Timing sequence design method of dicycle information acquisition and processing execution in turns

Abstract

The invention provides a timing sequence design method of dicycle information acquisition and processing execution in turns. The method include a first step of collecting sent block valve information of a bridge arm segmentation control unit in T1 period, and a second step of processing and comprehensively ranking the collected block valve information in T 2 period. A layering and segmenting type collecting and processing structure solves the problem of the limits to collecting ability and processing ability of large-scale submodule module information from valve base control equipment. The collection and processing can be carried out in a dicycle mode in turns. The formation of a microsecond level decision of enormous collecting and processing information is guaranteed. A dicycle achievement is adopted, the adopted method is that an acquisition cycle and a processing and counting period run in turns, and therefore whole voltage balance effect collected and controlled by a bridge arm is macroscopic and reasonable.

Description

technical field [0001] The invention belongs to the technical field of power electronics, and in particular relates to a time sequence design method in which two-period information collection and processing are executed in turn. Background technique [0002] At present, various power electronic circuits based on the fully-controlled power electronic device IGBT have been increasingly used in power systems, locomotive traction, aerospace and other fields. With the development of power electronics technology, materials, and manufacturing processes, the current flow capacity of IGBT devices has become stronger and stronger, making it an important space to play in the field of DC power transmission, which directly promotes the birth and development of flexible DC power transmission technology. Different from the traditional high-voltage direct current transmission technology, the flexible direct current transmission converter replaces the thyristor series converter valve with a ...

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Problems solved by technology

[0004] In order to overcome the shortcomings of the above-mentioned prior art, the present invention provides a timing design method for double-period information collection and processing in turn. The layered and segmented collection and processing structure solves the problem of large-scale sub-module information collection by valve-based control equipment. In order to solve the problem of limited processing capacity, the idea of ​​double-cycle acquisition and processing in turn ensures the formation of microsecond-level decision-making for huge collection information and processing; adopting double-cycle implementation, the acquisition cycle and processing calculation cycle run in turn, so that the bridge arm can be aggregated and controlled The voltage balance effect of the overall bridge arm is more macroscopic and reasonable

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