DE102005045957A1 - Signal transmission method between a central control and decentralized controls and device uses power semiconductor having at least two switch condition and radio or light guide transmission - Google Patents
Signal transmission method between a central control and decentralized controls and device uses power semiconductor having at least two switch condition and radio or light guide transmission Download PDFInfo
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- DE102005045957A1 DE102005045957A1 DE102005045957A DE102005045957A DE102005045957A1 DE 102005045957 A1 DE102005045957 A1 DE 102005045957A1 DE 102005045957 A DE102005045957 A DE 102005045957A DE 102005045957 A DE102005045957 A DE 102005045957A DE 102005045957 A1 DE102005045957 A1 DE 102005045957A1
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
- G08C23/06—Non-electrical signal transmission systems, e.g. optical systems through light guides, e.g. optical fibres
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
- H02J13/00017—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus using optical fiber
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00019—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using optical means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
- H02J13/00026—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission involving a local wireless network, e.g. Wi-Fi, ZigBee or Bluetooth
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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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/483—Converters with outputs that each can have more than two voltages levels
- H02M7/4835—Converters with outputs that each can have more than two voltages levels comprising two or more cells, each including a switchable capacitor, the capacitors having a nominal charge voltage which corresponds to a given fraction of the input voltage, and the capacitors being selectively connected in series to determine the instantaneous output voltage
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/18—Modifications for indicating state of switch
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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
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
Abstract
Description
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Übertragung von Signalen zwischen einer zentralen Steuerung und einer oder mehreren dezentralen Steuerungen.The The invention relates to a method and a device for transmission of signals between a central controller and one or more remote ones Controls.
Zur Steuerung von Stromrichterschaltungen müssen Schaltsignale mit einer hohen Zeitauflösung und geringer Übertragungsverzögerungszeit jitterfrei von einer zentralen Steuerung an die Leistungshalbleiterschalter des Stromrichters übertragen werden.to Control of power converter circuits must be switching signals with a high time resolution and low transmission delay time jitter-free from a central control to the power semiconductor switches of the power converter become.
Um eine hohe Zuverlässigkeit und Verfügbarkeit eines Stromrichters zu gewährleisten, darf die Übertragung der Signale nicht gestört oder kurz unterbrochen werden. Eine Störung kann unter Umständen zur sofortigen Zerstörung des Stromrichters und der ihm zugeordneter Anlagen, z.B. elektrischen Maschinen, führen. Aus diesem Grund existieren extrem hohe Anforderungen an die Störsicherheit der Signalübertragung.Around a high reliability and availability to ensure a converter, allowed the transfer the signals are not disturbed or interrupted for a short time. A malfunction may be due to immediate destruction the converter and its associated equipment, e.g. electrical machines, to lead. For this reason, there are extremely high requirements for interference immunity the signal transmission.
Zur Ansteuerung eines einzelnen Leistungshalbleiterschalters wird nach heutigem Stand ein Lichtwellenleiter oder Transformator benötigt, was die Kosten erhöht. Bei Stromrichtern mit einer Vielzahl von unabhängigen Leistungshalbleiterschaltern ergeben sich dementsprechend viele Lichtwellenleiter, die zur Ansteuerung der Leistungshalbleiterschalter verwendet werden.to Control of a single power semiconductor switch is after Today, an optical fiber or transformer needs what the Costs increased. In converters with a variety of independent power semiconductor switches result Accordingly, many optical fibers that are used to control the power semiconductor switch can be used.
Entsprechend
ist die Ausfallwahrscheinlichkeit der Gesamtübertragung höher und
darunter leidet wiederum die Verfügbarkeit des Stromrichters. Dies
gilt insbesondere für
Mehrpunktstromrichter mit einer sehr großen Anzahl von zu steuernden
Leistungshalbleiterschaltern wie z.B. in der Schrift
Aufgrund der begrenzten Lebensdauer von Leuchtdioden, die die Lichtsignale über die Lichtwellenleiter senden, wird mit die ser Technik bei Mehrpunktstromrichtern mit einer Vielzahl an zu steuernden Leistungshalbleiterschaltern die Ausfallrate des gesamten Stromrichters empfindlich verschlechtert.by virtue of the limited life of light emitting diodes that transmit the light signals over the Fiber optic transmission is achieved with this technology in multipoint converters with a large number of power semiconductor switches to be controlled the failure rate of the entire power converter is severely degraded.
