CN113824296A - Control system and method of converter, converter and wind generating set - Google Patents

Control system and method of converter, converter and wind generating set Download PDF

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Publication number
CN113824296A
CN113824296A CN202010560427.2A CN202010560427A CN113824296A CN 113824296 A CN113824296 A CN 113824296A CN 202010560427 A CN202010560427 A CN 202010560427A CN 113824296 A CN113824296 A CN 113824296A
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China
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slave station
communication link
station controller
controller
stage
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CN202010560427.2A
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Chinese (zh)
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林振斌
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Xinjiang Goldwind Science and Technology Co Ltd
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Xinjiang Goldwind Science and Technology Co Ltd
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Priority to CN202010560427.2A priority Critical patent/CN113824296A/en
Publication of CN113824296A publication Critical patent/CN113824296A/en
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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
    • H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
    • H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
    • H02M1/092—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices the control signals being transmitted optically
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/40006—Architecture of a communication node
    • H04L12/40013—Details regarding a bus controller

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)

Abstract

The application provides a control system and method of a converter, the converter and a wind generating set. The control system of this converter includes: a master controller and a plurality of parallel communication links; each communication link comprises a system downlink communication link and a system uplink communication link which are formed by a plurality of stages of slave station controllers connected in series; the first-level slave station controller in each communication link is in communication connection with the master controller; in each communication link, a system downlink communication link and a system uplink communication link are used for realizing communication between each level of slave station controller and master controller in the communication link. The method and the device can meet the actual requirements of the number of the nodes on the basis of not redesigning the main controller and not influencing the original control framework, improve the development efficiency of new complete machine products, and reduce the research and development cost of the new complete machine products.

Description

Control system and method of converter, converter and wind generating set
Technical Field
The application relates to the technical field of converters, in particular to a control system and method of a converter, the converter and a wind generating set.
Background
The current transformer is developing towards high power, which results in more and more high-power current transformers, and is limited by power and cost of a single Insulated Gate Bipolar Transistor (IGBT), and most current transformers adopt a multi-parallel technology. With the increase of the total power, the number of the IGBTs required to be connected in parallel is more and more, and due to the modular design, the number of the functional modules required to be controlled by the controller in the converter is more and more.
In the current transformer in the past, the controllers are mainly connected by adopting a star network, and the connection mode has the following problems: the controller is a star network master node, the number of star branches of the controller limits the number of connected lower-level nodes, the number of lower-level nodes of the controller cannot meet the requirement at last due to the fact that the requirement is continuously increased, or the size of the controller becomes extremely large, the controller needs to be designed again every time the lower-level topological structure changes, the version of the controller is increased, and research and development cost and maintenance cost are improved; the communication of the lower node is not the same source, and the routing paths are not consistent, so that the synchronization difference is generated, and the synchronization is easy to be not satisfied.
Disclosure of Invention
The control system and method of the converter, the converter and the wind generating set are provided aiming at the defects of the existing mode, and the control system and method of the converter are used for solving the technical problem that the existing controller connection mode limits the number of subordinate nodes and the problem of synchronization difference caused by different sources of subordinate node communication.
In a first aspect, an embodiment of the present application provides a control system for a converter, including: a master controller and a plurality of parallel communication links;
each communication link comprises a system downlink communication link and a system uplink communication link which are formed by a plurality of stages of slave station controllers connected in series;
the first-level slave station controller in each communication link is in communication connection with the master controller;
in each communication link, a system downlink communication link and a system uplink communication link are used for realizing communication between each level of slave station controller and master controller in the communication link.
In a second aspect, an embodiment of the present application provides a current transformer, including: the control system of the converter provided by the first aspect of the embodiment of the application, and at least one functional module;
each function module is connected to a slave station controller in the control system.
In a third aspect, an embodiment of the present application provides a wind turbine generator system, including: the second aspect of the embodiments of the present application provides a current transformer.
In a fourth aspect, an embodiment of the present application provides a control method for a converter, which is applied to the control system for the converter provided in the first aspect of the embodiment of the present application;
the control method comprises the following steps:
in each communication link of the control system, a master controller issues control data packets to all levels of slave controllers through a system downlink communication link, and receives feedback data packets which are uploaded by all levels of slave controllers through a system uplink communication link and aim at the control data packets;
each level of slave station controller identifies control data aiming at the slave station controller of the level from the control data packet, and executes corresponding operation according to the control data;
after each stage of slave station controller recognizes the control data, the feedback data packet of the slave station controller of the stage is uploaded to the master controller through the system uplink communication link, or after the next stage of slave station controller completes the sending of the feedback data packet of the next stage of slave station controller, the feedback data packet of the slave station controller of the stage is uploaded to the master controller through the system uplink communication link.
The technical scheme provided by the embodiment of the application at least has the following beneficial effects:
1) according to the embodiment of the application, a plurality of parallel communication links are arranged on the basis of a main controller, and the number of star-shaped branches of the main controller is determined in the form of the communication links; the multi-level slave controllers connected in series are arranged in each communication link, each level of slave controllers can communicate with the main controller through a system downlink communication link and a system uplink communication link, namely, the control function of the main controller is expanded through the slave controllers and the formed system downlink communication link and system uplink communication link.
2) The communication in each communication link of the embodiment of the application is derived from the same signal, and the relative communication path is unique, so that the synchronism among slave station controllers in the communication links is improved, the control precision is improved, and the product reliability is improved.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural framework diagram of a control system of a converter according to an embodiment of the present disclosure;
fig. 2 is a schematic structural framework diagram of a control system of another converter provided in an embodiment of the present application;
FIG. 3 is a schematic structural framework diagram of a slave station controller in the embodiment of the present application;
fig. 4 is a schematic diagram of communication data transmission when a downlink communication link of a secondary station is turned on in the embodiment of the present application;
fig. 5 is a schematic diagram of communication data transmission when a downlink communication link of a slave station is disconnected in the embodiment of the present application.
