A fast genlock control method for uninterruptible power supply parallel system
A genlocked, fast technology, applied in the direction of emergency power supply arrangements, electrical components, circuit devices, etc., can solve the problems of increasing switching risks, affecting the quality of output power supply, and failing to ensure that the phase of the inverter is consistent with the phase of the bypass
Inactive Publication Date: 2018-10-16
HUNAN INSTITUTE OF SCIENCE AND TECHNOLOGY
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Problems solved by technology
The adverse consequences of this method of ensuring the stability and reliability of the parallel system by reducing the rate of change of the synchronous pulse of the parallel system are that when the phase or frequency of the bypass power fluctuates greatly, the inverter cannot be guaranteed The phase is consistent with the bypass phase. At this time, if the uninterruptible power supply system fails, intermittent switching will occur, and the direct consequence of intermittent switching is to affect the quality of the output power supply and increase the risk of switching
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[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0032] Such as figure 1 As shown, it is a schematic diagram of a first embodiment of a fast genlock control method for an uninterruptible power supply parallel system according to the present invention, and the fast genlock control method of the present invention is adopted. The genlock of the UPS parallel system in this embodiment includes a capture unit 11 , a phase zone judgment unit 12 , a genlock unit 13 and a sync pulse sending unit 14 .
[0033] The capturing unit 11 is used for real-time detection of the sync pulse sent by the master sync pulse sending unit 14 of the parallel system on the...
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The invention provides an uninterrupted power supply parallel operation system fast synchronization phase-locked control method. According to the fast synchronization phase-locked control method, a capture unit, a phase region judging unit, a phase locking unit and a synchronization pulse transmitting unit are provided, wherein the capture unit is used for capturing synchronization pulses on a synchronization bus, the phase region judging unit is used for distinguishing regions where synchronization phases are located according to the width of the captured pulses, the phase locking unit is used for locking inverter output voltage phase to make the same consistent with the phase of the synchronization pulses according to the captured pulse information, and the synchronization pulse transmitting unit is used for transmitting the synchronization pulses to the synchronization bus after acquiring an parallel operation host identity. According to the fast synchronization phase-locked control method of the invention, a new synchronization pulse transmitting and capturing mode and software control method are adopted, so that single units of an uninterrupted power supply parallel operation system can quickly and accurately lock synchronization pulses, and the stability and reliability of the uninterrupted power supply parallel operation system can be improved.
Description
technical field [0001] The invention relates to the field of uninterruptible power supplies, more specifically, to a fast synchrolock control method for uninterruptible power supply parallel systems. Background technique [0002] In the event of a mains power outage, ensuring the continuity of power supply is the most basic and important function of an uninterruptible power supply system. At the same time, it also has voltage stabilization, frequency stabilization, filtering, anti-electromagnetic and radio frequency interference, and voltage surge protection. And other functions, can ensure that the load in the computer room obtains continuous high-quality power supply. Today, with the rapid growth of enterprise Internet applications, the importance of data centers has been further enhanced-the data centers are no longer carried by the data itself, but the core business of the enterprise, and its reliability is the key to ensuring the efficient operation of the core business...
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IPC IPC(8): H02J9/06
Inventor 周洪波周勇
Owner HUNAN INSTITUTE OF SCIENCE AND TECHNOLOGY