CN207184328U - The power-supply system and power cell of a kind of power cell - Google Patents
The power-supply system and power cell of a kind of power cell Download PDFInfo
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- CN207184328U CN207184328U CN201720774764.5U CN201720774764U CN207184328U CN 207184328 U CN207184328 U CN 207184328U CN 201720774764 U CN201720774764 U CN 201720774764U CN 207184328 U CN207184328 U CN 207184328U
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- 238000001914 filtration Methods 0.000 claims description 4
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Abstract
The utility model provides a kind of power-supply system of power cell, in the high voltage converter applied to cascade of power units composition, wherein, each power cell is connected with a power-supply system, and power-supply system includes：Single-phase voltage transformation unit, the input of single-phase voltage transformation unit are connected in parallel to the end of incoming cables of power cell；Rectification circuit unit, the AC conversion single-phase voltage transformation unit to be exported are the first DC voltage and exported；Isolating converter, the first DC voltage of input is switched into the DC voltage of N roads second and the 3rd DC voltage, and exporting all the way；Cell controller power conversion unit, the 3rd DC voltage is converted into the operating voltage of the cell controller in adaptive power unit；N number of driving power converting unit, each driving power converting unit is corresponding second DC voltage to be converted into the operating voltage of the driver element in adaptive power unit.The power-supply system is not only simple in structure, and is not influenceed by the barrier that power cell breaks down.
Description
Technical field
It the utility model is related to high-voltage frequency converter technology field, more particularly to the power-supply system and power of a kind of power cell
Unit.
Background technology
Frequency converter is the electric energy control that power frequency supply is transformed to another frequency using the on-off action of power semiconductor device
Device processed, and power cell is the major part for forming high voltage converter major loop, it is existing by cascade of power units technology shape
Into high voltage converter, to have that harmonic wave is small, power cell is interchangeable, can be mass, be easy to maintenance etc. prominent a little, thus
It is widely used, each power cell cascaded in the high-pressure frequency-conversion of formation is equal, therefore its power-supply system
It is identical；
It is particularly always, electric due to the own characteristic that power cell strong and weak electricity is combined for power cell, its power-supply system
Source system design is more complicated, should consider the power taking problem of power supply, considers driving power, the unit of device for power switching again
The isolating problem of controller power supply.
Present domestic main flow frequency converter uses unit bypass scheme more, now it is also contemplated that unit bypass driving power is set
Meter, separately have using realizing by the way of dc bus power taking.
Wherein problems be present by the DC bus powered mode of power cell：When serious event occurs for power cell
Barrier, such as during IGBT boosters, now unit inlet wire fuse can typically fuse, dc bus loses the energy to power-supply system power supply
Power, power-supply system are in paralyzed state.And unit bypass power supply mode is used, its driving power also needs to real using other modes
It is existing, its complex designing, cause hardware cost to rise.
The content of the invention
For above mentioned problem existing for the power-supply system in power cell in the prior art, one kind is now provided and is intended to structure letter
It is single not influenceed by power cell fault, the power supply system to the cell controller in power cell and driver element power supply can be stablized
System and power cell.
Concrete technical scheme is as follows：
A kind of power-supply system of power cell, applied to cascade of power units composition high voltage converter in, its feature exists
In each power cell is connected with a power-supply system, and the power-supply system includes：
Single-phase voltage transformation unit, the input of the single-phase voltage transformation unit are connected in parallel to the end of incoming cables of the power cell；
Rectification circuit unit, it is connected with the single-phase potential device, to the exchange for exporting the single-phase voltage transformation unit
Electricity is converted into the first DC voltage and exported；
Isolating converter, it is connected with the rectification circuit, first DC voltage of input is switched into N roads second
DC voltage and all the way the 3rd DC voltage, and by the second DC voltage described in N roads and the 3rd DC voltage all the way
Output；
Cell controller power conversion unit, is connected with the isolating converter, to by the 3rd direct current of input
Photovoltaic conversion is the operating voltage for the cell controller being adapted in the power cell；
N number of driving power converting unit, is connected with the isolating converter respectively, N number of driving power converting unit
Corresponded with the second DC voltage described in N roads, each driving power converting unit is straight to corresponding to general described second
Photovoltaic conversion is flowed for the operating voltage for the driver element being adapted in the power cell.
Preferably, the single-phase voltage transformation unit is isolating transformer, and the end of incoming cables is three-phase input, the isolation transformation
Device includes：
First winding, the input of first winding connect any one phase in the end of incoming cables, first winding
Output end be connected with the input of the rectification circuit power supply.
Preferably, the isolating transformer also includes：
The second winding isolated with first winding, the input of second winding connect residue in the end of incoming cables
Any one phase in two-phase, the bypass driver element of output end connection one of first winding.
Preferably, in addition to an electrochemical capacitor, the electrochemical capacitor are parallel to the output end of the rectification circuit unit, use
With first DC voltage exported to the rectification circuit unit be filtered processing and by after filtering handle after institute
The first direct voltage output is stated to the isolating converter.