Detailed Description
Reference will now be made in detail to the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar parts or parts having the same or similar functions throughout. In addition, if a detailed description of the known art is not necessary for illustrating the features of the present application, it is omitted. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
It will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.
The following describes the technical solutions of the present application and how to solve the above technical problems with specific embodiments.
The embodiment of the application provides a wind generating set includes the converter that this application embodiment provided, and the converter that this application embodiment provided includes: the control system of the converter and a plurality of functional modules; each function module is connected with a slave station controller in the control system.
Optionally, the plurality of functional modules of the embodiment of the present application include at least one type of functional module; when the plurality of functional modules comprises a plurality of types of functional modules, for each type, the functional modules in that type are electrically connected to respective slave station controllers in a communication link in the control system of the converter.
By way of example, the types of the functional modules in the embodiments of the present application include, but are not limited to, the following types: the system comprises a machine side power module, a network side power module, a brake module and a general extension module. The universal expansion module is mainly used for expanding resources such as Digital Input Output (DIO), Analog Input (AI), Analog Output (AO), state monitoring and the like.
In the embodiment of the application, the types of the functional modules can be matched and connected with the communication links in the control system of the converter one by one, and each functional module in the same type is matched and connected with each slave station controller in one matched communication link one by one, so that each communication link is grouped according to the type of the connected functional module, and the classification or grouping transmission of data is favorably realized.
As shown in fig. 1, a control system of a converter in an embodiment of the present application includes: a master controller and a plurality of parallel communication links.
Each communication link comprises a system downlink communication link and a system uplink communication link which are formed by a plurality of stages of slave station controllers connected in series; the first-level slave station controller in each communication link is in communication connection with the master controller; in each communication link, a system downlink communication link and a system uplink communication link are used for realizing communication between each level of slave station controller and master controller in the communication link.
The number of the communication links is not limited in the embodiment of the application, and any number of communication links can be set according to actual requirements; in one example, 4 communication links (e.g., communication links 1-4 in fig. 1 and 2) may be provided, with a first level slave station controller (e.g., slave station controllers 1 of the slave station 1 portion of the links in fig. 1 and 2) in each communication link being communicatively coupled to the master controller.
Alternatively, the slave station controllers in each communication link may be connected to the same type of function module, for example, the slave station controllers 1-n in the communication link 1 in fig. 1 and 2 may be connected to the machine side function modules 1-n, respectively, the slave station controllers 1-n in the communication link 2 may be connected to the network side function modules 1-n, the slave station controllers 1-n in the communication link 3 may be connected to the brake modules 1-n, respectively, and the slave station controllers 1-n in the communication link 4 may be connected to the universal expansion modules 1-n, respectively, to implement grouping of the communication links.
The link slaves 1-n of fig. 1 and 2 are used to label the different slave station controllers in the respective communication links, for ease of comparison with the slave station controllers in the different communication links of fig. 1 and 2.
Optionally, as shown in fig. 2, the master controller and the slave controller each include a data processing module and a fiber communication module communicatively connected.
In each communication link, the optical fiber communication module in the first-stage slave station controller is connected with the optical fiber communication module in the main controller through an optical fiber; and between any two adjacent slave station controllers, the optical fiber communication module in the slave station controller at the upper stage is connected with the optical fiber communication module in the slave station controller at the lower stage through an optical fiber.
Optionally, as shown in fig. 3, the fiber communication modules in the master controller and the slave controller each include: the device comprises a downlink optical fiber receiving unit, a downlink optical fiber transmitting unit, an uplink optical fiber receiving unit and an uplink optical fiber transmitting unit.
Between any two adjacent slave station controllers, the downlink optical fiber transmitting unit in the slave station controller of the previous stage is connected with the downlink optical fiber receiving unit in the slave station controller of the next stage through optical fibers; the uplink optical fiber receiving unit in the upper-stage slave station controller is connected with the uplink optical fiber transmitting unit in the lower-stage slave station controller through an optical fiber.
Optionally, in each communication link of the embodiment of the present application, the system downlink communication link may include a path formed after a downlink optical fiber transmitting unit in the slave station controller of a first stage (i.e., the first stage in two adjacent stages) and a downlink optical fiber receiving unit in the slave station controller of a second stage (i.e., the second stage in two adjacent stages) in each two adjacent stages; the system uplink communication link may include a path formed by connecting an uplink fiber receiving unit in the station controller of a first stage (i.e., the first stage in two adjacent stages) and an uplink fiber transmitting unit in the station controller of a second stage (i.e., the second stage in two adjacent stages) in every two adjacent stages.
Optionally, in the embodiment of the present application, bandwidths of the downlink optical fiber receiving unit, the downlink optical fiber transmitting unit, the uplink optical fiber receiving unit, and the uplink optical fiber transmitting unit are not limited, and may be set according to an actual situation, for example, may be set to 50M (megabyte).
In some embodiments, as shown in fig. 3, a data processing module in the slave station controller comprises a first control unit, a slave station downlink communication link and a slave station uplink communication link;
the slave station downlink communication link and the slave station uplink communication link are both electrically connected with the first control unit; the receiving end and the sending end of the slave station downlink communication link are respectively and electrically connected with a downlink optical fiber receiving unit and a downlink optical fiber sending unit in the slave station controller of the current stage; and the receiving end and the transmitting end of the slave station uplink communication link are respectively and electrically connected with the uplink optical fiber receiving unit and the uplink optical fiber transmitting unit of the slave station controller of the current stage.
Optionally, in each communication link of the embodiments of the present application, the system downlink communication link may include a slave station downlink communication link in each slave station controller in the present communication link, and the system uplink communication link may include a slave station uplink communication link in each slave station controller in the present communication link.
Optionally, the data processing module in the main controller may be configured to: detecting whether each level of slave station controllers have faults or not; for the last-stage slave station controller with the fault, controlling the disconnection of a slave station downlink communication link and a slave station uplink communication link in the slave station controller of the previous stage; for any level slave station controller except the last level slave station controller with failure, the conduction state of the slave station downlink communication link and the slave station uplink communication link in the slave station controller is maintained.
