CN104811016A - Electric power conversion device, control loop and electrical power system - Google Patents
Electric power conversion device, control loop and electrical power system Download PDFInfo
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- CN104811016A CN104811016A CN201410043729.7A CN201410043729A CN104811016A CN 104811016 A CN104811016 A CN 104811016A CN 201410043729 A CN201410043729 A CN 201410043729A CN 104811016 A CN104811016 A CN 104811016A
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Abstract
The invention relates to the control technology of an electric power device and especially relates to the control technology of an electric power conversion device. In order to realize an integrated structure of an electric power converter controller and an electric power converter, the invention provides an electric power conversion device, a control loop and an electrical power system. The electric power conversion device comprises the electric power converter controller and the electric power converter which are connected through an interface circuit, wherein the electric power converter controller receives external control signals and sends an external control instruction to the electric power converter according to the external control signals; and the electric power converter executes the external control instruction. The integrated structure of the electric power converter controller and the electric power converter is realized, so that required communication protocols can be set between the electric power converter controller and the electric power converter without obeying field bus communication protocols.
Description
Technical field
The present invention relates to the control technology of power equipment, particularly relate to a kind of control technology of power-converting device.
Background technology
Power converter is to power parameter, and the size of such as voltage or electric current, waveform and frequency convert, and the circuit realizing power converter, power transformation circuit or power converter, is widely used in various electric power system.These power converters, such as, can be connected with electric rotating machine (motor or engine), to control the rotation of electric rotating machine.
The basic comprising of power converter comprises major loop and communication plug-in unit, and control loop controls major loop, and communication plug-in unit is connected with control loop.
In various electric power system, power converter needs to accept the control from external control signal, in prior art, arranges power converter controller and receives external control signal and be transmitted to power converter thus control.Communication plug-in unit, by fieldbus and power converter controller communication connection, is responsible for the communication between the control loop of power converter and power converter controller.
Be connected with fieldbus by communication plug-in unit between existing control loop and power converter controller, need to defer to fieldbus communication protocol, and because to need in communication plug-in unit then to cause the failure rate that communicates higher.
Summary of the invention
Embodiment of the present invention is the integral structure realizing power converter controller and power converter, provides a kind of power-converting device.
For this reason, an aspect of embodiment of the present invention there is provided a kind of power-converting device, comprising: the power converter controller connected by interface circuit and power converter, wherein:
Described power converter controller receives external control signal, and sends external control instruction according to described external control signal to described power converter;
Described power converter performs described external control instruction.
Above-mentioned power converter controller provided by the invention and power converter achieve integral structure, thus can to make between power converter controller and power converter, according to the private communication protocol communication beyond fieldbus communication protocol, need not fieldbus communication protocol be deferred to.Further, due to transfer need not be carried out by communication plug-in unit, therefore, it is possible to reduce the probability of communication failure.
In embodiment of the present invention mode, described power converter comprises major loop and control loop, described control loop, and described control loop connects power converter controller by interface circuit, receive described external control instruction from described power converter controller, and perform described external control instruction.
The another aspect of embodiment of the present invention, described control loop after powering at every turn, confirm that following two conditions start when all meeting to perform the handshake procedure between described power converter controller, described two conditions are: complete and send enable signal and complete the enable signal receiving described power converter controller to described power converter controller.
So according to the enabled state time of power converter controller, enable confirmation process can be controlled flexibly, improves the applicability of power-converting device, also improve the success rate setting up communication between power converter controller and power converter.
The another aspect of embodiment of the present invention, there is provided a kind of there is power converter controller to make mistakes the power-converting device of judgment mechanism, when described control loop starts the stand-by period arrival of timing from power on time, the enable signal not receiving described power converter controller then confirms that described power converter controller is made mistakes.
For improving the adaptability of power-converting device further, can be set to a configurable parameter stand-by period, can be configured to the time value determined according to applied environment or characterize described waiting time is infinitely-great specific coding.
Wherein, in the above-mentioned execution mode of the present invention, described power converter controller receives external control signal by field bus communication, sends external control instruction by non-at-scene bus communication to described power converter.After described control loop and described power converter controller and clock synchronous, start to perform the handshake procedure between described power converter controller.
