper bar by first and is connected successively, and the power model lamination copper bar of described three single-phase power modules connects copper bar by second and is connected successively.Namely the capacitive stack copper bar 7 of adjacent two single-phase power modules 1 is connected by the first connection copper bar 9, and the power model lamination copper bar 8 of described adjacent two single-phase power modules 1 connects copper bar 12 by second and is connected.
In the embodiment of the present application, in order to make the high power combination of three level disclosed in the above embodiments of the present application formula power cell structure compact, good heat dissipation effect, described three single-phase power modules 1 and three radiators 5 are in one line to be respectively arranged on described backboard 4.
In the embodiment of the present application, the power output of described explosion-proof frequency converter is at more than 800KW, and the power of also namely described three level high power combination formula power cell is also at more than 800KW.Such as power is the three-level explosion-proof frequency converter of 1000KW, inside rectified power unit or converter module, each single-phase power module employs 3 power models (divided, be encapsulated as 3 power models by single-phase topological circuit), single power model maximum voltage can reach 1700V, and rated current is 1400A.As known by the art those of ordinary skill, power is larger, electric pressure is larger, the caloric value of power model and explosion-proof frequency converter thereof is larger, volume is also larger, and the three level high power combination formula power cell described in the application and explosion-proof frequency converter can solve large, the bulky problem of caloric value.
Be understandable that, in prior art, the type of radiator is varied, and the radiator in the application can be any one radiator of the prior art, such as heat-pipe radiator, aluminum profile heat radiator or cooled plate radiator etc.
In the embodiment of the present application, in order to strengthen radiating effect further, three level high power combination formula power cell in the above embodiments of the present application is also provided with 3 and described radiator blower fan 6 one to one, described blower fan 6 is for blowing described radiator 5, thus accelerate the gas flow of described spreader surface, take away the heat of radiator.
In the embodiment of the present application, in order to heat, quickening heat trnasfer that described single-phase power module 1 produces can be derived fast, the bottom of described single-phase power module 1 is provided with aluminium sheet 10, the power device of described single-phase power module 1 is mounted on described aluminium sheet 10, and described aluminium sheet 10 is mounted on the substrate of radiator 5.
In the embodiment of the present application, in order to strengthen the radiating efficiency to described single-phase power module further, three level high power combination formula power cell in the above embodiments of the present application can also comprise: the exhausting heat radiation assembly 11 being arranged on described single-phase power module 1 top, and described exhausting heat radiation assembly 11 is for carrying out exhausting heat radiation to described single-phase power module 1 inside.And, when not only a single-phase power module 1 is provided with exhausting heat radiation assembly 11, but also be provided with control module time, described exhausting heat radiation assembly 11 is arranged on the side at described single-phase power module 1 top, described control module is arranged on the opposite side at described single-phase power module 1 top, ensure that the compactedness of structure.
Disclosed herein as well is the circuit topology of the described single-phase power module 1 in a kind of above-described embodiment, see Fig. 5, specifically comprise:
First to fourth power device of connecting successively;
One end and the first power device K1 and the second clamp diode branch road that power device K2 common port is connected, the other end is connected with the common port of the 4th power device K4 with the 3rd power device K3;
Described clamp diode prop up route two mutually the first clamp diode D1 of series connection and the second clamp diode D2 form;
The common port of described second power device K2 and the 3rd power device K3 is used for input or output voltage signal.
Be understandable that, corresponding to three level high power combination formula power cell disclosed in the above embodiments of the present application, disclosed herein as well is a kind of three-level explosion-proof frequency converter, see Fig. 6, comprise: the inverter 221 of electrical connection and rectifying device 211, wherein, described inverter 221 and rectifying device 211 all can comprise the three level high power combination formula power cell in the above-mentioned any embodiment of the application.
Be understandable that, the backboard in inverter described in the above embodiments of the present application is an integral type backboard, and the backboard in described rectifying device is an integral type backboard, and namely the backboard in inverter and the backboard in rectifying device are two pieces of backboards independent of each other.
Finally, also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a three level high power combination formula power cell, is characterized in that, comprising:
Backboard;
Be arranged on three radiators on backboard the same face;
Single-phase power module that be arranged on three same structures on backboard another side, that connected by DC bus;
Described backboard offers three holes, described three single-phase power modules embed respectively described three holes and described three radiators one by one thermo-contact connect;
Be arranged on the control module for control described three single-phase power modules of described three single-phase power modules on one of them.
2. three level high power combination formula power cell according to claim 1, is characterized in that,
The capacitive stack copper bar of described three single-phase power modules connects copper bar by first and is connected successively, and the power model lamination copper bar of described three single-phase power modules connects copper bar by second and is connected successively.
