CN202172365U - Power module and power conversion system - Google Patents
Power module and power conversion system Download PDFInfo
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- CN202172365U CN202172365U CN2010205021228U CN201020502122U CN202172365U CN 202172365 U CN202172365 U CN 202172365U CN 2010205021228 U CN2010205021228 U CN 2010205021228U CN 201020502122 U CN201020502122 U CN 201020502122U CN 202172365 U CN202172365 U CN 202172365U
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Abstract
The utility model provides a power module, comprising at least one power circuit, a fan assembly detachably arranged in the power circuit, a semiconductor conversion component used for converting dc signals inputted by a dc bus into AC signals and outputting the AC signals via an AC bus, a filter component arranged in the AC bus and used for filtering the AC signals outputted by the semiconductor conversion component and a power supply part used for supplying power supply for the power module, wherein the dc bus and/or the AC bus are/is provided with a protection component, and an input and/or an output line are/is broken when the system fails.
Description
Technical field
The technical scheme that the utility model proposes relates to a kind of power model.Specifically, relate to and a kind ofly be integrated with heat radiation and the power conversion module of defencive function and the filtering of output waveform.
Background technology
In recent years, the modularized design of product has obtained increasing application on industry.The corresponding function module is divided and be designed to so-called modularized design with different functions exactly.Product through to difference in functionality in the certain limit or different size carries out functional analysis, thus through to the selection of disparate modules with constitute the product that satisfies different demands.And, through the Different products demand is carried out power classification, can parallelly connected a plurality of modules.Through the modular product design, can simplify the development and Design process, avoid overlapping development to identical function in the different product, obtain the product of multiple difference in functionality with less exploitation.Various combination to functional module can be built into diversified product characteristic of meeting consumers' demand; And each functional module has physics and the electric interfaces that meets certain standard again; Therefore; Under the corresponding situation of actual conditions of buying in the division of module and interface definition and enterprise's mass production, logistics, production and service, just can use the mode of mass production to produce the product that needs customization.
Power conversion device, for example DC-to-dc (DC-DC) transducer or AC-DC (AC-DC) transducer etc. have purposes widely at electric field.At present, for the design of power conversion device, all adopt three-phase two level system usually.In typical power converter, need to use a plurality of same modules to realize whole function.Therefore, modularized design has obtained using widely in power converter.Through modularized design, the quantity that only need change module just can be regulated the performance of entire equipment.In addition, the consistency owing to performance between each module and structure just can make up the modular system structure at an easy rate.Through the same part of extensive buying, the overall cost of equipment also can be effectively controlled.Correspondingly, inventory management, service procedure and also can further be optimized to technical staff and user's training.Adopt modularized design, can be so that the design cycle of product be quick, reliability of products also is improved from the design cycle fast.
Typical power conversion module generally includes the parts of consumed power; For example semiconductor original paper and resistance etc.; The parts of these consumed powers are directly installed on the metal heat sink usually, make these parts directly link to each other with the heat exchange interface of radiator, to guarantee better heat radiating effect.Power conversion module also comprises the power semiconductor parts.In a power conversion module, can comprise single, two or six power semiconductor parts, be connected to anodal and negative pole pole through general DC bus between a plurality of semiconductor devices.For the DC-AC modular converter, a plurality of power semiconductor parts are connected to the AC signal that three-phase output can be provided.The operation of power semiconductor can be carried out break-make through the drive signal that gate drive circuit provides.
As stated, in order to improve the power converter efficiency of design, just need construct modular power conversion module.
Summary of the invention
A kind of preferred implementation according to the utility model provides a kind of power model, comprising: at least one power circuit; Fan component is installed on the power circuit removably; This power circuit further comprises: the semiconductors transitions parts, will convert AC signal to by the direct current signal of dc bus input, and through ac bus output; Filter a plurality of filter parts of the AC signal of semiconductors transitions parts output, be arranged on the ac bus; The radio frequency interference that is positioned at DC side suppresses parts; In the system failure, break off the guard block input or output circuit, be arranged in dc bus or the ac bus at least one; And, be connected with the semiconductors transitions parts for power model provides the feeder ear of power supply.The advantage of this module is that its design makes manufacturer to rationalize the configuration of part, and the manufacture process standardization obtains higher-quality product and cuts down production cost.And returning provides the supplier of services such as maintenance to provide convenience, and for example only need be furnished with single non-firm power module and need not prepare a plurality of replacement parts, and the process of attended operation is simply quick.Use this standardized module, can be so that manufacturer has more energy to drop into the upgrading product design.
