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Multi-inverter parallel carrier synchronization device with redundancy function and synchronization method thereof

A carrier synchronization, multi-inverter technology, applied in the direction of output power conversion device, carrier adjustment, modulation carrier system, etc., can solve the problems of loss, the system can not run normally, does not have the host fault redundancy function, etc., to achieve power Low loss, guaranteed uninterrupted operation, and improved system reliability

Inactive Publication Date: 2019-10-29
TIANJIN RES INST OF ELECTRIC SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing carrier synchronization technology usually adopts a master-slave control method, which does not have the redundancy function of host failure. Once the host fails, the entire system cannot operate normally, resulting in great losses

Method used

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  • Multi-inverter parallel carrier synchronization device with redundancy function and synchronization method thereof
  • Multi-inverter parallel carrier synchronization device with redundancy function and synchronization method thereof
  • Multi-inverter parallel carrier synchronization device with redundancy function and synchronization method thereof

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Embodiment Construction

[0035] Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0036] A multi-inverter parallel carrier synchronization device with redundancy function, figure 1 As shown, it includes a master, a backup master and multiple slaves. The master and backup masters have the same structure, and both include a master / standby master carrier synchronization unit, an inverter digital signal processor and an inverter connected in sequence. The main circuit of the inverter, the slave includes a sequentially connected slave carrier synchronization unit, an inverter digital signal processor and an inverter main circuit, the master / standby master carrier synchronization unit of the master and the master / standby of the backup master The master carrier synchronization unit is connected with the slave carrier synchronization units of each slave in broadcast mode through synchronous optical fibers, that is, the master is con...

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Abstract

The invention relates to a multi-inverter parallel carrier synchronization device with a redundancy function and a synchronization method thereof. The synchronization system comprises a host, a standby host and a plurality of slaves, wherein the host and the standby host are the same in structure, the host and the standby host are connected with the slaves through synchronous optical fibers in a broadcasting mode, the slaves are connected with the host and the standby host through two synchronous lines respectively, and the host and the standby host are connected through two synchronous lines;the synchronization method comprises a host synchronization processing method, a standby host synchronization processing method and a slave synchronization processing method. The design is reasonable, the host / standby host sends and receives synchronization signals at the same time, when the host breaks down, the standby host can still guarantee normal operation of the system, after the host returns to normal, the host is synchronized with the standby host and then put into operation, smooth access without impact can be achieved, the system reliability is improved, and power loss during failure can be reduced to the minimum.

Description

technical field [0001] The invention belongs to the technical field of multi-inverter parallel connection, in particular to a multi-inverter direct parallel carrier synchronization device with redundancy function and a synchronization method thereof. Background technique [0002] At present, the technology of multi-inverter parallel connection has been widely used, how to effectively control the multi-inverter synchronously is the prerequisite for the normal operation of the multi-inverter parallel system. Existing carrier synchronization technology usually adopts a master-slave control method, which does not have a host failure redundancy function. Once the host fails, the entire system cannot operate normally, resulting in large losses. Contents of the invention [0003] The object of the present invention is to overcome the deficiencies of the prior art, and propose a rationally designed, safe and reliable multi-inverter parallel carrier synchronization device with redu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/00H04L27/26H04L1/22H04B10/032H02M7/493
CPCH02M7/493H04B10/032H04L1/22H04L27/0014H04L27/2657Y02B70/10
Inventor 董钺厉成元张超邱晗王明玥魏轩宇于洪泽
Owner TIANJIN RES INST OF ELECTRIC SCI
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