CN105431792B - Multimachine frequency converter - Google Patents
Multimachine frequency converter Download PDFInfo
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- CN105431792B CN105431792B CN201480019864.6A CN201480019864A CN105431792B CN 105431792 B CN105431792 B CN 105431792B CN 201480019864 A CN201480019864 A CN 201480019864A CN 105431792 B CN105431792 B CN 105431792B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Inverter Devices (AREA)
Abstract
A kind of multimachine frequency converter, it may include：Main control unit, the N1 execution unit connected by COM1, wherein, the N1 execution unit common DC bus；Wherein, first COM1 of the main control unit connects with the second COM1 of the first execution unit in the N1 execution unit, the N1 execution unit includes N11 rectification unit and N12 inversion unit altogether, the N11 is positive integer, the N12 is the positive integer more than 1, and first execution unit is the execution unit in one end marginal position among the N1 execution unit connected by COM1.Technical scheme provided in an embodiment of the present invention is advantageous to simplify the complexity of the wire structures under frequency converter multimachine scene, improves the reliability of frequency converter multiple unit operation.
Description
Technical field
The invention mainly relates to electric and electronic technical field, and in particular to multimachine frequency converter.
Background technology
Currently, the most of frequency converters of in the market are unit frequency converter, and unit frequency converter is all using a control unit
An inversion unit is directly controlled, control unit does not control rectification unit typically, and concrete structure can be as shown in Fig. 1-a.
Unit frequency converter to be done and machine synchronous operation (the i.e. speed/torque of the load motor of at least two unit frequency converters
After the identical or corresponding or output-parallel of at least two unit frequency converters bringing onto load motor or asynchronous realize that factory is grand) when,
At least two unit frequency converters form frequency converter multi-computer system, and RS485 bus communication modes are based between each frequency converter.485 is total
The structure of line communication mode is as shown in Fig. 1-b, and system operation frequency is sent to each frequency converter by console by 485 buses, respectively
State feedback information is sent to console by frequency converter by bus.In addition, system start/stop machine signal that console provides and master
It is to be connected by independent signal line to realize that frequency converter, which is sent to from the dtc signal of frequency converter,.This multiple frequency converters are connected
Problem present in being applied at the scene in a manner of realizing and machine is run simultaneously is to realize that the cost of simultaneously machine synchronous operation is high, various
Control line wiring is complicated, and universal serial bus wiring is long.
Inventor has found in research and practice process, and existing frequency convertor system is when two-shipper or multimachine master ＆ slave control are applied
Some existing defects：Weak, the signal that anti-interference be present of communication mode between host and slave processors in itself be present in the communication of 485 bus modes
The shortcomings that transmission stability difference.Due to the limitation of communication mode, it is difficult to carry out the signal transmission of overlength distance.And master-slave system control
Make complicated, multiple signals line works simultaneously, and installation operation is cumbersome.
The content of the invention
The embodiment of the present invention provides a kind of multimachine frequency converter, to simplify answering for the wire structures under frequency converter multimachine scene
Polygamy, improve the reliability of frequency converter multiple unit operation.
First aspect of the embodiment of the present invention provides a kind of multimachine frequency converter, it may include：
Main control unit, the N1 execution unit connected by COM1, wherein, direct current is female altogether for the N1 execution unit
Line；
Wherein, the of the first COM1 of the main control unit and the first execution unit in the N1 execution unit
Two COM1s connect, wherein, the N1 execution unit includes N11 rectification unit and N12 inversion unit altogether, described
N11 is positive integer, and the N12 is the positive integer more than 1, and first execution unit is the N1 to be connected by COM1
The execution unit of one end marginal position is among individual execution unit.
Optionally, the second COM1 of the main control unit and the second execution unit in the N1 execution unit
First COM1 connects, wherein, second execution unit is in the N1 execution unit connected by COM1
Execution unit in other end marginal position.
Optionally, the multimachine frequency converter also includes the N2 execution unit connected by COM1, and the N2 are held
The common dc bus of row unit；
In the N2 execution unit that second COM1 of the main control unit is connected with by COM1
The first COM1 connection of three execution units, wherein, the N2 is positive integer, and the N2 execution unit includes rectification unit
And/or inversion unit, wherein, the 3rd execution unit is to be in the N2 execution unit connected by COM1
The execution unit of one end marginal position.
Optionally, first execution unit is inversion unit, the first COM1 of first execution unit and institute
The second COM1 connection of the 4th execution unit in N1 execution unit is stated, wherein, the 4th execution unit is rectification
Unit or inversion unit；
Or first execution unit is rectification unit, the first COM1 of first execution unit with it is described
The second COM1 connection of the 5th execution unit in N1 execution unit, wherein, the 5th execution unit is rectification list
Member or inversion unit.
Optionally, the COM1 be fiber optic communication port or ethernet communication port or level signal COM1 or
Differencing communication interface.
Second aspect of the embodiment of the present invention provides a kind of multimachine frequency converter, it may include：
Main control unit, the N3 execution unit by COM1 series connection and N4 by COM1 series connection perform list
Member；
Wherein, the N3 execution unit and the N4 execution unit common DC bus；
Wherein, the first COM1 of the main control unit and by COM1 connect the N3 execution unit in
The 6th execution unit the connection of the second COM1, the second COM1 of the main control unit and connected by COM1
The N4 execution unit in the 7th execution unit the first COM1 connection；
Wherein, X1 rectification unit and X2 inversion are included altogether in the N3 execution unit and the N4 execution unit
Unit, wherein, the X1 is positive integer, and the X2 is the positive integer more than 1, and the 6th execution unit is to pass through COM1
The execution unit of one end marginal position is in the N3 execution unit of series connection, the 7th execution unit is to pass through communication
The execution unit of one end marginal position is in the N4 execution unit of port series connection.
Optionally, the 6th execution unit is rectification unit, the first COM1 of the 6th execution unit and institute
The second COM1 connection of the 9th execution unit connection in N3 execution unit is stated, the 9th execution unit is rectification list
Member or inversion unit；
Optionally, the 6th execution unit is inversion unit, the first COM1 of the 6th execution unit and institute
The second COM1 connection of the 8th execution unit in N3 execution unit is stated, wherein, the 8th execution unit is rectification
Unit or inversion unit.
