CN104158853A - Manchester-code-based power electronic conversion system communication control framework - Google Patents
Manchester-code-based power electronic conversion system communication control framework Download PDFInfo
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Abstract
The invention belongs to the field of power electronic conversion system communication control, and particularly relates to a Manchester-code-based power electronic conversion system communication control framework. According to the invention, the Manchester code with self-synchronizing communication characteristic is adopted as the communication platform; a high-power current transformer centralization control framework and a parallel networking thereof, and distributed control frameworks such as a three-phase distributed chain and a multiphase multilevel modularized structure are adopted; the communication modes are directly applied to power electronic module communication control such as a digital IGBT driver. The Manchester-code-based power electronic variable current system communication control framework has the characteristic of self-synchronizing communication, is simple in realization method, is high in communication rate, is good in reliability, is convenient to make communication protocol, and can satisfy the requirement of communication application on the high-power power electronic conversion system and other power electronic modules.
Description
Technical field
The invention belongs to electronic power conversion system communication control field, a kind of distant serial synchronous telecommunications based on Manchester Code/decode being specifically related in electronic power conversion system is controlled framework.
Background technology
Along with improving constantly of electronic power conversion system power grade, system intelligent, reliability and the maintainable more and more harshness that requires.Electronic power conversion system communication is controlled framework as the control axis of converter system, most important to the reliable and stable operation of device.At present, for the control framework of electronic power conversion system, substantially all adopt and take Programmable Logic Controller as control core, the centralized control framework based on serial optical fiber communication or distributed control framework.Wherein, centralized control framework is simple, reliable, is applicable to the converter system of the comparatively simple middle low power of topological structure and hardware configuration.But its a large amount of point-to-point communication has obviously increased failure rate and the maintenance difficulties of controller; The conventional serial communication mode adopting, traffic rate is low, the error rate is high, is unfavorable for the uploading in real time of state information of power device; Complicated Control on Communication and interface have consumed a large amount of time and the hardware resources of controller, are unfavorable for bringing into play the Optimal calculation performance of controller.The applicable topological structure of distributed control mode and hardware configuration present the middle great power conversion circuit system of distributed nature, and the modularization of control system, standardization and intelligent degree are high.Adopt at present the current transformer of distributed control framework to mainly contain three-phase bridge converter, H bridge cascade converter and multi-phase multi-level Modularized current transformer.For three-phase bridge converter and H bridge cascade converter topological structure, adopt and to using single-phase module as the distributed control framework of basic control unit, every phase control device and master controller are realized by single fiber chain serial communication link.Because distributed communication link adopts existing serial bus communication mode, traffic rate is mostly below 2.5Mbps, be difficult to meet the transmission of a large amount of real time datas, order between each phase control device and master controller, control system real-time is not high, has limited the application of the high switching frequency of power device of this kind of control framework.In addition each phase power cell is many, and signal connects and sequencing control complexity.For multi-phase multi-level Modularized current transformer topological structure, all module nodes form ring network by single fiber, adopt high speed serialization optical fiber communication mode between node.Data between this kind of control network great deal of nodes and reception, transmission, the transmission of order cause larger network delay, control system is synchronously processed complexity, communication protocol and hardware designs difficulty are large, cost is high, has seriously hindered distributed type high speed serial optical fiber ring network control mode applying in great power conversion circuit system.In a word, the Control on Communication framework based on conventional serial optical fiber communication that existing electronic power conversion system adopts, otherwise traffic rate is lower, and the error rate is high, can not meet transfer of data requirement and the application of high switch frequency domain; Control on Communication is complicated, is difficult to be widely applied.Therefore, consider the electromagnetic environment of electronic power conversion system complex, intellectuality, high reliability and high required communication rate, develop a kind of based on control framework succinct, distant serial synchronous telecommunications pattern that reliable, antijamming capability is strong, transmission rate is high, for enriching electronic power conversion system communication, control, overcome existing communication and control the difficult problem existing in framework, the communicating requirement that meets other power electronics application scenarios has important function.