Der Erfindung liegt deshalb die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung zur Übertragung von Signalen zur Ansteuerung von Leistungshalbleiterschaltern anzugeben, bei welchen die Zuverlässigkeit der Signalübertragung verbessert ist und bei welcher Kosten reduziert werden.Of the The invention is therefore based on the object, a method and a device for transmission indicate signals for driving power semiconductor switches, where the reliability the signal transmission is improved and at which costs are reduced.
Diese Aufgabe wird erfindungsgemäß gelöst, durch ein Verfahren zur Übertragung von Signalen zwischen einer zentralen Steuerung und einer oder mehreren dezentralen Steuerungen, wobei jeder dezentralen Steuerung ein oder mehrere Leistungshalbleiterschalter zugeordnet sind, wobei
- • jeder Leistungshalbleiterschalter zumindest zwei Schaltzustände aufweist,
- • die Signale von der zentralen Steuerung zu den dezentralen Steuerungen mittels einer Funkschnittstelle oder eines Lichtwellenleiters übertragen werden, wobei im Fall des Lichtwellenleiters die dezentralen Steuerungen alle mit dem Lichtwellenleiter verbunden sind,
- • die zentrale Steuerung Sendeblöcke als Signale zu einer dezentralen Steuerung sendet, wobei die Sendeblöcke aus Bits bestehen, die in einem Bittakt gesendet werden und wobei der Sendeblock durch ein Barkercodewort angeführt wird, welchem die Schaltinformation für zumindest einen Leistungshalbleiterschalter in einem Datenblock folgt, wobei die Schaltinformation Schaltzustände und/oder Schaltzeitpunkte enthält.
- Each power semiconductor switch has at least two switching states,
- The signals are transmitted from the central controller to the decentralized controllers by means of a radio interface or an optical waveguide, wherein in the case of the optical waveguide the decentralized controllers are all connected to the optical waveguide,
- The central controller transmits transmission blocks as signals to a decentralized controller, the transmission blocks consisting of bits transmitted in a bit clock, the transmission block being followed by a bit code word followed by the switching information for at least one power semiconductor switch in a data block; Switching information contains switching states and / or switching times.
Dadurch wird vorteilhaft erreicht, dass im Fall einer Übertragung der Signale über eine leitungsgebundene Datenübertragungsstrecke bzw. einen Lichtwellenleiter nur noch eine Datenübertragungsstrecke verwendet werden muss, um mehrere Leistungshalbleiterschalter anzusteuern. Ggf. können mehrere dezentrale Steuerungen vorgesehen werden, welche alle an einem Lichtwellenleiter angeschlossen sind, wobei die dezentra len Steuerungen je nur einen Leistungshalbleiterschalter ansteuern. Denkbar ist auch, dass nur eine dezentrale Steuerung vorgesehen ist, welche alle Leistungshalbleiterschalter ansteuert. Auch Zwischenformen mit mehreren dezentralen Steuerungen, welche jeweils mehrere Leistungshalbleiterschalter ansteuern, sind denkbar. Die Leistungshalbleiterschalter können dabei z.B. IGBTs (Insulated Gate Bipolar Transistor) oder Transistoren oder auch Thyristoren sein. Die Vorteile werden erzielt durch eine erfindungsgemäße digitale Übertragung der Schaltinformation an die dezentralen Steuerungen, bei welcher die Schaltinformation an mehrere Leistungshalbleiterschalter über einen oder mehrere unabhängige Lichtwellenleiter übertragen wird. Die Schaltinformation enthält Schaltzustände und/oder Schaltzeitpunkte, wobei die Schaltzeitpunkte angeben, zu welchen Zeiten die Schaltzustände der Leistungshalbleiterschalter gelten sollen. Es kann auch signalisiert werden, dass ein Schaltzustand eines Leistungshalbleiterschalters gleich bleiben soll, indem ein Schaltzustand übertragen wird, welcher bereits im Leistungshalbleiterschalter vorliegt.Thereby is advantageously achieved that in case of transmission of the signals via a wired data transmission link or an optical waveguide only uses a data transmission path must be to control multiple power semiconductor switches. Possibly. can several decentralized controls are provided, all on an optical fiber are connected, with the decentralized len controls only one Activate power semiconductor switch. It is also conceivable that only a decentralized control is provided, which all power semiconductor switches controls. Also intermediate forms with several decentralized controls, which each drive a plurality of power semiconductor switches are conceivable. The power semiconductor switches may be e.g. IGBTs (Insulated Gate bipolar transistor) or transistors or thyristors be. The advantages are achieved by a digital transmission according to the invention the switching information to the decentralized controls, in which the switching information to multiple power semiconductor switches via one or several independent Transfer fiber optic cable becomes. The switching information contains switching states and / or switching times, which indicate the switching times, too which times the switching states the power semiconductor switch should apply. It can also signal be that a switching state of a power semiconductor switch should remain the same by a switching state is transmitted, which already present in the power semiconductor switch.
