CN202856626U - Power unit of large-capacity and high-voltage frequency conversion device - Google Patents
Power unit of large-capacity and high-voltage frequency conversion device Download PDFInfo
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- CN202856626U CN202856626U CN 201220576357 CN201220576357U CN202856626U CN 202856626 U CN202856626 U CN 202856626U CN 201220576357 CN201220576357 CN 201220576357 CN 201220576357 U CN201220576357 U CN 201220576357U CN 202856626 U CN202856626 U CN 202856626U
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Abstract
The utility model discloses a power unit of a large-capacity and high-voltage frequency conversion device, wherein the power unit has advantages of compact structure and small size. The power unit comprises a housing, an unit control board, two fuses, a rectifier, an inverter, a protection bypass, an energy-storage capacitor bank, a pair of heat dissipation devices, three input copper bars and two output copper bars. Three pairs of copper cylinders are installed on the upper inner side of the front side plate of the housing, a copper bar is connected between the pair of copper cylinders which are located at the middle portion of the front side plate; the unit control board is installed on the lower portion of the outer side plate; the two fuses are installed on the pair of copper cylinders which are located at the upper portion of the front side plate and the pair of copper cylinders which are located at the lower portion of the front side plate correspondingly in a one-to-one manner; the rectifier, the inverter and the protection bypass are installed at the opening portion of the housing; the energy-storage capacitor bank is installed inside the housing at the lower portion; the pair of heat dissipation devices are installed in heat dissipation holes of the front side plate and the rear side plate correspondingly in a one-to-one manner; the three input copper bars are connected between the outer ends of the three pairs of copper cylinders and the rectifier; and the two output copper bars are connected between the inverter and the protection bypass.
Description
Technical field
The utility model relates to a kind of power cell of large capacity high converter plant.
Background technology
Large capacity high frequency control is used at pump class blower fan and is not only made its flow, pressure etc. precisely controlled, will obtain simultaneously very high energy-conservation repayment.The rotating speed of asynchronous motor is directly proportional with frequency, and frequency conversion has namely realized the speed governing of motor, and this speed-regulating range width from the principle, does not bring extra power loss.For pump and blower fan, fluid flow is directly proportional with the rotating speed first power, and the quadratic power of Torque and speed is directly proportional, and power is directly proportional with the cube of rotating speed, and rotating speed reduces, and motor power consumption will descend with cube, so the power savings highly significant of frequency control.
Power cell is most basic part in the large capacity high converter plant.This series products adopts the structure of flat mostly at present.Because power cell can produce a large amount of heats at work, and the savings of heat often causes the lost of life of the components and parts in these power cells, the characteristic of components and parts is unstable.In order to solve heat dissipation problem, usually adopt fan to dispel the heat.Yet along with the quantity product of the Primary Components such as the electric capacity in these power cells, power model, radiator, fan is more and more, volume is also increasing, has seriously hindered product to develop to miniaturization, is unfavorable for the integrated of large capacity high converter plant.
Summary of the invention
The purpose of this utility model is in order to overcome the deficiencies in the prior art, a kind of power cell of large capacity high converter plant to be provided, its compact conformation, and volume is small and exquisite, and production maintenance is convenient, and inductance is little, can also further improve the functional reliability of power cell,
A kind of technical scheme that realizes above-mentioned purpose is: a kind of power cell of large capacity high converter plant, comprise a housing, one unit controls plate, two fuses, one rectifier, one inverter, one protection bypass, one energy capacitance set, pair of heat sinks, three input copper bars and two output copper bars, wherein, before described housing comprises, back side panel, interior plate, top board and base plate and be the tetragonal body structure of an opening, before described, the upper outside of back side panel is offered respectively a louvre, and more than the upper inner of described front side board, in, under mode three pairs of copper posts are installed, between a pair of copper post at front side board middle part, connect a copper bar; Described unit controls plate is installed in the bottom of described outer panel; Described two fuses are installed in correspondingly on a pair of copper post that is positioned at described front side board top and are positioned on a pair of copper post of described front side board bottom; Described rectifier, inverter and protection bypass are installed on the insulation board, and this insulation board is installed in the oral area of described housing; Described energy capacitance set is installed in the bottom in the described housing by mounting panel and is connected with inverter with described rectifier by copper bar; Described pair of heat sinks is installed in the louvre of described forward and backward side plate correspondingly; One end of described three input copper bars is connected to the outer end of three pairs of copper posts correspondingly, and the other end of described three input copper bars is connected on the described rectifier; An other places is connected between described inverter and the described protection bypass in described two output copper bars one, and described two are exported outside the front side board that of copper bars extends to described housing.