Manchester code claims again diphase code, is a kind of self synchronous coded system.This coded system is coded in clock information in data flow, in transmitting data information, also encoded clock information is transferred to receiving terminal together, realizes motor synchronizing decoding sufficient bit timing information is provided for receiving terminal.At present, Manchester code is widely used in the small-power occasions such as Ethernet local area network (LAN), petroleum exploration logging, in power electronic system field, is not also applied.The Control on Communication framework of the electronic power conversion system based on Manchester code, utilize the characteristic of Manchester code motor synchronizing encoding and decoding, can realize under the condition of high speed reliable communication, saving complicated Control on Communication processes, reduce the complexity of communication control system design of hardware and software, meeting existing centralized, distributed converter topologies and other electric power electronic module communications applications conditions, is a kind of Control on Communication framework that is worth exploration.
Summary of the invention
For above-mentioned technical problem, the invention provides a kind of Control on Communication framework of the electronic power conversion system based on Manchester code, take the lead in Manchester code to be applied in electronic power conversion system communication control, traffic rate is high, implementation is simple, unfailing performance is good, meets most electronic power conversion system communication and controls and other electric power electronic module communications applications requirements.
The invention provides a kind of Control on Communication framework of the electronic power conversion system based on Manchester code, comprise supervisory controller and function control device, function control device is electrically connected to supervisory controller by optical fiber, function control device is electrically connected to device for power switching by optical fiber, supervisory controller comprises host computer and master controller, host computer comprises application management control module and the signal processing module of electrical connection, and application management control module realizes man-machine interaction; Process, the communicate by letter encoding and decoding and carry out corresponding communication protocol of master controller executive signal.The optical fiber interface of host computer is electrically connected to the optical fiber interface of master controller.Master controller comprises the algorithm and signal processing module and the coding/decoding module of communicating by letter of electrical connection, and algorithm is electrically connected to optical fiber interface with signal processing module, and communication coding/decoding module is electrically connected to high speed fibre transceiver module, function control device comprises high speed fibre transceiver module, optical fiber interface, PWM drives signaling module, feedback signal module, the high-speed and high-density FPGA that the communication coding/decoding module being electrically connected to and signal processing module composition control function are core, described high speed fibre transceiver module is electrically connected to communicate by letter coding/decoding module and master controller high speed fibre transceiver module, the output of signal processing module drives the input of signaling module to be connected with PWM, the output of feedback signal module is connected with the input of signal processing module, PWM drives the output of signaling module, the input of feedback signal module is electrically connected to optical fiber interface, described optical fiber interface is electrically connected to corresponding device for power switching.Function control device is connected with host computer by optical fiber cable, and function control device is by the direct power ratio control switching device of optical fiber interface.Between function control device and supervisory controller, adopt the communication mode of Manchester code, rather than traditional serial communication mode.Master controller mainly carries out and host computer communication, closed loop control algorithm and and phase control device between data command communication.Function control device is mainly carried out with master controller and is carried out data communication, according to the order of host computer, produces PWM control impuls and switching device is implemented to control protection, and the state information that received power switching device is uploaded and corresponding signal are processed.FPGA mainly realizes the encoding and decoding of communication data and a large amount of real-time, logical signals processed, and produces the logical signal of power ratio control module; High speed fibre transceiver module is realized the high speed sending and receiving of fiber data; PWM drives signaling module to produce corresponding switch control wave according to the logical signal of FPGA; Signal processing module sends PWM to optical fiber interface and drives signal, by optical fiber, makes it be sent to device for power switching.Optical fiber interface is directly connected by optical fiber cable with IGBT module, the switch motion of power ratio control module, and optical fiber interface is sent to signal processing module by the feedback signal of the device for power switching receiving after feedback signal resume module.
Described function control device comprises three-phase function control device, the high speed fibre transceiver module of master controller is electrically connected to the high speed fibre transceiver module of A phase function control device, B phase function control device and C phase function control device respectively by optical fiber, and the optical fiber interface of A phase function control device, B phase function control device and C phase function control device is electrically connected to corresponding power cell device respectively.Between master controller and each phase function control device, adopt the high speed fibre serial communication based on Manchester code.Host computer, master controller, A, B, C three-phase form the distributed chain Control on Communication of master-slave mode three-phase framework from controller.Host computer comprises optical fiber interface, signal processing and application management control module, mainly carries out upper strata control command and communication.Master controller comprises optical fiber interface, and FPGA and DSP process core, high speed fibre transceiver module and corresponding peripheral circuit thereof.Between master controller and host computer by optical fiber communication.The send and receive of the main executing data order of master controller, the execution of system closed loop control algorithm.Three phase controllers includes high speed fibre transceiver module, control core FPGA, and PWM drives signaling module, feedback signal module, optical fiber interface, and corresponding peripheral circuit.A, B, C phase control device are identical in function, are responsible for control and the communication thereof of each phase power model unit.Each phase function control device is mainly carried out the feedback of the data command, the generation of pwm control signal and the control protection of switching tube and the power device state information that receive master controller transmission and is uploaded.Between master controller and three phase controllers, adopt high speed fibre to connect, realize the high speed data transfer based on Manchester code.