Another preferred embodiment according to the utility model; Wherein: also comprise at least one controller in this power model; This controller is surveyed the signal that transmits on dc bus and the ac bus; And, corresponding control signal is provided to one or more power circuits based on the signal that is detected.
According to another preferred embodiment of the utility model, wherein: said filter assembly comprises PWM filter and linear filter and sinusoidal filter and rfi filter.
According to another preferred embodiment of the utility model, wherein: said guard block is arranged on the fuse wire protector on dc bus and the ac bus; Said power supply part comprises the soft charging circuit that is used for dc-link capacitance.
According to another preferred embodiment of the utility model, wherein: these semiconductors transitions parts are IGBT devices.
Another preferred embodiment according to the utility model also comprises: current circuit, this current circuit links to each other with controller, when controller is found fault, power model is broken off.
According to another preferred embodiment of the utility model, this power model also comprises: housing is used for power circuit and fan are encapsulated in wherein; At least one face of this housing is provided with ventilating opening; This housing comprises at least one demountable panel.Wherein, but the unitary member of power circuit and fan can be installed on the housing through the parts of plug.But the advantage of this plug power circuit design is, for manufacturing, installation and replacing provide reality and convenient mode.
Another preferred embodiment according to the utility model wherein also is provided with on this housing: display module, link to each other with power circuit, and be used to show the sign of power model and the operating state of power model; At least one COM1 links to each other with power circuit, is used for communicating with other equipment; The accessory power supply interface, the external auxiliary power supply can be connected with power circuit through this interface; And the outer surface of this housing is hackly.Wherein, display unit is configured to depend on the processing of master controller, and the demonstration about module status information can directly be provided.This power model also comprises the switch that can be provided with, and is used to indicate each power model, indicates through each module incident that will produce and belongs to which module, and each incident is corresponding with its module.At this moment, each module state that still maintains the standard.At last, this current loop safe in utilization is to provide fast independently system closing.Make the whole modules in system under the control of master controller, close immediately, or in the needs shutdown system, close any module.
According to one embodiment of present invention, the power conversion system that comprises a plurality of power models is provided, wherein: power model comprises: at least one power circuit; Fan component is installed on the power circuit removably; The semiconductors transitions parts will convert AC signal to by the direct current signal of dc bus input, and through ac bus output; Filter a plurality of filter parts of the AC signal of semiconductors transitions parts output, be arranged on the ac bus; The radio frequency interference that is positioned at DC side suppresses parts; In the system failure, break off the guard block input or output circuit, be arranged in dc bus or the ac bus at least one; For power model provides the feeder ear of power supply, be connected with the semiconductors transitions parts; At least one surveys the signal that transmits on dc bus and the ac bus, and one or more power circuits is provided the controller of corresponding control signal based on the signal that is detected.The controller of one of said a plurality of power models is designated as master controller; Said controller is through being arranged on operating voltage or the operating current that curtage sensing element on the ac bus detects each power model, and carries out Based Intelligent Control so that improve the parallel processing capability of said a plurality of power models according to testing result.
Description of drawings
These of the utility model will become from detailed description with reference to the accompanying drawings obviously with other aspects, wherein:
Fig. 1 shows the electrical block diagram according to a kind of power model of the utility model preferred embodiment;
Fig. 2 A and 2B show the power model sketch map of installing according to preferred embodiment, and
Fig. 3 A and 3B show the internal structure according to the power model of preferred embodiment.
Embodiment
Usually, DC-AC (DC-AC) transducer is called as inverter (inverter), and this is a kind of power equipment that is transformed into direct current alternating current.It is made up of inverter bridge, controller and filter circuit usually, adaptable across fields such as household electrical appliance and industrial equipments.The exemplary operation mode of voltage source inverter is all to have out of phase three to be responsible for conducting at any time, and each commutation is all carried out between two brachium pontis up and down in same phase.
Fig. 1 shows the schematic block circuit diagram according to a kind of power conversion module of the utility model preferred implementation.In order to realize good performance, the modular circuit of in this preferred implementation, describing is integrated a plurality of circuit elements.To this module be described according to accompanying drawing below.
