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A UPS parallel system and synchronization method

A parallel and synchronous signal technology, applied in the field of control, can solve problems such as the inability to obtain accurate power frequency synchronous signals

Active Publication Date: 2017-03-01
VERTIV CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a UPS parallel system and synchronization method to solve the problem that each UPS cannot obtain accurate power frequency synchronization signals in the prior art

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  • A UPS parallel system and synchronization method
  • A UPS parallel system and synchronization method
  • A UPS parallel system and synchronization method

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Embodiment Construction

[0021] The UPS parallel system and synchronization method provided by the embodiment of the present invention set multiple signal paths to transmit synchronization signals at the same time, thus solving the problem of signal path failure or the transmission of synchronization signals being disturbed when a single signal path transmits synchronization signals. The problem that the UPS cannot obtain accurate power frequency synchronization signals, thereby improving the reliability of synchronization signal transmission between parallel UPSs.

[0022] The specific implementation manners of a UPS parallel system and a synchronization method provided by the embodiments of the present invention will be described below with reference to the drawings in the description.

[0023] The embodiment of the present invention provides a UPS parallel system, the system includes a plurality of UPSs in parallel, at least one UPS includes at least two sending ports, each UPS includes at least two...

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Abstract

The embodiment of the present invention provides a UPS parallel system and a synchronization method to solve the problem in the prior art that each UPS cannot obtain accurate power frequency synchronization signals. The system includes: a plurality of UPSs connected in parallel, wherein at least one UPS includes at least two sending ports, and each UPS includes at least two receiving ports and a control chip; one sending port is connected to each UPS in the UPS parallel system One receiving port is connected, and one receiving port in each UPS is only connected to one sending port in the same UPS; the control chip in one of the UPSs containing at least two sending ports, through each sending port of the UPS itself Send a synchronization signal to each UPS in the parallel system, and the control chip in each UPS in the parallel system selects one signal from the received synchronization signals as the power frequency synchronization signal currently used by the UPS according to the power frequency signal.

Description

technical field [0001] The invention relates to the field of control technology, in particular to a UPS parallel system and a synchronization method. Background technique [0002] UPS (Uninterruptible Power Supply, uninterruptible power supply) refers to a device that can continue to supply power to the load when the AC input power supply (such as mains power) is abnormal or cut off, and can ensure the quality of power supply so that the power supply of the load is not affected. To ensure the reliability of power supply. In some occasions that require high power supply reliability, multiple UPSs are usually connected in parallel to further improve power supply reliability. [0003] In order to solve the problem of power frequency circulation between UPSs in parallel connection, a single synchronous signal is used for power frequency signal synchronization in the prior art. However, since the power frequency synchronization signal is interfered, the phases of the inverter v...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00
Inventor 王丛焦洁万倩姜友友
Owner VERTIV CORP