Described function control device comprises heterogeneous function control device, the height optical fiber receiver-transmitter module of master controller and the high speed fibre transceiver module of each phase function control device are connected mutually by optical fiber, master controller and heterogeneous function control device cooperatively interact and are connected to form loop network by single fiber, and the optical fiber interface of each phase function control device is connected with corresponding power model unit.Master controller is the host node of described loop network, each phase function control device be in described loop network from node, transfer of data between all nodes adopts the high speed serialization Optical Fiber Transmission mode based on Manchester code.Host computer, master controller and heterogeneously from nodal function controller, form heterogeneous multimode distributed looped network Control on Communication framework.Host computer comprises application management control module, signal processing module and fiber optic data communication interface thereof, mainly realizes the execution of top layer control command.Master controller comprises the optical fiber interface with host computer direct communication, the control core FPGA and the DSP that algorithm, consist of with the coding/decoding module of communicating by letter with signal processing module, high speed fibre transceiver module, and corresponding peripheral circuit.From each phase function control device of node, comprise high speed fibre transceiver module, control core FPGA, PWM drives signaling module, feedback signal module, optical fiber interface, and corresponding peripheral circuit.Each is identical on function from each function control device of node, is responsible for the control protection of each modular power cells, and the transmission that completes looped network data command.Host node sends each from node required control data and order by optical fiber ring network, and electric parameter and the state information of the node power module feeding back from node according to each, carries out corresponding closed loop control algorithm.Each receives the data command of host node from node; carry out the control protection of this node power model; and the state information of uploading this node is to ring network, forwards master controller simultaneously and issues the state information that upload from data command and the upstream node of node in downstream.
The invention provides a kind of Manchester code decoding method, said method comprising the steps of:
A. by data to be encoded input communication coding module, when data to be encoded are " 1 ", be encoded to " 10 "; When data to be encoded are " 0 ", be encoded to " 01 ", utilize the tranmitting data register of twice data frequency that coded data is sent to decoder module by turn, simultaneously for coded data is added the synchronizing frame head of 3bit " 111 " and the postamble of 3bit " 000 " as the starting and ending of frame data;
B. decoder module is when receiving effective serial code code stream, utilize the high-frequency count clock of 5 haplotype data frequencies that each level duration in encoding code stream is sampled, counted, synchronous local counting clock and encoding code stream synthesize synchrodata, when the level saltus step of synchrodata, reset counter produces clock-reset pulse;
C. when counting clock count down to that high level lasting time is 3bit bit wide in preamble data, think and recognize synchronizing frame head, and start synthetic synchronous decoding clock;
D. reset counter, according to the synchrodata in encoding code stream, utilizes counting clock counting, and when the rolling counters forward synchrodata current level duration is 1bit bit wide, retaining the current hopping edge of synchrodata is effective hopping edge; When the counting synchrodata current level duration is 2bit bit wide, retaining the current hopping edge of synchrodata is effective hopping edge;
E. when the moment that reset pulse corresponding to effective hopping edge of synchrodata produces trailing edge, synchronous decoding clock generating rising edge;
F. utilize the radix-minus-one complement of the rising edge sample-synchronous data of synthetic synchronous decoding clock, when synchronous decoding clock signal produces rising edge, decoded data is exported synchrodata radix-minus-one complement signal corresponding to this moment, and decoded data output the most at last.
In above-mentioned encoding-decoding process, the bit rate of transfer of data is 1/5th of FPGA processing speed.
