CN203911742U - Bypass module of power unit, power unit device and high-voltage frequency converter - Google Patents
Bypass module of power unit, power unit device and high-voltage frequency converter Download PDFInfo
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- CN203911742U CN203911742U CN201420225960.3U CN201420225960U CN203911742U CN 203911742 U CN203911742 U CN 203911742U CN 201420225960 U CN201420225960 U CN 201420225960U CN 203911742 U CN203911742 U CN 203911742U
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Abstract
The utility model discloses a bypass module of a power unit, a power unit device and a high-voltage frequency converter. The bypass module comprises a bypass circuit, a bypass execution element and an external independent power supply module. The bypass execution element is connected between two output terminals of the power unit. An output terminal of the bypass circuit is connected to a control terminal of the bypass execution element, and drives the bypass execution element to operate according to a control signal transmitted by the power unit when the power unit fails, so that the two output terminals of the power unit can be short-circuited. The external independent power supply module is connected to a power supply terminal of the bypass circuit, and the conduction between the power supply terminal of the bypass circuit and the external independent power supply module is maintained in the case of power failure of an input-side power supply of the power unit. The beneficial effects of the utility model are that the bypass circuit is independently powered by the external independent power supply module and does not rely on the input-side power supply of the power unit, so that the power unit is prevented from being influenced by power failure of the input-side power supply, and the reliability is improved.
Description
Technical field
The utility model relates to high voltage converter field, more particularly, relates to a kind of bypass module with independently-powered function, power unit device and high voltage converter of power cell.
Background technology
Along with high voltage converter is in the extensive application of various industrial occasions in recent years, user is more and more higher to the reliability requirement of high voltage converter.Adopt power unit by-pass technology can greatly improve the reliability of high voltage converter complete machine.Generally this power unit by-pass technology is comprised of bypass circuit and bypass executive component.
In prior art, the supply power mode of this bypass circuit is generally by the mode of power cell input side power taking at present.But by there is following shortcoming from the direct power taking of power cell input side in bypass circuit:
When the input side power down of power cell, the power supply of bypass circuit disappears thereupon, thereby bypass circuit can not make bypass executive component keep the operate condition of bypass for a long time, and complete machine must be shut down, and reliability is lower.
Utility model content
The technical problems to be solved in the utility model is, for the above-mentioned defect of prior art, provides a kind of bypass module, power unit device and high voltage converter of power cell.
The utility model solves the technical scheme that its technical problem adopts: the bypass module of constructing a kind of power cell, it is characterized in that, described bypass module comprises bypass circuit, the bypass executive component being connected with described bypass circuit and the independently-powered module in outside being connected with described bypass circuit, wherein: described bypass executive component is connected between two outputs of power cell; The lead-out terminal of described bypass circuit is connected to the control end of bypass executive component and the control signal sent according to described power cell when described power cell breaks down drives the action of bypass executive component with two outputs of power cell described in short circuit; The independently-powered module in described outside is connected to the feeder ear of bypass circuit, and the feeder ear of described bypass circuit keeps and outside independently-powered module conducting when described power cell input side power supply power-fail.
In above-mentioned bypass module, described bypass circuit comprises power transfer module, the signal receiving module and the signal processing module that are all connected with described power transfer module, wherein: described power transfer module is connected with the independently-powered module in described outside, described power transfer module is converted to low-voltage dc power supply to power to described signal receiving module and signal processing module for the external power source that the independently-powered module in described outside is provided; Described signal receiving module for receiving the control signal of being sent by described power cell and described control signal being sent to described signal processing module when described power cell breaks down; Described signal processing module is connected with the control end of described bypass executive component with described signal receiving module respectively, and described signal processing module is processed bypass executive component described in rear drive and moved for the control signal receiving is amplified.
In above-mentioned bypass module, described bypass executive component comprises a switch element, and described signal receiving module drives described switch element conducting with two outputs of power cell described in short circuit by described signal processing module receiving the described control signal being sent by described power cell.
In above-mentioned bypass module, described bypass executive component also comprises the signal deteching circuit being connected with described switch element, described signal deteching circuit is for detection of the electric current that flows through described switch element, and when described switch element conducting, detected current signal is converted to feedback signal, and send to described power cell through described signal receiving module.
