CN206164342U - High reliability high voltage frequency converter - Google Patents
High reliability high voltage frequency converter Download PDFInfo
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- CN206164342U CN206164342U CN201620699001.4U CN201620699001U CN206164342U CN 206164342 U CN206164342 U CN 206164342U CN 201620699001 U CN201620699001 U CN 201620699001U CN 206164342 U CN206164342 U CN 206164342U
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- control system
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- frequency converter
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The utility model discloses a high reliability high voltage frequency converter, include: many pairs of limit winding transformers of three -phase, a N power unit and major control system, wherein: the former limit of many pairs of limit winding transformers of three -phase links to each other with three -phase grid's voltage output end, and each winding and a power unit on the vice limit of many pairs of limit winding transformers of three -phase link to each other, and isopic power unit establishes ties, master control system contains the control system more than two sets or two sets, adopts redundant control mechanism between the control system, carries out mutual information transmission through industrial bus, control system links to each other with all power unit by independent optic fibre. The utility model discloses an adopt reserve control system, satisfied the formation demand of operating mode enterprise, effectively improved high -voltage inverter's reliability, reduced the risk of the planned shut down of non - of converter.
Description
Technical field
The utility model is related to high-voltage frequency converter technology field, more particularly to a kind of high-reliability high frequency converter.
Background technology
With the development of Power Electronic Technique, frequency converter as Intelligent electronic control system important component part, in national Jing
The every field of Ji, such as electric power, water conservancy, petrochemical industry, metallurgy industry play more and more important effect.
The industrialized fast development of China promotes motor manufacture and develops to high-power direction with application.High-tension electricity
Machine is often the Primary Component in corresponding industry, and frequency converter, used as the sole source of high-voltage motor, its reliability becomes restriction
One big key factor of production.
Master control system plays a decisive role as the core of high voltage converter to the reliability of high voltage converter.Often
The master control system of rule design is made up of the part such as electric power loop, sampling circuit, control loop, electric power loop failure, sampling circuit
Exception or control loop failure will all cause frequency converter to be shut down, and cause production system major accident, affect the normal of operating mode enterprise
The production order, will also the steady of the infrastructure that corresponding electric power networks, oil gas pipeline etc. involve the interests of the state and the people be had influence on when serious
Fixed operation.
Utility model content
The utility model provides a kind of high-reliability high frequency converter, by using standby control system, meeting
The generation demand of operating mode enterprise, effectively increases the reliability of high voltage converter, reduces the unplanned property shutdown of frequency converter
Risk.
The utility model provides a kind of high-reliability high frequency converter, including：It is many vice-side winding transformers of three-phase, N number of
Power cell and master control system；Wherein：
The many former limits of vice-side winding transformer of the three-phase are connected with the voltage output end of three phase network, many secondary of three-phase around
Each winding of group transformer secondary is connected with a power cell, the power unit cascade of homophase；
The master control system includes two sets or more than two sets of control system, and Redundant Control is adopted between the control system
Mechanism, by industrial bus mutual information transmission is carried out；
The control system is connected by independent optical fiber with all power cells.
Preferably, the control system that often covers includes：Power supply, control station, PLC components and sampling apparatus.
Preferably, the sampling apparatus is Hall element.
Preferably, the former limit of many vice-side winding transformers of the three-phase passes through the electricity of primary cut-out and the three phase network
Pressure output end is connected.
A kind of high-reliability high transformer provided from such scheme, the utility model, master control system includes two
Set or more than two sets of control system, adopt Redundant Control mechanism between control system, by industrial bus mutual information is carried out
Transmission, when wherein a set of control system breaks down, can enable standby control system and be operated, so as to meet work
The generation demand of condition enterprise, effectively increases the reliability of high voltage converter, reduces the wind that the unplanned property of frequency converter is shut down
Danger.
Description of the drawings
In order to be illustrated more clearly that the utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or the accompanying drawing to be used needed for description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, in the premise for not paying creative work
Under, can be with according to these other accompanying drawings of accompanying drawings acquisition.
