A communication device and communication method for wind power converter

Abstract

The invention discloses a communication apparatus for a wind power converter, and a communication method. The communication apparatus comprises a microcontroller, an EtherCAT slave station controller, a converter-side DSP controller, a blower fan master controller and a correlation network interface. The communication method comprises the steps of completing initialization of the microcontroller, the EtherCAT slave station controller and a communication variable, completing communication initialization through communication state machine processing and the like. Through the apparatus and method provided by the invention, real-time data interaction between a communication unit and the blower fan master controller and networking operation of a blower fan converter module are realized, concentrated data acquisition processing by all converter devices in a wind field can be further realized through a CAN bus, and accordingly, remote management of the converter is realized through data communication by use of an SCADA system.

Description

technical field [0001] The invention relates to a communication device and method in the field of industrial automation control, in particular to a communication device and method for networked observation and control of a power grid in the field of wind power. Background technique [0002] EtherCAT was originally an "industrial Ethernet technology for industrial control" protocol developed by Beckhoff in Germany. It is an open architecture, Ethernet-based fieldbus system, and the fastest industrial Ethernet technology. At present, Ethernet technology is gradually applied in the field of industrial control, and industrial Ethernet technology is developing rapidly all over the world. [0003] The real-time industrial Ethernet technology proposed by the EtherCAT bus has high efficiency, short refresh cycle, can reach a data refresh cycle of less than 100 microseconds, and has good synchronization. It has been used as a standardized technology and is an international standard I...

AI Technical Summary

Problems solved by technology

When the converter communicates with the main controller of the wind turbine, there are multiple buses coexisting, which leads to communication difficulties between various heterogeneous networks, which seriously affects the intelligence level of the wind power system, and also makes it difficult for the main controller of the wind turbine to communicate with each other. The real-time monitoring of the converter affects the stability and reliability of the system to a certain extent

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