Optionally, the COM1 be fiber optic communication port or ethernet communication port or level signal COM1 or
Differencing communication interface.
The third aspect of the embodiment of the present invention provides a kind of multimachine frequency converter, it may include：
Main control unit, N5 rectification unit, the N6 inversion unit connected by COM1,
Wherein, the N5 rectification unit and the N6 inversion unit common DC bus；
Wherein, the of the first COM1 of the main control unit and the first inversion unit in the N6 inversion unit
Two COM1s connect, and the N5 is positive integer, the N6 is the positive integer more than 1, and first inversion unit is by logical
The inversion unit of one end marginal position is among the N6 inversion unit of letter port series connection.
Optionally, the second COM1 of the main control unit and the second inversion unit in the N6 inversion unit
First COM1 connects, wherein, second inversion unit is in the N6 inversion unit connected by COM1
Inversion unit in other end marginal position.
Optionally, the COM1 be fiber optic communication port or ethernet communication port or level signal COM1 or
Differencing communication interface.
Fourth aspect of the embodiment of the present invention provides a kind of multimachine frequency converter, it may include：
Main control unit, N9 rectification unit, by COM1 connect N7 inversion unit and pass through COM1 string
N8 inversion unit of connection；Wherein, the N9 rectification unit, the N7 inversion unit and the N8 inversion unit are straight altogether
Flow bus；
Wherein, the first COM1 of the main control unit and by COM1 connect the N7 inversion unit in
The first inversion unit the connection of the second COM1, the second COM1 of the main control unit and connected by COM1
The N8 inversion unit in the second inversion unit the first COM1 connection；
Wherein, the N7 and N8 is positive integer, and first inversion unit is by described in COM1 series connection
The inversion unit of one end marginal position is in N7 inversion unit, wherein, second inversion unit is to pass through COM1
The inversion unit of one end marginal position is in the N8 inversion unit of series connection.
Optionally, the COM1 be fiber optic communication port or ethernet communication port or level signal COM1 or
Differencing communication interface.
As can be seen that in some embodiments of the invention, multimachine frequency converter includes main control unit and multiple execution units, with
Existing frequency converter multi-computer system is compared, and is advantageous to be effectively reduced simultaneously machine cost.Frequency converter main control unit and multiple hold
Between row unit in a manner of 485 bus communications in serial communication mode substitution conventional inverter device multi-computer system, and then favorably
In eliminating the defects of transmission signal anti-interference is poor, transmission range is short, it is defeated to be advantageously implemented the super teletransmission of strong antijamming capability, enters
And be advantageous to improve the reliability of frequency converter multiple unit operation scene.Interconnection architecture phase between main control unit and execution unit
To simple, installation wiring is relatively easy, it is seen then that this structure of the embodiment of the present invention is advantageous to simplify frequency converter multimachine scene
Wire structures complexity.Also, due to being connected by COM1 between execution unit, be so advantageous to improve frequency converter more
The autgmentability of machine operation, can connect multiple execution units to meet corresponding demand according to different scenes by COM1.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1-a are a kind of schematic diagrames for unit frequency converter that prior art provides；
Fig. 1-b are a kind of multiple unit frequency converters and machine schematic diagrames that prior art provides；
Fig. 2-a are a kind of schematic diagrames of multimachine frequency converter provided in an embodiment of the present invention；
Fig. 2-b are the schematic diagrames of another multimachine frequency converter provided in an embodiment of the present invention；
Fig. 2-c are the schematic diagrames of another multimachine frequency converter provided in an embodiment of the present invention；
Fig. 2-d are the schematic diagrames of another multimachine frequency converter provided in an embodiment of the present invention；
Fig. 2-e are the schematic diagrames of another multimachine frequency converter provided in an embodiment of the present invention；
Fig. 2-f are the schematic diagrames of another multimachine frequency converter provided in an embodiment of the present invention；
Fig. 2-g are the schematic diagrames of another multimachine frequency converter provided in an embodiment of the present invention；
Fig. 3-a are the schematic diagrames of another multimachine frequency converter provided in an embodiment of the present invention；
Fig. 3-b are the schematic diagrames of another multimachine frequency converter provided in an embodiment of the present invention；
Fig. 3-c are the schematic diagrames of another multimachine frequency converter provided in an embodiment of the present invention；
Fig. 3-d are the schematic diagrames of another multimachine frequency converter provided in an embodiment of the present invention；
Fig. 3-e are the schematic diagrames of another multimachine frequency converter provided in an embodiment of the present invention；
Fig. 4-a are the schematic diagrames of another multimachine frequency converter provided in an embodiment of the present invention；
Fig. 4-b are the schematic diagrames of another multimachine frequency converter provided in an embodiment of the present invention；
Fig. 5 is the schematic diagram of another multimachine frequency converter provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
The embodiment of the present invention provides a kind of multimachine frequency converter, to simplify answering for the wire structures under frequency converter multimachine scene
Polygamy, improve the reliability of frequency converter multiple unit operation.
To enable goal of the invention, feature, the advantage of the present invention more obvious and understandable, below in conjunction with the present invention
Accompanying drawing in embodiment, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that disclosed below
Embodiment be only part of the embodiment of the present invention, and not all embodiment.Based on the embodiment in the present invention, this area
All other embodiment that those of ordinary skill is obtained under the premise of creative work is not made, belongs to protection of the present invention
Scope.
Term " first ", " second ", " the 3rd " " in description and claims of this specification and above-mentioned accompanying drawing
Four " etc. be for distinguishing different objects, rather than for describing particular order.In addition, term " comprising " and " having " and
Their any deformations, it is intended that cover non-exclusive include.Such as contain the process of series of steps or unit, method,
The step of system, product or equipment are not limited to list or unit, but alternatively also include the step of not listing or
Unit, or alternatively also include for the intrinsic other steps of these processes, method, product or equipment or unit.