Direct current passes through radio frequency interference (RFI) suppression device 10 ingoing power modular converters through DC fuse protection 11 and 11 '.This radio frequency interference suppresses parts can reduce the local electromagnetic radiation that produces significantly.Dc bus is divided into three branch roads, and every branch road is provided with two semiconductor device 13, for example IGBT device.Totally among the figure be divided into six semiconductor device of three groups, two semiconductor device 13 on every branch road are corresponding to a phase of alternating current, through the gate driver that does not illustrate among the figure, make same two semiconductor device alternate conduction in mutually.Make that the signal of semiconductor device output is a three-phase ac signal.
As shown in the figure, the circuit of output AC signal is provided with power filter reactor 15, soft charging circuit 14, filter 16 and protection mechanism 11 ", for example exchange fuse.To all be installed in the position of easy replacing and detection as the fuse for AC and DC protection of protection mechanism, to maintain easily operation.
All be provided with controller 110 in each power model, in power conversion system, adopt under the situation of a plurality of power models, with assigning the master controller that controller is a system.Each controller can show the state of power model and module operation is separately controlled.The communication control port 17 that also is provided with current loop 18 in the power conversion module and communicates with external equipment.Additional supply 19 is used under failure condition, giving this module that electric energy is provided.
The signal code that master controller 110 is produced (for example 10mA) will pass through current loop 18 and flow through each power model that disposes in the system.In each power model, observe this signal code and whether exist, and can when breaking down, interrupt this signal code.Disappear if find signal code, part or all of power model will be closed in certain hour (for example less than 10 μ s).According to such mode, can be when breaking down each module of disposing in can emergency shutdown system of master controller.Master controller when can also go wrong at the communication line with particular module cuts out corresponding module.Communication control port 17 uses the multi-level communication agreement, so that the communication of priority to be arranged between each module.
The also integrated fan unit 12 that is provided with in the power conversion module of present embodiment.Fan unit 12 is set near main heating equipment such as IGBT pipe 13, to improve the heat dispersion of module whole.
In the power conversion module of present embodiment, power supply and signal link are set to the form being convenient to install.This module on ac bus, also is provided with pulse-width regulated filter 111, so that can be exported sinusoidal voltage.Through integrated soft charging circuit 14, make this module directly to link to each other with AC power.On ac bus, also be provided with linear reactance 112, to avoid the Resonant Interaction between filtering capacitor and the other system capacitor.
Through being arranged on the curtage sensing element 113 on the ac bus, controller can detect when the operating voltage of front module or operating current, and carries out intelligent protection and independent control according to the parameter that detects, thereby improves parallel processing capability.
As shown in Figure 1, the power conversion module in the preferred embodiment has comprised the radio frequency interference suppression element that can weaken this eradiation effectively.Because therefore existing independently anti-electromagnetic interference element in each module just need not be provided with the whole electromagnetic compatibility filter to whole system.
Fig. 2 A and 2B show the external structure sketch map according to the power conversion device of the utility model preferred embodiment.
The shaggy metal material of preferred use is made this housing 22, so that user's operation, and can give good ground connection and the protection of internal electronic equipment.
Shown in Fig. 2 A, the surface of housing is provided with cooling air intake 21.Shown in Fig. 2 B, just be arranged in the housing position corresponding with cooling air intake 21 according to the power conversion module of the utility model.
On the housing shown in Fig. 2 A, have dismountable protecgulum 23, be convenient to the user and open and safeguard circuit for power conversion parts and the fan that is arranged in the housing.Preferably will the dismountable fan component 12 in power conversion module be arranged on and be convenient to the position of operating, for example near protecgulum 23 through protecgulum 23.According to the needs in real work, as long as be convenient to operate inner power circuit and fan part, dismountable panel also can be in other positions, the for example back side or side etc. on the housing.
Also be provided with power supply module 24 on the power conversion module housing, for whole module provides being connected of direct current and alternating current.Display unit 25 on the housing front panel can be used for being provided with and the sign number of display module (for example with equipment ID number one to one), and shows the running parameter and the state of power model.Like this, need not open protecgulum 23, just can discern the also working condition of determination module rapidly through module parameter and the state observed on the display unit.
In the front of housing additional supply interface 28 is set, is used to connect back-up source.When main power source breaks down, will be through the back-up source power supply to keep the work of module.
