High-power synchronous starting control method and system for parallel operation power supply
A control method and power synchronization technology, applied in the power supply field, can solve the problem of unable to realize the normal startup of the client, and achieve the effect of avoiding overcurrent protection and ensuring normal startup.
Active Publication Date: 2018-02-23
SHENZHEN HONOR ELECTRONICS
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Problems solved by technology
[0003] But when the client is started, when the power of the client is higher than the output power of a single power supply, if all the power supplies cannot be turned on synchronously, it will cause the overcurrent protection of the parallel power supplies one by one, and finally the normal startup of the client cannot be realized.
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[0039] figure 1 It is a schematic flowchart of Embodiment 1 of the high-power synchronous start-up control method for parallel power supplies of the present invention. What needs to be explained here is that the high-power synchronous start-up control method of parallel power supplies in this embodiment is applied to redundant power supplies with multiple parallel power supplies. During the power supply process, multiple power supplies supply power to the client together. It is realized under the condition that the starting power is higher than the output power of a single power supply.
[0040] Such as figure 1 As shown, the high-power synchronous start-up control method of the parallel power supply in this embodiment includes:
[0041] A. In the AC power mode of all power supplies, each power supply controls whether the bus is at a high level in the preset cycle detection mode, and when the received start signal is at a low level, the control switch interface outputs a sta...
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The invention relates to a high-power synchronous starting control method and system for a parallel operation power supply. The control method comprises the steps: when all power supplies are in an ACmode, each power supply controls to determine whether a bus is in high level or not by a preset cycle circulating detection mode; if a received startup signal is in low level, a switch interface is controlled to output a starting signal, and all parallel operation power supplies are started synchronously; when a part of power supplies are in the AC mode, and if all the power supplies with AC detect that the received startup signals are in low level, and the first preset time interval is reached, the switch interface is controlled to output a starting signal, and all the power supplies with ACare started synchronously. By virtue of the high-power synchronous starting control method and system, when the system startup power is higher than the output power of single power supplies, all parallel operation power supplies can be started synchronously, thereby ensuring normal start of the system.
Description
technical field [0001] The present invention relates to the technical field of power supplies, more specifically, to a high-power synchronous start-up control method and system for parallel power supplies. Background technique [0002] Under the condition of parallel power supply (that is, redundant power supply), after the power supply is turned on, multiple power supplies supply power to the client at the same time. Among them, when any one or several power supplies are abnormal, the remaining power supplies can still supply power to the client normally. So that the client can continue to work normally without being affected by abnormal power supply. [0003] However, when the client starts, if the power of the client is higher than the output power of a single power supply, if all the power supplies cannot be turned on synchronously, it will lead to overcurrent protection of the parallel power supplies one by one, and finally the normal startup of the client cannot be rea...
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IPC IPC(8): H02M1/36H02M1/32
CPCH02M1/32H02M1/36
Inventor 陈月华鄢来恩吴治江
Owner SHENZHEN HONOR ELECTRONICS