Die Lichtwellenleiter können auch durch eine beliebige leitungsgebundene Datenübertragungsstrecke wie z.B. eine Transformatorübertragungsstrecke (bestehend aus einem oder mehreren Transformatoren z.B. auch Planartransformatoren) ersetzt werden.The optical waveguides can also be replaced by any line-bound data transmission path such as a transformer transmission path (consisting of one or more transformers, for example also planar transformers) become.
Im Fall der Übertragung über eine Funkschnittstelle anstatt über eine leitungsgebundene Datenübertragungsstrecke werden Lichtwellenleiter eingespart und die Zuverlässigkeit der Übertragung und/oder die Freiheiten bei der Stromrichterkonstruktion werden erhöht.in the Case of transmission over a Radio interface instead of over a wired data transmission link Fiber optic cables are saved and the reliability the transfer and / or the freedom in the converter design is increased.
Eine vorteilhafte Ausgestaltung ergibt sich, wenn die Schaltinformation in der zentralen Steuerung kanalcodiert wird, so dass auftretende Fehler bei der Übertragung in einer dezentralen Steuerung korrigiert werden können. Damit wird die Übertragung nochmals zuverlässiger ausgeführt. Die Schaltin formation kann mittels eines Faltungscodes oder zyklisch Codes oder Blockcodes kanalcodiert werden. Vorteilhafter Weise wird die Schaltinformation nach dem Kanalcodieren einem Interleaving unterzogen, um Bündelfehler zu vermeiden. Der gewählte Barkercode besitzt eine Hamming-Distanz von deutlich größer als 1 gegenüber allen möglichen Kombinationen der über den gleichen Datenkanal übertragenen Daten.A advantageous embodiment results when the switching information is channel coded in the central controller, so that occurring Error during transmission can be corrected in a decentralized control. In order to will the transmission even more reliable executed. The Schaltin formation can by means of a convolutional code or cyclically Code or block codes are channel coded. Advantageously, will the switching information after the channel coding an interleaving subjected to bunch error to avoid. The chosen bar code has a Hamming distance of significantly greater than 1 over all potential Combinations of over transmit the same data channel Dates.
Erfindungsgemäß führt die dezentrale Steuerung eine Bitsynchronisation durch, so dass Anfang und Ende eines Bits bekannt sind, um die übertragenen Sendeblöcke korrekt empfangen zu können. Die Bitsynchronisation kann mit Hilfe einer Phase-Locked-Loop(PLL)-Einheit durchgeführt werden. Weiterhin nimmt die dezentrale Steuerung eine Abtastung des Empfangssignals vor, wobei die Abtastfrequenz größer oder gleich dem Bittakt ist. Damit kann vorteilhaft die Signalqualität eingeschätzt werden.According to the invention leads decentralized control a bit synchronization through, so the beginning and End of a bit are known to the transmitted transmission blocks correctly to be able to receive. The bit synchronization can be done using a phase-locked loop (PLL) unit carried out become. Furthermore, the decentralized control takes a scan of the received signal, wherein the sampling frequency is greater than or is equal to the Bittakt. Thus, the signal quality can advantageously be estimated.
Vorteilhaft nimmt die dezentrale Steuerung eine Synchronisation mittels des Barkercodeworts vor, so dass der Anfang eines Sendeblocks und/oder eines Datenblocks bekannt ist. Es können aber auch Alternativen eingesetzt werden, die der Eigenschaft der Barkercodewörter ähneln. Das Barkercodewort signalisiert den Beginn eines neuen Sendeblocks und ist aufgrund seiner Autokorrelationseigenschaften leicht zu detektieren.Advantageous takes the decentralized control synchronization by means of Barkercodeworts ago, so that the beginning of a transmission block and / or a Data block is known. It can But also alternatives are used that are the property of Barker codewords resemble. The Barkercodewort signals the beginning of a new transmission block and is easy to detect due to its autocorrelation properties.
Hat die dezentrale Steuerung Schaltinformation für zumindest einen ihr zugeordneten Leistungshalbleiterschalter empfangen, so steuert sie den Leistungshalbleiterschalter entsprechend elektrisch an, so dass dieser in seinem Schaltzustand verbleibt oder in einen anderen Schaltzustand übergeht.Has the decentralized control switching information for at least one assigned Power semiconductor switch receives, so it controls the power semiconductor switch corresponding electrically, so that this in its switching state remains or changes to another switching state.