In an alternative embodiment, the data processing module may be a ZynQ (processor, a processor, available from Xilinx, saint) chip, the first Control Unit may be an MCU (Micro Control Unit) Unit (PS side) in the ZynQ chip, and the slave downlink communication link and the slave uplink communication link may be communication links in an FPGA (Field-Programmable Gate Array) Unit (PL side) in the ZynQ chip.
In another alternative embodiment, the first control unit may be any one of a MCU, an ARM (Advanced RISC Machines, Advanced reduced instruction set computer), and a DSP (Digital Signal Processor), and the slave downlink communication link and the slave uplink communication link may be communication links in an FPGA chip or a CPLD (Complex Programmable Logic Device) chip.
Optionally, as shown in fig. 3, the secondary station downlink communication link and the secondary station uplink communication link each include: a communication link control unit and a tri-state buffer 301.
One end of the communication link control unit is electrically connected with the first control unit, and the other end of the communication link control unit is electrically connected with the first end of the tri-state buffer 301; the second end and the third end of the tri-state buffer 301 of the slave station downlink communication link are respectively used as the receiving end and the sending end of the slave station downlink communication link, and are respectively electrically connected with the downlink optical fiber receiving unit and the downlink optical fiber sending unit in the slave station controller of the current stage; the second end and the third end of the tri-state buffer 301 in the slave station uplink communication link are respectively used as the receiving end and the transmitting end of the slave station uplink communication link, and are respectively electrically connected with the uplink optical fiber receiving unit and the uplink optical fiber transmitting unit in the slave station controller of the current stage.
The communication link control unit is used for controlling the on and off of the tri-state buffer 301, so as to enable the downlink communication link of the slave station where the tri-state buffer 301 is located or the uplink communication link of the slave station to be switched on or off.
The on-off of the tri-state buffer 301 can control the on-off of the slave station downlink communication link or the slave station uplink communication link, when the tri-state buffer 301 is opened, the slave station downlink communication link or the slave station uplink communication link to which the tri-state buffer 301 belongs is conducted, and data can be transmitted; when the tri-state buffer 301 is turned off, the slave station downlink communication link or the slave station uplink communication link to which the tri-state buffer 301 belongs is disconnected, and data transmission is stopped; the switching on and off of the downlink communication link from the station and the transmission of the corresponding communication data are shown in fig. 4 and 5, respectively.
Referring to fig. 4, a downlink communication link of the slave station is turned on, and when downlink communication is performed, communication data can be directly sent from the downlink optical fiber receiving unit to a next communication object, that is, a next-stage slave station controller, through the downlink optical fiber sending unit; the same applies to the case that the uplink communication link of the slave station is conducted, so that cross-level communication between non-adjacent slave station controllers or between middle-level slave station controllers (except for the first-level slave station controller and the last-level slave station controller) and the master controller can be realized.
If the uplink communication links of the slave stations of the previous levels of slave station controllers are all conducted, the communication data can directly reach the master controller from the current slave station controller, if the downlink communication links of the slave stations in the following levels of slave station controllers are all conducted, the relevant data can directly reach the last level of slave station controller from the current slave station controller or the master controller, so that the overall communication speed is accelerated, the communication delay is greatly reduced due to the fact that the slave station controllers of all levels are connected through hardware, meanwhile, when the downlink communication links of the slave stations or the uplink communication links of the slave stations are conducted, the slave station controllers of the current level do not send data, and communication disorder caused by data competition can be prevented.
Optionally, the tri-state buffer 301 in this embodiment may be a tri-state buffer chip integrated in a ZynQ chip or an FPGA chip, or may be an independently configured tri-state buffer chip.
Optionally, as shown in fig. 3, the control unit (e.g. an FPGA unit in the ZynQ chip) to which the slave station downlink communication link belongs may further include: the device comprises a first serial-parallel conversion unit, a decoding unit, an encoding unit and a second serial-parallel conversion unit.
The serial port input end of the first serial-parallel conversion unit is electrically connected with a downlink optical fiber receiving unit in the slave station controller of the current stage, the parallel port output end is electrically connected with the input end of the decoding unit, and the output end of the decoding unit is electrically connected with the first control unit; the input end of the coding unit is electrically connected with the first control unit, the output end of the coding unit is connected with the parallel port input end of the second serial-parallel conversion unit, and the serial port output end of the second serial-parallel conversion unit is electrically connected with the downlink optical fiber sending unit in the slave station controller of the current stage.
Optionally, as shown in fig. 3, the control unit (e.g. an FPGA unit in the ZynQ chip) to which the slave station uplink communication link belongs may further include: the device comprises a first serial-parallel conversion unit, a decoding unit, an encoding unit and a second serial-parallel conversion unit.
The serial port input end of the first serial-parallel conversion unit is electrically connected with an uplink optical fiber receiving unit in the slave station controller of the current stage, the parallel port output end is electrically connected with the input end of the decoding unit, and the output end of the decoding unit is electrically connected with the first control unit; the input end of the coding unit is electrically connected with the first control unit, the output end of the coding unit is connected with the parallel port input end of the second serial-parallel conversion unit, and the serial port output end of the second serial-parallel conversion unit is electrically connected with the uplink optical fiber sending unit in the slave station controller of the current stage.
When the downlink communication link of the slave station in the slave station controller at this stage is disconnected, as shown in fig. 5, the slave station controller at this stage may receive communication data and control the transmission of the communication data via the communication branch to complete downlink communication, and the communication process is as follows:
when receiving data, the first serial-parallel conversion unit can convert serial data received by the downlink optical fiber receiving unit and sent by the upper-level slave station controller or the main controller into parallel data and send the parallel data to the decoding unit; the decoding unit can decode the received parallel data and send the decoded parallel data to the first control unit; the first control unit may utilize the received parallel data as needed.
