CN206412941U - A kind of frequency converter parallel operation control system - Google Patents
A kind of frequency converter parallel operation control system Download PDFInfo
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- CN206412941U CN206412941U CN201621463043.4U CN201621463043U CN206412941U CN 206412941 U CN206412941 U CN 206412941U CN 201621463043 U CN201621463043 U CN 201621463043U CN 206412941 U CN206412941 U CN 206412941U
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Abstract
The utility model embodiment discloses a kind of frequency converter parallel operation control system, including：The individual three-phase alternating currents for being used to input in power network of n are converted into the commutation inversion module of the three-phase alternating current of predeterminated frequency, and n is the integer more than 1, and each commutation inversion module is equipped with corresponding driver element；Connected one to one with the driver element of each commutation inversion module, send driving control signal to corresponding driver element and obtain the driving interface unit of the detection signal of corresponding commutation inversion module；It is connected with each driving interface unit, be processed as respective feedback signal for collecting the detection signal that each driving interface unit is obtained, and synthesizing and machine relay unit；It is connected with simultaneously machine relay unit, according to feedback signal and the control signal of extraneous input, generates the control unit of driving control signal.Both multiple frequency converters had been realized and machine is expanded, the requirement of power output is reached, can guarantee that driving is synchronous again, reduce cost.
Description
Technical field
The utility model is related to converter technology field, more particularly to a kind of frequency converter parallel operation control system.
Background technology
In application of frequency converter, when single inverter power output is unable to reach demanded power output, it is necessary to multiple
Simultaneously machine handles the function of realizing high-power output to converter unit.Simultaneously the common method of machine processing uses following scheme at present：
Synchronous, resynchronisation transmission drive signal is realized between the control unit of each inversion unit by carrier signal, with
Exemplified by two inversion units and machine, the control unit (being main control unit) of an inversion unit, by send carrier signal with it is another
The control unit (be from control unit) of one inversion unit realizes that synchronizing signal confirms, then main control unit with from control unit
The respective inversion unit drive control pulse of synchronized transmission, realize two inversion units and machine synchronism output.But the program
Extension is difficult, equal number of control unit is needed when needing multiple inversion units and machine, system complex and whard to control, into
This is higher, and can not realize that the driving between sharing control, each inversion unit may synchronously have problem.
Therefore, multiple frequency converters how can be realized and machine is expanded, the requirement of power output is reached, can guarantee that driving is same again
Step, reduces cost, is the current technical issues that need to address of those skilled in the art.
Utility model content
The purpose of this utility model is to provide a kind of frequency converter parallel operation control system, can realize multiple frequency converters simultaneously
Machine is expanded, and reaches the requirement of power output, be can guarantee that driving is synchronous again, is reduced cost.
In order to solve the above technical problems, the utility model provides following technical scheme：
A kind of frequency converter parallel operation control system, including：The n three-phase alternating currents for being used to input in power network are converted into default frequency
The commutation inversion module of the three-phase alternating current of rate, n is the integer more than 1, and each commutation inversion module is equipped with corresponding drive
Moving cell；Connected one to one with the driver element of each commutation inversion module, driving control is sent to corresponding driver element
Signal processed and the driving interface unit for detecting signal for obtaining corresponding commutation inversion module；With each driving interface unit
Connection, be processed as respective feedback signal for collecting the detection signal that each driving interface unit is obtained, and synthesizing and machine
Relay unit；It is connected with described and machine relay unit, according to the feedback signal and the control signal of extraneous input, generation is described
The control unit of driving control signal.
Preferably, each driving interface unit is plugged on described and machine relay unit.
Preferably, the driving interface unit is optical fiber driving interface unit, and each optical fiber driving interface unit passes through
Optical fiber and the connection of corresponding driver element.
Preferably, the commutation inversion module includes：The driver element, the inversion list being connected with the driver element of itself
Member, the rectification unit being connected with the inversion unit.
Preferably, the commutation inversion module also includes：It is arranged on the storage between the inversion unit of itself and rectification unit
Can unit.
Preferably, described control unit includes dsp chip, described and machine relay unit and dsp chip connection.