Illustrate first, multimachine frequency converter provided in an embodiment of the present invention includes：Main control unit, at least one rectification unit and
At least two inversion units, wherein, part or all of rectification unit be able to can be controlled by main control unit in multimachine frequency converter
Controlled rectification unit, or can also be the uncontrollable rectification unit not controlled by main control unit, below in conjunction with the accompanying drawings to correlation
Structure is illustrated.
Referring firstly to Fig. 2-a, Fig. 2-a are that a kind of structure for multimachine frequency converter that one embodiment of the present of invention provides is shown
It is intended to.Wherein, as shown in Fig. 2-a, a kind of multimachine frequency converter that one embodiment of the invention provides may include：
Main control unit 201, the N1 execution unit 202 connected by COM1, the common direct current of above-mentioned N1 execution unit
Bus 210.
Wherein, first among the first COM1 P1 of main control unit 201 and above-mentioned N1 execution unit 202 performs list
Second COM1 P0 connections of member.Wherein, the first execution unit is the above-mentioned N1 execution unit connected by COM1
Among in one end marginal position execution unit (wherein, Fig. 2-a illustrate in framework, one of N1 execution unit after series connection
End margin position is the second COM1 P0 of residue the first execution unit, and other end marginal position is remaining first COM1
P1 the second execution unit).
Above-mentioned execution unit 202 is rectification unit or inversion unit, wherein, N1 execution unit 202 include altogether N11 it is whole
Unit and N12 inversion unit are flowed, above-mentioned N11 is positive integer, and above-mentioned N12 is the positive integer more than 1.
Wherein, two COM1s (COM1 P0 and COM1s are included with each execution unit 202 in Fig. 2-a
P1), certainly, the function of two COM1s can be with same or like, and the two COM1s can exchange under some scenes.
P1 points of the COM1 P0 of each execution unit in an intermediate position and COM1 in N1 execution unit 202 after series connection
Other execution units 202 are not connected, to realize the series connection of N1 execution unit 202.
Wherein, main control unit 201 can send command word by the first COM1 P1, data word (such as includes voltage
The data word of angle and voltage modulated than isopulse width modulated (PWM, Pulse Width Modulation) ripple critical data)
And/or status word etc..And the first execution unit then can receive the order from main control unit 201 by its second COM1 P0
Word, data word and/or status word etc., the first execution unit can be then forwarded by its first COM1 P1 (for can transparent transmission
Data can be forwarded directly, can then be forwarded after processing for the data that need to be handled) receive come from main control unit 201
Command word, data word and/or status word etc..Other execution units in above-mentioned N1 execution unit 202 can also pass through communication
Interface command word, data word and/or status word etc..
It should be noted that " forwarding " in various embodiments of the present invention, it may be possible to the data received are not made an amendment and
Directly forward, it is also possible to the data received forwarded after corresponding repair, such as the command word for receiving, data
In word and/or status word can transparent transmission content, then can not make an amendment and directly forward, and the command word for receiving, data
In word and/or status word can not transparent transmission content, then can forward after modified to it.
Wherein, the information such as N1 execution unit 202 can be sent according to main control unit reference clock and time offset are produced
Raw synchronizing signal；Also level angle and voltage modulated (such as can be included according to the command word from main control unit 201, data word
Than etc. PWM ripple critical datas data word) and/or status word etc. carry out corresponding to operate.For example, N1 execution unit 202 can
To enter the states such as electrifying startup or dormancy according to from the command word of main control unit 201.In another example N1 execution unit 202 can
, comprising data word level angle and voltage modulated than waiting PWM ripple critical datas, to be produced together according to from main control unit 201
The pulse width modulation wave of step；Worked using caused pulse width ripple motor.
As can be seen that the invention provides a kind of multimachine frequency converter, simultaneously machine synchronization and/or unsynchronized revolution can be realized,
Compared with realizing the method for parallel function using multiple frequency converters in the prior art, it will be apparent that reduce cost of implementation；In frequency conversion
It is normal with serial communication mode (such as switching Ethernet communication modes) substitution between the main control unit of device and multiple execution units
485 bus communication modes in frequency converter multi-computer system are advised, and then are advantageous to eliminate that transmission signal anti-interference is poor, transmission range
The defects of short, it is advantageously implemented that the super teletransmission of strong antijamming capability is defeated, and then is advantageous to improve frequency converter multiple unit operation scene
Reliability.Interconnection architecture between main control unit and execution unit is relatively easy, and installation wiring is relatively easy, it is seen then that this
Kind structure is advantageous to simplify the wire structures complexity of frequency converter multimachine scene.And due to being to pass through communication between execution unit
Port is connected, and is so advantageous to improve the autgmentability of frequency converter multiple unit operation, can be passed through COM1 string according to different scenes
Join multiple execution units to meet corresponding demand.
On the basis of Fig. 2-a, main control unit 201 also includes the second COM1 P0, and main control unit 201 can pass through
Two COM1 P0 send command word, data word and/or status word etc..
In some embodiments of the invention, as shown in Fig. 2-b, the second COM1 P0 of main control unit 201 can also be with
First COM1 P1 connections of the second execution unit in above-mentioned N1 execution unit 202 are tied so as to form communications loop design
Structure, main control unit 201 can be sent to each execution unit 202 by the second COM1 P0 and/or the first COM1 P1 and ordered
Word, data word and/or status word etc. are made, equivalent to the communication port for providing two transmission informations, introducing communications loop can be with
So that the communication port between each unit has redundant backup function, fault-resistant and fault-tolerant ability are strengthened, and are advantageous into one
Walk the reliability of lifting system operation.
In other embodiments of the present invention, as shown in fig. 2-c, above-mentioned multimachine frequency converter, which may also include, passes through communication ends
The N2 execution unit 203 of mouth series connection, wherein, the above-mentioned common DC bus 210 of N2 execution unit 203.
Wherein, the above-mentioned N2 execution that the second COM1 P0 of above-mentioned main control unit 201 connects with by COM1
First COM1 P1 connections of the 3rd execution unit among unit 203, wherein, above-mentioned N2 is positive integer, and above-mentioned N2 are held
Row unit includes rectification unit and/or inversion unit, wherein, the 3rd execution unit is above-mentioned N2 to be connected by COM1
The execution unit of one end marginal position is in execution unit 203.