In the Control on Communication framework of the described electronic power conversion system based on Manchester code, the FPGA being comprised of communication coding/decoding module and signal processing module adopts Manchester Code/decode method, adopts the high speed fibre serial communication based on Manchester Code/decode method between the FPGA of each phase function control device of described master controller and bottom.
The present invention has motor synchronizing communication characteristic.This communication framework is utilized the motor synchronizing encoding and decoding characteristic of Manchester code, data receiver makes full use of the bit synchronization information in serial data stream, realize the synchronous reception of bits per inch certificate, effectively eliminated the error of transmission bringing when continuous " 1 " or " 0 " appears in factor data receiving-transmitting sides frequency difference in single fiber serial data transmission, transmission delay or transmission data.Traffic rate of the present invention is high.The use of high density high speed FPGA realizes high-speed communication for framework and lays a good foundation.At present, the processing speed of FPGA is up to hundreds of megahertz, the Manchester Code/decode that programming realizes based on FPGA, and the communication bit rate of data is 1/5th of FPGA processing speed, can reach tens megabits per second, and traffic rate can be adjusted flexibly.While being 100MHz as the highest point reason speed as FPGA, data communication bit rate can reach 20Mbps, can meet Control on Communication and other electric power electronic module communications applications requirements of most of converter system.The present invention is simple, and realizability is good.Serial data transmission Control on Communication framework based on Manchester code, only need to programme and can realize single fiber motor synchronizing data communication by FPGA, saved the special synchronous chip using in traditional communication control chip and high speed optical fiber communication network, reduce the programming complexity that clock synchronous is processed, simplified the design of hardware and software of system.Applied range of the present invention.This Control on Communication framework aims to provide a kind of succinct, reliable, data transfer platform at a high speed.Based on this platform, for different control objects and communicating requirement, pass through to formulate different communication protocol, meet multifarious application requirements.This Control on Communication framework can be applied in the combination control of centralized control mode, distributed control mode and two kinds of modes easily, also can be applied in the strict electric power electronic modules such as digital IGBT driver of hardware space resource requirement.Antijamming capability of the present invention is strong, and reliability is high.This Control on Communication framework takes full advantage of the motor synchronizing communication characteristic of Manchester code, and coded data is transmitted in channel with the form of bi-directional code, does not comprise DC component in code stream power spectrum, has good interference free performance.Add the advantage of optical fiber communication, guaranteed the high reliability of the transfer of data under power electronic system strong electromagnetic interference environment.Communication protocol of the present invention is formulated convenient.This Control on Communication framework utilizes there will not be of Manchester code to surpass continuously the level nature of 3 bit codes stream bit wides, can set easily and using the high and low level of 3 bit codes stream bit wides as frame head and the postamble of Frame, to improve the validity of transfer of data.
Accompanying drawing explanation
Fig. 1 is that the high-power converter centralized communication based on Manchester code is controlled framework schematic diagram;
Fig. 2 is that framework schematic diagram is controlled in the 3-phase power converter distributed communication based on Manchester code;
Fig. 3 is the Modularized current transformer distributed looped network Control on Communication framework schematic diagram based on Manchester code;
Fig. 4 is the FPGA realization flow figure of the Manchester Code/decode that uses in framework of the present invention;
Embodiment
Below in conjunction with Figure of description and specific embodiment, the invention will be further described.