When sending data, the first control unit sends the parallel data to be sent to the coding unit; the coding unit can code the parallel data sent by the first control unit and send the coded parallel data to the second serial-parallel conversion unit; the second serial-parallel conversion unit can convert the received parallel data into serial data and transmit the parallel data to the next-stage slave station controller or the main controller through the downlink optical fiber transmission unit.
The communication procedure when the uplink communication link of the slave station is on is the same as the communication procedure shown in fig. 4, and the communication procedure when the uplink communication link of the slave station is off is the same as the communication procedure shown in fig. 5, and details thereof are omitted.
Optionally, the data processing module in the slave station controller further includes: a synchronous detection unit.
One end of the synchronous detection unit is electrically connected with the first control unit, and the other end of the synchronous detection unit is electrically connected with the downlink optical fiber receiving unit or the uplink optical fiber receiving unit in the slave station controller of the current stage.
The synchronous detection unit is used for detecting the data delay condition of the slave station controller relative to other slave station controllers or the main controller according to the synchronous correction data packet received by the downlink optical fiber receiving unit or the uplink optical fiber receiving unit, and synchronously correcting the slave station controller according to the data delay condition.
Optionally, in each communication link, each stage of the synchronous detection unit may generate a synchronous pulse according to data in the received synchronous correction data packet, and each stage of the slave station controller in the communication link may perform synchronous correction according to the synchronous pulse, so as to eliminate delay caused by differences between a communication cable and a crystal oscillator, and enable synchronism of each stage of the slave station controller to meet requirements.
The specific operating principle of the control system of the converter provided by the embodiment of the present application may refer to the following method embodiments.
Based on the same inventive concept, an embodiment of the present application provides a control method of a converter, which can be applied to a control system of the converter provided in the embodiment of the present application, and with reference to the converter control system shown in fig. 1 or fig. 2, the control method includes:
in each communication link of the control system, a master controller issues a control data packet to each level of slave controllers through a system downlink communication link, and receives a feedback data packet which is uploaded by each level of slave controllers through a system uplink communication link and aims at the control data packet;
each level slave station controller identifies control data aiming at the level slave station controller from the control data packet, and executes corresponding operation according to the control data;
after each stage of slave station controller recognizes the control data, the feedback data packet of the slave station controller of the stage is uploaded to the master controller through the system uplink communication link, or after the next stage of slave station controller completes the sending of the feedback data packet of the next stage of slave station controller, the feedback data packet of the slave station controller of the stage is uploaded to the master controller through the system uplink communication link.
In the embodiment of the present application, data of a system downlink communication link (including a slave station downlink communication link in each level of slave station controller in the communication link) is determined by a master controller, and the master controller is responsible for issuing data to each slave station controller and receiving a feedback data packet uploaded by each slave station controller through a system uplink communication link (including a slave station uplink communication link in each level of slave station controller in the communication link) to realize monitoring of each slave station controller.
Optionally, when receiving the control data packet sent by the master controller, each slave station controller in this embodiment of the application only performs the receiving of the control data packet and performs the corresponding operation according to the identified control data in the control data packet, instead of sending data to the following slave station controller through the system downlink communication link in the communication link, so as to prevent communication data from being disordered.
Optionally, in this embodiment of the present application, the operation of issuing the control data packet by the main controller may be executed by a data processing module in the main controller, and the data processing module implements data issuing by using the optical fiber communication module.
Optionally, each slave station controller may monitor the data packet transmission condition of the next slave station controller when uploading the feedback data packet to the master controller, and only after determining that the next slave station controller does not currently transmit the feedback data packet or that the feedback data packet of the next slave station controller is currently transmitted, the feedback data packet of the slave station controller of the current stage is transmitted, that is, only one feedback data packet of the slave station controller is transmitted and transmitted at each time in the uplink communication link of the system, so as to prevent communication disturbance caused by data transmission and transmission at the same time.
In one example, after the last stage slave station controller receives the control data packet sent by the master controller through the system downlink communication link and identifies the control data aiming at the slave station controller in the control data packet, the feedback data packet of the slave station controller is sent through the system uplink communication link, at this time, the system uplink communication link is in an open state, the feedback data packet can be directly sent to the master controller through the system uplink communication link, after the last stage slave station controller directly connected with the last stage slave station controller monitors that the data packet sending of the last stage slave station controller is completed, the feedback data packet of the slave station controller is sent through the system uplink communication link, according to the mode, the feedback data packets of the slave station controllers of all stages are sequentially sent until the feedback data packet of the first stage slave station controller directly connected with the master controller is sent, to prevent communication disturbances.
Optionally, the identification of the control data, the operation based on the control data, and the uploading of the feedback data packet by the slave station controller in the embodiment of the present application may be performed by the first control unit as shown in fig. 3.
Optionally, the feedback data packet in the embodiment of the present application at least includes: feedback information for the received and identified control data and status information of the slave station controller at the current stage.
Optionally, the method for controlling a converter provided in the embodiment of the present application further includes:
detecting whether each level of slave station controllers have faults or not; for the failed last-stage slave station controller, controlling the slave station downlink communication link and the slave station uplink communication link in the slave station controller of the upper-stage to be disconnected (the disconnection state is shown in fig. 5); for any level of slave station controller except the last level of slave station controller in which the failure occurred, the conduction states of the slave station downlink communication link and the slave station uplink communication link in the level of slave station controller are maintained (the conduction states are shown in fig. 4).
Optionally, the fault detection of each level of slave station controllers may be performed by a master controller (e.g., a data processing module in the master controller) in the communication link, for example, whether a fault occurs is determined by the received state information of each level of slave station controllers, and if the state information shows an abnormality, the fault is considered to occur; it may also be performed by a slave station controller at a higher level in the communication link (e.g. the first control unit in the slave station controller), for example, for the last level slave station controller, if the last level slave station controller does not receive the data transmitted by the last level slave station controller via the system uplink communication link in one communication cycle, it is considered that the last level slave station controller has a failure.
