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Method for outputing high-precision synchronous signal by on-line parallel alternating current power supply module

A high-precision synchronization and power module technology, applied in the direction of AC network circuits, electrical components, circuit devices, etc., can solve problems that endanger the stability and reliability of parallel systems, improve work stability and reliability, and suppress parallel connections Circulation, the effect of improving phase consistency

Active Publication Date: 2013-06-05
BEIJING DINGHAN TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This jitter will lead to significant parallel circulation between AC output modules working in parallel, seriously endangering the stability and reliability of the parallel system

Method used

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  • Method for outputing high-precision synchronous signal by on-line parallel alternating current power supply module
  • Method for outputing high-precision synchronous signal by on-line parallel alternating current power supply module
  • Method for outputing high-precision synchronous signal by on-line parallel alternating current power supply module

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Embodiment Construction

[0053] like Figure 5 As shown, a method for outputting high-precision synchronous signals of online parallel AC power modules, the power module includes power module 1 and power module 2, the real zero-crossing time t0 of the sine wave of the AC output voltage Vout1 of power module 1 and this execution There is a random error Δt of 0-50us between the controlled moments t2. If the output IO port is simply used to generate the output synchronization signal SYN, there will inevitably be a random error Δt of 0-50 us between the signal and the real zero-crossing time t0 of the AC output voltage Vout1 of the power module 1 . Therefore, a reasonable method of generating the output synchronization signal SYN is the key to solving the problem. The generation of synchronous signal SYN has adopted PWM interface (pulse width modulation interface) among the present invention, and concrete steps are as follows:

[0054] First, calculate the random error Δt

[0055] At time t2, the contr...

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Abstract

The invention discloses a method for generating an output high-precision synchronous signal by an on-line parallel alternating current power supply module. The power supply module comprises a power supply module 1 and a power supply module 2, and a random error delta t of 0 to 50us is formed between the real zero crossing point moment t0 of alternating current output voltage Vout1 sine wave of the power supply module 1 and the local control executing moment t2. If an output IO port is simply used for generating an output synchronous signal SYN, the signal and the real zero crossing point moment t0 of the alternating current output voltage Vout1 sine wave of the power supply module 1 also have a random error delta t of 0 to 50us. Therefore, the generating method for the reasonable output synchronous signal SYN is a key for solving problems. By the method for generating the high-precision output synchronous signal, phase jitter caused by the random error introduced when the output synchronous signal is generated is solved, phase consistency of the power supply modules is improved, parallel circulation is inhibited, and working stability and reliability of a parallel system are remarkably improved.

Description

technical field [0001] The invention relates to a method for outputting a high-precision synchronous signal by an online parallel AC power supply module. Background technique [0002] If the AC power modules need to work in parallel online with each other, it must be ensured that: [0003] A. The AC output voltage of each module has the same voltage effective value (or within an acceptable range); [0004] B. The AC output voltage of each module has the same phase (or within an acceptable range). [0005] The method to ensure that the AC output voltage of each module has the same voltage effective value is not described here, and this article only describes in detail the various methods to ensure that the AC output voltage of each module has the same phase. [0006] Obviously, in order to achieve the same phase of the AC output voltage of each module, a signal reflecting the output phase of each parallel AC power supply module must be transmitted between the modules, that ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00
Inventor 刘代兵
Owner BEIJING DINGHAN TECH GRP CO LTD