A kind of power unit device with bypass functionality is also provided, comprise power cell and the bypass module as above being connected with described power cell output, described bypass module comprises bypass circuit, the bypass executive component being connected with described bypass circuit and the independently-powered module in outside being connected with described bypass circuit, described bypass circuit comprises power transfer module, signal receiving module and signal processing module, described bypass executive component comprises that one is connected to the switch element between two outputs of described power cell, wherein:
Described power cell comprises a control unit, described control unit is connected with described signal receiving module, described control unit is for when described power cell breaks down, output control signal is given described signal receiving module, and described signal receiving module drives described switch element conducting with two outputs of power cell described in short circuit by described signal processing module receiving described control signal;
The independently-powered module in described outside is connected to the feeder ear of bypass circuit, and the feeder ear of described bypass circuit keeps and outside independently-powered module conducting when described power cell input side power supply power-fail.
A kind of high voltage converter is also provided, comprise a plurality of power unit devices that are connected in series, the bypass module that each power unit device includes power cell and is connected with described power cell, described bypass module comprises the independently-powered module in outside, bypass circuit and the bypass executive component being electrically connected successively, and each power cell comprises a control unit; The control signal that described bypass circuit sends according to described control unit when described power cell breaks down drives the action of bypass executive component with two outputs of power cell described in short circuit; The independently-powered module in described outside is connected to the feeder ear of bypass circuit, and the feeder ear of described bypass circuit keeps and outside independently-powered module conducting when described power cell input side power supply power-fail.
Implement the bypass module of power cell of the present utility model, power unit device and high voltage converter, there is following beneficial effect: bypass module comprises outside independently-powered module, bypass circuit and bypass executive component, independently-powered module connects the feeder ear of bypass circuit, because of bypass circuit independently-powered by the independently-powered module in outside, be no longer dependent on the input side power supply of power cell, even during the input side power down of power cell, the feeder ear of bypass circuit still keeps and outside independently-powered module conducting, can continue to drive bypass executive component to keep the operate condition of bypass, avoided the impact of power cell input side power down on bypass circuit, greatly improved the operational efficiency of high voltage converter, improved reliability.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the structural representation of the utility model power unit device embodiment.
Embodiment
For technical characterictic of the present utility model, object and effect being had more clearly, understand, now contrast accompanying drawing and describe embodiment of the present utility model in detail.
As shown in Figure 1, structural representation for this enforcement Novel power unit device embodiment, this device comprises power cell 4 and the bypass module being connected with power cell 4, in the present embodiment, bypass module has independently-powered function, without the input side power supply from power cell, carry out power taking, particularly, this bypass module comprises outside independent of module 1, bypass circuit 2 and bypass executive component 3, wherein: outside independent electric module 1, bypass circuit 2 and bypass executive component 3 connect successively, outside independently-powered module 1 is connected to the feeder ear of bypass circuit 2, for powering to bypass circuit 2, and keep and outside independently-powered module conducting when power cell input side power supply power-fail, power cell 4 is powered by its input side power supply, it comprises rectification circuit, DC filtering circuit and inverter circuit (not shown), rectification circuit is for being rectified into direct current by the alternating current of outside input, and by DC filtering circuit, carry out filtering, then through inverter circuit inversion the alternating current with output variable ratio frequency changer transformation.
Power cell 4 also comprises a control unit (not shown), this control unit is connected with bypass circuit 2, and while breaking down (comprising its input side power supply power-fail fault, driving malfunction, excess temperature fault etc.) at power cell, transmit control signal to bypass circuit 2, bypass circuit 2, after receiving this control signal, is controlled 3 actions of bypass executive component, two outputs of this power cell of short circuit, thereby make this power cell out of service, in bypass condition.
Especially, because bypass circuit 2 is powered by the independently-powered module 1 in outside, without from the power taking of power cell input side power supply, when the input side power supply power-fail of power cell, if power cell breaks down in bypass condition before, now because bypass circuit is powered by outside independent current source, even the input side power down of power cell, bypass circuit keeps and outside independently-powered module conducting, still can normally work, continue to drive bypass executive component to keep the operate condition of bypass, make complete machine unaffected, can continue completely reliably operation.
