A real-time communication and synchronous sending system for distributed control of power electronics
A distributed control and real-time communication technology, applied in multiplex communication, time division multiplex system, transmission system, etc., can solve problems such as synchronization cycle constraints, information conflicts, increased hardware costs, etc., to improve accuracy , Guarantee synchronization accuracy and save hardware resources
Active Publication Date: 2018-08-03
安徽船途数字科技有限公司
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Problems solved by technology
[0005] However, this patent has the following deficiencies: 1. Channel usage: this patent adopts an independent synchronous channel. If control data signals are transmitted on this channel at the same time, information conflicts will occur, so an additional channel is needed to transmit control data, which increases the Hardware cost; 2. Synchronization cycle setting: In this patent, there are clear constraints on the synchronization cycle
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[0026] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.
[0027] Such as figure 1 As shown, a structural block diagram of a real-time communication and synchronous transmission system for power electronics distributed control provided by the present invention includes: a reference clock, a control data frame generation module, a synchronization frame generation module, and a transmission processing module;
[0028] The reference clock module, as a clock reference in the distributed system, outputs current clock information to the synchronization frame ge...
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The invention provides a real-time communication and synchronous transmitting system used for power electronic distributed control. A reference clock module outputs current clock information to a synchronization frame generation module and a transmitting processing module; a control data frame generation module constructs real-time control data under transmission into control data frames and transmits the control data frames to the transmitting processing module; the synchronization frame generation module constructs the clock data generated by the reference clock module into synchronization data frames and transmits the synchronization data frames to the transmitting processing module; and the transmitting processing module coordinates data transmission, avoid transmission conflict and guarantees real-time transmission of the control data and accuracy of the synchronization data, and forms serial signals of certain baud rate according to the data frames under transmission and transmits the serial signals to a transmission port. The compatible transmission function of the real-time control data and the synchronization data in the single channel can be realized, and the transmission period of the real-time data and synchronous messages in the single channel can be independently and flexibly set.
Description
technical field [0001] The invention relates to the technical field of power electronics, in particular to a real-time communication and synchronous sending system for distributed control of power electronics. Background technique [0002] With the development of power electronics technology towards modularization and intelligence, the modular power unit composed of fully controlled semiconductor power devices has become the basic control unit in complex power electronic systems, making the entire control system a distributed control system. The power electronic control system requires high real-time performance, and its control cycle is generally tens to hundreds of microseconds, and the clock reference of each control unit is required to run in a synchronized state, and its synchronization accuracy is required to reach the nanosecond level. Therefore, real-time communication and Synchronization is a key technology in complex distributed power electronic control technology....
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IPC IPC(8): H04J3/06H04L1/00
CPCH04J3/0605H04J3/0632H04J3/0635H04L1/004
Inventor 蔡旭常怡然张建文
Owner 安徽船途数字科技有限公司