Wherein, the exemplified above-mentioned main control units 201 of Fig. 2-c include two COM1s, the two COM1s all with
The COM1 connection of execution unit, is with the main distinction of framework shown in Fig. 2-b, main control unit 201 and execution unit it
Between do not form communications loop.Certainly, main control unit 201 may also comprise more COM1s, each communication ends of main control unit 201
Mouth can connect according to the COM1 of mode and execution unit shown in Fig. 2-c.
As shown in Fig. 2-d and Fig. 2-e, in some embodiments of the invention, above-mentioned first execution unit can be inversion list
Member, and the first COM1 P1 of above-mentioned first execution unit can be with the 4th execution unit among above-mentioned N1 execution unit
Second COM1 P0 connections, wherein, above-mentioned 4th execution unit is rectification unit or inversion unit.
Such as shown in Fig. 2-f and Fig. 2-g, in some embodiments of the invention, above-mentioned first execution unit can be rectification
Unit, the first COM1 P1 of above-mentioned first execution unit and second of the 5th execution unit in above-mentioned N1 execution unit
COM1 P0 connections, wherein, above-mentioned 5th execution unit is rectification unit or inversion unit.
It is appreciated that such as Fig. 2-d, Fig. 2-e, Fig. 2-f and Fig. 2-g are exemplified, in the N1 to be connected by COM1
In individual execution unit, rectification unit and inversion unit can be with interlaced arrangements, and certain rectification unit and inversion unit can also
Not interlaced arrangement.
In some embodiments of the invention, execution unit and the COM1 of control unit can be fiber optic communication port
Or ethernet communication port or level signal COM1 or Differencing communication interface or other types of COM1.
Below mainly by taking framework shown in Fig. 2-a as an example, some sides that synchronizing signal is produced in multimachine frequency converter are introduced in citing
Formula.The mode of synchronizing signal is produced in multimachine frequency converter under other frameworks to be analogized.
In some embodiments of the invention, the main control unit 201 is used for, and periodically sends and is referred to by the first system
The first system reference clock signal caused by clock；Calculate corresponding with each inversion unit in the N12 inversion unit
Time bias value, and each inversion unit into the N12 inversion unit sends the corresponding time bias
Value.
Wherein, each inversion unit in the N12 inversion unit, for receiving the corresponding time
After offset, time migration compensation is carried out to local clock using the time bias value received, will based on phaselocked loop
The first system reference clock signal that the main control unit 201 being currently received is sent compensates it with carrying out time migration
The local clock afterwards carries out step locking, is generated based on clock signal caused by the local clock for synchronous correction
The synchronizing signal of pulse width modulation wave caused by the inversion unit.
In other embodiments of the present invention, some possible modes of the operation control of multimachine frequency converter are introduced in citing.
Each inversion unit that main control unit 201 is used for into the N12 inversion unit sends corresponding pulse width modulation
Ripple critical data.Wherein, each inversion unit among the N12 inversion unit is used to generate synchronizing signal；Based on reception
The pulse width modulation wave critical data from the main control unit 201 arrived produces pulse width modulation wave, using described same
The pulse width modulation wave caused by signal synchronous correction is walked, is driven using the pulse width modulation wave after synchronous correction
Motor works.
Fig. 3-a are referred to, Fig. 3-a are the structural representations for another multimachine frequency converter that another embodiment of the present invention provides
Figure.Wherein, as shown in Fig. 3-a, another multimachine frequency converter that another embodiment of the present invention provides may include：
Main control unit 301, the N3 execution unit 302 connected by COM1 and N4 connected by COM1
Execution unit 303.
Wherein, above-mentioned N3 execution unit and above-mentioned N4 execution unit common DC bus 310.
Wherein, the first COM1 P1 of above-mentioned main control unit 301 and the above-mentioned N3 execution connected by COM1
Second COM1 P0 connections of the 6th execution unit in unit, the second COM1 P0 of above-mentioned main control unit and by logical
Believe the first COM1 P1 connections of the 7th execution unit in the above-mentioned N4 execution unit of port series connection.
Wherein, X1 rectification unit and X2 inversion are included altogether in above-mentioned N3 execution unit and above-mentioned N4 execution unit
Unit, wherein, above-mentioned X1 is positive integer, and above-mentioned X2 is the positive integer more than 1, and above-mentioned 6th execution unit is to pass through COM1
The execution unit of one end marginal position is in the above-mentioned N3 execution unit of series connection, wherein, the 7th execution unit is by logical
Believe the execution unit that one end marginal position is in the above-mentioned N4 execution unit of port series connection.Wherein, above-mentioned N3 and N4 is just
Integer, above-mentioned N3 are more than or equal to 3 with N4 sums.
Wherein, compared with framework shown in Fig. 2-a to be illustrated in previous embodiment, in framework shown in the present embodiment Fig. 3-a, position
Include X1 rectification unit and X2 altogether in the above-mentioned N3 execution unit and above-mentioned N4 execution unit of the both sides of main control unit 301
Individual inversion unit, that is to say, that the both sides of main control unit 301 can dispose at least one inversion unit respectively, and frame shown in Fig. 2-a
In structure, the wherein side of main control unit 301 just deploys at least two inversion units and (the N1 execution of at least one rectification unit
Unit 202 includes N11 rectification unit and N12 inversion unit altogether).
Wherein, main control unit 301 can be sent respectively by the first COM1 P1 and the second COM1 P0 command word,
Data word and/or status word etc. to N3 execution unit 302 and N4 execution unit 303, it is specific send and the process such as forwarding with
Preceding sections are similar, will not be repeated here.
Such as shown in Fig. 3-b and Fig. 3-c, in some embodiments of the invention, above-mentioned 6th execution unit can be rectification
Unit, and the first COM1 P1 of above-mentioned 6th execution unit can be with the 9th execution unit among above-mentioned N3 execution unit
The second COM1 P0 connections, wherein, above-mentioned 9th execution unit is rectification unit or inversion unit.