The power cell of above-mentioned large capacity high converter plant, wherein, described rectifier is connected and composed and is installed in the upper inner of described insulation board by copper bar by three pairs of diodes; Described inverter is connected and composed and is installed in the center upper portion of described insulation board by copper bar by two couples of IGBT and two Absorption Capacitances; Described protection bypass is connected and composed and is installed in the upper outside of described insulation board by copper bar by two pairs of diodes and controllable silicon.
The power cell of above-mentioned large capacity high converter plant, wherein, a side of the top board of described housing is installed a hook bar, the interior plate of described housing is to downward-extension a plate, the medial and lateral of this connecting plate offer respectively one vertically to the kidney-shaped installing hole.
The power cell of above-mentioned large capacity high converter plant, wherein, two air-vents are offered respectively in the bottom of the forward and backward side plate of described housing.
The power cell of above-mentioned large capacity high converter plant, wherein, described unit controls plate is printed circuit board, on this unit controls plate a case is set also.
The technical scheme of the power cell of large capacity high converter plant of the present utility model, compact conformation, volume is small and exquisite, and production maintenance is convenient, adopts special-purpose radiator, can improve radiating efficiency, reduce plant bulk, inductance is little, can also further improve the functional reliability of power cell, thereby solved the existing product structure, the variety of issues such as volume is large, installation complexity, anti-interference is poor, inductance is large.
Description of drawings
Fig. 1 is the schematic diagram of the power cell of high voltage frequency converter of the present utility model;
Fig. 2 is the perspective view of the power cell of high voltage frequency converter of the present utility model;
Fig. 3 is the outer side view of the power cell of high voltage frequency converter of the present utility model;
Fig. 4 is the cut-away view of the power cell of high voltage frequency converter of the present utility model.
Embodiment
In order to understand the technical solution of the utility model better, also be described in detail by reference to the accompanying drawings below by specific embodiment:
See also Fig. 1, the power cell of high voltage frequency converter of the present utility model is by one group of secondary power supply of phase shifting transformer, and will exchange input rectifying by Three-phase full-bridge rectifier 4 is direct current, and stores energy in the energy capacitance set 7.Energy capacitance set 7 is selected in parallel or series connection according to cell voltage, is 815V such as busbar voltage, then the some thin-film capacitors in the energy capacitance set 7 is contacted to satisfy requirement of withstand voltage, and energy capacitance set 7 is selected number in parallel according to the size of cell capability.The power taking from the dc bus of the power panel of control section by Redundancy Design receives pwm signal that master control system sends and the operating state by control IGBT, output PWM voltage waveform.The state of supervisory circuit Real Time Monitoring IGBT and dc bus, with state feedback to master control system.When heavy fault appears in some power cells; master control system will be opened the protection bypass 6 of this power cell, make this power cell enter bypass state, and whole converter plant can work on; carry out the replacing of power cell until shut down opportune moment, avoid whole converter plant to shut down.
See also the power cell of Fig. 2 to Fig. 4 large capacity high converter plant of the present utility model; comprise a housing 1, a unit controls plate 2, two fuses 31,32, one rectifier 4, an inverter 5, a protection bypass 6, an energy capacitance set 7, pair of heat sinks 8, three input copper bars 91 and two output copper bars 92; wherein
Two fuses 31,32 are connected to correspondingly between a pair of copper post 17 on front side board top and between a pair of copper post 19 in the front side board bottom;
Rectifier 4, inverter 5 and protection bypass 6 are installed on the insulation board 14, and this insulation board 14 is installed in the oral area of housing 1;
Rectifier 4 connects and composes and is installed in the upper inner of insulation board 14 by three pairs of diodes 41,42,43 by copper bar;
Inverter 5 connects and composes and is installed in the center upper portion of insulation board 14 by two couples of IGBT51,52 and two Absorption Capacitances 53,54 by copper bar;
Protection bypass 6 is connected and composed and is installed in the upper outside of insulation board 14 by copper bar by two pairs of diodes 61,62 and controllable silicons 63;
One energy capacitance set 7 is made of three thin-film capacitors, and these three thin-film capacitors are installed in the bottom in the housing 1 by mounting panel 70 and are connected with inverter 5 by copper bar; Thin-film capacitor is nonpolarity electric power storage capacitor, without life problems, without the series connection problem, without heating problem;
Pair of heat sinks 8 respectively support 80 is installed in forward and backward side plate 11,12 the louvre accordingly, and this pair of heat sinks 8 adopts special-purpose aluminium radiator, can improve radiating efficiency, can reduce plant bulk again;
One end of three input copper bars 91 is connected to three pairs of copper posts 17,18,19 outer end correspondingly, and the other ends of three input copper bars 91 are connected on the rectifier 4;
Other places are connected between inverter 5 and the protection bypass 6 in two output copper bars 92 1, and of these two output copper bars 92 extends to outside the front side board 11 of housing 1, are used for outwards powering.
