CN104811016B - Power-converting device, control loop and electric system - Google Patents
Power-converting device, control loop and electric system Download PDFInfo
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- CN104811016B CN104811016B CN201410043729.7A CN201410043729A CN104811016B CN 104811016 B CN104811016 B CN 104811016B CN 201410043729 A CN201410043729 A CN 201410043729A CN 104811016 B CN104811016 B CN 104811016B
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Abstract
The present invention relates to the control technology of power equipment more particularly to a kind of control technologies of power-converting device.To realize the integral structure of power converter controller and power converter, providing a kind of power-converting device, control loop and electric system, power-converting device includes：The power converter controller and power converter connected by interface circuit, wherein：The power converter controller receives external control signal, and sends external control instruction to the power converter according to the external control signal；The power converter executes the external control instruction.Above-mentioned power converter controller and power converter provided by the invention realize integral structure, so as to set required communication protocol between power converter controller and power converter, it is not necessary to defer to fieldbus communication protocol.
Description
Technical field
The present invention relates to the control technology of power equipment more particularly to a kind of control technologies of power-converting device.
Background technology
Power converter is converted to power parameter, such as the size of voltage or electric current, waveform and frequency, realizes electricity
The circuit of force transformation is widely used in power transformation circuit or power converter in various electric system.These electric power become
Parallel operation, such as can be with electric rotating machine（Motor or engine）Connection, to control the rotation of electric rotating machine.
The basic composition of power converter includes major loop and communication plug-in unit, and control loop controls major loop, communication plug-in unit
It is connected with control loop.
Power converter needs to receive the control from external control signal in various electric system, in the prior art, if
Power converter controller is set to receive external control signal and be transmitted to power converter to be controlled.Communication plug-in unit passes through
Fieldbus and power converter controller communication connection, are responsible for the control loop and power converter controller of power converter
Between communication.
It is connected with fieldbus by communication plug-in unit between existing control loop and power converter controller, needs to defer to
Fieldbus communication protocol, and since it is desired that in communication plug-in unit then cause the failure rate of communication higher.
Invention content
Embodiment of the present invention is to realize the integral structure of power converter controller and power converter, provides one kind
Power-converting device.
For this purpose, there is provided a kind of power-converting devices for the one side of embodiment of the present invention, including：Pass through interface electricity
The power converter controller and power converter of road connection, wherein：
The power converter controller receives external control signal, and according to the external control signal to the electric power
Converter sends external control instruction；
The power converter executes the external control instruction.
Above-mentioned power converter controller and power converter provided by the invention realize integral structure, so as to make
It is communicated according to the private communication protocol other than fieldbus communication protocol between power converter controller and power converter, no
Fieldbus communication protocol must be deferred to.Also, due to carrying out transfer without going through communication plug-in unit, communication failure can be reduced
Probability.
In mode of the embodiment of the present invention, the power converter includes major loop and control loop, the control loop, institute
It states control loop and power converter controller is connected by interface circuit, the outside is received from the power converter controller
Control instruction, and execute the external control instruction.
The another aspect of embodiment of the present invention, the control loop after the power is turned on, are confirming following two conditions all every time
Start to execute the handshake procedure between the power converter controller when meeting, described two conditions are：It completes to described
Power converter controller sends out enable signal and completes to receive the enable signal of the power converter controller.
So can be according to the enabled state time of power converter controller, flexibly control enables confirmation process,
The applicability for improving power-converting device also improves and establishes communication between power converter controller and power converter
Success rate.
The another aspect of embodiment of the present invention provides a kind of electricity with power converter controller error judgment mechanism
Force conversion system, the control loop do not receive the power converter when reaching the stand-by period of the timing since when powering on
The enable signal of device controller then confirms the power converter controller error.
To further increase the adaptability of power-converting device, a configurable parameter can will be set as the stand-by period,
The time value or the characterization waiting time that can be configured as being determined according to application environment are infinitely great specific coding.