Preferably, the isolating converter is isolated form dc-dc.
Preferably, the isolating converter includes a switch transformer, and the switch transformer is to by described in input
First DC voltage switchs to the DC voltage of N roads second and all the way the 3rd DC voltage.
Preferably, the N is 8 or the N is 4.
Preferably, the driver element is IGBT driver elements.
Also include a kind of power cell, applied in high voltage converter, wherein, including above-mentioned power-supply system.
Above-mentioned technical proposal has the following advantages that or beneficial effect：The power-supply system is not only simple in structure, and not by power
The barrier that unit breaks down influences, and what can be stablized provides work to the cell controller in power cell and multiple driver elements
Voltage.
Brief description of the drawings
With reference to appended accompanying drawing, more fully to describe embodiment of the present utility model.However, appended accompanying drawing is only used for
Bright and elaboration, does not form the limitation to the scope of the utility model.
Fig. 1 is a kind of structural representation of the power-supply system embodiment of power cell of the utility model.
Reference：
1st, power cell；2nd, single-phase voltage transformation unit；3rd, rectification circuit unit；4th, isolating converter；5th, driving power is changed
Unit；6th, cell controller power conversion unit；7th, driver element is bypassed.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the premise of creative work
Lower obtained every other embodiment, belong to the scope of the utility model protection.
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the utility model can
To be mutually combined.
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings, but not as of the present utility model
Limit.
The technical solution of the utility model includes a kind of power-supply system of power cell.
As shown in figure 1, a kind of embodiment of the power-supply system of power cell, the high pressure applied to cascade of power units composition
In frequency converter, wherein, each power cell 1 is connected with a power-supply system, and power-supply system includes：
Single-phase voltage transformation unit 2, the input of single-phase voltage transformation unit 2 are connected in parallel to the end of incoming cables of power cell 1；
Rectification circuit unit 3, it is connected with single-phase potential device, to the AC conversion for exporting single-phase voltage transformation unit 2
For the first DC voltage and export；
Isolating converter 4, is connected with rectification circuit, the first DC voltage of input is switched into the direct current of N roads second
Pressure and the 3rd DC voltage all the way, and by the DC voltage of N roads second and the 3rd direct voltage output all the way；
Cell controller power conversion unit 6, is connected with isolating converter 4, the 3rd DC voltage of input to be turned
Turn to the operating voltage of the cell controller in adaptive power unit 1；
N number of driving power converting unit 5, is connected with isolating converter 4 respectively, N number of driving power converting unit 5 and N roads
Second DC voltage corresponds, and each driving power converting unit 5 by corresponding second DC voltage being converted into adaptation
The operating voltage of driver element in power cell 1.
Used for cell controller in the prior art and driver element from the side of the dc bus power taking of power cell 1
Formula, in the failure of power cell 1 such as inlet wire fuse failure, now dc bus can not be then the unit control in power cell 1
The problem of device processed and the driver element of correlation are powered；
And by using unit bypass scheme, it is necessary to consider the design of unit bypass driving power, its driving power is also
Need to realize using other modes, not only complex designing also results in hardware cost rising to circuit.
Then it is connected in the utility model by single-phase voltage transformation unit 2 with two in the three-phase end of incoming cables of power cell 1, is led to
The alternating current of input is converted to the first DC voltage electricity output to isolating converter 4 by over commutation circuit unit 3, is turned by isolation
First DC voltage of the drop input of parallel operation 4 is converted into the DC voltage of N roads second and all the way the 3rd DC voltage；
The direct voltage output of N roads second is exported N number of driving power converting unit by isolating converter 4 to corresponding, each
Second DC voltage is converted into the working cell of adaptation driver element by driving converting unit；
Isolating converter 4 will control converting unit, unit control converting unit by the 3rd direct voltage output to unit all the way
The 3rd DC voltage to be converted into the operating voltage of adaptation unit controller.
In a kind of preferably embodiment, single-phase voltage transformation unit 2 is isolating transformer, and end of incoming cables is three-phase input, every
Include from transformer：
First winding, the first winding input connection end of incoming cables in any one phase, the output end of the first winding with it is whole
The input connection of current circuit power supply.
In a kind of preferably embodiment, isolating transformer also includes：
The second winding isolated with the first winding, it is any in remaining two-phase in the input connection end of incoming cables of the second winding
One phase, the bypass driver element 7 of output end connection one of the first winding.
In above-mentioned technical proposal, single-phase voltage transformation unit 2 accesses two-phase, single-phase transformation from the three-phase end of incoming cables of power cell 1
The first winding connection rectification circuit of unit 2, the second winding connection bypass driver element 7, wherein the voltage of the second winding output
Operating voltage for bypassing driver element 7.
In a kind of preferably embodiment, in addition to an electrochemical capacitor (not shown in figure), electrochemical capacitor is parallel to
The output end of rectification circuit unit 3, the first DC voltage to be exported to rectification circuit unit 3 are filtered processing and will be through
The first direct voltage output crossed after filtering process is to isolating converter 4.