Fig. 3 A and 3B further show the set-up mode of each electrical/mechanical element in the power model portion.Shown in Fig. 3 A, comprise in the power model to dc-link capacitance device 32, and the resistance 31 that is provided with for this capacitor, this resistance is symmetrically arranged a pair of with respect to capacitor.Also comprise dc bus 33 in the power model; The electric capacity 34 that is used for local dc bus; Be arranged on the current sensor 35 of dc bus one side, semiconductor drivers circuit board 36, the inductor 37 that is used for the pulse-width regulated filter, line contactor 38 and the capacitor 39 that is used for filter.Wherein, line contactor 38 is used for providing with the independent of power supply to module and is connected.Fig. 3 B further illustrates cooling mechanism 311 and soft charging resistor 312.
Based on reading above-mentioned specification, those skilled in the art can visualize other modes of texturing outside the above-mentioned preferred implementation.But the protection range of the utility model should be confirmed according to following appended claim rather than above-mentioned preferred embodiment.The protection range of claims of the utility model should comprise that the general idea that is embodied with above-mentioned execution mode belongs to all modes of texturing in the same design.
Claims (10)
1. power model comprises:
At least one power circuit;
Fan component is installed on the power circuit removably;
This power circuit further comprises:
The semiconductors transitions parts will convert AC signal to by the direct current signal of dc bus input, and through ac bus output;
Filter a plurality of filter parts of the AC signal of semiconductors transitions parts output, be arranged on the ac bus;
The radio frequency interference that is positioned at DC side suppresses parts;
In the system failure, break off the guard block input or output circuit, be arranged in dc bus or the ac bus at least one; And
For power model provides the feeder ear of power supply, be connected with the semiconductors transitions parts.
2. power model according to claim 1, wherein:
Also comprise the signal that transmits at least one detection dc bus and the ac bus in this power model, and one or more power circuits are provided the controller of corresponding control signal based on the signal that is detected.
3. power model according to claim 1, wherein:
Said filter part comprises that PWM filter and linear filter and radio frequency interference suppress parts.
4. power model according to claim 1, wherein:
Said guard block is arranged on the fuse wire protector on dc bus and the ac bus;
Said power circuit comprises soft charging circuit.
5. power model according to claim 1, wherein:
These semiconductors transitions parts are IGBT devices.
6. power model according to claim 2 also comprises:
The current circuit that links to each other and when controller is found fault, power model is broken off with controller.
7. power model according to claim 1 also comprises
Housing is used for power circuit and fan are encapsulated in wherein;
At least one face of this housing is provided with ventilating opening;
This housing comprises at least one demountable panel.
8. power model according to claim 7 wherein also is provided with on this housing:
Link to each other with power circuit and show the display module of operating state of sign and the power model of power model;
At least one COM1 that links to each other with power circuit and communicate with other equipment;
The accessory power supply interface, the external auxiliary power supply can be connected with power circuit through this interface; And
The outer surface of this housing is hackly.
9. power conversion system that comprises a plurality of power models as claimed in claim 2, wherein:
The controller of one of said a plurality of power models is designated as master controller;
Said controller is through being arranged on operating voltage or the operating current that curtage sensing element on the ac bus detects each power model, and carries out Based Intelligent Control so that improve the parallel processing capability of said a plurality of power models according to testing result.
10. power conversion system according to claim 9 also comprises:
Switch is used to indicate each power model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205021228U CN202172365U (en) | 2010-08-19 | 2010-08-19 | Power module and power conversion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205021228U CN202172365U (en) | 2010-08-19 | 2010-08-19 | Power module and power conversion system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202172365U true CN202172365U (en) | 2012-03-21 |
Family
ID=45830551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205021228U Expired - Lifetime CN202172365U (en) | 2010-08-19 | 2010-08-19 | Power module and power conversion system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202172365U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105960143A (en) * | 2016-06-03 | 2016-09-21 | 上海机电工程研究所 | Modularization and heat radiation structure for power supply cabinet |
| CN106664029A (en) * | 2014-08-19 | 2017-05-10 | 华为技术有限公司 | Power converter and assembly method for assembling a power converter |
-
2010
- 2010-08-19 CN CN2010205021228U patent/CN202172365U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106664029A (en) * | 2014-08-19 | 2017-05-10 | 华为技术有限公司 | Power converter and assembly method for assembling a power converter |
| CN105960143A (en) * | 2016-06-03 | 2016-09-21 | 上海机电工程研究所 | Modularization and heat radiation structure for power supply cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120321 |
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| CX01 | Expiry of patent term |