In this embodiment, a communication cycle refers to a data interaction cycle of two adjacent slave station controllers, and specifically, if a time when a first slave station controller of the two adjacent slave station controllers transmits data to a second slave station controller is a first time and a time when the first slave station controller receives a response message returned after the second slave station controller operates on the data is a second time, a time range (which may include the first time and the second time) between the first time and the second time is a communication cycle.
Alternatively, referring to fig. 3 and 5, for the failed last-stage slave station controller, when controlling the disconnection of the slave station downlink communication link and the slave station uplink communication link in the last-stage slave station controller, the two tri-state buffers 301 may be controlled to be turned off by two communication link control units in the last-stage slave station controller, so as to disconnect the slave station downlink communication link and the slave station uplink communication link, and convert the last-stage slave station controller into a new last-stage slave station controller, so as to implement fault isolation for the original last slave station controller.
Alternatively, referring to fig. 3 and 4, for any slave station controller (referring to the case that any slave station controller fails) outside the failed last slave station controller, the open states of two tri-state buffers 301 in the slave station controller of the stage are maintained, so that the slave station downlink communication link and the slave station uplink communication link in the slave station controller of the stage are maintained in a conducting state and are not disconnected, communication data are forwarded to the next-stage communication object or the previous-stage communication object through the slave station downlink communication link or the slave station uplink communication link in the slave station controller, and the first control unit in the slave station controller does not receive and transmit data any more, so as to realize fault isolation of the slave station controller of the stage.
Optionally, before the master controller issues the control data packet to each level of slave controllers through the system downlink communication link, the method further includes:
in each communication link, when a first-stage slave station controller receives an automatic configuration command issued by a main controller, after the first-stage slave station controller is configured according to the automatic configuration command, configuration information of the first-stage slave station controller is issued to a second-stage slave station controller, and configuration success information is uploaded to the main controller;
each level of slave station controller behind the first level of slave station controller receives the configuration information sent by the slave station controller of the previous level, and after the slave station controller of the current level is configured according to the configuration information of the slave station controller of the previous level, the configuration information of the slave station controller of the current level is sent to the slave station controller of the next level, and the successful configuration information is uploaded to the main controller.
The automatic configuration of each parameter of each level slave station controller can be realized through the above mode, and the related parameters include but are not limited to: an ID (Identity Document) number, a number of interfaces (e.g., how many interfaces are configured for subsequent use among all interfaces), a protection threshold, a communication latency.
Taking the ID number as an example, the automatic configuration of the ID (Identity Document) number of each slave station can be realized, when the first-stage slave station controller receives an automatic configuration command issued by the main controller, the first-stage slave station controller configures the ID number of itself as 1, writes the configuration information of itself into a data packet, issues to the second-stage slave station controller, and uploads the successful configuration information to the main controller; after receiving the data packet sent by the first-stage slave station controller, the second-stage slave station controller configures the ID number of the second-stage slave station controller to 2 according to the configuration information in the data packet, writes the configuration information into the data packet, sends the data packet to the third-stage slave station controller, and uploads the successfully configured information to the master controller through the last-stage slave station controller; and sequentially configuring the slave station controllers of the subsequent stages in the same way until the last slave station controller completes configuration and uploading configuration success information.
Optionally, after completing the configuration of the last slave station controller, the last slave station controller waits for a communication cycle, and if the configuration success information of the next slave station controller is not received in a communication cycle, the configuration success information is uploaded to the master controller through the previous slave station controllers of the respective stages.
Optionally, in this embodiment of the application, the configuration success information uploaded by each level of slave station controllers includes ID numbers configured for the slave station controllers of each level, and the configuration success information uploaded by the last level of slave station controllers also includes information that the slave station controller is the last level of controller.
Optionally, the slave station controller in the embodiment of the present application may perform the operation based on the automatic configuration command or the configuration information and the feedback of the configuration success information by the first control unit as shown in fig. 3.
Optionally, before completing the automatic configuration of each level of slave station controllers in the above manner, the method further includes: after the control system is started, each level of slave station controllers are initialized and configured.
In an alternative embodiment, the initialization configuration comprises: specifically, two tri-state buffers 301 can be controlled to be turned off respectively by two communication link control units in each level of slave station controllers (the disconnection state is shown in fig. 5), so that the corresponding slave station downlink communication link and slave station uplink communication link are disconnected, and each slave station controller is disconnected to wait for the master controller to issue an automatic configuration command.
Optionally, before the master controller issues the control data packet to each level of slave controllers through the system downlink communication link, the method further includes:
in each communication link, after each level of slave station controller completes configuration, the slave station controller controls the conduction of a slave station downlink communication link and a slave station uplink communication link in the slave station controller of the level.
After the slave station downlink communication link and the slave station uplink communication link in the slave station controller of the current level are conducted, the data transmission between the master controller and each slave station controller can be accelerated, and the synchronous correction of the slave station controllers is favorably realized.
Optionally, for each level of slave station controllers after the first level of slave station controller, uploading configuration success information to the master controller, where the configuration success information includes:
and uploading configuration success information to the main controller through the uplink communication links of the slave stations in the slave station controllers of the previous stages.
Optionally, after controlling that both the slave station downlink communication link and the slave station uplink communication link in the slave station controller of this stage are turned on, the method further includes:
for each communication link, after receiving the configuration success information uploaded by the last-stage slave station controller, the master controller sends a synchronous correction data packet to the first-stage slave station controller, and sends the synchronous correction data packet to each-stage slave station controller behind the first-stage slave station controller through the slave station downlink communication link in each-stage slave station controller;
and each level of slave station controller determines the clock deviation between the slave station controller and the master controller according to the received synchronous correction data packet, and synchronously corrects the slave station controller according to the clock deviation.
Alternatively, the synchronization correction data packet includes a first correction data packet and a second correction data packet, the master controller transmits the second correction data packet after transmitting the first correction data packet, and the transmission interval of the first correction data packet and the second correction data packet may be set according to actual requirements, for example, may be set to 2000 clock cycles of the master controller (i.e., the master clock cycle of the master controller), and for the master controller with a clock frequency of 25MHz (megahertz), the total time of 2000 clock cycles is 80 microseconds, in other examples, the clock frequency of the master controller may also be another frequency value, and the corresponding total time may be another time value.