Die dezentrale Steuerung empfängt Schaltinformation für zumindest einen ihr zugeordneten Leistungshalbleiterschalter und übermittelt die Schaltinformationen an den Leistungshalbleiterschalter mit einem beliebigen Übertragungsverfahren weiter.The decentralized control receives Switching information for at least one power semiconductor switch associated with it and transmitted the switching information to the power semiconductor switch with a any transmission method further.
Vorteilhafter Weise wird in einem Datenblock zumindest ein Codewort gesendet, welches wiederholt wird, bis ein neuer Sendeblock gesendet wird, wobei das Codewort Schaltinformation für zumindest einen Leistungshalbleiterschalter enthält und Wiederholungen des Codewortes durch den Beginn eines neuen Sendeblocks abgeschnitten werden können. Die Wiederholungen dienen dabei vorteilhafter Weise zur Überprüfung in der dezentralen Steuerung, ob die Schaltinformation korrekt empfangen wurde.Favorable Way, at least one codeword is sent in a data block, which is repeated until a new transmission block is sent, wherein the codeword switching information for contains at least one power semiconductor switch and repetitions of the code word can be cut off by starting a new send block. The Repetitions are used advantageously for checking in the decentralized control whether the switching information was received correctly.
Vorteilhafter Weise können auch zusammen mit den Schaltinformationen der Leistungshalbleiterschalter weitere Informationen in den Datenstrom integriert werden. So könnte beispielsweise das Codewort auch zusätzliche Messbefehle oder Messtrigger bzw. weitere beliebige Befehle an die dezentralen Steuerungen oder die Leistungshalbleiterschalter enthalten.Favorable Way you can also together with the switching information of the power semiconductor switch further information can be integrated into the data stream. For example the codeword also additional Measuring commands or measurement trigger or any other commands to the decentralized controllers or the power semiconductor switches included.
Eine vorteilhafte Ausführungsform ergibt sich, wenn im Codewort nur Schaltzustände übertragen werden und der Schaltzeitpunkt aus einer vorgebbaren Zeitverzögerung und dem Empfangszeitpunkt des Barkercodeworts errechnet wird. Damit wird die Übertragung effizient durchgeführt, da keine Zeit für die Übertragung der Schaltzeitpunkte verwendet werden muss. Dann kann vorteilhaft auch die Information über die Schaltzustände für mehrere Leistungshalbleiterschalter mittels Bits übertragen werden. Die Bits können vorteilhafter Weise im Codewort derart angeordnet werden, dass jeweils zuerst alle n-ten Bits der Information über die Schaltzustände für jeden Leistungshalbleiterschalter übertragen werden, bevor die (n+1)-ten Bits übertragen werden. D.h., es werden zuerst die ersten Bits der Schaltinformation aller Leistungshalbleiterschalter übertragen und dann die zweiten Bits usw..A advantageous embodiment results when only switching states are transmitted in the code word and the switching time from a predefinable time delay and the reception time of the Barkerkodeworts is calculated. This will be the transfer carried out efficiently, there is no time for the transfer the switching times must be used. Then can be beneficial also the information about the switching states for several power semiconductor switches be transmitted by means of bits. The bits can advantageously be arranged in the code word such that each first, every nth bits of information about the switching states for each Power semiconductor switches are transmitted, before transmitting the (n + 1) -th bits become. That is, first the first bits of the switching information transmitted all power semiconductor switch and then the second Bits etc ..
Eine weitere erfindungsgemäße Ausgestaltung ergibt sich, wenn im Codewort Schaltzustände und Schaltzeitpunkte übertragen werden, wobei die Schaltzustände in einem ersten Teil und die zugehörigen Schaltzeitpunkte in einem zweiten Teil des Code- wortes übertragen werden. Damit ist vorteilhaft eine erhöhte Präzision bei den Schaltzeitpunkten zu erreichen.A another embodiment of the invention results when transferred in the code word switching states and switching times be, with the switching states in a first part and the associated switching times in one second part of the code word become. This is advantageous an increased precision at the switching times to reach.
Vorteilhafter Weise überprüft die dezentrale Steuerung anhand der Wiederholungen der Codewörter, ob die Schaltinformation korrekt empfangen wurde und misst die Qualität der Übertragung anhand der abgetasteten Bits und/oder der Kanaldecodierung. Damit sind Fehler beim Lichtwellenleiter frühzeitig erkennbar und z.B. an die zentrale Steuerung signalisierbar.Favorable Weise checks the decentralized control based on the repetitions of the codewords, whether the switching information was correctly received and measures the quality of the transmission based on the sampled Bits and / or channel decoding. Thus, faults in the optical fiber are early recognizable and e.g. can be signaled to the central control.
