CN201877824U - Direct current bus structure - Google Patents
Direct current bus structure Download PDFInfo
- Publication number
- CN201877824U CN201877824U CN201020638822XU CN201020638822U CN201877824U CN 201877824 U CN201877824 U CN 201877824U CN 201020638822X U CN201020638822X U CN 201020638822XU CN 201020638822 U CN201020638822 U CN 201020638822U CN 201877824 U CN201877824 U CN 201877824U
- Authority
- CN
- China
- Prior art keywords
- direct current
- bus structure
- utility
- filter capacitor
- model
- 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
Images
Abstract
The utility model relates to a direct current bus structure. The direct current bus structure is characterized by comprising filter capacitor and resistor combinations that comprises two filter capacitors connected in series and two voltage equalizing resistors respectively connected with the two filter capacitors in parallel. The number of the filter capacitor and resistance combinations is four. In the utility model, a leading-out terminal is fully filtered by an energy storage filter element in a direct current transmission circuit so that the switching voltage spike of IGBT (Insulated Gate Bipolar Translator)is filtered out to the greatest extent and does not produce unfavorable effect on the long line transmission of direct current. Without need of adding an absorption capacitor of overvoltage spike at the leading-out port of the direct current bus, the application cost of power electronics equipment for alternating current-direct current conversion is reduced.
Description
Technical field
The utility model relates to a kind of dc bus structure, is mainly used in the ac-dc conversion power electronic equipment.
Background technology
In ac/dc conversion power electronic equipment, dc bus generally works to connect converters spare (as IGBT) and dc energy storage element (as capacitor) and between and transmits energy.Between different AC and DC power electronic installations, the dc bus of interconnection also plays a part the dc energy transmission.The ac-dc conversion power electronic equipment that is connected by dc bus for needs and external equipment, under many situations, in order to suppress the due to voltage spikes that long line transmission occurs, need increase certain due to voltage spikes in DC port and absorb circuit, as hold the less capacitor of value and absorb the overvoltage spike, but so just increased cost.
The utility model content
Technical problem to be solved in the utility model is to overcome existing above-mentioned deficiency in the prior art, and provides a kind of simple in structure, effective dc bus structure.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: this dc bus structure, it is characterized in that the dc bus structure comprises filter capacitor resistance combination, the combination of filter capacitor resistance comprise the filter capacitor of two series connection and respectively with two two grading resistors that filter capacitor is in parallel.
Filter capacitor resistor group described in the utility model is combined into four groups.
The utility model is under the applied environment of many spatial limitation, by analysis and the reasonably copper bar design that circuit is connected, make the abundant filtering of exit through energy storage filter element in the direct current transmission circuit, make the switching voltage spike of IGBT obtain maximum filtering, can not have a negative impact the long line transmission of direct current.In actual applications, need not draw the absorption electric capacity that port adds the overvoltage spike, reduce the application cost of ac-dc conversion power electronic equipment at dc bus.
Description of drawings
Fig. 1 is the circuit structure diagram that the utility model embodiment uses.
Embodiment
Reach embodiment in conjunction with the accompanying drawings the utility model is carried out further detailed description.
Referring to Fig. 1, present embodiment dc bus structure 4(DC master row) dc energy that is mainly used between IGBT switching circuit 3 and the direct current outlet terminal 5 transmits, IGBT switching circuit 3 and dc bus structure 4 are connected by soft starting circuit, and dc bus structure 4 is connected with direct current outlet terminal 5.IGBT switching circuit 3 can adopt existing techniques in realizing.Dc bus structure 4 comprises the filter capacitor resistance combination 41 of some groups of parallel connections, and every group of filter capacitor resistance combination 41 comprises the filter capacitor C of two series connection and two grading resistor R in parallel with these two filter capacitor C respectively.Direct current outlet terminal 5 can adopt existing techniques in realizing.Soft starting circuit comprises that IGBT module 1(is called bus IGBT) and the soft start resistance 2 of IGBT module 1 parallel connection therewith.Described IGBT module 1 comprises insulated gate bipolar transistor D1 and inverse parallel diode D2, inverse parallel diode D2 positive pole connects insulated gate bipolar transistor D1 emitter, and inverse parallel diode D2 negative pole connects insulated gate bipolar transistor D1 collector electrode.
The copper bar rational deployment of the utility model by connecting between bus capacitor and the IGBT, form the structure of a plurality of bus capacitors to the filtering of IGBT bridge circuit switching voltage spike, strengthened the filtration result of bus capacitor greatly to the IGBT switching voltage, when making the outer spreading of rectifier, need not add extra absorption electric capacity at DC bus interface place apart from the direct current transmission cable.