Wherein, in the above embodiment of the present invention, the power converter controller is received outer by field bus communication
Portion controls signal, and external control instruction is sent to the power converter by non-at-scene bus communication.The control loop with
After the power converter controller is synchronous with clock, start to execute shaking hands between the power converter controller
Journey.
The present invention also based on above-mentioned power-converting device, provides a kind of electric system, including：Above-mentioned any type electricity
Force conversion system；And the electric rotating machine by power-converting device control rotation.
Based on power-converting device provided by the invention, the another further aspect of embodiment of the present invention also provides a kind of electric power change
The control method of parallel operation, including：
The external control instruction from power converter controller is received by interface circuit, the external control instruction is
The instruction that the power converter controller is sent according to external control signal；The master is controlled according to the external control instruction
The operation in circuit.
In turn, which further includes：Start to execute when following two conditions all meet every time after the power is turned on, confirming and
Handshake procedure between the power converter controller, described two conditions are：It completes to the power converter controller
Enable signal is sent out, and completes to receive the enable signal of the power converter controller.
Further, which further includes：Institute is not received when reaching the stand-by period of the timing since when powering on
The enable signal for stating power converter controller confirms the power converter controller error.
Based on above-mentioned power converter control method, a kind of control loop of power converter is also provided, there is following work(
It can module：
Receiving part, it is described outer for receiving the external control instruction from power converter controller by interface circuit
Portion's control instruction is the instruction that the power converter controller is sent according to external control signal；
Enforcement division, the operation for controlling the major loop according to the external control instruction.
The control loop of further power converter further includes：Confirmation portion, for after the power is turned on, confirming following every time
Two conditions start to execute the handshake procedure between the power converter controller when all meeting, and described two conditions are：
Enable signal is sent out to the power converter controller and receives the enable signal of the power converter controller.Further
There can also be judging part, for not receiving the power converter control in the stand-by period arrival of the timing since when powering on
The enable signal of device processed then confirms the power converter controller error.
In conclusion power-converting device provided in an embodiment of the present invention, realizes power converter controller and electric power
The integration of converter.
Description of the drawings
Fig. 1 is power-converting device principle schematic diagram provided in an embodiment of the present invention；
Fig. 2 passes through communication plug-in unit and scene as comparison other between power converter controller and power converter
The structural schematic diagram of bus communication connection；
Fig. 3 is a kind of concrete structure principle schematic of power-converting device provided in an embodiment of the present invention；
Fig. 4 a and Fig. 4 b are power converter controller and control electricity in power-converting device provided in an embodiment of the present invention
Enabled state confirms the timing control schematic diagram of process between road；
Fig. 5 is another concrete structure principle schematic of power-converting device provided in an embodiment of the present invention；
Fig. 6 is the enabled control flow schematic diagram of control circuit in power-converting device provided in an embodiment of the present invention；
Fig. 7 is the function structure schematic diagram of control circuit in power-converting device provided in an embodiment of the present invention.
Reference sign：
Power converter 11,21,31,31 '
Power-converting device 10,30,30 '
Power converter controller 12,22,32
Major loop part 211,311
Control loop part 212,312,312 '
Interface circuit 13,33
Communication plug-in unit 213
Specific implementation mode
Referring to the drawings, embodiments of the present invention are explained in detail.
As shown in Figure 1, being a kind of power-converting device 10 provided in an embodiment of the present invention, to realize power converter and electricity
The integration of force transducer controller, in power-converting device 10 shown in Fig. 1, by power converter 11 and power converter
Controller 12 is connected by interface circuit 13, wherein：Power converter controller 12 receives external control signal, is controlled according to outside
Signal processed sends external control instruction to power converter 11, and power converter 11 executes the external control instruction received.Electricity
Force conversion system 10, such as can be with electric rotating machine（Motor or generator）It is connected, to control the rotation of electric rotating machine, constitutes
Electric system.At this point, electric system includes power-converting device 10 and electric rotating machine.In addition, electric system, such as may be
Elevator device including power-converting device 10 and electric rotating machine.