The invention provides a kind of Control on Communication framework of the electronic power conversion system based on Manchester code, comprise supervisory controller and function control device, function control device is electrically connected to supervisory controller by optical fiber, function control device is electrically connected to device for power switching by optical fiber, supervisory controller comprises host computer and master controller, host computer comprises application management control module and the signal processing module of electrical connection, the optical fiber interface of host computer is electrically connected to the optical fiber interface of master controller, master controller comprises the algorithm and signal processing module and the coding/decoding module of communicating by letter of electrical connection, algorithm is electrically connected to optical fiber interface with signal processing module, communication coding/decoding module is electrically connected to high speed fibre transceiver module, function control device comprises high speed fibre transceiver module, optical fiber interface, PWM drives signaling module, feedback signal module, the high-speed and high-density FPGA that the communication coding/decoding module being electrically connected to and signal processing module composition control function are core, described high speed fibre transceiver module is electrically connected to communicate by letter coding/decoding module and master controller high speed fibre transceiver module, the output of signal processing module drives the input of signaling module to be connected with PWM, the output of feedback signal module is connected with the input of signal processing module, PWM drives the output of signaling module, the input of feedback signal module is electrically connected to optical fiber interface, described optical fiber interface is electrically connected to corresponding device for power switching.Function control device is connected with host computer by optical fiber cable, and function control device is by the direct power ratio control switching device of optical fiber interface.Between function control device and supervisory controller, adopt the communication mode of Manchester code, rather than traditional serial communication mode.Master controller mainly carries out and host computer communication, closed loop control algorithm and and phase control device between data command communication.Function control device is mainly carried out with master controller and is carried out data communication, according to the order of host computer, produces PWM control impuls and switching device is implemented to control protection, and the state information that received power switching device is uploaded and corresponding signal are processed.FPGA mainly realizes the encoding and decoding of communication data and a large amount of real-time, logical signals processed, and produces the logical signal of power ratio control module; High speed fibre transceiver module is realized the high speed sending and receiving of fiber data; PWM drives signaling module to produce corresponding switch control wave according to the logical signal of FPGA; Signal processing module sends PWM to optical fiber interface and drives signal, by optical fiber, makes it be sent to device for power switching.Optical fiber interface is directly connected by optical fiber cable with IGBT module, the switch motion of power ratio control module, and optical fiber interface is sent to signal processing module by the feedback signal of the device for power switching receiving after feedback signal resume module.
In technique scheme, function control device comprises three-phase function control device, the high speed fibre transceiver module of master controller is electrically connected to the high speed fibre transceiver module of A phase function control device, B phase function control device and C phase function control device respectively by optical fiber, and the optical fiber interface of A phase function control device, B phase function control device and C phase function control device is electrically connected to corresponding power cell device respectively.
In technique scheme, function control device comprises heterogeneous function control device, the height optical fiber receiver-transmitter module of master controller and the high speed fibre transceiver module of each phase function control device are connected mutually by optical fiber, live controller and heterogeneous function control device and complement each other to form ring network, the optical fiber interface of each phase function control device is connected with corresponding power model unit.Power model unit is comprised of corresponding power cell device.
As shown in Figure 1, between the FPGA in bottom function control device of the present invention and supervisory controller, adopt the communication mode of Manchester code, rather than traditional serial communication mode.The order that master controller reception host computer sends also transmits feedback information to it.Master controller receives after the order that host computer sends, and utilizes signal processing module, with the coding/decoding module of communicating by letter, order data is converted to Manchester code and by high speed fibre transceiver module, is sent to the FPGA of bottom function control device.The command information that the signal processing module of function control device sends the upper seat in the plane of described Manchester code conversion with the coding/decoding module of communicating by letter.Function control device is mainly carried out with supervisory controller and is carried out data communication.Function control device produces PWM according to the order of host computer and drives signal to be sent to device for power switching by optical fiber interface, and switching device is implemented to control protection; The state information that simultaneously received power switching device is uploaded is sent to signal processing module after by feedback data resume module.The signal processing module of function control device is sent to master controller by high speed fibre transceiver module after described state information being converted to Manchester code with the coding/decoding module of communicating by letter.Master controller utilizes signal processing module with the coding/decoding module of communicating by letter, the Manchester code code stream receiving to be converted to feedback data and to be sent to host computer.Centralized control framework also comprises the frequency converter framework in parallel that adopts centralized control, and the communication between parallel connection frequency conversion device also adopts the communication mode of Manchester code, guarantees simple Control on Communication efficiently between framework in parallel.