Fig. 1 is the main circuit topological structure of many level-type high voltage converters of power unit cascade disclosed in the utility model
Figure；
Fig. 2 is a kind of structural representation of high-reliability high frequency converter disclosed in the utility model embodiment one；
Fig. 3 is a kind of structural representation of high-reliability high frequency converter disclosed in the utility model embodiment two.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of the utility model protection.
As shown in figure 1, the main circuit of many level-type high voltage converters of the power unit cascade disclosed in the utility model is opened up
Structure chart is flutterred, the major loop of the cascaded high-voltage frequency converter for commonly using at present is mainly by many Hes of vice-side winding transformer 1 of three-phase
Several power cells 2 are constituted.
As shown in Fig. 2 be a kind of high-reliability high frequency converter disclosed in the utility model embodiment one, including：
The many vice-side winding transformers 1 of three-phase, N number of power cell 2 and master control system 30；Wherein：
The many former limits of vice-side winding transformer 1 of three-phase are connected with the voltage output end of three phase network, many vice-side windings of three-phase
Each winding of the secondary of transformer 1 is connected with a power cell 2, and the power cell 2 of homophase is connected；
Master control system 30 includes two sets or more than two sets of control system 301, and Redundant Control is adopted between control system 301
Mechanism, by industrial bus mutual information transmission is carried out；
Control system 301 is connected by independent optical fiber with all power cells 2.
The operation principle of above-described embodiment is：High voltage converter operationally, the wherein a set of control in master control system 30
System 301 is in running order, and the voltage, electric current to grid side and motor side is detected, and by optical fiber and each power
Unit 2 is connected, and power cell 2 is controlled.Often set control system 301 in master control system 30 carries out phase by industrial bus
Communication between mutually, it is ensured that the reception frequency converter that control system 301 can be complete is often covered in frequency converter running is
System data, after breaking down inside the control system 301 for enabling, due to the monitor in real time frequency converter of other control system 301
The state of running status and enable control system 301, it is possible to directly receiving control, according to identical algorithm frequency conversion is controlled
Device is continued to run with, and realizes the switching undisturbed function between control system 301, and control frequency converter continues stable operation.
It can thus be seen that in the above-described embodiments, master control system includes two sets or more than two sets of control system, control
Redundant Control mechanism is adopted between system, by industrial bus mutual information transmission is carried out, when wherein a set of control system occurs
During failure, standby control system can be enabled and be operated, so as to meet the generation demand of operating mode enterprise, be effectively increased
The reliability of high voltage converter, reduces the risk that the unplanned property of frequency converter is shut down.
As shown in figure 3, be a kind of high-reliability high frequency converter disclosed in the utility model embodiment two, in the embodiment
As a example by master control system comprising three sets of control systems, it is described in detail.
Specific high voltage converter is included：The many vice-side winding transformers 1 of three-phase, N number of power cell 2 and three sets of control systems
System, first set control system is included：First power supply (not indicating in figure), the first control station 3, the and of a PLC components 6
First sampling apparatus (is not indicated) in figure；Second set of control system is included：Second power supply (not indicating in figure),
Second control station 4, the 2nd PLC components 7 and the first sampling apparatus (not indicating in figure)；3rd set of control system is included：The
Three power supplies (not indicating in figure), the 3rd control station 5, the 3rd PLC components 8 and the 3rd sampling apparatus (are not marked in figure
Illustrate).
The former limit of many vice-side winding transformers 1 of three-phase is connected by primary cut-out with the voltage output end of three phase network,
Each winding of many secondary of vice-side winding transformer 1 of three-phase is connected with a power cell 2, and the power cell 2 of homophase is connected；
Redundant Control mechanism is adopted between three sets of control systems, by industrial bus 9 mutual information transmission is carried out；
Control system is connected by independent optical fiber with all power cells 2.
In the above-described embodiments, to avoid current supply circuit failure from causing three sets of control systems to fail simultaneously, the present embodiment pair
Often cover control system to be powered by power supply independent all the way respectively, often cover the power supply in control system only to correspondence
Control station, PLC components in control system, sampling apparatus, such as Hall element, are powered, it is ensured that single set of control system
Independence.It will be apparent that single power supply failure can only cause the set control system failure that it powers, do not interfere with
Other two sets of control systems.