In the power system, external control signal is generally sent out by an operation panel, power converter controller 12
Can be by fieldbus attended operation panel, external control signal is by operation panel to the communication of power converter controller 12
The communication protocol of fieldbus is deferred to, and in power-converting device 10 between power converter 11 and power converter controller 12
Internal directly communicated by interface circuit is connected, and need not defer to the communication protocol on fieldbus, can be neatly in accordance with certainly
Except the fieldbus of row setting（Non-at-scene bus）Communication protocol is communicated.From the point of view of hardware configuration, using interface electricity
Road 13, power converter 11 and power converter controller 12, such as it is plugged on the two of interface circuit respectively using two sockets
End, interface circuit 13 is such as can pass through the hardware knot of not responsible communication circuit on printed circuit board or connector, wiring
Structure is realized.If on the printed circuit board other than wiring circuit or connector constitute interface circuit when, can reduce by
The faulty operation caused by the noise of wiring carrying.Therefore in the prior art by field bus communication connect in the way of, this
Kind is responsible in such a way that interface circuit 13 communicates to connect due to no between power converter and power converter controller
The communication plug-in unit of communication, therefore the generation probability of communication failure can be reduced.
For the ease of understanding, Fig. 2 shows power converters and individual transform device controller to be respectively set, including communication is inserted
The basic structure schematic diagram of the power converter of part.As shown in Fig. 2, power converter 21 includes major loop part 211, controls back
Road part 212 and communication plug-in unit 213, wherein control loop part 212 are for controlling major loop part 211, communication plug-in unit 213
It is connected with control loop part 212, is connect by field bus communication between power converter controller 22, is responsible for controlling back
Communication between road part 212 and power converter controller 22.Therefore control loop part 212 and power converter controller
Communication between 22 must comply with field bus protocol.
As shown in figure 3, being a kind of power-converting device 30 provided in an embodiment of the present invention, power converter 31 1 therein
As include major loop part 311 and control loop part 312, control loop part 312 controls major loop part 311 and carries out electric power
Transformation, power converter controller 32 are exactly based on interface circuit 33 and are communicatively coupled with control loop part 312, controlled back
Control element of the road part 312 as power converter receives outside by interface circuit 33 from power converter controller 32
Control instruction and the power converter that major loop part 311 is controlled according to external control instruction.Control loop part 312 generally comprises
Embeded processor and some interlock circuits, interlock circuit include driving circuit, control circuit and the protection of major loop part
Circuit etc. further includes radiating element etc. such as power circuit and fan.
Shown in Fig. 3, such as in a common elevator control system, power converter 31 can be to hand over alternation
Frequency device, matrix rectifier are exported after the voltage progress frequency conversion provided AC network according to the operating mode of setting and are transported to elevator
Capable motor.By taking once-through operation as an example, when elevator is parked in 1 layer, user is up to 5 layers using lift operation panel instruction,
It is up to 5 layers of operation signal and power converter controller 32, electricity is reached by fieldbus as an external control signal
The communication protocol set between 32 basis of force transducer controller and control loop part 312 is generated based on external control signal
One external control instruction is simultaneously sent to control loop part 312, and control loop part 312 controls according to external control instruction and leads
The operation of loop feature.In the same manner as embodiment shown in FIG. 1, the control loop part 312 due to power converter 31 and electricity
Field bus protocol need not be deferred between force transducer controller 32, therefore how external control is generated based on external control signal
System instruction then can very flexibly, such as can be one and be encoded with 5 layers of corresponding instruction are up to.Control loop part
Communication mode is set as it is known to those skilled in the art that here only with one between 312 and power converter controller 32
It is illustrated for control process, does not limit protection scope of the present invention.
To ensure to establish communication, control loop part 312 between control loop part 312 and power converter controller 32
With power converter controller 32 respectively after powering on every time and confirming and itself enter the enabled state that can communicate, into row clock
It is synchronous, and send enable signal to other side and inform that state, both sides judge that other side is logical in that can establish according to respective enable signal
After the enabled state of letter, start to execute the handshake procedure before communication, this process before handshake procedure is properly termed as enabled shape
State confirms process.