Compared with prior art, above-mentioned technical proposal has advantages below：
A kind of frequency converter parallel operation control system that the utility model embodiment is provided, including：N are used to input in power network
Three-phase alternating current be converted into predeterminated frequency three-phase alternating current commutation inversion module, n is integer more than 1, and each rectification is inverse
Become module and be equipped with corresponding driver element；Connect one to one, driven to corresponding with the driver element of each commutation inversion module
Moving cell sends driving control signal and obtains the driving interface unit of the detection signal of corresponding commutation inversion module；With it is each
Driving interface unit is connected, and respective feedback letter is processed as collecting the detection signal that each driving interface unit is obtained, and synthesizing
Number and machine relay unit；It is connected with simultaneously machine relay unit, according to feedback signal and the control signal of extraneous input, generation drives
The control unit of control signal., can be adaptively and machine quantity different and machine relay unit is equipped with multiple driving interface units
It is convenient to expand on demand and machine quantity uses same and machine relay unit.And machine relay unit is by each driving interface unit
Detection signal carries out the corresponding feedback signal of synthesis processing generation and is sent to control unit, feedback control is carried out, without using
FPGA or CPLD chips etc. remove expansion I/O mouthful, save hardware cost, also ensure that the synchronized transmission of drive signal.Both realized
Multiple frequency converters and machine expansion, reach the requirement of power output, can guarantee that driving is synchronous again, reduce cost.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are these
Some embodiments of utility model, for those of ordinary skill in the art, on the premise of not paying creative work, also
Other accompanying drawings can be obtained according to these accompanying drawings.
The frequency converter parallel operation control system structural representation that Fig. 1 is provided by a kind of embodiment of the utility model.
Embodiment
Core of the present utility model is to provide a kind of frequency converter parallel operation control system, can realize multiple frequency converters simultaneously
Machine is expanded, and reaches the requirement of power output, be can guarantee that driving is synchronous again, is reduced cost.
In order that above-mentioned purpose of the present utility model, feature and advantage can become apparent it is understandable, it is right below in conjunction with the accompanying drawings
Embodiment of the present utility model is described in detail.
Detail is elaborated in the following description to fully understand the utility model.But the utility model can
It is different from other manner described here with a variety of and implements, those skilled in the art can be without prejudice to the utility model intension
In the case of do similar popularization.Therefore the utility model is not limited by following public embodiment.
It refer to Fig. 1, the frequency converter parallel operation control system knot that Fig. 1 is provided by a kind of embodiment of the utility model
Structure schematic diagram.
A kind of embodiment of the present utility model provides a kind of frequency converter parallel operation control system, including：N are used for
The three-phase alternating current that power network is inputted is converted into the commutation inversion module of the three-phase alternating current of predeterminated frequency, and n is whole more than 1
Number, each commutation inversion module is equipped with corresponding driver element；Connected one to one with the driver element of each commutation inversion module,
The driving for sending driving control signal to corresponding driver element and obtaining the detection signal of corresponding commutation inversion module connects
Mouth unit, the detection signal includes voltage, electric current, module temperature, relay and fan control signal lamp；With each driving interface list
Member connection, for collect the detection signal that each driving interface unit is obtained, and synthesize be processed as respective feedback signal and in machine
Turn unit；It is connected with simultaneously machine relay unit, according to feedback signal and the control signal of extraneous input, generation driving control signal
Control unit.Further, commutation inversion module includes：Driver element, the inversion unit being connected with the driver element of itself, with
The rectification unit of inversion unit connection.Commutation inversion module also includes：Be arranged on the inversion unit and rectification unit of itself it
Between energy-storage units.
In the present embodiment, by and three commutation inversion modules of machine exemplified by illustrate.I.e. the system includes three
Individual commutation inversion module, is respectively defined as the first commutation inversion module 11, the second commutation inversion module 12 and the 3rd commutation inversion
It is respectively the first driver element 111, the second driving that correspondence driver element is respectively arranged with module 13, three commutation inversion modules
The driver element 131 of unit 121 and the 3rd.First driver element 111 and the first driving interface unit 21 are connected, the second driver element
121 and second driving interface unit 22 connect, the 3rd driver element 131 and the 3rd driving interface unit 23 are connected.Each driving connects
Mouth unit is connected with simultaneously machine relay unit 3, and machine relay unit 3 and control unit 4 are connected.
The first inversion unit 112 and the first driver element 111 in first rectification module 11 are connected, first energy-storage units
113 and first inversion unit 112 connect, the first rectification unit 114 and first energy-storage units 113 are connected；
The second inversion unit 122 and the second driver element 121 in second rectification module 12 are connected, second energy-storage units
123 and second inversion unit 122 connect, the second rectification unit 124 and second energy-storage units 123 are connected；
The 3rd inversion unit 132 and the 3rd driver element 131 in 3rd rectification module 13 are connected, the 3rd energy-storage units
133 and the 3rd inversion unit 132 connect, the 3rd rectification unit 134 and the 3rd energy-storage units 133 are connected.
