Rectification module of intelligent high frequency switch power supply

Abstract

The invention discloses a rectification module of an intelligent high frequency switch power supply. A main controller is connected with a DC / DC (Direct Current / Direct Current) transfer circuit, an overvoltage overcurrent and short circuit protection circuit, an overtemperature protection circuit, a communication interface circuit, and an information acquisition and feedback circuit; the input terminal of the DC / DC transfer circuit is sequentially connected with a passive PFC (Positive feedback circuit) correction circuit, a rectification circuit, and a over-lightning protection processing and filter circuit; the output terminal of the DC / DC transfer circuit is sequentially connected with a smoothed filter circuit and an output protection circuit; the whole connection forms a rectification module. The rectification module is an important part of the intelligent high frequency switch power supply, and integrates the rectification function with the charging function to effectively play the rectification role, thus the direct current voltage output and the operating voltage output of the switch power supply are ensured stably.

Description

technical field [0001] The invention relates to an intelligent high-frequency switching power supply rectification module, which is a DC power supply emergency device used in substations in the electric power industry. Background technique [0002] As an important confluence node of the power grid and a transfer station for energy transmission and distribution, the safe and stable operation of the substation is related to the reliability of power supply and the security of the power grid, and involves the interests of thousands of households in power consumption. The substation DC power supply system is an important power provider for secondary equipment such as substation relay protection. Whether its operation is reliable or not is directly related to the safe and stable operation of the substation. [0003] The DC emergency power supply of the substation currently configured can only be used as a simple DC charging device because it has no DC uninterrupted power supply ca...

AI Technical Summary

Problems solved by technology

There are two kinds of DC emergency devices in substations in China. One is the ordinary DC emergency charging device. This type of device can only respond to the abnormal situation of the charger in the DC system of the substation, and is not suitable for the abnormality, maintenance and replacement of the battery pack in the substation. The charging devices of the DC system are all N+1 configurations, and this type of DC emergency power supply device is not very practical; the other is a simplified version of the DC system, which is equipped with a full set of batteries similar to the substation. Generally, the charging device is separated from the battery pack and has a large volume. The weight is heavy, it is very inconvenient to apply, and the application limitations are also very large

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