Such as shown in Fig. 3-d and Fig. 3-e, in some embodiments of the invention, above-mentioned 6th execution unit can be inversion
Unit, the first COM1 P1 of above-mentioned 6th execution unit and second of the 8th execution unit in above-mentioned N3 execution unit
COM1 P0 connections, wherein, above-mentioned 8th execution unit is rectification unit or inversion unit.
It is appreciated that such as Fig. 3-b, Fig. 3-c, Fig. 3-d and Fig. 3-e are exemplified, in the N3 to be connected by COM1
In individual execution unit, rectification unit and inversion unit can be with interlaced arrangements, and certain rectification unit and inversion unit can also
Not interlaced arrangement.
In some embodiments of the invention, execution unit and the COM1 of control unit can be fiber optic communication port
Or ethernet communication port or level signal COM1 or Differencing communication interface or other types of COM1.
As can be seen that the invention provides a kind of multimachine frequency converter, it can realize and machine is synchronous and/or asynchronous fortune
OK, compared with realizing the method for parallel function using multiple frequency converters in the prior art, it will be apparent that reduce cost of implementation；Its
In, with serial communication mode (such as switching Ethernet communication side between the main control unit and multiple execution units of frequency converter
Formula) substitution conventional inverter device multi-computer system in 485 bus communication modes, and then be advantageous to eliminate transmission signal anti-interference
Difference, the defects of transmission range is short, it is defeated to be advantageously implemented the super teletransmission of strong antijamming capability, and then is advantageous to improve frequency converter multimachine
The reliability of Run-time scenario.Interconnection architecture between main control unit and execution unit is relatively easy, and installation wiring is relatively simple
It is single, it is seen that this structure is advantageous to simplify the wire structures complexity of frequency converter multimachine scene.Also, due to be execution unit it
Between connected by COM1, be so advantageous to improve frequency converter multiple unit operation autgmentability, can be passed through according to different scenes
COM1 connects multiple execution units to meet corresponding demand.
Below mainly by taking framework shown in Fig. 3-a as an example, some sides that synchronizing signal is produced in multimachine frequency converter are introduced in citing
Formula.The mode of synchronizing signal is produced in multimachine frequency converter under other frameworks to be analogized.
In some embodiments of the invention, the main control unit 301 is used for, and periodically sends and is referred to by the first system
The first system reference clock signal caused by clock；Calculate corresponding with each inversion unit in the X2 inversion unit
Time bias value, and each inversion unit into the X2 inversion unit sends the corresponding time bias value.
Wherein, each inversion unit in the X2 inversion unit, for receive the corresponding time bias value it
Afterwards, time migration compensation is carried out to local clock using the time bias value received, will be currently received based on phaselocked loop
The first system reference clock signal that the main control unit 301 that arrives is sent with it is described after progress time migration compensation
Local clock carries out step locking, is generated based on clock signal caused by the local clock for the synchronous correction inversion list
The synchronizing signal of pulse width modulation wave caused by member.
Below mainly by taking framework shown in Fig. 3-a as an example, some modes of the operation control of multimachine frequency converter are introduced in citing.Its
The operation control method of multimachine frequency converter under its framework can analogize.
In some embodiments of the invention, the main control unit 301 is used for, each into the X2 inversion unit
Inversion unit sends corresponding pulse width modulation wave critical data.Each inversion unit in the X2 inversion unit
For generating synchronizing signal；Produced based on the pulse width modulation wave critical data from the main control unit 301 received
Pulse width modulation wave, using the pulse width modulation wave caused by the synchronizing signal synchronous correction, utilize synchronous correction
Pulse width modulation wave motor work afterwards.
Fig. 4-a are referred to, Fig. 4-a are the structural representations for another multimachine frequency converter that another embodiment of the present invention provides
Figure.Wherein, as depicted in fig. 4-a, another multimachine frequency converter that another embodiment of the present invention provides may include：Main control unit
401st, N5 rectification unit 402, the N6 inversion unit 403 connected by COM1.
Wherein, above-mentioned N5 rectification unit 402 and the common DC bus 410 of above-mentioned N6 inversion unit 403.
Wherein, the first inversion list in the first COM1 P1 and above-mentioned N6 inversion unit of above-mentioned main control unit 401
Second COM1 P0 connections of member, wherein, above-mentioned N5 is positive integer, above-mentioned N6 is the positive integer more than 1, above-mentioned first inversion
Unit is the inversion unit in one end marginal position among the above-mentioned N6 inversion unit connected by COM1.Wherein,
In Fig. 4-a citing frameworks, one end marginal position of N6 inversion unit after series connection is the first of the second COM1 P0 of residue
Inversion unit, other end marginal position is the first COM1 P1 of residue the second inversion unit, and the first inversion unit is remaining
The second COM1 P0 be connected with the first COM1 P1 of above-mentioned main control unit 401.
As can be seen that in framework shown in Fig. 4-a citings, N5 rectification unit 402 is not controlled not by main control unit 401
Controlled rectification unit.And in previous embodiment, as shown in Fig. 2-a~Fig. 2-g shown in framework or 2-a~Fig. 2-e citings in framework,
Some rectification units are the controlled rectification units that can be controlled by main control unit.
Wherein, main control unit 401 can send command word, data word and/or status word etc. by the first COM1 P1
To the first inversion unit, the process such as specific transmission and forwarding is similar to preceding sections, will not be repeated here.
As can be seen that the invention provides a kind of multimachine frequency converter, it can realize and machine is synchronous and/or asynchronous fortune
OK, compared with realizing the method for parallel function using multiple frequency converters in the prior art, it will be apparent that reduce cost of implementation；Becoming
With 485 buses in serial communication mode substitution conventional inverter device multi-computer system between the main control unit and inversion unit of frequency device
Communication mode, and then be advantageous to eliminate the defects of transmission signal anti-interference is poor, transmission range is short, it is advantageously implemented anti-interference energy
The strong super teletransmission of power is defeated, and then is advantageous to improve the reliability of frequency converter multiple unit operation scene.Main control unit and inversion list
Interconnection architecture between member is relatively easy, and installation wiring is relatively easy, it is seen that this structure is advantageous to simplify frequency converter multimachine fortune
The wire structures complexity of row scene.Also, due to being connected by COM1 between inversion unit, be so advantageous to improve
The autgmentability of frequency converter multiple unit operation scene, multiple inversion units can be connected by COM1 to meet according to different scenes
Corresponding demand.
