Non-master/slave self-current-sharing grid-connected parallel uninterrupted power supply system and power supply method thereof
A technology of power supply system and self-leveling current, applied in battery circuit devices, current collectors, electric vehicles, etc., can solve the problems of restricting the response speed of the system, and achieve the goal of overcoming the limitation of calculation power, ensuring stability, and simplifying the circuit structure Effect
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[0029] Specific embodiments of the present invention will be described in detail below in conjunction with the technical solutions of the present invention and the accompanying drawings.
[0030] The topological structure of the non-master-slave self-sharing grid-connected parallel uninterruptible power supply system of the present invention is as follows: figure 2 shown. The uninterruptible power supply system is mainly composed of two or more identical uninterruptible power supply system units connected in parallel, and each uninterruptible power supply system unit includes: four single-phase full-bridge converters H 1 ~H 4 , three power frequency inductors L S , L 1 , L 2 , a high frequency inductor L, a DC filter capacitor C 1 , an AC filter capacitor C 2 , an isolation transformer T, two bidirectional thyristors K 1 、K 2 , an air switch B and a battery pack V B ; The input side of each uninterruptible system unit is connected to the power grid through the air sw...
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