Novel microgrid energy storage device power supply system

Abstract

The invention provides a novel microgrid energy storage device power supply system. The system comprises alternating current input, an alternating current / direct current conversion circuit, a direct current conversion circuit, a linear voltage stabilizing circuit, a direct current output detection circuit, direct current output, a driving circuit, a digital-to-analog conversion circuit, a man-machine interaction circuit and a closed-loop control circuit. The alternating current input is converted into a direct current through the alternating current / direct current conversion circuit. Output ofthe alternating current / direct current converter circuit passes through the direct current conversion circuit to obtain the input of the linear voltage stabilizing circuit. The linear voltage stabilizing circuit is controlled by the closed-loop control circuit. The output of the linear voltage stabilizing circuit is the direct current output, the direct current output provides input for the closed-loop control circuit through the voltage detection circuit, the closed-loop control circuit provides data for the man-machine interaction circuit, and the direct current conversion circuit needs thedriving circuit to provide an input signal. A power supply of the invention is low in ripple and low in noise, online interaction and fault wave recording can be achieved, and operation stability isimproved.

Description

technical field [0001] The present invention relates to the technical field of power supply equipment, and in particular, relates to a power supply system for a novel microgrid energy storage device. Background technique [0002] In recent years, renewable and environmentally friendly new energy sources such as wind energy and solar energy have been used for power generation on an increasing scale. However, unlike traditional synchronous generators, distributed power equipment such as wind turbines and photovoltaic power supplies often produce unstable power supply, which is not suitable for some electrical equipment that requires stable power supply, and limits the use of unstable power supply equipment. Therefore, in order to meet the demand for electricity under various environmental conditions, it is necessary to stabilize the power output from the unstable power supply equipment and supply it to the energy storage equipment for charging. At present, the charging power ...

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Problems solved by technology

At present, the charging power converters of energy storage power supplies on the market generally use switching power supplies, which have high ripple and high noise, and there are problems such as the inability to perform online interaction and trouble-free recording and recording during operation, which leads to problems in practical applications. When a fault occurs or the operation effect is not good, it is not easy to quickly eliminate the fault and adjust the output, which limits the energy storage application effect of the microgrid energy storage device

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