The present invention, also based on above-mentioned power-converting device, provides a kind of electric power system, comprising: above-mentioned any one power-converting device; And the electric rotating machine of rotation is controlled by described power-converting device.
Based on power-converting device provided by the invention, the control method also providing a kind of power converter more on the one hand of embodiment of the present invention, comprising:
Receive the external control instruction from power converter controller by interface circuit, described external control instruction is the instruction that described power converter controller sends according to external control signal; The operation of described major loop is controlled according to described external control instruction.
And then, this control method also comprises: after powering at every turn, confirm that following two conditions start when all meeting to perform the handshake procedure between described power converter controller, described two conditions are: complete and send enable signal to described power converter controller, and complete the enable signal receiving described power converter controller.
Further, this control method also comprises: the enable signal not receiving described power converter controller when starting the stand-by period arrival of timing from power on time, confirms that described power converter controller is made mistakes.
Based on above-mentioned power converter control method, also provide a kind of control loop of power converter, there is following functional module:
Acceptance division, for being received the external control instruction from power converter controller by interface circuit, described external control instruction is the instruction that described power converter controller sends according to external control signal;
Enforcement division, for controlling the operation of described major loop according to described external control instruction.
The control loop of further power converter, also comprise: confirmation unit, for after powering at every turn, confirm that following two conditions start when all meeting to perform the handshake procedure between described power converter controller, described two conditions are: send enable signal to described power converter controller and receive the enable signal of described power converter controller.Can also judging part be had further, not receive the enable signal of described power converter controller when the stand-by period for starting timing from power on time arrives, then confirm that described power converter controller is made mistakes.
In sum, the power-converting device that the embodiment of the present invention provides, achieves the integration of power converter controller and power converter.
Accompanying drawing explanation
The power-converting device structural principle schematic diagram that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 as comparison other, by structural representation that communication plug-in unit is connected with field bus communication between power converter controller and power converter;
A kind of concrete structure principle schematic of the power-converting device that Fig. 3 provides for the embodiment of the present invention;
In the power-converting device that Fig. 4 a and Fig. 4 b provides for the embodiment of the present invention, between power converter controller and control circuit, enabled state confirms the sequencing control schematic diagram of process;
The another kind of concrete structure principle schematic of the power-converting device that Fig. 5 provides for the embodiment of the present invention;
In the power-converting device that Fig. 6 provides for the embodiment of the present invention, the enable control flow schematic diagram of control circuit;
In the power-converting device that Fig. 7 provides for the embodiment of the present invention, the function structure schematic diagram of control circuit.
Description of reference numerals:
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
Embodiment
Referring to accompanying drawing, explain embodiments of the present invention.
As shown in Figure 1, for a kind of power-converting device 10 that the embodiment of the present invention provides, for realizing the integration of power converter and power converter controller, in the power-converting device 10 shown in Fig. 1, power converter 11 is connected by interface circuit 13 with power converter controller 12, wherein: power converter controller 12 receives external control signal, send external control instruction according to external control signal to power converter 11, power converter 11 performs the external control instruction received.Power-converting device 10, such as, can be connected with electric rotating machine (motor or generator), in order to control the rotation of electric rotating machine, forms electric power system.Now, electric power system comprises power-converting device 10 and electric rotating machine.In addition, electric power system also can be such as the elevator device comprising power-converting device 10 and electric rotating machine.
In electric power system, external control signal is generally sent by a guidance panel, power converter controller 12 can pass through fieldbus attended operation panel, external control signal is deferred to the communication protocol of fieldbus to the communication of power converter controller 12 by guidance panel, and it is inner directly connected by interface circuit communication at power-converting device 10 between power converter 11 and power converter controller 12, do not need the communication protocol deferred on fieldbus, can communicate in accordance with (non-at-scene bus) communication protocol outside the fieldbus arranged voluntarily neatly.From hardware configuration, adopt interface circuit 13, power converter 11 and power converter controller 12, such as utilize two sockets to be plugged on the two ends of interface circuit respectively, interface circuit 13 such as can be realized by the hardware configuration of the circuit on printed circuit board (PCB) or the not responsible communication such as connector, distribution.If when forming interface circuit with the circuit on the printed circuit board (PCB) beyond distribution or connector, then can reduce the faulty operation that the noise due to distribution carrying causes.Therefore with the mode utilizing field bus communication to be connected in prior art, this mode communicated to connect by interface circuit 13, owing to not being responsible for the communication plug-in unit of communication between power converter and power converter controller, therefore, it is possible to reduce the generation probability of communication failure.