, can adaptively and machine quantity and machine relay unit is equipped with multiple driving interface units, different and machine quantity makes
It is convenient to expand on demand with same and machine relay unit.And machine relay unit enters the detection signal of each driving interface unit
The corresponding feedback signal of row synthesis processing generation is sent to control unit, feedback control is carried out, without using FPGA or CPLD cores
Piece etc. removes expansion I/O mouthful, saves hardware cost, also ensure that the synchronized transmission of drive signal.Control unit generates drive control
Signal is sent to each driving interface unit by simultaneously machine relay unit, and each driving interface unit sends the driving control signal extremely
Each driver element is to control being turned on and off for each commutation inversion module.Both multiple frequency converters had been realized and machine is expanded, had been reached defeated
Go out the requirement of power, can guarantee that driving is synchronous again, reduce cost.
In a kind of embodiment of the present utility model, each driving interface unit is plugged on and on machine relay unit.Driving
Interface unit is optical fiber driving interface unit, and each optical fiber driving interface unit is connected by optical fiber and corresponding driver element.Control
Unit processed includes dsp chip, and machine relay unit and dsp chip connection.
In the present embodiment, each optical fiber driving interface unit is consistent with the commutation inversion module number of simultaneously machine, is driven with each
Moving cell is connected by optical fiber, and the detection transmitted driving control signal with optical fiber and monitor correspondence and machine commutation inversion module is believed
Number, each optical fiber driving interface unit is directly plugged on and on machine relay unit, is carried out instead for transmitting the detection signal monitored
Feedback control, while driving control signal is sent into each optical fiber driving interface unit, control commutation inversion module conducting and
Close.I.e. and machine relay unit is control unit and the bridge of each and machine commutation inversion module, it can support n optical fiber to drive
Mobile interface unit, that is, extend n and machine commutation inversion module, save the I/O mouths of the dsp chip in control unit.Wherein, light
Fine driving interface unit is connected with each driver element by optical fiber, and it is directly plugged on and on machine relay unit, easy to connect, section
Power saving gas line it is cumbersome, while without fpga chip on optical fiber driving interface unit, can save cost and prevent because
The nonsynchronous phenomenon of drive signal that FPGA is caused when decoding.
In summary, the frequency converter parallel operation control system that the utility model embodiment is provided, be able to can be realized multiple
Frequency converter and machine expansion, reach the requirement of power output, can guarantee that driving is synchronous again, reduce cost.
A kind of frequency converter parallel operation control system is provided the utility model above to be described in detail.It is used herein
Specific case is set forth to principle of the present utility model and embodiment, and the explanation of above example is only intended to help
Understand core concept of the present utility model.It should be pointed out that for those skilled in the art, not departing from this
On the premise of utility model principle, some improvement and modification can also be carried out to the utility model, these are improved and modification also falls
Enter in the utility model scope of the claims.
Claims (6)
1. a kind of frequency converter parallel operation control system, it is characterised in that including：The n three-phase alternating currents for being used to input in power network turn
The commutation inversion module of the three-phase alternating current of predeterminated frequency is turned to, n is the integer more than 1, and each commutation inversion module is all provided with
There is corresponding driver element；Connected one to one with the driver element of each commutation inversion module, to corresponding driver element
Send driving control signal and obtain the driving interface unit of the detection signal of corresponding commutation inversion module；With each drive
Mobile interface unit is connected, and respective feedback is processed as collecting the detection signal that each driving interface unit is obtained, and synthesizing
Signal and machine relay unit；It is connected, is believed according to the control of the feedback signal and extraneous input with described and machine relay unit
Number, generate the control unit of the driving control signal.
2. system according to claim 1, it is characterised in that each driving interface unit is plugged on described and machine transfer
On unit.
3. system according to claim 2, it is characterised in that the driving interface unit is optical fiber driving interface unit,
Each optical fiber driving interface unit is connected by optical fiber and corresponding driver element.
4. system according to claim 3, it is characterised in that the commutation inversion module includes：The driver element, with
The inversion unit of the driver element connection of itself, the rectification unit being connected with the inversion unit.
5. system according to claim 4, it is characterised in that the commutation inversion module also includes：It is arranged on itself
Energy-storage units between inversion unit and rectification unit.
6. the system according to any one of claim 1 to 5, it is characterised in that described control unit includes dsp chip, institute
State and machine relay unit and dsp chip connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621463043.4U CN206412941U (en) | 2016-12-28 | 2016-12-28 | A kind of frequency converter parallel operation control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621463043.4U CN206412941U (en) | 2016-12-28 | 2016-12-28 | A kind of frequency converter parallel operation control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206412941U true CN206412941U (en) | 2017-08-15 |
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ID=59552753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621463043.4U Active CN206412941U (en) | 2016-12-28 | 2016-12-28 | A kind of frequency converter parallel operation control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206412941U (en) |
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2016
- 2016-12-28 CN CN201621463043.4U patent/CN206412941U/en active Active
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