On the implementation, can adopt copper bar or copper bar to add the mode of cable.On by the bus capacitor that copper bar had connected, select suitable dc bus tie point, maximize the filter elements such as bus capacitor on the main power transfer path, the switch overvoltage of IGBT in the main circuit can be reduced, save long apart from the necessary absorption electric capacity of dc bus.
The utility model has verified that through the test of actual experiment these dc bus structure 4 designs are obvious for the effect that IGBT overvoltage spike absorbs.For certain long apart from the dc bus transmission, the design of this kind DC master row can reduce due to voltage spikes greatly at the end of direct current transmission, saves the absorption electric capacity that direct current transmission two-port place adds especially.
Every simple deformation of the present utility model or equivalent transformation should be thought to fall into protection range of the present utility model.
Claims (2)
1. dc bus structure is characterized in that: described dc bus structure comprises the combination of filter capacitor resistance, the combination of filter capacitor resistance comprise the filter capacitor of two series connection and respectively with two two grading resistors that filter capacitor is in parallel.
2. dc bus structure according to claim 1 is characterized in that: described filter capacitor resistor group is combined into four groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020638822XU CN201877824U (en) | 2010-12-02 | 2010-12-02 | Direct current bus structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020638822XU CN201877824U (en) | 2010-12-02 | 2010-12-02 | Direct current bus structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201877824U true CN201877824U (en) | 2011-06-22 |
Family
ID=44165733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020638822XU Expired - Fee Related CN201877824U (en) | 2010-12-02 | 2010-12-02 | Direct current bus structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201877824U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115954851A (en) * | 2023-03-15 | 2023-04-11 | 三峡智控科技有限公司 | Direct current bus overvoltage protection circuit and monitoring and control method thereof |
-
2010
- 2010-12-02 CN CN201020638822XU patent/CN201877824U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115954851A (en) * | 2023-03-15 | 2023-04-11 | 三峡智控科技有限公司 | Direct current bus overvoltage protection circuit and monitoring and control method thereof |
| CN115954851B (en) * | 2023-03-15 | 2023-05-16 | 三峡智控科技有限公司 | Direct-current bus overvoltage protection circuit and monitoring and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104767194B (en) | A kind of high voltage power transmission current conversion station over-pressure safety device | |
| CN103354414A (en) | Parallel IGBT power unit | |
| CN203434841U (en) | Energy storage converter laminated busbar | |
| CN103187725A (en) | Direct current power transmission system | |
| CN201388156Y (en) | Novel precharge circuit for cascade high-voltage frequency converter | |
| CN201877824U (en) | Direct current bus structure | |
| CN102684504A (en) | Three-level direct current-direct current (dc-dc) converter | |
| CN110932569A (en) | Parallel structure of electric locomotive four-quadrant power module IGBT | |
| CN203840201U (en) | Power supply circuit for network distribution equipment temperature rise monitoring device | |
| CN202696465U (en) | Power device driving power supply for multilevel converter and high voltage frequency converter | |
| CN202374190U (en) | Single-phase and three-phase AC input compatible rectification circuit | |
| CN204349794U (en) | A kind of switching signal input circuit | |
| CN201839188U (en) | Multi-inverter parallel output current equalizing structure | |
| CN204361685U (en) | Wind turbine generator pusher side filter | |
| CN211089475U (en) | Parallel structure of electric locomotive four-quadrant power module IGBT | |
| CN103595282A (en) | Current conversion module circuit of modularized multi-level current converter | |
| CN201854171U (en) | Busbar structure for power element of high-voltage frequency converter | |
| CN202749807U (en) | Ethernet shunt transition power supply overvoltage protector | |
| CN205248817U (en) | Reactive compensation main circuit | |
| CN111224535A (en) | Capacitor series bus bar for testing dynamic characteristics of crimping type power module | |
| CN201733230U (en) | High voltage transducer circuit structure | |
| CN206117182U (en) | Photovoltaic power generation unit | |
| CN201532949U (en) | Insulated gate double-pole transistor system | |
| CN112751496A (en) | Current transformer | |
| CN203193277U (en) | DC power transmission system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI HI-TECH CONTROL SYSTEM CO., LTD. Free format text: FORMER OWNER: ZHEJIANG HAIDE NEW ENERGY CO., LTD. Effective date: 20140513 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 314500 JIAXING, ZHEJIANG PROVINCE TO: 201114 MINHANG, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140513 Address after: 201114, No. 777, Chun Chun Road, Shanghai, Minhang District Patentee after: Shanghai Haide Control System Co., Ltd. Address before: 314500 Tongxiang City, Jiaxing Province, near the South Ring Road No. 1320, No. Patentee before: Zhejiang Haide New Energy Co., Ltd. |
|
| 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: 20110622 Termination date: 20171202 |