Optionally, each time a synchronous detection unit in the slave station controller receives a data packet (e.g., a first correction data packet or a second correction data packet), a synchronous pulse signal may be generated according to the received data packet, and if the received data packet defaults to a low level, the synchronous detection unit sets the signal high when the header of the data packet is received and sets the signal low when the tail of the data packet is received; the synchronous detection unit generates two pulses based on the two data packets by the above-mentioned operation of setting high and low when receiving the first correction data packet and the second correction data packet, determines a clock skew between the slave station controller and the master controller of the present stage based on a count between the two pulses (a count of a master clock of the slave station), and performs synchronous correction on the slave station controller of the present stage based on the clock skew to synchronize the control of the slave station of the present stage with the master controller.
In one example, let the clock period of the master controller be TmThe slave station controller has a clock period of TsThe count between two pulses of the slave station controller is N1And T ismAnd N1It is known that, since the hardware and cable delays in the control system do not change abruptly for a short time, the time interval between the reception of the first correction data packet and the second correction data packet by the slave station controller should coincide with the time interval between the transmission of the first correction data packet and the second correction data packet by the master controller, i.e. 2000Tm＝N1*TsFrom which T can be determineds＝2000Tm/N1According to the determined TsThe clock offset between the slave station controller and the master controller can be determined, and the slave station controller can be corrected according to the determined clock offset.
Optionally, after the master controller issues the synchronous correction data packet to each level of slave controllers, the method further includes:
after receiving the synchronous correction data packet, the last stage slave station controller transmits the synchronous correction data packet to the previous stage slave station controller through the slave station uplink communication link in the previous stage slave station controller;
and each stage of slave station controller determines the data delay of the slave station controller relative to the last stage of slave station controller according to the count between the time when the slave station controller receives the synchronous correction data packet for the first time and the time when the slave station controller receives the synchronous correction data packet for the second time, and performs synchronous correction on the slave station controller according to the data delay.
Optionally, the last-stage slave station controller may return at least one of the first correction data packet and the second correction data packet when returning the synchronous correction data packet, and a time interval at which the last-stage slave station controller transmits the first correction data packet and the second correction data packet when returning the first correction data packet and the second correction data packet coincides with a time interval at which the master controller transmits the first correction data packet and the second correction data packet.
Alternatively, each stage of the slave station controller may start counting when the first correction data packet is received for the first time (i.e., when the first correction data packet is received from the synchronous detection unit in the downlink branch of the station controller), and stop counting when the first correction data packet is received for the second time (i.e., when the first correction data packet is received from the synchronous detection unit in the uplink branch of the station controller); or when the first correction packet is received (i.e. when the second correction packet is received from the synchronous detection unit in the downlink branch of the station controller), the counting is started, and when the second correction packet is received (i.e. when the second correction packet is received from the synchronous detection unit in the uplink branch of the station controller), the counting is stopped.
Optionally, when the slave station controller receives the first correction data packet or the second correction data packet from the two synchronous detection units, the slave station controller may determine a data delay of the slave station controller relative to the last slave station controller according to a count between the two first correction data packets or a count between the two second correction data packets, where the data delay corrects the controller of the slave station controller, and the slave station controllers may operate synchronously according to a data delay of the slave station controllers caused by hardware and cable delays.
In one example, because communication is realized on an FPGA (PL side), the last stage slave station controller directly forwards data, and the delay time is very short and can be ignored; the delay of the slave station uplink and the slave station downlink communication link from any one stage of the slave station controller to the next stage of the slave station controller may be equivalently uniform.
In one example, the synchronous detection unit of each stage of slave station controller starts counting when receiving a first correction data packet sent by the master controller, stops counting when receiving a first correction data packet returned by the last stage of slave station controller, and assumes that the counting value is N2The clock period of the slave station controller at this stage is Ts1The physical delay of the unidirectional data transmission from the current stage slave station controller to the last stage slave station controller is TdSince the delays of the uplink communication link of the slave station and the downlink communication link of the slave station are consistent, the following results are obtained: 2Td＝N2*Ts1Further, it can be obtained: t isd＝(N2*Ts1) And/2, according to the determined TdThe synchronization correction can be carried out on the slave station controller of the current stage, so that the slave station controller of the current stage is synchronized with the slave station controller of the last stage.
Optionally, after the synchronous correction of the slave station controllers is completed in the above manner, the master controller may enter a normal operating mode, and in the normal operating mode, the master controller may issue a control data packet to the slave station controllers and receive feedback data packets of the slave station controllers.
By applying the embodiment of the application, at least the following beneficial effects can be realized:
1) according to the embodiment of the application, a plurality of parallel communication links are arranged on the basis of a main controller, and the number of star-shaped branches of the main controller is determined in the form of the communication links; the multi-level slave controllers connected in series are arranged in each communication link, each level of slave controllers can communicate with the main controller through a system downlink communication link and a system uplink communication link, namely, the control function of the main controller is expanded through the slave controllers and the formed system downlink communication link and system uplink communication link.
2) The communication in each communication link of the embodiment of the application is derived from the same signal, and the relative communication path is unique, so that the synchronism among slave station controllers in the communication links is improved, the control precision is improved, and the product reliability is improved.
3) In the embodiment of the application, each level of slave station controllers comprises optical fiber communication modules, optical fiber connections are adopted between the optical fiber communication modules in different slave station controllers, original multiple long optical fibers (optical fibers between the controller and each function module) can be changed into a combination of long optical fibers (optical fibers between the master controller and the first level of slave station controller) and short optical fibers (optical fibers between the slave station controllers), the number of the long optical fibers can be greatly reduced, wiring is easier to perform, meanwhile, the probability of multiple bending of the optical fibers can be reduced, the probability of failure of the optical fibers is reduced, for n function modules, the number of the long optical fibers can be reduced to 1/n, the number of the function modules is increased, and the advantages of the embodiment of the application are more obvious.
