Power supply system

Abstract

The invention discloses a power supply system which comprises a plurality of power supply devices connected in parallel, a parallel power supply starting indication signal line and a parallel power supply state indication signal line, and a power supply starting indication signal processing unit, a power supply state indication signal processing unit, a starting control signal processing unit and a logic OR gate element are arranged in each power supply device. A parallel power supply starting-up indication signal of the parallel power supply starting-up indication signal line is synthesized by a single power supply starting-up indication signal of a power supply starting-up indication signal processing unit in each power supply device according to a line AND logic; and parallel power supply state indication signals of the parallel power supply state indication signal lines are synthesized by single power supply state indication signals of the power supply state indication signal processing units in the power supply devices in a line OR logic manner. According to the invention, synchronous starting of the parallel power supplies can be realized, and the requirement of closing or adding the power supplies when the load changes can be met.

Description

technical field [0001] The invention relates to the technical field of electric power systems, in particular to a power supply system. Background technique [0002] In the application of switching power supply, in order to achieve higher power output, parallel connection of multiple power supplies is a common application method. When multiple power supplies in parallel are started, the technical method of synchronous start or the redundant N+1 start-up method is mainly adopted. These two start-up methods have their own advantages and disadvantages. The synchronous start technology can realize that N sets of parallel power supplies are N times that of a single set. The output power of the power supply starts, but it cannot be turned off online or add one or several power supplies when the load changes. The startup mode of redundant N+1 is just the opposite, allowing flexible shutdown or adding one or several power supplies when the load changes Power supply, but not enough f...

AI Technical Summary

Problems solved by technology

When multiple power supplies in parallel are started, the technical method of synchronous start or the redundant N+1 start-up method is mainly adopted. These two start-up methods have their own advantages and disadvantages. The synchronous start technology can realize that N sets of parallel power supplies are N times that of a single set. The output power of the power supply starts, but it cannot be turned off online or add one or several power supplies when the load changes. The startup mode of redundant N+1 is just the opposite, allowing flexible shutdown or adding one or several power supplies when the load changes power supply, but not enough for heavy-duty startup

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