As shown in Figs. 4a and 4b, it is that control loop part 312 and power converter controller 32 exist in the embodiment of the present invention
The communication sequential that enabled state confirms process is executed, after the power is turned on, control loop part 312 confirms to be in and can establish power converter
After the enabled state of communication, enable signal e is sent by interface circuit 331, power converter controller 32 confirms after the power-up
After the enabled state that can establish communication, enable signal e is sent by interface circuit 332, since the two is from powering on to enabling
Time needed for state identical may may also differ, therefore such as Fig. 4 a, enable signal e1Prior to e2It sends out.Such as
Shown in Fig. 4 b, enable signal e1It is later than e2It sends out.As long as but enable signal e1And e2It all has been sent from and is received by other side,
Then meaning can be in T1Or T2Moment starts to execute handshake procedure.For control loop part 312, if itself
Enable signal e1Prior to e2It sends out, is then finishing receiving enable signal e2T1Moment starts to execute handshake procedure.If itself
Enable signal e1Receiving enable signal e2After send out, then be sent completely enable signal e1T2Moment, which starts to execute, shakes hands
Process.Enable signal e1And e2The high level or low level that can be due up, handshake procedure are also a series of by sending mutually
The square wave for arranging width and frequency is completed, and handshake procedure needs start after clock synchronizes, and both sides enter after handshake procedure
Normal communication process, these are well known to those skilled in the art, and are not described in detail.
Therefore, as long as confirm that following two conditions all meet for control loop part 312, so that it may to start to execute and
Handshake procedure between power converter controller 32, the two conditions are：Completing to send out to power converter controller 32 makes
Energy signal and the enable signal for completing to receive power converter controller 32.It is also same for power converter controller 32.
So can be according to different application environment, the enabled state time needed for power converter controller 32, flexibly control makes
Energy state confirmation process, improves the applicability of power-converting device.
As shown in figure 5, for the structural schematic diagram of another power-converting device 30 ' provided in an embodiment of the present invention, according to
Shown in Fig. 5, the embodiment of the present invention can also be established in control loop part 312 ' power converter controller 32 go out misjudgement
Off line system can set an enable signal e in control loop part 312 '2High latency, with judge electric power become
Whether permuter controller 32 malfunctions, the T at the time of stand-by period can be from when powering on0It rises and starts timing, control loop part 312 '
When reaching the stand-by period of setting, the enable signal e of power converter controller 32 is not received2Then confirm power converter control
Device 32 processed malfunctions, and control loop part 312 ' can take the measures such as alarm after confirming that power converter controller 32 malfunctions.
The monitoring of high latency, it may be convenient to it is realized using the timer being triggered while power-converting device powers on,
It is implemented as it is known to those skilled in the art that being no longer described in detail here.
Due in different application systems, power converter controller 32 differs from powering on to the time needed for enabled state
Sample, in the embodiment of the present invention, the stand-by period can be configured as a configurable parameter, in some cases, the stand-by period
It can be configured as a determining time value, such as 30min, 600min etc., if necessary to even be configurable to infinity, i.e.,
Control loop part 312 ' can be in unlimited time waiting power converter controller 32, until power converter controller 32 prepare
It is ready to send out enable signal.In the concrete realization, the specific coding that infinitely great parameter can be arranged with one characterizes, such as 0,
Or other codings.Control loop part 312 ' after the power is turned on, needs to read various operating parameters, configurable parameter is as one of them
It can be prestored in specified memory space.In practical applications, change the configuration parameter if necessary, then change this and refer to
Determine the parameter value of the storage in space.When the stand-by period is as a configurable parameter, it can fully consider that electric power becomes
Permuter controller enabled state in different application environment prepares required maximum duration, to avoid being arranged the fixed stand-by period
And communication failure caused by possibility, further improve the adaptability of power-converting device provided in an embodiment of the present invention.