4) In the embodiment of the application, each slave station controller in each communication link can be connected with the same type of functional module, so that the star node resources of the master controller are solidified, link grouping is realized, different requirements in the future are met, the application range of products is expanded, the communication load can be reduced, and the reliability of the products is improved.
5) According to the embodiment of the application, a slave station downlink communication link and a slave station uplink communication link are arranged in a slave station controller, the two slave station communication links are connected with corresponding optical fiber units in two adjacent slave station controllers or master controllers through optical fiber receiving units (downlink optical fiber receiving units or uplink optical fiber receiving units) and optical fiber transmitting units (downlink optical fiber transmitting units or uplink optical fiber transmitting units) so as to realize cross-stage communication between different slave station controllers and direct communication between the slave station controllers and the master controller, and when the number of slave stations in the same communication link is large, the communication speed can be greatly increased.
6) According to the embodiment of the application, the communication link control unit and the tri-state buffer are arranged, on-off control of the downlink communication link of each slave station and the uplink communication link of each slave station can be achieved, data transmission is carried out according to actual requirements, and communication data disorder is avoided.
7) The synchronous detection unit in the embodiment of the application can receive the synchronous correction data packet sent by the main controller or the last-stage controller, and synchronously corrects each slave station controller based on the synchronous detection data packet, so that each slave station controller can synchronously work and synchronously work with the main controller, thereby improving the synchronism of each controller and improving the control precision.
8) The embodiment of the application can realize automatic isolation of the slave station control order fault without influencing the normal work of other parts, and can improve the reliability and the usability of products.
Those of skill in the art will appreciate that the various operations, methods, steps in the processes, acts, or solutions discussed in this application can be interchanged, modified, combined, or eliminated. Further, other steps, measures, or schemes in various operations, methods, or flows that have been discussed in this application can be alternated, altered, rearranged, broken down, combined, or deleted. Further, steps, measures, schemes in the prior art having various operations, methods, procedures disclosed in the present application may also be alternated, modified, rearranged, decomposed, combined, or deleted.
In the description of the present application, it is to be understood that the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
It should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and may be performed in other orders unless explicitly stated herein. Moreover, at least a portion of the steps in the flow chart of the figure may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed alternately or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.

Claims (16)

1. A control system for a converter, comprising: a master controller and a plurality of parallel communication links;
each communication link comprises a system downlink communication link and a system uplink communication link which are formed by a plurality of stages of slave station controllers connected in series;
a first-level slave station controller in each communication link is in communication connection with the master controller;
in each communication link, the system downlink communication link and the system uplink communication link are used for realizing communication between each level of slave station controller and the master controller in the communication link.
2. The control system of claim 1, wherein the master controller and the slave station controller each comprise a communicatively connected data processing module and a fiber optic communication module;
in each communication link, the optical fiber communication module in a first-level slave station controller is connected with the optical fiber communication module in the master controller through an optical fiber;
and between any two adjacent slave station controllers, the optical fiber communication module in the slave station controller at the upper stage is connected with the optical fiber communication module in the slave station controller at the lower stage through the optical fiber.
3. The control system of claim 2, wherein the fiber optic communication module in the slave station controller comprises: the system comprises a downlink optical fiber receiving unit, a downlink optical fiber transmitting unit, an uplink optical fiber receiving unit and an uplink optical fiber transmitting unit;
between any two adjacent slave station controllers, the downlink optical fiber transmitting unit in the slave station controller at the previous stage is connected with the downlink optical fiber receiving unit in the slave station controller at the next stage through an optical fiber; the uplink optical fiber receiving unit in the upper-stage slave station controller is connected with the uplink optical fiber transmitting unit in the lower-stage slave station controller through an optical fiber.
4. The control system of claim 3, wherein the data processing module in the slave station controller comprises a first control unit, a slave station downlink communication link and a slave station uplink communication link;
the slave station downlink communication link and the slave station uplink communication link are both electrically connected with the first control unit;
the receiving end and the sending end of the slave station downlink communication link are respectively and electrically connected with the downlink optical fiber receiving unit and the downlink optical fiber sending unit in the slave station controller of the current stage;
and the receiving end and the sending end of the slave station uplink communication link are respectively and electrically connected with the uplink optical fiber receiving unit and the uplink optical fiber sending unit of the slave station controller at the current stage.
5. The control system of claim 4,
the data processing module in the master controller is configured to: detecting whether each level of slave station controllers have faults or not; for the last-stage slave station controller with the fault, controlling the disconnection of a slave station downlink communication link and a slave station uplink communication link in the slave station controller of the previous stage; and maintaining the conduction state of a slave station downlink communication link and a slave station uplink communication link in the slave station controller for any level of slave station controller except the last level of slave station controller with the fault.
6. The control system of claim 4, wherein the secondary station downlink communication link and the secondary station uplink communication link each comprise: a communication link control unit and a tri-state buffer;
one end of the communication link control unit is electrically connected with the first control unit, and the other end of the communication link control unit is electrically connected with the first end of the tri-state buffer;
a second end and a third end of the tri-state buffer of the slave station downlink communication link are respectively used as a receiving end and a sending end of the slave station downlink communication link, and are respectively and electrically connected with the downlink optical fiber receiving unit and the downlink optical fiber sending unit in the slave station controller of the current stage;
a second end and a third end of the tri-state buffer in the slave station uplink communication link are respectively used as a receiving end and a sending end of the slave station uplink communication link, and are respectively and electrically connected with the uplink optical fiber receiving unit and the uplink optical fiber sending unit in the slave station controller of the current stage;
and the communication link control unit is used for controlling the on and off of the tri-state buffer so as to enable the downlink communication link of the slave station where the tri-state buffer is located or the uplink communication link of the slave station to be switched on or off.