Referring to Fig. 4-b, Fig. 4-b are shown among some embodiments of the present invention, and main control unit 401 includes the second communication ends
Mouth P0, it is connected with the first COM1 P1 of the second inversion unit in above-mentioned N6 inversion unit, wherein, above-mentioned second is inverse
The inversion unit of other end marginal position is in becoming unit as the above-mentioned N6 inversion unit connected by COM1.
It is appreciated that Fig. 4-b show a kind of communications loop design structure, introducing communications loop causes between each unit
Communication port has redundant backup function, and main control unit 401 can pass through the first COM1 P1 and/or the second COM1 P0
Command word, data word and/or status word etc. are sent to each inversion unit, this is equivalent to the communication for providing two transmission informations
Passage, fault-resistant and fault-tolerant ability are strengthened, and are advantageous to further lifting system reliability of operation.
In some embodiments of the invention, inversion unit, rectification unit, the COM1 of control unit can be optical fiber
COM1 or ethernet communication port or level signal COM1 or Differencing communication interface or other types of communication ends
Mouthful.
Below mainly by taking framework shown in Fig. 4-a as an example, some sides that synchronizing signal is produced in multimachine frequency converter are introduced in citing
Formula.The mode of synchronizing signal is produced in multimachine frequency converter under other frameworks to be analogized.
In some embodiments of the invention, the main control unit 401 is used for, and periodically sends and is referred to by the first system
The first system reference clock signal caused by clock；Calculate corresponding with each inversion unit in the N6 inversion unit
Time bias value, and each inversion unit into the N6 inversion unit sends the corresponding time bias value.
Wherein, each inversion unit in the N6 inversion unit, for receive the corresponding time bias value it
Afterwards, time migration compensation is carried out to local clock using the time bias value received, will be currently received based on phaselocked loop
The first system reference clock signal that the main control unit 401 that arrives is sent with it is described after progress time migration compensation
Local clock carries out step locking, is generated based on clock signal caused by the local clock for the synchronous correction inversion list
The synchronizing signal of pulse width modulation wave caused by member.
Below mainly by taking framework shown in Fig. 4-a as an example, some modes of the operation control of multimachine frequency converter are introduced in citing.Its
The operation control method of multimachine frequency converter under its framework can analogize.
In some embodiments of the invention, the main control unit 401 is used for, each into the N6 inversion unit
Inversion unit sends corresponding pulse width modulation wave critical data.Each inversion unit in the N6 inversion unit
For generating synchronizing signal；Produced based on the pulse width modulation wave critical data from the main control unit 401 received
Pulse width modulation wave, using the pulse width modulation wave caused by the synchronizing signal synchronous correction, utilize synchronous correction
Pulse width modulation wave motor work afterwards.
Fig. 5 is referred to, Fig. 5 is the structural representation for another multimachine frequency converter that an alternative embodiment of the invention provides
Figure.Wherein, as shown in figure 5, another multimachine frequency converter that an alternative embodiment of the invention provides may include：
Main control unit 501, N9 rectification unit 502, by COM1 connect N7 inversion unit 503 and by lead to
Believe the N8 inversion unit 504 of port series connection.Wherein, above-mentioned N9 rectification unit, above-mentioned N7 inversion unit and above-mentioned N8
Inversion unit common DC bus 510.
Wherein, the first COM1 P1 of above-mentioned main control unit 501 and the above-mentioned N7 inversion connected by COM1
Second COM1 P0 connections of the 3rd inversion unit in unit 503, the second COM1 P0 of above-mentioned main control unit 501 and
First COM1 P1 connections of the 4th inversion unit in the above-mentioned N8 inversion unit 504 connected by COM1.
Wherein, above-mentioned N7 and above-mentioned N8 is positive integer, and above-mentioned 3rd inversion unit is by the above-mentioned of COM1 series connection
The inversion unit of one end marginal position is in N7 inversion unit, wherein, above-mentioned 4th inversion unit is to pass through COM1
The inversion unit of one end marginal position is in the above-mentioned N8 inversion unit of series connection.
Wherein, during Fig. 5 illustrates framework, one end marginal position of the N7 inversion unit 503 after series connection is that residue second is logical
Believe port P0 the 3rd inversion unit, other end marginal position is the first COM1 P1 of residue the 5th inversion unit, and the
The remaining second COM1 P0 of three inversion units is connected with the first COM1 P1 of above-mentioned main control unit 501.After series connection
One end marginal position of N8 inversion unit 504 is the first COM1 P1 of residue the 4th inversion unit, other end margin location
Put be the second COM1 P0 of residue the 6th inversion unit, and the remaining first COM1 P1 of the 4th inversion unit with it is above-mentioned
Second COM1 P0 connections of main control unit 501.
As can be seen that in framework shown in Fig. 5 citings, N9 rectification unit 502 is can not by the control of main control unit 501
Control rectification unit.And in previous embodiment, as shown in Fig. 2-a~Fig. 2-g shown in framework or 2-a~Fig. 2-e citings in framework, one
A little rectification units are the controlled rectification units that can be controlled by main control unit.
Compared with framework shown in Fig. 4-a to be illustrated in above-described embodiment, in framework shown in Fig. 5, the both sides of main control unit 501 can
To dispose at least one inversion unit respectively, and in framework shown in Fig. 4-a, the wherein side of main control unit 301 just deploys at least
Two inversion units.
In some embodiments of the invention, inversion unit, rectification unit, the COM1 of control unit can be optical fiber
COM1 or ethernet communication port or level signal COM1 or Differencing communication interface or other types of communication ends
Mouthful.
Wherein, main control unit 501 can be sent respectively by the first COM1 P1 and the second COM1 P0 command word,
Data word and/or status word etc. are specific to send and process and the foregoing portion such as forwarding to the 3rd inversion unit and the second inversion unit
Split-phase seemingly, will not be repeated here.