As shown in Figure 2, the high-power converter application mainly for three-phase bridge and H bridge cascade structure, comprises host computer, master controller and three phase function control devices to the distributed chain Control on Communication of three-phase framework based on Manchester code.Master controller mainly carries out and host computer communication, closed loop control algorithm and and phase control device between data command communication.Phase function control device is mainly carried out the feedback of the data command, the generation of pwm control signal and the control protection of switching tube and the power device state information that receive master controller transmission and is uploaded.Host computer, master controller, A, B, C three-phase form the distributed chain Control on Communication of master-slave mode three-phase framework from controller.Host computer comprises optical fiber interface, signal processing and application management control module, mainly carries out upper strata control command and communication.Master controller comprises optical fiber interface, the control core FPGA and the DSP that algorithm, consist of with the coding/decoding module of communicating by letter with signal processing module, high speed fibre transceiver module and corresponding peripheral circuit thereof.Between master controller and host computer by optical fiber communication.The send and receive of the main executing data order of master controller, the execution of system closed loop control algorithm.Three phase controllers includes high speed fibre transceiver module, control core FPGA, and PWM drives signaling module, feedback signal module, optical fiber interface, and corresponding peripheral circuit.A, B, C phase control device are identical in function, are responsible for control and the communication thereof of each phase power model unit.Each phase function control device is mainly carried out the feedback of the data command, the generation of pwm control signal and the control protection of switching tube and the power device state information that receive master controller transmission and is uploaded.Between master controller and three phase controllers, adopt high speed fibre to connect, realize the high speed data transfer based on Manchester code.
Multi-phase multi-level modularized distribution type looped network Control on Communication framework based on Manchester code as shown in Figure 3, master controller is the host node of described loop network, each phase function control device be in described loop network from node, transfer of data between all nodes adopts the high speed serialization Optical Fiber Transmission mode based on Manchester code.Host computer is carried out the application management of whole system and is controlled.Host computer, master controller and the heterogeneous function control device from node are connected to form heterogeneous multimode distributed looped network Control on Communication framework by single fiber, and the transfer of data between all nodes adopts the high speed serialization Optical Fiber Transmission mode based on Manchester code.Host node sends each from node required control data and order by optical fiber ring network, and electric parameter and the state information of the node power module feeding back from node according to each, carries out corresponding closed loop control algorithm.Each receives the data command of host node from node; carry out the control protection of this node power model; and the state information of uploading this node is to ring network, forwards master controller simultaneously and issues the state information that upload from data command and the upstream node of node in downstream.Host computer comprises application management control module, signal processing module and fiber optic data communication interface thereof, mainly realizes the execution of top layer control command.Master controller comprises the optical fiber interface with host computer direct communication, the control core FPGA and the DSP that algorithm, consist of with the coding/decoding module of communicating by letter with signal processing module, high speed fibre transceiver module, and corresponding peripheral circuit.From each phase function control device of node, comprise high speed fibre transceiver module, control core FPGA, PWM drives signaling module, feedback signal module, optical fiber interface, and corresponding peripheral circuit.Each is identical on function from each function control device of node, is responsible for the control protection of each modular power cells, and the transmission that completes looped network data command.
The invention provides a kind of Manchester code decoding method, comprise the following steps:
A. by data to be encoded input communication coding module, when data to be encoded are " 1 ", be encoded to " 10 "; When data to be encoded are " 0 ", be encoded to " 01 ", utilize the tranmitting data register of twice data frequency that coded data is sent to decoder module by turn, simultaneously for coded data is added the synchronizing frame head of 3bit " 111 " and the postamble of 3bit " 000 " as the starting and ending of frame data;
B. decoder module is when receiving effective serial code code stream, utilize the high-frequency count clock of 5 haplotype data frequencies that each level duration in encoding code stream is sampled, counted, synchronous local counting clock and encoding code stream synthesize synchrodata, when the level saltus step of synchrodata, reset counter produces clock-reset pulse;
C. when counting clock count down to that high level lasting time is 3bit bit wide in preamble data, think and recognize synchronizing frame head, and start synthetic synchronous decoding clock;
D. reset counter, according to the synchrodata in encoding code stream, utilizes counting clock counting, and when the rolling counters forward synchrodata current level duration is 1bit bit wide, retaining the current hopping edge of synchrodata is effective hopping edge; When the counting synchrodata current level duration is 2bit bit wide, retaining the current hopping edge of synchrodata is effective hopping edge;
E. when the moment that reset pulse corresponding to effective hopping edge of synchrodata produces trailing edge, synchronous decoding clock generating rising edge;
F. utilize the radix-minus-one complement of the rising edge sample-synchronous data of synthetic synchronous decoding clock, when synchronous decoding clock signal produces rising edge, decoded data is exported synchrodata radix-minus-one complement signal corresponding to this moment, and decoded data output the most at last.
In above-mentioned encoding-decoding process, the bit rate of transfer of data is 1/5th of FPGA processing speed.