In the embodiment of the present invention, since power converter controller and power converter are integrated into a power converter
It in device, is communicated to connect by communication interface therebetween, therefore the clock for needing not rely on external fieldbus synchronizes, as long as
Therebetween keeping clock to synchronize can complete to communicate.And then since the two can be with the private communication other than use site bus
Agreement, the then confidentiality of the information such as safety and data that can improve communication by the way that some parameters for authentication are arranged.
The power converter mentioned in the embodiment of the present invention may include frequency converter and inverter, and wherein frequency converter can wrap
Include AC-AC frequency converter, AC and DC hybrid transmission system, matrix rectifier etc..
As shown in fig. 6, being implemented in the above-mentioned power-converting device provided according to the present invention, the enabled control of control loop part
Process processed includes mainly following key step：
Step S601, judge whether itself enters enabled state, if it is S602 is thened follow the steps, otherwise continue to judge certainly
Whether body enters enabled state；
Step S602, enable signal is sent to power converter controller；
Step S603, judge whether to receive the enable signal from power converter controller, if thened follow the steps
S604 starts handshake procedure, and enabled state confirms that process terminates, no to then follow the steps S605；
Step S605, judge whether the stand-by period reaches, confirm power converter control if it is S606 is thened follow the steps
Device malfunctions, and otherwise return to step S603 continues waiting for the enable signal of power converter controller.
Step S603 can also be executed prior to step S601, finally every time after the power is turned on, as long as confirming following two conditions
When all meeting, obtain and power converter controller between clock synchronize, and start execute and power converter controller it
Between handshake procedure, two conditions are：It completes to send out enable signal to power converter controller and completion receives power converter
The enable signal of device controller.
After handshake procedure, power converter controller is received by interface circuit from power converter controller
External control instruction and the operation that major loop part is controlled according to external control instruction.
As shown in fig. 7, to realize above-mentioned control, control loop part needs to have following function part：
Receiving part 701, it is external for receiving the external control instruction from power converter controller by interface circuit
Control instruction is the instruction that power converter controller is sent according to external control signal；
Enforcement division 702, the operation for controlling major loop part according to external control instruction.
Confirmation portion 703 when confirming that following two conditions all meet, obtains and power converter for every time after the power is turned on
Clock between controller synchronizes, and starts to execute the handshake procedure between power converter controller, and two conditions are：It is complete
At sending out enable signal to power converter controller and complete to receive the enable signal of power converter controller.
Judging part 704, for not receiving power converter control in the stand-by period arrival of the timing since when powering on
The enable signal of device confirms power converter controller error.
In conclusion power-converting device provided in an embodiment of the present invention, realizes power converter controller and electric power
The integration of converter, it is further provided enabled state confirm flow, improve both sides establish communication success rate.
The specific implementation of the present invention is described in detail above by reference to attached drawing, it is clear that those skilled in the art
Various changes and modifications can be made to the invention by member without departing from the spirit and scope of the present invention.If in this way, the present invention
Within the scope of the claims of the present invention and its equivalent technology, then the present invention is also intended to include these these modifications and variations
Including modification and variation.
Claims (7)
1. a kind of power-converting device, which is characterized in that including：The power converter controller and electricity connected by interface circuit
Force transducer, wherein：
The power converter controller receives external control signal, and according to the external control signal to the power converter
Device sends external control instruction；
The power converter executes the external control instruction,
The interface circuit passes through the hardware configuration for being used as not responsible communication on printed circuit board circuit or connector are matched
Line realizes,
The power converter controller by field bus communication receive external control signal, by non-at-scene bus communication to
The power converter sends external control instruction,
The power converter includes major loop part and control loop part, and the control loop part is connected by interface circuit
Power converter controller is connect, receives the external control instruction from the power converter controller, and according to the outside
Control instruction controls the major loop part,
After the control loop part is synchronous with the power converter controller and clock, start to execute and the power converter
Handshake procedure between device controller, both sides enter normal communication process after handshake procedure.