As can be seen that the invention provides a kind of multimachine frequency converter, it can realize and machine is synchronous and/or asynchronous fortune
OK, compared with realizing the method for parallel function using multiple frequency converters in the prior art, it will be apparent that reduce cost of implementation；Becoming
With 485 buses in serial communication mode substitution conventional inverter device multi-computer system between the main control unit and inversion unit of frequency device
Communication mode, and then be advantageous to eliminate the defects of transmission signal anti-interference is poor, transmission range is short, it is advantageously implemented anti-interference energy
The strong super teletransmission of power is defeated, and then is advantageous to improve the reliability of frequency converter multiple unit operation scene.Main control unit and inversion list
Interconnection architecture between member is relatively easy, and installation wiring is relatively easy, it is seen that this structure is advantageous to simplify frequency converter multimachine fortune
The wire structures complexity of row scene.Also, due to being connected by COM1 between inversion unit, be so advantageous to improve
The autgmentability of frequency converter multiple unit operation scene, multiple inversion units can be connected by COM1 to meet according to different scenes
Corresponding demand.
Below mainly by taking framework shown in Fig. 5 as an example, some modes that synchronizing signal is produced in multimachine frequency converter are introduced in citing.
The mode of synchronizing signal is produced in multimachine frequency converter under other frameworks to be analogized.
In some embodiments of the invention, the main control unit 501 is used for, and periodically sends and is referred to by the first system
The first system reference clock signal caused by clock；When calculating corresponding with each inversion unit in N10 inversion unit
Between offset, and each inversion unit into the N10 inversion unit sends the corresponding time bias value.
Wherein, each inversion unit in the N10 inversion unit, for receiving the corresponding time
After offset, time migration compensation is carried out to local clock using the time bias value received, will based on phaselocked loop
The first system reference clock signal that the main control unit 501 being currently received is sent compensates it with carrying out time migration
The local clock afterwards carries out step locking, is generated based on clock signal caused by the local clock for synchronous correction
The synchronizing signal of pulse width modulation wave caused by the inversion unit, wherein, the N10 inversion unit includes the N7
Inversion unit and the N8 inversion unit.
Below mainly by taking framework shown in Fig. 5 as an example, some possible modes of the operation control of multimachine frequency converter are introduced in citing.
The operation control method of multimachine frequency converter under other frameworks can analogize.
In some embodiments of the invention, the main control unit 501 is used for, every into the N10 inversion unit
Individual inversion unit sends corresponding pulse width modulation wave critical data；Wherein, the N10 inversion unit includes described
N7 inversion unit and the N8 inversion unit.
Each inversion unit in the N10 inversion unit is used to generate synchronizing signal；Institute is come from based on what is received
The pulse width modulation wave critical data for stating main control unit 501 produces pulse width modulation wave, synchronous using the synchronizing signal
The pulse width modulation wave caused by correction, worked using the pulse width modulation wave motor after synchronous correction.
In the above-described embodiments, the description to each embodiment all emphasizes particularly on different fields, and does not have the portion being described in detail in some embodiment
Point, it may refer to the associated description of other embodiment.
It is apparent to those skilled in the art that for convenience and simplicity of description, the device of foregoing description
Specific work process, may be referred to the corresponding process in preceding method embodiment, will not be repeated here.Provided herein
Several embodiments in, it should be understood that disclosed apparatus and method, can realize by another way.More than for example,
Described device embodiment is only schematical, for example, the division of said units, only a kind of division of logic function,
There can be other dividing mode when actually realizing, such as multiple units or component can combine or be desirably integrated into another
System, or some features can be ignored, or not perform.It is another, shown or discussed mutual coupling or direct coupling
Conjunction or communication connection can be by some ports, the INDIRECT COUPLING or communication connection of device or unit, can be electrical or its
Its form.The above-mentioned unit illustrated as separating component can be or may not be it is physically separate, as unit
The part of display can be or may not be physical location, you can with positioned at a place, or can also be distributed to more
On individual NE.Some or all of unit therein can be selected to realize this embodiment scheme according to the actual needs
Purpose.In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit or each
Individual unit is individually physically present, can also two or more units it is integrated in a unit.Above-mentioned integrated unit was both
It can be realized, can also be realized in the form of SFU software functional unit in the form of hardware.If above-mentioned integrated unit with
The form of SFU software functional unit realize and be used as independent production marketing or in use, can be stored in one it is computer-readable
In storage medium.
Described above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to before
Embodiment is stated the present invention is described in detail, it will be understood by those within the art that：It still can be to preceding
State the technical scheme described in each embodiment to modify, or equivalent substitution is carried out to which part technical characteristic；And these
Modification is replaced, and the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (13)
- A kind of 1. multimachine frequency converter, it is characterised in that including：Main control unit, the N1 execution unit connected by COM1, wherein, the N1 execution unit common DC bus；Wherein, the second of the first COM1 of the main control unit and the first execution unit in the N1 execution unit is logical Believe port connection, wherein, the N1 execution unit includes N11 rectification unit and N12 inversion unit altogether, and the N11 is Positive integer, the N12 are the positive integer more than 1, and first execution unit is that the N1 to be connected by COM1 hold The execution unit of one end marginal position is among row unit.
- 2. multimachine frequency converter according to claim 1, it is characterised in thatFirst communication ends of the second COM1 of the main control unit and the second execution unit in the N1 execution unit Mouth connection, wherein, second execution unit is to be in the other end in the N1 execution unit connected by COM1 The execution unit of marginal position.
- 3. multimachine frequency converter according to claim 1, it is characterised in thatThe multimachine frequency converter also includes the N2 execution unit connected by COM1, and the N2 execution unit is described altogether Dc bus；The 3rd in the N2 execution unit that second COM1 of the main control unit is connected with by COM1 holds The first COM1 connection of row unit, wherein, the N2 be positive integer, the N2 execution unit including rectification unit with/ Or inversion unit, wherein, the 3rd execution unit is that one is in the N2 execution unit connected by COM1 The execution unit of end margin position.