Often cover control system voltage all respectively to grid side and motor side, electric current to detect, and distinguished by optical fiber
It is connected with each power cell, power cell is controlled.Three sets of control systems are carried out each other by industrial bus 9
Communication, it is ensured that the system data of the reception frequency converter that control system can be complete is often covered in frequency converter running.
Control system numbering is defined by hard contact between three sets of control systems, when being enabled by 1# control systems, other two
Set control system is in hot stand-by duty.Three sets of control systems are circulated switching and enable according to default order, it is ensured that frequency conversion
Device run duration only has all the time a set of control system sending control instruction, improves the operation stability of frequency converter.
For the problem being likely to occur in the handoff procedure in frequency converter running between three sets of control systems, this practicality
The new switching undisturbed being realized by the following method between three sets of control systems：
Communication is interconnected by industrial bus 9 between three sets of control systems, control system is often covered and is read respectively in addition
The data of two sets of control systems, and do not carry out the write operation of data.Three sets of control systems pass through high-speed light when frequency converter runs
Fibre enters the synchronous comparison voted data obtained with controlling cycle synchronization policy needed for arbitration mechanism of row clock, is reliably arbitrated
As a result, each control station determines whether oneself operation is normal according to arbitration result.
Because other two sets of control system monitor in real time frequency converter after breaking down inside the control system for enabling
Running status and enable the state of control station, it is possible to directly receive control, according to identical algorithm control frequency converter after
Reforwarding row, realizes the switching undisturbed function between control system, and control frequency converter continues stable operation.
If the function described in the present embodiment method is realized and as independent product pin using in the form of SFU software functional unit
When selling or using, during a computing device read/write memory medium can be stored in.Based on such understanding, the utility model reality
Applying the part of part that example contributes to prior art or the technical scheme can be embodied in the form of software product,
The software product is stored in a storage medium, including some instructions are used so that a computing device (can be personal meter
Calculation machine, server, mobile computing device or network equipment etc.) perform the whole of the utility model each embodiment methods described
Or part steps.And aforesaid storage medium includes：USB flash disk, portable hard drive, read-only storage (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can store journey
The medium of sequence code.
Each embodiment is described by the way of progressive in this specification, and what each embodiment was stressed is and other
The difference of embodiment, between each embodiment same or similar part mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or new using this practicality
Type.Various modifications to these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can in other embodiments be realized in the case of without departing from spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (4)
1. a kind of high-reliability high frequency converter, it is characterised in that include：The many vice-side winding transformers of three-phase, N number of power cell
And master control system；Wherein：
The many former limits of vice-side winding transformer of the three-phase are connected with the voltage output end of three phase network, and many vice-side windings of three-phase become
Each winding of depressor secondary is connected with a power cell, the power unit cascade of homophase；
The master control system includes two sets or more than two sets of control system, and Redundant Control machine is adopted between the control system
System, by industrial bus mutual information transmission is carried out；
The control system is connected by independent optical fiber with all power cells.
2. high-reliability high frequency converter according to claim 1, it is characterised in that the control system that often covers is wrapped
Include：Power supply, control station, PLC components and sampling apparatus.
3. high-reliability high frequency converter according to claim 2, it is characterised in that the sampling apparatus is hall sensing
Device.
4. high-reliability high frequency converter according to claim 3, it is characterised in that many vice-side winding transformations of the three-phase
The former limit of device is connected by primary cut-out with the voltage output end of the three phase network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620699001.4U CN206164342U (en) | 2016-07-05 | 2016-07-05 | High reliability high voltage frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620699001.4U CN206164342U (en) | 2016-07-05 | 2016-07-05 | High reliability high voltage frequency converter |
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| CN206164342U true CN206164342U (en) | 2017-05-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106059262A (en) * | 2016-07-05 | 2016-10-26 | 沈阳远大电力电子科技有限公司 | High-reliability high-voltage frequency converter |
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2016
- 2016-07-05 CN CN201620699001.4U patent/CN206164342U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106059262A (en) * | 2016-07-05 | 2016-10-26 | 沈阳远大电力电子科技有限公司 | High-reliability high-voltage frequency converter |
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