2. power-converting device as described in claim 1, which is characterized in that the control loop part every time after the power is turned on,
Confirm and starts to execute the handshake procedure between the power converter controller when following two conditions all meet, it is described two
Condition is：It completes to send out enable signal to the power converter controller and completes to receive the power converter controller
Enable signal.
3. power-converting device as claimed in claim 2, which is characterized in that the control loop part is since when powering on
When the stand-by period of timing reaches, the enable signal for not receiving the power converter controller then confirms the power converter
Controller malfunctions.
4. power-converting device as claimed in claim 3, which is characterized in that the stand-by period is a configurable parameter,
The time value or the characterization stand-by period that can be configured to determine that are infinitely great specific coding.
5. a kind of electric system, including：
Power-converting device recorded in claim 1；And
Pass through the electric rotating machine of power-converting device control rotation.
6. a kind of control method of power converter, which is characterized in that including：
The external control instruction from power converter controller is received by interface circuit, the external control instruction is described
The instruction that power converter controller is sent according to external control signal；
The operation of major loop part is controlled according to the external control instruction,
The interface circuit passes through the hardware configuration for being used as not responsible communication on printed circuit board circuit or connector are matched
Line realizes that the power converter controller receives external control signal by field bus communication, passes through non-at-scene bus
It communicates to the power converter and sends external control instruction,
The power converter includes major loop part and control loop part, and the control loop part is connected by interface circuit
Power converter controller is connect, receives the external control instruction from the power converter controller, and according to the outside
Control instruction controls the major loop part,
After the control loop part is synchronous with the power converter controller and clock, start to execute and the power converter
Handshake procedure between device controller, both sides enter normal communication process after handshake procedure.
7. a kind of control loop part of power converter, which is characterized in that including：
Receiving part, for receiving the external control instruction from power converter controller, the external control by interface circuit
System instruction is the instruction that the power converter controller is sent according to external control signal；
Enforcement division, the operation for controlling major loop part according to the external control instruction,
The interface circuit passes through the hardware configuration for being used as not responsible communication on printed circuit board circuit or connector are matched
Line realizes,
The power converter controller by field bus communication receive external control signal, by non-at-scene bus communication to
The power converter sends external control instruction,
The power converter includes major loop part and control loop part, and the control loop part is connected by interface circuit
Power converter controller is connect, receives the external control instruction from the power converter controller, and according to the outside
Control instruction controls the major loop part,
After the control loop part is synchronous with the power converter controller and clock, start to execute and the power converter
Handshake procedure between device controller, both sides enter normal communication process after handshake procedure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410043729.7A CN104811016B (en) | 2014-01-29 | 2014-01-29 | Power-converting device, control loop and electric system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410043729.7A CN104811016B (en) | 2014-01-29 | 2014-01-29 | Power-converting device, control loop and electric system |
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| Publication Number | Publication Date |
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| CN104811016A CN104811016A (en) | 2015-07-29 |
| CN104811016B true CN104811016B (en) | 2018-07-17 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10191646A (en) * | 1996-12-26 | 1998-07-21 | Hitachi Ltd | Inverter device |
| CN1418762A (en) * | 2002-12-16 | 2003-05-21 | 北京航空航天大学 | Multiple axes servo motion control device |
| CN2772130Y (en) * | 2005-03-18 | 2006-04-12 | 中国科学院自动化研究所 | Asymmetrical high-speed half-duplex communication device |
| CN101727430B (en) * | 2009-11-11 | 2012-06-06 | 中兴通讯股份有限公司 | Method and device for hot plug of card |
| US8575882B2 (en) * | 2010-07-16 | 2013-11-05 | Rockwell Automation Technologies, Inc. | Power layer generation of inverter gate drive signals |
| CN101969268B (en) * | 2010-10-14 | 2012-09-19 | 北方联合电力有限责任公司 | Wind driven generator control system |
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