On-site execution unit remote online upgrade system of chained converter

Abstract

Provided is an on-site execution unit remote online upgrade system of a chained converter. The distributed structure and the abundant external communication management interfaces of the chained converter are used in the system, and the management and the upgrade of a unit FPGA program are achieved. Optical serial ports are adopted in an on-site execution unit and the communication interfaces of the chained converter, the on-site execution unit and the chained converter can flexibly carry out revision identification, program erasure, verification, programming, upgrading, enablement and other operations on the unit FPGA program. Each pair of optical serial ports adopts an 8B / 10B coder and decoder, normal communication is guaranteed with the help of CRC verification, a communication response mechanism is adopted, and the function of error code retransmission is supported. The management and upgrade of the program can be carried out through a local terminal. The system can be communicated with the converter through remote control, and the management of the program is made to have more maneuverability. The mentioned design fully meets the requirements of a current chained converter FPGA remote online upgrade system, the convenience that the chained converter is applied to different backgrounds is greatly improved, and the upgrade and maintenance of a program version are convenient.

Description

technical field [0001] The invention belongs to the technical field of power electronic converters, and is suitable for the FPGA remote online upgrade application of the on-site control unit of the chain converter. Background technique [0002] In the past few decades, various control technologies have been developed, and the hardware circuit of the control system also has the initial analog circuit control with discrete components, and gradually develops into a microprocessor based on special-purpose and general-purpose integrated circuits (microprocessor), micro-controller It is a fully digital control system of Microcontroller, DSP (Digital Signal Processor) and FPGA (Field-Programmable Gate Array). With the continuous increase of the capacity demand of the power electronic converter, the converter structure of the chain structure can meet the demand of the converter capacity expansion, and the number of local control units is becoming more and more, and due to the closed...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the technical problems that the converter system in the prior art does not have the online upgrade function of the FPGA, and the FPGA program is updated manually on the spot, many updated on-site execution units are required and are not easy to operate, and there are safety risks at the same time. The invention discloses an FPGA online upgrade system for a chain structure converter

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