3. three level high power combination formula power cell according to claim 1, is characterized in that,
Described three single-phase power modules and three radiators are in one line is respectively arranged on described backboard.
4. three level high power combination formula power cell according to claim 1, is characterized in that, comprising:
With described three radiators one_to_one corresponding, three blower fans be arranged on described backboard respectively.
5. three level high power combination formula power cell according to claim 1, is characterized in that, described radiator is heat-pipe radiator, aluminum profile heat radiator or cooled plate radiator.
6. three level high power combination formula power cell according to claim 1, is characterized in that,
The bottom of described single-phase power module is provided with aluminium sheet, and the power device of described single-phase power module is mounted on described aluminium sheet, and described aluminium sheet is mounted on the substrate of radiator.
7. three level high power combination formula power cell according to claim 1, is characterized in that, comprising:
Be arranged on described single-phase power module top, for carrying out the exhausting heat radiation assembly of exhausting to single-phase power module internal.
8. three level high power combination formula power cell according to claim 7, is characterized in that,
Described exhausting heat radiation assembly is arranged on the side at described single-phase power module top, and described control module is arranged on the opposite side at described single-phase power module top.
9. an explosion-proof frequency converter, is characterized in that, comprising: the inverter of electrical connection and rectifying device, and wherein, described inverter and rectifying device include the three level high power combination formula power cell described in claim 1-8 any one.
10. explosion-proof frequency converter according to claim 9, it is characterized in that, backboard in described inverter is an integral type backboard, and the backboard in described rectifying device is an integral type backboard, and namely the backboard in inverter and the backboard in rectifying device are two pieces of backboards independent of each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420757957.6U CN204271885U (en) | 2014-12-04 | 2014-12-04 | A kind of three level high power combination formula power cell and explosion-proof frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420757957.6U CN204271885U (en) | 2014-12-04 | 2014-12-04 | A kind of three level high power combination formula power cell and explosion-proof frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204271885U true CN204271885U (en) | 2015-04-15 |
Family
ID=52806730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420757957.6U Expired - Fee Related CN204271885U (en) | 2014-12-04 | 2014-12-04 | A kind of three level high power combination formula power cell and explosion-proof frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204271885U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787810A (en) * | 2017-01-18 | 2017-05-31 | 徐州中矿大传动与自动化有限公司 | Track traffic Bidirectional variable-flow cabinet |
-
2014
- 2014-12-04 CN CN201420757957.6U patent/CN204271885U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787810A (en) * | 2017-01-18 | 2017-05-31 | 徐州中矿大传动与自动化有限公司 | Track traffic Bidirectional variable-flow cabinet |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101860246A (en) | Inversion unit modularization structure device of photovoltaic inverter | |
| CN203482103U (en) | A laminated busbar used for connecting a DC capacitor busbar with IGBT power modules connected in parallel | |
| CN106887955A (en) | High-power DC/DC modules | |
| CN203339972U (en) | Sliding-rail type IGBT water-cooling power module | |
| CN201682403U (en) | Modularized structure device of inverter unit in photovoltaic inverter | |
| CN204271885U (en) | A kind of three level high power combination formula power cell and explosion-proof frequency converter | |
| CN201726303U (en) | High-power high-voltage inverter power unit | |
| CN204559426U (en) | Inverter and cooling air duct construction thereof | |
| CN203352457U (en) | Power module unit of energy storage converter | |
| CN105610342A (en) | Topological structure of photovoltaic grid-connected single-phase inverter employing fly-wheel neutral point potential | |
| CN203660898U (en) | Low-cost layout structure with low stray inductance in electronic equipment | |
| CN204517672U (en) | A kind of power layout structure of independent capacitance module | |
| CN205105111U (en) | Water -cooling variable frequency speed governing(VFSG) controlgear | |
| CN204290677U (en) | A kind of converter module | |
| CN205092782U (en) | Contravariant module layout structure | |
| CN205986640U (en) | Compact design liquid cooling contravariant module | |
| CN202949366U (en) | Modular structure of three-level converter for wind power generation | |
| CN203691254U (en) | Power unit structure for 100kw photovoltaic inverter | |
| CN202713172U (en) | Power module of wind power converter | |
| CN203180748U (en) | General frequency converter | |
| CN203626304U (en) | Preassembled container machine room | |
| CN202750019U (en) | Static reactive generator power unit structure | |
| CN203537260U (en) | Seven-level single-phase inverter circuit | |
| CN203434451U (en) | Combined-type SVG power cabinet | |
| CN203645557U (en) | Modular power assembly structure of solar photovoltaic inverter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 Termination date: 20211204 |