- 4. the multimachine frequency converter according to any one of claims 1 to 3, it is characterised in thatFirst execution unit is inversion unit, and the first COM1 of first execution unit performs list with described N1 The second COM1 connection of the 4th execution unit in member, wherein, the 4th execution unit is rectification unit or inversion list Member；OrFirst execution unit is rectification unit, and the first COM1 of first execution unit performs list with described N1 The second COM1 connection of the 5th execution unit in member, wherein, the 5th execution unit is rectification unit or inversion list Member.
- 5. the multimachine frequency converter according to any one of Claims 1-4, it is characterised in thatThe COM1 is that fiber optic communication port or ethernet communication port or level signal COM1 or Differencing communication connect Mouthful.
- A kind of 6. multimachine frequency converter, it is characterised in that including：Main control unit, the N3 execution unit connected by COM1 and the N4 execution unit connected by COM1；Wherein, the N3 execution unit and the N4 execution unit common DC bus；Wherein, the first COM1 of the main control unit and pass through in the N3 execution unit that COM1 is connected the The second COM1 connection of six execution units, the second COM1 of the main control unit and the institute connected by COM1 State the first COM1 connection of the 7th execution unit in N4 execution unit；Wherein, X1 rectification unit and X2 inversion list are included altogether in the N3 execution unit and the N4 execution unit Member, wherein, the X1 is positive integer, and the X2 is the positive integer more than 1, and the 6th execution unit is to pass through COM1 string The execution unit of one end marginal position is in the N3 execution unit of connection, the 7th execution unit is to pass through communication ends The execution unit of one end marginal position is in the N4 execution unit of mouth series connection.
- 7. multimachine frequency converter according to claim 6, it is characterised in that6th execution unit is rectification unit, and the first COM1 of the 6th execution unit performs list with described N3 The second COM1 connection of the 9th execution unit connection in member, wherein, the 9th execution unit is rectification unit or inverse Become unit；Or；6th execution unit is inversion unit, and the first COM1 of the 6th execution unit performs list with described N3 The second COM1 connection of the 8th execution unit in member, wherein, the 8th execution unit is rectification unit or inversion list Member.
- 8. the multimachine frequency converter according to any one of claim 6 to 7, it is characterised in thatThe COM1 is that fiber optic communication port or ethernet communication port or level signal COM1 or Differencing communication connect Mouthful.
- A kind of 9. multimachine frequency converter, it is characterised in that including：Main control unit, N5 rectification unit, the N6 inversion unit connected by COM1,Wherein, the N5 rectification unit and the N6 inversion unit common DC bus；Wherein, the second of the first COM1 of the main control unit and the first inversion unit in the N6 inversion unit is logical Believe port connection, the N5 is positive integer, the N6 is the positive integer more than 1, and first inversion unit is to pass through communication ends The inversion unit of one end marginal position is among the N6 inversion unit of mouth series connection.
- 10. multimachine frequency converter according to claim 9, it is characterised in thatFirst communication ends of the second COM1 of the main control unit and the second inversion unit in the N6 inversion unit Mouth connection, wherein, second inversion unit is to be in the other end in the N6 inversion unit connected by COM1 The inversion unit of marginal position.
- 11. the multimachine frequency converter according to claim 9 to 10 any one, it is characterised in that the COM1 is light Fiber communication port or ethernet communication port or level signal COM1 or Differencing communication interface.
- A kind of 12. multimachine frequency converter, it is characterised in that including：Main control unit, N9 rectification unit, by COM1 connect N7 inversion unit and pass through COM1 series connection N8 inversion unit；Wherein, direct current is female altogether for the N9 rectification unit, the N7 inversion unit and the N8 inversion unit Line；Wherein, the first COM1 of the main control unit and pass through in the N7 inversion unit that COM1 is connected the The second COM1 connection of one inversion unit, the second COM1 of the main control unit and the institute connected by COM1 State the first COM1 connection of the second inversion unit in N8 inversion unit；Wherein, the N7 and N8 is positive integer, and first inversion unit is the N7 to be connected by COM1 The inversion unit of one end marginal position is in inversion unit, wherein, second inversion unit is to be connected by COM1 The N8 inversion unit in be in one end marginal position inversion unit.
- 13. multimachine frequency converter according to claim 12, it is characterised in thatThe COM1 is that fiber optic communication port or ethernet communication port or level signal COM1 or Differencing communication connect Mouthful.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2014/078968 WO2015180152A1 (en) | 2014-05-30 | 2014-05-30 | Multi-machine frequency converter |
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|---|---|---|---|---|
| JPH07222456A (en) * | 1994-01-31 | 1995-08-18 | Meidensha Corp | Inverter system |
| CN101877541A (en) * | 2009-04-29 | 2010-11-03 | 深圳市英威腾电气股份有限公司 | High-power four-quadrant frequency converter and power unit |
| CN102969906A (en) * | 2012-11-22 | 2013-03-13 | 太原理工大学 | Independent-feeding cascaded high-voltage frequency converter and feeding method thereof |
| CN103257642A (en) * | 2013-04-28 | 2013-08-21 | 深圳市英威腾电气股份有限公司 | Multiple-converter master-slave control system |
| CN103779952A (en) * | 2014-02-20 | 2014-05-07 | 张立伟 | Solar power supply and power generation integrated variable frequency system |
-
2014
- 2014-05-30 CN CN201480019864.6A patent/CN105431792B/en active Active
- 2014-05-30 WO PCT/CN2014/078968 patent/WO2015180152A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07222456A (en) * | 1994-01-31 | 1995-08-18 | Meidensha Corp | Inverter system |
| CN101877541A (en) * | 2009-04-29 | 2010-11-03 | 深圳市英威腾电气股份有限公司 | High-power four-quadrant frequency converter and power unit |
| CN102969906A (en) * | 2012-11-22 | 2013-03-13 | 太原理工大学 | Independent-feeding cascaded high-voltage frequency converter and feeding method thereof |
| CN103257642A (en) * | 2013-04-28 | 2013-08-21 | 深圳市英威腾电气股份有限公司 | Multiple-converter master-slave control system |
| CN103779952A (en) * | 2014-02-20 | 2014-05-07 | 张立伟 | Solar power supply and power generation integrated variable frequency system |
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