If before the input side power down of power cell, power cell 4 is normally worked, do not break down, but after the input side power down of power cell, it is power cell generation input side power supply power-fail fault, now bypass circuit 2 (for example still can receive the control signal that sent by power cell, can comprise a relay by control unit, when power cell input side power supply is normally worked, relay closes, during power down, relay disconnects, thereby detects this fault-signal according to the operating state of relay).Because bypass circuit is by independently-powered module 1 power supply in outside, the control signal (working state signal that is now equivalent to control unit internal relay) that bypass circuit 2 still can send according to control unit is controlled 3 actions of bypass executive component, be that bypass circuit 2 is normally worked, thereby make this power cell 4 in bypass condition, therefore, even power cell input side power supply power-fail, bypass circuit 2 still can drive 3 actions of bypass executive component with two outputs of this power cell of short circuit, make it in bypass condition, make complete machine unaffected, can continue completely reliably operation.
Above-mentioned bypass circuit 2 comprises again power transfer module, signal receiving module and signal processing module (not shown), power transfer module is connected with outside independent current source supply module 1, is converted to suitable low-voltage DC offers signal receiving module and signal processing module for external power source that the independently-powered module 1 in outside is provided (can alternating current or direct current).Signal receiving module is connected with signal processing module, signal receiving module is for being received in the control signal being sent by control unit when power cell 4 breaks down, this control signal is processed 3 actions of rear drive bypass executive component with two outputs of short circuit power cell 4 through the amplification of signal processing module, makes it in bypass condition.
Above-mentioned bypass executive component 3 comprises again switch element and the signal deteching circuit (not shown) between two outputs that are connected to power cell 4, bypass circuit 2 is connected to the control end (control end that is equivalent to bypass executive component 3) of this switch element, this switch element is controlled its conducting and shutoff by bypass circuit 2, signal deteching circuit is connected with this switch element, and for detection of flowing through the electric current of this switch element and the current signal detecting being converted to the signal receiving unit that feedback signal sends to bypass circuit 2.Particularly, signal receiving module in bypass circuit 2 receives after the control signal (representing fault signal) of the control unit transmission in power cell, signal receiving module sends to signal processing module by this control signal, signal processing module amplifies processes the conducting of rear drive switch element, thereby make two output short circuits of power cell 4, even if this power cell 4 is in bypass condition.In addition, after switch element conducting, signal deteching circuit detects to flow through the electric current of this switch element and this current signal is converted to feedback signal and sends to the signal receiving module in bypass circuit, signal receiving module in bypass circuit sends to the control unit in power cell by this feedback signal again, at control unit, receive after this feedback signal, show switch element conducting, bypass executive component moves, and this power cell is in bypass condition.In the present embodiment, switch element can be some electronic switching elements such as field effect transistor, controllable silicon, by bypass circuit, drives its conducting and shutoff.
The utility model also provides a kind of high voltage converter, this high voltage converter comprises a plurality of power unit devices that are connected in series, adopt in-line topological structure, the bypass module that each power unit device includes power cell and is connected with power cell, power cell comprises a control unit, and bypass module comprises again the independently-powered module in outside, bypass circuit and the bypass executive component being electrically connected successively; When breaking down, power cell (comprises power cell input side power supply power-fail fault), control unit transmits control signal to bypass circuit, signal receiving module in bypass circuit receives, and process the switch element in rear drive bypass executive component through the amplification of signal processing module, make switch element conducting, thereby make two output short circuits of this power cell, so that this power cell is in bypass condition.Especially, because each bypass module comprises the independently-powered module in the outside being connected with bypass circuit, independently-powered module is for independently-powered to bypass circuit, even when the input side power down of power cell, the feeder ear of bypass circuit keeps and outside independently-powered module conducting, still can normally work, thereby drive the action of bypass executive component to make this power cell in bypass condition or continue to drive bypass executive component to keep the operate condition of bypass.
Above-mentioned high voltage converter also comprises a main control module, this main control module is all connected by optical-fibre communications mode with the control unit in each power cell, control unit in each power cell is also for gathering some data messages (as AC-input voltage information, DC bus-bar voltage information, ac output voltage information, temperature information etc.) and sending to the main control module of high voltage converter in optical-fibre communications mode, main control module is controlled the switching tube in power cell according to these information again, to export the AC signal of variable ratio frequency changer transformation.
Implement the bypass module of a kind of power cell of the present utility model, power unit device and high voltage converter, bypass module comprises outside independently-powered module, bypass circuit and bypass executive component, because of bypass circuit independently-powered by the independently-powered module in outside, be no longer dependent on the input side power supply of power cell, even during the input side power down of power cell, still can continue to drive bypass executive component to keep the operate condition of bypass, avoided the impact of power cell input side power down on bypass circuit, greatly improved the operational efficiency of high voltage converter, improved reliability.