In above-mentioned technical proposal, electrochemical capacitor is parallel to the output end of rectification circuit unit 3, to reduce AC ripple ripple
Line coefficient lifts efficient smooth direct current output.
In a kind of preferably mode, isolating converter 4 is isolated form dc-dc.
Preferably, isolating converter 4 includes a switch transformer (not shown in figure), and switch transformer is to will input
The first DC voltage switch to the DC voltage of N roads second and all the way the 3rd DC voltage.
In a kind of preferably embodiment, above-mentioned N is 8 or N is 4.
In a kind of preferably embodiment, driver element is IGBT driver elements.
In above-mentioned technical proposal, driver element can be IGBT driver elements, and the DC voltage N therein of N roads second can basis
The number of the driver element of setting is configured, and IGBT driver elements are preferably 4 or 8 in power cell 1, therefore right
The N answered may be selected 4 or 8.
Also include a kind of power cell in the technical solution of the utility model.
A kind of embodiment of power cell, applied in high voltage converter, wherein, including above-mentioned power-supply system.
The foregoing is only the utility model preferred embodiment, not thereby limit embodiment of the present utility model and
Protection domain, to those skilled in the art, it should can appreciate that all with the utility model specification and diagram
Hold the scheme obtained by made equivalent substitution and obvious change, should be included in protection model of the present utility model
In enclosing.
Claims (8)
1. a kind of power-supply system of power cell, in the high voltage converter applied to cascade of power units composition, it is characterised in that
Each power cell is connected with a power-supply system, and the power-supply system includes：
Single-phase voltage transformation unit, the input of the single-phase voltage transformation unit are connected in parallel to the end of incoming cables of the power cell；
Rectification circuit unit, it is connected with the single-phase potential device, the alternating current of the single-phase voltage transformation unit output to be turned
Turn to the first DC voltage and export；
Switch transformer, it is connected with the rectification circuit, first DC voltage of input is switched into the direct current of N roads second
Voltage and all the way the 3rd DC voltage, and by the second DC voltage described in N roads and the 3rd direct voltage output all the way；
Cell controller power conversion unit, is connected with the switch transformer, to by the 3rd DC voltage of input
It is converted into the operating voltage for the cell controller being adapted in the power cell；
N number of driving power converting unit, is connected with the switch transformer respectively, N number of driving power converting unit and N roads
Second DC voltage corresponds, and each driving power converting unit is to second DC voltage by corresponding to
It is converted into the operating voltage for the driver element being adapted in the power cell.
2. according to the power-supply system in claim 1, it is characterised in that the single-phase voltage transformation unit is isolating transformer,
The end of incoming cables is three-phase input, and the isolating transformer includes：
First winding, the input of first winding connect any one phase in the end of incoming cables, first winding it is defeated
Go out end to be connected with the input of the rectification circuit power supply.
3. according to the power-supply system in claim 2, it is characterised in that the isolating transformer also includes：
The second winding isolated with first winding, the input of second winding connect remaining two-phase in the end of incoming cables
In any one phase, first winding output end connection one bypass driver element.
4. according to the power-supply system in claim 1, it is characterised in that also including an electrochemical capacitor, the electrochemical capacitor
The output end of the rectification circuit unit is parallel to, first direct current to be exported to the rectification circuit unit is pressed into
Row filtering process and by first direct voltage output after handling after filtering to the switch transformer.
5. according to the power-supply system in claim 4, it is characterised in that also including a DC-DC converters, the DC-DC
Converter is connected between the rectification circuit and the switch transformer.
6. according to the power-supply system in claim 1, it is characterised in that the N is 8 or the N is 4.
7. according to the power-supply system in claim 1, it is characterised in that the driver element is IGBT driver elements.
8. a kind of power cell, applied in high voltage converter, it is characterised in that including any described in claim 1-7
Power-supply system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720774764.5U CN207184328U (en) | 2017-06-29 | 2017-06-29 | The power-supply system and power cell of a kind of power cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720774764.5U CN207184328U (en) | 2017-06-29 | 2017-06-29 | The power-supply system and power cell of a kind of power cell |
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| CN207184328U true CN207184328U (en) | 2018-04-03 |
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| CN201720774764.5U Withdrawn - After Issue CN207184328U (en) | 2017-06-29 | 2017-06-29 | The power-supply system and power cell of a kind of power cell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107196514A (en) * | 2017-06-29 | 2017-09-22 | 上海电气富士电机电气技术有限公司 | A kind of power-supply system of power cell |
-
2017
- 2017-06-29 CN CN201720774764.5U patent/CN207184328U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107196514A (en) * | 2017-06-29 | 2017-09-22 | 上海电气富士电机电气技术有限公司 | A kind of power-supply system of power cell |
| CN107196514B (en) * | 2017-06-29 | 2023-07-14 | 上海电气富士电机电气技术有限公司 | Power supply system of power unit |
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Granted publication date: 20180403 Effective date of abandoning: 20230714 |
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