The power cell of large capacity high converter plant of the present utility model, compact conformation, volume is small and exquisite, and production maintenance is convenient, adopts special-purpose radiator, can improve radiating efficiency, reduce plant bulk, inductance is little, can also further improve the functional reliability of power cell, thereby solved the existing product structure, the variety of issues such as volume is large, installation complexity, anti-interference is poor, inductance is large.
Those of ordinary skill in the art will be appreciated that, above embodiment illustrates the utility model, and be not to be used as restriction of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model variation, the modification of the above embodiment.
Claims (5)
1. the power cell of a large capacity high converter plant; comprise a housing, a unit controls plate, two fuses, a rectifier, an inverter, a protection bypass, an energy capacitance set, pair of heat sinks, three input copper bars and two output copper bars; it is characterized in that
Described housing comprises forward and backward side plate, interior plate, top board and base plate and is the tetragonal body structure of an opening, the upper outside of described forward and backward side plate is offered respectively a louvre, and the upper inner of described front side board is installed three pairs of copper posts in the mode of upper, middle and lower, connects a copper bar between a pair of copper post at front side board middle part;
Described unit controls plate is installed in the bottom of described outer panel;
Described two fuses are installed in correspondingly on a pair of copper post that is positioned at described front side board top and are positioned on a pair of copper post of described front side board bottom;
Described rectifier, inverter and protection bypass are installed on the insulation board, and this insulation board is installed in the oral area of described housing;
Described energy capacitance set is installed in the bottom in the described housing by mounting panel and is connected with inverter with described rectifier by copper bar;
Described pair of heat sinks is installed in the louvre of described forward and backward side plate correspondingly;
One end of described three input copper bars is connected to the outer end of three pairs of copper posts correspondingly, and the other end of described three input copper bars is connected on the described rectifier;
An other places is connected between described inverter and the described protection bypass in described two output copper bars one, and described two are exported outside the front side board that of copper bars extends to described housing.
2. the power cell of large capacity high converter plant according to claim 1 is characterized in that,
Described rectifier is connected and composed and is installed in the upper inner of described insulation board by copper bar by three pairs of diodes;
Described inverter is connected and composed and is installed in the center upper portion of described insulation board by copper bar by two couples of IGBT and two Absorption Capacitances;
Described protection bypass is connected and composed and is installed in the upper outside of described insulation board by copper bar by two pairs of diodes and controllable silicon.
3. the power cell of large capacity high converter plant according to claim 1, it is characterized in that, one side of the top board of described housing is installed a hook bar, and the interior plate of described housing is to downward-extension a plate, the medial and lateral of this connecting plate offer respectively one vertically to the kidney-shaped installing hole.
4. the power cell of large capacity high converter plant according to claim 1 is characterized in that, two air-vents are offered respectively in the bottom of the forward and backward side plate of described housing.
5. the power cell of large capacity high converter plant according to claim 1 is characterized in that, described unit controls plate is printed circuit board, on this unit controls plate a case is set also.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220576357 CN202856626U (en) | 2012-11-02 | 2012-11-02 | Power unit of large-capacity and high-voltage frequency conversion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220576357 CN202856626U (en) | 2012-11-02 | 2012-11-02 | Power unit of large-capacity and high-voltage frequency conversion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202856626U true CN202856626U (en) | 2013-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220576357 Expired - Fee Related CN202856626U (en) | 2012-11-02 | 2012-11-02 | Power unit of large-capacity and high-voltage frequency conversion device |
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| CN (1) | CN202856626U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014187064A1 (en) * | 2013-05-22 | 2014-11-27 | Abb技术有限公司 | Power module for medium and high-voltage frequency converter and frequency converter comprising same |
-
2012
- 2012-11-02 CN CN 201220576357 patent/CN202856626U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014187064A1 (en) * | 2013-05-22 | 2014-11-27 | Abb技术有限公司 | Power module for medium and high-voltage frequency converter and frequency converter comprising same |
| US10707768B2 (en) | 2013-05-22 | 2020-07-07 | Abb Schweiz Ag | Power module for medium and high-voltage frequency converter and frequency converter comprising same |
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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 |
Granted publication date: 20130403 Termination date: 20191102 |
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| CF01 | Termination of patent right due to non-payment of annual fee |