Showing power converter and individual transform device controller is arranged respectively for the ease of understanding Fig. 2, comprising the basic structure schematic diagram of the power converter of communication plug-in unit.As shown in Figure 2, power converter 21 comprises major loop part 211, control loop part 212 and communication plug-in unit 213, wherein control loop part 212 is for controlling major loop part 211, communication plug-in unit 213 is connected with control loop part 212, be connected by field bus communication with between power converter controller 22, be responsible for the communication between control loop part 212 and power converter controller 22.Therefore the communication between control loop part 212 and power converter controller 22 must follow field bus protocol.
As shown in Figure 3, for a kind of power-converting device 30 that the embodiment of the present invention provides, power converter 31 wherein generally comprises major loop part 311 and control loop part 312, control loop part 312 controls major loop part 311 and carries out power converter, power converter controller 32 is communicated to connect by interface circuit 33 and control loop part 312 just, control loop part 312 is as the control element of power converter, receive external control instruction by interface circuit 33 from power converter controller 32 and control the power converter of major loop part 311 according to external control instruction.Control loop part 312 generally comprises flush bonding processor, and some interlock circuits, and interlock circuit comprises drive circuit, the control circuit and protective circuit etc. of major loop part, also comprises the such as radiating element such as power circuit and fan etc.
Still shown in Figure 3, such as, in a common apparatus for controlling elevator, power converter 31 can be AC-AC frequency converter, matrix rectifier, exports to the motor that elevator runs according to the mode of operation of setting to the voltage that AC network provides after carrying out frequency conversion.For once-through operation, when elevator is parked in 1 layer, user uses lift operation panel to indicate and is up to 5 layers, the operation signal being up to 5 layers arrives power converter controller 32 as an external control signal by fieldbus, the communication protocol of setting between power converter controller 32 basis and control loop part 312, generate an external control instruction based on external control signal and send to control loop part 312, control loop part 312 controls the operation of major loop part according to external control instruction.In the same manner as the embodiment shown in Fig. 1, owing to not needing to defer to field bus protocol between the control loop part 312 of power converter 31 and power converter controller 32, therefore how generating external control instruction based on external control signal then can be very flexible, such as, can be one and be up to 5 layers of corresponding instruction and encode.Between control loop part 312 and power converter controller 32, the setting of communication mode is well known to those skilled in the art, and is only described for a control procedure here, does not limit protection scope of the present invention.
For ensureing to set up communication between control loop part 312 and power converter controller 32, control loop part 312 and power converter controller 32 to power on and after confirming self to enter the enabled state that can communicate respectively at every turn, carry out clock synchronous, and send enable signal to the other side and inform state, according to respective enable signal, both sides judge that the other side is in the enabled state can setting up communication after, start the handshake procedure before executive communication, this process before handshake procedure can be called that enabled state confirms process.
As shown in Figs. 4a and 4b, for control loop part 312 in the embodiment of the present invention and power converter controller 32 are in the sequential that communicates performing enabled state confirmation process, after power converter powers on, control loop part 312 sends enable signal e by interface circuit 33 after confirming to be in the enabled state can setting up communication
1, power converter controller 32 sends enable signal e by interface circuit 33 after confirming to be in the enabled state can setting up communication after the power-up
2, due to the two from power on to needed for enabled state time may identical also may not be identical, therefore such as Fig. 4 a, enable signal e
1prior to e
2send.Or such as shown in Fig. 4 b, enable signal e
1be later than e
2send.As long as but enable signal e
1and e
2all send and received by the other side, then meaning can at T
1or T
2moment starts to perform handshake procedure.For control loop part 312, if the enable signal e of self
1prior to e
2send, then finishing receiving enable signal e
2t
1moment starts to perform handshake procedure.If the enable signal e of self
1receiving enable signal e
2after send, be then sent completely enable signal e
1t
2moment starts to perform handshake procedure.Enable signal e
1and e
2can be high level or the low level of agreement, handshake procedure is also that the square wave by sending mutually a series of agreement width and frequency completes, handshake procedure needs to start after clock synchronous, handshake procedure terminates rear both sides and enters normal communication process, these are well known to those skilled in the art, and are not described in detail.