Vorteilhaft werden Signale von den dezentralen Steuerungen zur zentralen Steuerung mittels einer Funkschnittstelle oder eines weiteren Lichtwellenleiters übertragen, wobei die Signale Fehlermeldungen und/oder Messwerte enthalten und wobei im Fall des weiteren Lichtwellenleiters die dezentralen Steuerungen alle mit dem weiteren Lichtwellenleiter verbunden sind. Die Signale von den dezentralen Steuerungen zur zentralen Steuerung werden derart gesendet, dass die Fehlermeldungen und/oder Messwerte für jeden Leistungshalbleiterschalter in einem Block zusammengefasst werden und die Blöcke nacheinander gesendet werden. D.h., die Daten werden Block für Block für jeden Leistungshalbleiterschalter gesendet.Advantageously, signals from the decentralized controllers to the central controller by means of a radio interface or another Lichtwel In the case of the further optical waveguide, the decentralized controllers are all connected to the further optical waveguide, wherein the signals contain error messages and / or measured values. The signals from the remote controllers to the central controller are sent such that the error messages and / or readings for each power semiconductor switch are combined in a block and the blocks are sent in sequence. That is, the data is sent block by block for each power semiconductor switch.
Die Übertragung über eine Funkschnittstelle kann vorteilhafter Weise mittels eines WLAN (Wireless Local Area Network, WLAN) ausgeführt werden.The transmission over a Radio interface can advantageously by means of a WLAN (wireless Local Area Network, WLAN) become.
Die erfindungsgemäßen Übertragungsverfahren bieten zusätzlich auch noch Diagnosemöglichkeiten, mit deren Hilfe der Qualitätszustand des Lichtwellenleiters überprüft werden kann. Dies ermöglicht, dass bei routinemäßigen Wartungen gealterte Lichtwellenleiter bereits vor dem Ausfall der Signalübertragung ausgetauscht werden könnten. Zusätzlich eröffnet die kanalcodierte Signalübertragung noch die Möglichkeit, z.B. Triggersignale für Messaufnehmer zu versenden oder auch Diagnosemeldungen, wie z.B. die Sperrschichttemperatur der Leistungshalbleiter zusammen mit möglichen Diagnosemeldungen an die zentrale Steuerung zu übertragen.The inventive transfer method offer additionally also diagnostic options, with their help the quality condition of the optical waveguide are checked can. This makes possible, that during routine maintenance aged fiber optic cable even before the failure of the signal transmission could be exchanged. additionally open the channel coded signal transmission yet the possibility, e.g. Trigger signals for Send sensors or diagnostic messages, such as. the junction temperature of the power semiconductors together with potential Transfer diagnostic messages to the central controller.
Die Erfindung sowie weitere vorteilhafte Ausgestaltungen der Erfindung gemäß den Merkmalen der Unteransprüche werden im Folgenden anhand von schematisch dargestellten Ausführungsbeispielen in den Zeichnungen näher erläutert, ohne dass dadurch eine Beschränkung der Erfindung auf diese Ausführungsbeispiele erfolgt; es zeigen:The Invention and further advantageous embodiments of the invention according to the characteristics of under claims will be described below with reference to schematically illustrated embodiments closer in the drawings explains without that being a limitation the invention to these embodiments he follows; show it:
Die
zentrale Steuerung
Zusätzlich zur Übertragung
von Schaltinformationen an die Leistungshalbleiterschalter können auch
weitere beliebige Steuerbefehle (z.B. Messbefehle) an die dezentralen
Steuerungen oder Leistungshalbleiterschalter (
Generell kann die Übertragung auch mit Hilfe von Transformatoren, auch Planartransformatoren, anstatt mit Lichtwellenleitern durchgeführt werden.As a general rule can the transmission also with the help of transformers, also planar transformers, instead performed with optical fibers become.
Weiterhin
kann jede einzelne dezentrale Steuerung
Die
zentrale Steuerung
Die
zentrale Steuerung
In
einem Datenblock
Claims (26)
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DE102005045957A DE102005045957A1 (en) | 2005-09-26 | 2005-09-26 | Signal transmission method between a central control and decentralized controls and device uses power semiconductor having at least two switch condition and radio or light guide transmission |
PCT/EP2006/065028 WO2007036379A2 (en) | 2005-09-26 | 2006-08-03 | Method and device for transmitting signals |
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