By reference to the accompanying drawings embodiment of the present utility model is described above; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; rather than restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not departing from the scope situation that the utility model aim and claim protect, also can make a lot of forms, within these all belong to protection of the present utility model.
Claims (6)
1. the bypass module of a power cell, it is characterized in that, described bypass module comprises bypass circuit, the bypass executive component being connected with described bypass circuit and the independently-powered module in outside being connected with described bypass circuit, wherein: described bypass executive component is connected between two outputs of power cell; The lead-out terminal of described bypass circuit is connected to the control end of bypass executive component and the control signal sent according to described power cell when described power cell breaks down drives the action of bypass executive component with two outputs of power cell described in short circuit; The independently-powered module in described outside is connected to the feeder ear of bypass circuit, and the feeder ear of described bypass circuit keeps and outside independently-powered module conducting when described power cell input side power supply power-fail.
2. bypass module according to claim 1, it is characterized in that, described bypass circuit comprises power transfer module, the signal receiving module and the signal processing module that are all connected with described power transfer module, wherein: described power transfer module is connected with the independently-powered module in described outside, described power transfer module is converted to low-voltage dc power supply to power to described signal receiving module and signal processing module for the external power source that the independently-powered module in described outside is provided; Described signal receiving module for receiving the control signal of being sent by described power cell and described control signal being sent to described signal processing module when described power cell breaks down; Described signal processing module is connected with the control end of described bypass executive component with described signal receiving module respectively, and described signal processing module is processed bypass executive component described in rear drive and moved for the control signal receiving is amplified.
3. bypass module according to claim 2, it is characterized in that, described bypass executive component comprises a switch element, and described signal receiving module drives described switch element conducting with two outputs of power cell described in short circuit by described signal processing module receiving the described control signal being sent by described power cell.
4. bypass module according to claim 3, it is characterized in that, described bypass executive component also comprises the signal deteching circuit being connected with described switch element, described signal deteching circuit is for detection of the electric current that flows through described switch element, and when described switch element conducting, detected current signal is converted to feedback signal, and send to described power cell through described signal receiving module.
5. the power unit device with bypass functionality, it is characterized in that, comprise power cell and be connected with described power cell output if claim 1 is to the bypass module as described in claim 4 any one, described bypass module comprises bypass circuit, the bypass executive component being connected with described bypass circuit and the independently-powered module in outside being connected with described bypass circuit, described bypass circuit comprises power transfer module, signal receiving module and signal processing module, described bypass executive component comprises that one is connected to the switch element between two outputs of described power cell, wherein:
Described power cell comprises a control unit, described control unit is connected with described signal receiving module, described control unit is for when described power cell breaks down, output control signal is given described signal receiving module, and described signal receiving module drives described switch element conducting with two outputs of power cell described in short circuit by described signal processing module receiving described control signal;
The independently-powered module in described outside is connected to the feeder ear of bypass circuit, and the feeder ear of described bypass circuit keeps and outside independently-powered module conducting when described power cell input side power supply power-fail.
6. a high voltage converter, it is characterized in that, comprise a plurality of power unit devices that are connected in series, the bypass module that each power unit device includes power cell and is connected with described power cell, described bypass module comprises the independently-powered module in outside, bypass circuit and the bypass executive component being electrically connected successively, and each power cell comprises a control unit; The control signal that described bypass circuit sends according to described control unit when described power cell breaks down drives the action of bypass executive component with two outputs of power cell described in short circuit; The independently-powered module in described outside is connected to the feeder ear of bypass circuit, and the feeder ear of described bypass circuit keeps and outside independently-powered module conducting when described power cell input side power supply power-fail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420225960.3U CN203911742U (en) | 2014-05-05 | 2014-05-05 | Bypass module of power unit, power unit device and high-voltage frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420225960.3U CN203911742U (en) | 2014-05-05 | 2014-05-05 | Bypass module of power unit, power unit device and high-voltage frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203911742U true CN203911742U (en) | 2014-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420225960.3U Expired - Lifetime CN203911742U (en) | 2014-05-05 | 2014-05-05 | Bypass module of power unit, power unit device and high-voltage frequency converter |
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| Country | Link |
|---|---|
| CN (1) | CN203911742U (en) |
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2014
- 2014-05-05 CN CN201420225960.3U patent/CN203911742U/en not_active Expired - Lifetime
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141029 |