Therefore, as long as when confirming that following two conditions all meet for control loop part 312, just can start to perform the handshake procedure between power converter controller 32, these two conditions are: complete and send enable signal and complete the enable signal receiving power converter controller 32 to power converter controller 32.Also be same for power converter controller 32.So can according to different application environment, the enabled state time needed for power converter controller 32, control enabled state flexibly and confirm process, improve the applicability of power-converting device.
As shown in Figure 5, for the structural representation of another power-converting device 30 ' that the embodiment of the present invention provides, according to Fig. 5, the embodiment of the present invention can also set up the judgment mechanism of makeing mistakes of power converter controller 32 in control loop part 312 ', can set an enable signal e in control loop part 312 '
2maximum wait time, to judge whether power converter controller 32 makes mistakes, the stand-by period can from power on time moment T
0rise and start timing, control loop part 312 ', when the stand-by period set arrives, does not receive the enable signal e of power converter controller 32
2then confirm that power converter controller 32 is made mistakes, control loop part 312 ' can take the measures such as warning after confirmation power converter controller 32 is made mistakes.The monitoring of maximum wait time, the timer be triggered while power-converting device powers on can be utilized easily to realize, and specific implementation is well known to those skilled in the art, and no longer describes in detail here.
Due in different application systems, power converter controller 32 is different to the time needed for enabled state from power on, in the embodiment of the present invention, stand-by period can be configured as a configurable parameter, in some cases, stand-by period can be configured to a time value determined, such as 30min, 600min etc., if need even can be configured to infinity, namely the wait power converter controller 32 that control loop part 312 ' can be in unlimited time, until power converter controller 32 is ready send enable signal.In specific implementation, infinitely-great parameter can characterize with the specific coding of an agreement, and such as 0, or other codings.After control loop part 312 ' powers on, need to read various operational factor, configurable parameter can be prestored in the memory space of specifying as one of them.In actual applications, if need to change this configuration parameter, then the parameter value of the storage in this designated space is revised.When the stand-by period as a configurable parameter time, the maximum duration of power converter controller in different application environment needed for enabled state preparation can be taken into full account, thus the communication failure avoided arranging the fixing stand-by period and may cause, further increase the adaptability of the power-converting device that the embodiment of the present invention provides.
In the embodiment of the present invention, because power converter controller and power converter are integrated in a power-converting device, therebetween communicated to connect by communication interface, therefore the clock synchronous relying on external fieldbus is not needed, as long as keep clock synchronous just communication can be completed therebetween.And then because the two can use the private communication protocol beyond fieldbus, then can improve the fail safe of communication by arranging some parameters for authentication, and the confidentiality of the information such as data.
The power converter mentioned in the embodiment of the present invention can comprise frequency converter and inverter, and wherein frequency converter can comprise AC-AC frequency converter, AC and DC hybrid transmission system, matrix rectifier etc.
As shown in Figure 6, according in the above-mentioned power-converting device that the invention process provides, the enable control procedure of control loop part, mainly comprises following key step:
Step S601, judge whether self enters enabled state, if it is perform step S602, otherwise continue to judge whether self enters enabled state;
Step S602, to power converter controller send enable signal;
Step S603, judge whether to receive the enable signal from power converter controller, if perform step S604 and start handshake procedure, enabled state confirms that process terminates, otherwise performs step S605;
Step S605, judge whether the stand-by period reaches, if it is perform step S606 and confirm that power converter controller is made mistakes, otherwise return the enable signal that step S603 continues to wait for power converter controller.
Step S603 also can perform prior to step S601, final after powering at every turn, as long as when confirming that following two conditions all meet, obtain the clock synchronous between power converter controller, and start to perform the handshake procedure between power converter controller, two conditions are: complete and send enable signal and complete the enable signal receiving power converter controller to power converter controller.
After handshake procedure terminates, power converter controller receives the external control instruction from power converter controller by interface circuit and controls the operation of major loop part according to external control instruction.