7. The control system of claim 4, wherein the data processing module in the slave station controller further comprises: a synchronous detection unit;
one end of the synchronous detection unit is electrically connected with the first control unit, and the other end of the synchronous detection unit is electrically connected with the downlink optical fiber receiving unit or the uplink optical fiber receiving unit in the slave station controller of the current stage;
the synchronous detection unit is used for detecting the data delay condition of the slave station controller relative to other slave station controllers or the main controller according to the synchronous correction data packet received by the downlink optical fiber receiving unit or the uplink optical fiber receiving unit, and synchronously correcting the slave station controller according to the data delay condition.
8. The control system of claim 7,
for each stage of slave station controller, the synchronous detection unit is specifically configured to: and according to the received synchronous correction data packet sent by the main controller, determining the clock deviation between the slave station controller of the current stage and the main controller, and according to the clock deviation, synchronously correcting the slave station controller of the current stage.
9. The control system of claim 8,
for the last stage slave station controller, the synchronous detection unit is further configured to: after receiving the synchronous correction data packet sent by the master controller, sending the synchronous correction data packet to each previous stage of slave station controller through the slave station uplink communication link in each previous stage of slave station controller;
for each preceding slave station controller of the last slave station controller, the synchronous detection unit is further configured to: and determining the data delay of the slave station controller of the current stage relative to the slave station controller of the last stage according to the count between the time when the slave station controller of the current stage receives the synchronous correction data packet for the first time and the time when the slave station controller of the current stage receives the synchronous correction data packet for the second time, and performing synchronous correction on the slave station controller of the current stage according to the data delay.
10. A current transformer, comprising: a control system for a converter according to any one of claims 1 to 9, and a plurality of functional modules;
each of the functional modules is connected to a slave station controller in the control system.
11. The converter according to claim 10, wherein a plurality of said functional modules comprises at least one type of said functional module;
when a plurality of the function modules includes a plurality of types of the function modules, for each of the types, the function modules in the type are electrically connected to the slave station controllers in one communication link in the control system, respectively.
12. A wind turbine generator set, comprising: a current transformer as claimed in claim 10 or 11.
13. A control method of a converter, characterized by being applied to a control system of a converter according to any one of claims 1 to 9;
the control method comprises the following steps:
in each communication link of the control system, a master controller issues control data packets to all levels of slave controllers through a system downlink communication link, and receives feedback data packets which are uploaded by all levels of slave controllers through a system uplink communication link and aim at the control data packets;
each level slave station controller identifies control data aiming at the level slave station controller from the control data packet, and executes corresponding operation according to the control data;
and after the slave station controller at each stage identifies the control data, the feedback data packet of the slave station controller at the stage is uploaded to the main controller through the system uplink communication link, or after the next slave station controller finishes the sending of the feedback data packet of the next slave station controller, the feedback data packet of the slave station controller at the stage is uploaded to the main controller through the system uplink communication link.
14. The control method according to claim 13, characterized by further comprising:
detecting whether each level of slave station controllers have faults or not;
for the last-stage slave station controller with the fault, controlling the disconnection of a slave station downlink communication link and a slave station uplink communication link in the slave station controller of the previous stage;
and maintaining the conduction state of a slave station downlink communication link and a slave station uplink communication link in the slave station controller for any level of slave station controller except the last level of slave station controller with the fault.
15. The control method according to claim 13, before the master controller sends the control data packet to each level of slave controllers through the system downlink communication link, further comprising:
in each communication link, when a first-stage slave station controller receives an automatic configuration command issued by a main controller, after the first-stage slave station controller is configured according to the automatic configuration command, configuration information of the first-stage slave station controller is issued to a second-stage slave station controller, and configuration success information is uploaded to the main controller;
each level of slave station controller after the first level of slave station controller receives the configuration information sent by the slave station controller of the previous level, and after configuring the slave station controller of the current level according to the configuration information of the slave station controller of the previous level, the configuration information of the slave station controller of the current level is sent to the slave station controller of the next level, and the successful configuration information is uploaded to the master controller.
16. The control method according to claim 15, before the master controller sends the control data packet to each level of slave controllers through the system downlink communication link, further comprising:
in each communication link, after each level of slave station controller completes configuration, controlling the conduction of the slave station downlink communication link and the slave station uplink communication link in the slave station controller of the level;
for each level of slave station controllers after the first level of slave station controllers, uploading configuration success information to the master controller, including:
and uploading configuration success information to the main controller through the slave station uplink communication link in each previous stage of slave station controller.
CN202010560427.2A 2020-06-18 2020-06-18 Control system and method of converter, converter and wind generating set Pending CN113824296A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005333246A (en) * 2004-05-18 2005-12-02 Fuji Electric Systems Co Ltd Optical transmission apparatus and power converter
CN102725994A (en) * 2011-01-26 2012-10-10 华为技术有限公司 Method and apparatus for implementing time synchronization
CN104079355A (en) * 2014-06-30 2014-10-01 辽宁荣信众腾科技有限公司 Method and device for achieving serial communication between controller and power units
US20150023080A1 (en) * 2012-01-05 2015-01-22 American Power Conversion Corporation Methods and apparatus for controlling power switches via a digital communication bus
CN109582622A (en) * 2017-09-29 2019-04-05 魏莹 Dual link interconnection architecture based on three-dimensional Mesh network-on-chip

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005333246A (en) * 2004-05-18 2005-12-02 Fuji Electric Systems Co Ltd Optical transmission apparatus and power converter
CN102725994A (en) * 2011-01-26 2012-10-10 华为技术有限公司 Method and apparatus for implementing time synchronization
US20150023080A1 (en) * 2012-01-05 2015-01-22 American Power Conversion Corporation Methods and apparatus for controlling power switches via a digital communication bus
CN104079355A (en) * 2014-06-30 2014-10-01 辽宁荣信众腾科技有限公司 Method and device for achieving serial communication between controller and power units
CN109582622A (en) * 2017-09-29 2019-04-05 魏莹 Dual link interconnection architecture based on three-dimensional Mesh network-on-chip

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
朱红梅、潘美君: "基于Profibus-DP的现场总线通信技术", 自动化应用, no. 4, 25 April 2015 (2015-04-25), pages 40 - 41 *

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