The FPGA being comprised of communication coding/decoding module and signal processing module in the present invention adopts Manchester Code/decode method, adopts the high speed fibre serial communication based on Manchester Code/decode method between the FPGA of each phase function control device of described master controller and bottom.
In described control framework, the communication mode based on Manchester code all adopts that FPGA programming realizes take the single fiber high speed serialization synchronous communication that Manchester code is transmission medium.Utilize FPGA software programming to realize the communication coding/decoding module of Manchester code.Data sending terminal carries out Manchester's code transmission by data to be sent by coding/decoding module, receiving terminal is after receiving serial code data flow, by communication coding/decoding module motor synchronizing decoding, obtain communication data order, guarantee terseness, reliability and the good fault-tolerance of transfer of data.The FPGA of described high speed Manchester Code/decode realizes and comprises Manchester's code and decoding two parts, as shown in Figure 4.Transmitting terminal converts respectively initial data to be sent to Manchester code, and utilizes the tranmitting data register of twice data frequency that coded data is sent by turn.Encoding code stream transmits between high speed fibre transceiver module by optical fiber.Receiving terminal is when receiving effective serial code stream, utilize the high-frequency count clock of 5 haplotype data frequencies that each level duration in code stream is sampled, counted, synchronous local counting clock and serial code stream, identify synchronizing frame head, and utilizing the synthetic synchronous decoding clock of bit synchronization information in code stream, decoded data is exported in final sampling.
Except above-mentioned example, the present invention can also have the FPGA way of realization of other Control on Communication framework and corresponding Manchester Code/decode, and all employings are equal to the scheme of replacement or equivalent transformation formation, all drop in the protection range of this patent requirement.Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.The content not being described in detail in this specification belongs to the known prior art of professional and technical personnel in the field.
Claims (6)
1. the Control on Communication framework of the electronic power conversion system based on Manchester code, comprise supervisory controller and function control device, function control device is electrically connected to supervisory controller by optical fiber, function control device is electrically connected to device for power switching by optical fiber, it is characterized in that supervisory controller comprises host computer and master controller, host computer comprises application management control module and the signal processing module of electrical connection, the optical fiber interface of host computer is electrically connected to the optical fiber interface of master controller, master controller comprises the algorithm and signal processing module and the coding/decoding module of communicating by letter of electrical connection, algorithm is electrically connected to optical fiber interface with signal processing module, communication coding/decoding module is electrically connected to high speed fibre transceiver module, function control device comprises high speed fibre transceiver module, optical fiber interface, PWM drives signaling module, feedback signal module, the high-speed and high-density FPGA that the communication coding/decoding module being electrically connected to and signal processing module composition control function are core, described high speed fibre transceiver module is electrically connected to communicate by letter coding/decoding module and master controller high speed fibre transceiver module, the output of signal processing module drives the input of signaling module to be connected with PWM, the output of feedback signal module is connected with the input of signal processing module, PWM drives the output of signaling module, the input of feedback signal module is electrically connected to optical fiber interface, described optical fiber interface is electrically connected to corresponding device for power switching.
2. the Control on Communication framework of the electronic power conversion system based on Manchester code according to claim 1, it is characterized in that function control device comprises three-phase function control device, the high speed fibre transceiver module of master controller is electrically connected to the high speed fibre transceiver module of A phase function control device, B phase function control device and C phase function control device respectively by optical fiber, and the optical fiber interface of A phase function control device, B phase function control device and C phase function control device is electrically connected to corresponding power cell device respectively.
3. the Control on Communication framework of the electronic power conversion system based on Manchester code according to claim 1, it is characterized in that function control device comprises heterogeneous function control device, the height optical fiber receiver-transmitter module of master controller and the high speed fibre transceiver module of each phase function control device are connected mutually by optical fiber, master controller and heterogeneous function control device complement each other to form ring network, and the optical fiber interface of each phase function control device is connected with corresponding power model unit.