As shown in Figure 7, for realizing above-mentioned control, control loop part needs to possess following function part:
Acceptance division 701, for being received the external control instruction from power converter controller by interface circuit, external control instruction is the instruction that power converter controller sends according to external control signal;
Enforcement division 702, for controlling the operation of major loop part according to external control instruction.
Confirmation unit 703, for after powering at every turn, when confirming that following two conditions all meet, obtain the clock synchronous between power converter controller, and start to perform the handshake procedure between power converter controller, two conditions are: complete and send enable signal and complete the enable signal receiving power converter controller to power converter controller.
Judging part 704, does not receive the enable signal of power converter controller when the stand-by period for starting timing from power on time arrives, confirm that power converter controller is made mistakes.
In sum, the power-converting device that the embodiment of the present invention provides, achieves the integration of power converter controller and power converter, and the enabled state provided further confirms flow process, improves the success rate that both sides set up communication.
Be described in detail specific implementation of the present invention with reference to accompanying drawing above, obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. a power-converting device, is characterized in that, comprising: the power converter controller connected by interface circuit and power converter, wherein:
Described power converter controller receives external control signal, and sends external control instruction according to described external control signal to described power converter;
Described power converter performs described external control instruction.
2. power-converting device as claimed in claim 1, it is characterized in that, described power converter comprises major loop part and control loop part, described control loop part connects power converter controller by interface circuit, receive described external control instruction from described power converter controller, and according to described external control instruction, described major loop part is controlled.
3. power-converting device as claimed in claim 2, it is characterized in that, described control loop part after powering at every turn, confirm that following two conditions start when all meeting to perform the handshake procedure between described power converter controller, described two conditions are: complete and send enable signal and complete the enable signal receiving described power converter controller to described power converter controller.
4. power-converting device as claimed in claim 3, it is characterized in that, when described control loop part starts the stand-by period arrival of timing from power on time, the enable signal not receiving described power converter controller then confirms that described power converter controller is made mistakes.
5. power-converting device as claimed in claim 4, it is characterized in that, the described stand-by period is a configurable parameter, and can be configured to the time value determined or characterize described waiting time is infinitely-great specific coding.
6. the power-converting device as described in as arbitrary in Claims 1 to 5, it is characterized in that, described power converter controller receives external control signal by field bus communication, sends external control instruction by non-at-scene bus communication to described power converter.
7. the power-converting device as described in as arbitrary in claim 2 ~ 5, is characterized in that, after described control loop part and described power converter controller and clock synchronous, starts to perform the handshake procedure between described power converter controller.
8. an electric power system, comprising:
Power-converting device described in claim 1; And
The electric rotating machine rotated is controlled by described power-converting device.
9. a control method for power converter, is characterized in that, comprising:
Receive the external control instruction from power converter controller by interface circuit, described external control instruction is the instruction that described power converter controller sends according to external control signal;
The operation of described major loop part is controlled according to described external control instruction.
10. a control loop part for power converter, is characterized in that, comprising:
Acceptance division, for being received the external control instruction from power converter controller by described interface circuit, described external control instruction is the instruction that described power converter controller sends according to external control signal;
Enforcement division, for controlling the operation of described major loop part according to described external control instruction.
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| 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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|---|---|---|---|
| CN201410043729.7A CN104811016B (en) | 2014-01-29 | 2014-01-29 | Power-converting device, control loop and electric system |
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| CN104811016B CN104811016B (en) | 2018-07-17 |
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| CN1193217A (en) * | 1996-12-26 | 1998-09-16 | 株式会社日立制作所 | Inverter device |
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| 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 |
| CN101727430A (en) * | 2009-11-11 | 2010-06-09 | 中兴通讯股份有限公司 | Method and device for hot plug of card |
| CN101969268A (en) * | 2010-10-14 | 2011-02-09 | 北方联合电力有限责任公司 | Wind driven generator control system |
| CN102340255A (en) * | 2010-07-16 | 2012-02-01 | 洛克威尔自动控制技术股份有限公司 | Power layer generation of inverter gate drive signals |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1193217A (en) * | 1996-12-26 | 1998-09-16 | 株式会社日立制作所 | 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 |
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