4. a Manchester code decoding method, is characterized in that said method comprising the steps of:
A. by data to be encoded input communication coding module, when data to be encoded are " 1 ", be encoded to " 10 "; When data to be encoded are " 0 ", be encoded to " 01 ", utilize the tranmitting data register of twice data frequency that coded data is sent to decoder module by turn, simultaneously for coded data is added the synchronizing frame head of 3bit " 111 " and the postamble of 3bit " 000 " as the starting and ending of frame data;
B. decoder module is when receiving effective serial code code stream, utilize the high-frequency count clock of 5 haplotype data frequencies that each level duration in encoding code stream is sampled, counted, synchronous local counting clock and encoding code stream synthesize synchrodata, when the level saltus step of synchrodata, reset counter produces clock-reset pulse;
C. when counting clock count down to that high level lasting time is 3bit bit wide in preamble data, think and recognize synchronizing frame head, and start synthetic synchronous decoding clock;
D. reset counter, according to the synchrodata in encoding code stream, utilizes counting clock counting, and when the rolling counters forward synchrodata current level duration is 1bit bit wide, retaining the current hopping edge of synchrodata is effective hopping edge; When the counting synchrodata current level duration is 2bit bit wide, retaining the current hopping edge of synchrodata is effective hopping edge;
E. when the moment that reset pulse corresponding to effective hopping edge of synchrodata produces trailing edge, synchronous decoding clock generating rising edge;
F. utilize the radix-minus-one complement of the rising edge sample-synchronous data of synthetic synchronous decoding clock, when synchronous decoding clock signal produces rising edge, decoded data is exported synchrodata radix-minus-one complement signal corresponding to this moment, and decoded data output the most at last.
5. Manchester code decoding method according to claim 4, the bit rate that it is characterized in that transfer of data in encoding-decoding process is 1/5th of FPGA processing speed.
6. according to the Control on Communication framework of the electronic power conversion system based on Manchester code described in claim 1-3, it is characterized in that the FPGA being comprised of communication coding/decoding module and signal processing module adopts Manchester Code/decode method, adopts the high speed fibre serial communication based on Manchester Code/decode method between the FPGA of each phase function control device of described master controller and bottom.
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| CN105553239A (en) * | 2016-02-19 | 2016-05-04 | 天津电气科学研究院有限公司 | Frequency converter parallel control method for master-slave parallel and separated control |
| CN105739393A (en) * | 2016-04-22 | 2016-07-06 | 艾德克斯电子（南京）有限公司 | High-speed real-time power supply parallel connection system |
| CN105739393B (en) * | 2016-04-22 | 2018-04-06 | 艾德克斯电子（南京）有限公司 | A kind of high speed live electrical power parallel system |
| CN107293108A (en) * | 2017-08-30 | 2017-10-24 | 贝分科技（杭州）有限公司 | Applied to the infrared data communication device of sorting system, method and sorting system |
| US20220052598A1 (en) * | 2018-12-18 | 2022-02-17 | Siemens Aktiengesellschaft | Method for controlling semiconductors |
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| CN109639123A (en) * | 2019-01-31 | 2019-04-16 | 大禹电气科技股份有限公司 | A kind of synchronous driving method of the more IGBT clocks of high-voltage frequency converter and system |
| CN109639123B (en) * | 2019-01-31 | 2020-08-14 | 大禹电气科技股份有限公司 | Multi-IGBT clock synchronous driving method and system of high-voltage frequency converter |
| CN111786546A (en) * | 2020-07-20 | 2020-10-16 | 中车青岛四方车辆研究所有限公司 | Power module driving system and control method |
| CN111786546B (en) * | 2020-07-20 | 2021-10-15 | 中车青岛四方车辆研究所有限公司 | Power module driving system and control method |
| CN111934537B (en) * | 2020-08-21 | 2023-07-21 | 湖北师范大学 | Anti-interference method for driving signals of cascade converter |
| CN111934537A (en) * | 2020-08-21 | 2020-11-13 | 湖北师范大学 | Anti-interference method for driving signal of cascade converter |
| CN113224838A (en) * | 2021-03-30 | 2021-08-06 | 中国人民解放军海军工程大学 | Fifteen-phase large-capacity induction propulsion frequency converter control framework |
| CN113725918A (en) * | 2021-09-23 | 2021-11-30 | 国电南瑞科技股份有限公司 | Multi-loop parallel synchronization method and system for high-power wind power converter |
| CN114237091A (en) * | 2021-11-17 | 2022-03-25 | 中国人民解放军海军工程大学 | Power electronic converter state data acquisition device |
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